Download Service Manual - Boston Heating Supply

TECHNICAL & SERVICE MANUAL
OUTDOOR UNIT : CMH1972
CMH2472
CMH3172
FILE NO.
Destination: North America
DC INVERTER MULTI-SYSTEM AIR CONDITIONER
CMH1972
Capacity at 230V
Outdoor Model No.
Product Code No.
19,100 BTU/h
CMH1972
1 852 330 30
23,200 BTU/h
CMH2472
1 852 330 31
30,600 BTU/h
CMH3172
1 852 330 32
< Applicable Indoor Units >
●Wall
mounted type
KMHS0772
KMHS0972
KMHS1272
KMHS1872
KMHS2472
NOTE
For details about the combination, refer to
"Unit Combination Table" in the Appendix
of this manual.
CMH2472
IMPORTANT
These air conditioners employ new
refrigerant R410A.
Pay special attention when
servicing the unit.
CMH3172
REFERENCE NO. SM700660-04
When Transporting
Important!
Please Read Before Starting
Be careful when picking up and moving the indoor and
outdoor units. Get a partner to help, and bend your knees
when lifting to reduce strain on your back. Sharp edges or thin
aluminum fins on the air conditioner can cut your fingers.
This air conditioning system meets strict safety and operating
standards. As the installer or service person, it is an
important part of your job to install or service the system so it
operates safely and efficiently.
When Installing
In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the unit’s
weight. It may be necessary to construct a strong wood or
metal frame to provide added support.
In a Room
Properly insulate any tubing run inside a room to prevent
"sweating" that can cause dripping and water damage to walls
and floors.
In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a
solid, level foundation for the outdoor unit. This prevents water
damage and abnormal vibration.
In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal
frame. Provide a suitable air baffle.
In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher than
drifting snow. Provide snow vents.
For safe installation and trouble-free operation, you must:
Carefully read this instruction booklet before beginning.
Follow each installation or repair step exactly as shown.
Observe all local, state, and national electrical codes.
Pay close attention to all warning and caution notices given
in this manual.
This symbol refers to a hazard or
WARNING unsafe practice which can result
in severe personal injury or death.
CAUTION
This symbol refers to a hazard
or unsafe practice which can
result in personal injury or
product or property damage.
If Necessary, Get Help
These instructions are all you need for most installation
sites and maintenance conditions. If you require help for
a special problem, contact our sales/service outlet or
your certified dealer for additional instructions.
When Connecting Refrigerant Tubing
In Case of Improper Installation
The manufacturer shall in no way be responsible for
improper installation or maintenance service, including
failure to follow the instructions in this document.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the
flare and union tubes before connecting them, then tighten
the nut with a torque wrench for a leak-free connection.
• Check carefully for leaks before starting the test run.
SPECIAL PRECAUTIONS
When Servicing
WARNING
• Turn the power off at the main power box (mains) before
opening the unit to check or repair electrical parts and
wiring.
• Keep your fingers and clothing away from any moving parts.
• Clean up the site after you finish, remembering to check
that no metal scraps or bits of wiring have been left inside
the unit being serviced.
When Wiring
ELECTRICAL SHOCK CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.
ONLY A QUALIFIED, EXPERIENCED
ELECTRICIAN SHOULD ATTEMPT TO
WIRE THIS SYSTEM.
Others
• Do not supply power to the unit until all wiring and tubing
are completed or reconnected and checked.
• Highly dangerous electrical voltages are used in this
system. Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and
inadequate grounding can cause accidental injury or death.
• Ground the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause
overheating at connection points and a possible fire
hazard.
• Install a protective leakage breaker depending on the
CAUTION
• Ventilate any enclosed areas when installing or testing the
refrigeration system. Escaped refrigerant gas, on contact
with fire or heat, can produce dangerously toxic gas.
• Confirm upon completing installation that no refrigerant gas
is leaking. If escaped gas comes in contact with a stove,
gas water heater, electric room heater or other heat source,
it can produce dangerously toxic gas.
installation location (especially a damp or humid
location). If a leakage breaker is not installed, electric
shock can occur.
2
Table of Contents
Page
APPLICABLE INDOOR UNITS .....................................................................................................
1. OPERATING RANGE ...................................................................................................................
4
5
2. SPECIFICATIONS
2-1. Unit Specifications .............................................................................................................
2-2. Major Component Specifications .......................................................................................
2-3. Other Component Specifications .......................................................................................
6
12
15
3. DIMENSIONAL DATA .....................................................................................................................
16
4. REFRIGERANT FLOW DIAGRAM
4-1. Refrigerant Flow Diagram ...................................................................................................
19
5. PERFORMANCE DATA
5-1. Temperature Charts ............................................................................................................
5-2. Cooling Capacity ................................................................................................................
5-3. Heating Capacity ................................................................................................................
22
36
39
6. ELECTRICAL DATA
6-1. Electric Wiring Diagrams ....................................................................................................
42
7. FUNCTIONS
7-1. Explanation of Functions .....................................................................................................
7-2. Protective Functions ...........................................................................................................
45
50
8. TROUBLESHOOTING
8-1. Precautions before Performing Inspection or Repair ..........................................................
8-2. Trouble Diagnosis by Error Monitop Lamps .........................................................................
8-3. Checking the Outdoor System ............................................................................................
8-4. Trouble Diagnosis of Each Part ...........................................................................................
8-5. Trouble Diagnosis of Fan Motor ...........................................................................................
53
54
55
56
60
9. REFRIGERANT R410A:
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
9-1. Characteristics of New Refrigerant R410A ........................................................................
9-2. Checklist before Servicing ...................................................................................................
9-3. Tools Specifically for R410A ................................................................................................
9-4. Tubing Installation Procedures ............................................................................................
9-5. In Case of Compressor Malfunction ....................................................................................
9-6. In Case Refrigerant is Leaking ............................................................................................
9-7. Charging Additional Refrigerant ..........................................................................................
9-8. Retro-Fitting Existing Systems ............................................................................................
61
62
63
63
64
66
67
67
APPENDIX A INSTALLATION INSTRUCTIONS .............................................................................. A-1
APPENDIX B UNIT COMBINATION TABLES .................................................................................. A-2
3
APPLICABLE INDOOR UNITS
Indoor Unit
Multi-Outdoor Unit
KMHS0772
KMHS0972
KMHS1272
KMHS1872
KMHS2472
3-Room
CMH1972
YES
YES
YES
YES
NO
4-Room
CMH2472
YES
YES
YES
YES
YES
4-Room
CMH3172
YES
YES
YES
YES
YES
NOTE
The table lists the wall-mounted type of indoor units as representative models.
4
1. OPERATING RANGE
Cooling
Heating
Temperature
Indoor Air Intake Temp.
Maximum
95 °F D.B. / 71 °F W.B.
115 °F D.B.
Minimum
67 °F D.B. / 57 °F W.B.
67 °F D.B.
Maximum
80 °F D.B. / 67 °F W.B.
_ D.B. / _ W.B.
75 °F D.B. / 65 °F W.B.
Minimum
5
Outdoor Air Intake Temp.
0 °F D.B.
2. SPECIFICATIONS
2-1. Unit Specifications
Outdoor Unit
Indoor Unit
CMH1972
KMHS0972 × 3
< 230V >
Type
3-Room Multi Outdoor Unit
Number of Connectable Indoor Units
3
Number of Operatable Indoor Units
3
Voltage Rating
Performance
Total Capacity
Sensible Capacity
Latent Capacity
Air Circulation (High)
Electrical Rating
Available Voltage Range
Running Amperes
Power Input
Power Factor
SEER
HSPF
Compressor Locked Rotor Amperes
Fuse or Circuit Breaker Capacity
Features (Outdoor Unit)
Control
Fan Speeds
Compressor
Refrigerant / Amount charged at shipment
Refrigerant Control
Operation Sound (High) Cool/Heat
Refrigerant Tubing Connections
Max. allowable tubing length per unit
Refrigerant
Narrow tube
Tube Diameter
Wide tube
Dimensions & Weight (Outdoor Unit)
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Net
Weight
Shipping
Shipping Volume
230V Single-Phase 60Hz
Cooling
19,100 ( 9,800 to 19,100 )
5.60 ( 2.90 to 5.60 )
16,300
2,800
1,707 (2,900)
BTU/h
kW
BTU/h
BTU/h
ft3/min (m3/h)
Heating
24,800 ( 11,600 to 24,800 )
7.30 ( 3.40 to 7.30 )
1,707 (2,900)
Cooling
Heating
187 to 253
V
A
W
%
BTU/Wh
BTU/Wh
A
A
6.7
1,500
98
13
-
7.7
1,735
98
7.7
14.5
20
ft. (m)
inch (mm)
inch (mm)
Microprocessor
Auto (Hi, Me, Lo)
DC Twin Rotary (Inverter)
R410A / 6.17 (2,800)
Electric Expansion Valve
50 / 52
Flare Type
82 (25)
1/4 (6.35) × 3
3/8 (9.52) × 3
inch
(mm)
inch
(mm)
Ib. (kg)
Ib. (kg)
cu.ft (m3)
29-1/8 × 35-7/16 × 12-19/32
(740 × 900 × 320)
33-27/32 × 40-5/8 × 16-1/4
(860 × 1,032 × 413)
143.3 (65.0)
152.1 (69.0)
12.71 (0.36)
Ib. (g)
dB-A
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks:
1. The Values shown in performance section and electrical rating section above are based on the following unit combination.
For other combination unit, please refer to the "Unit Combination Tables" in this manual.
Indoor Unit : KMHS0972 3units
Outdoor Unit : CMH1972 1unit
2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B
Heating : Indoor air temp. 70°F D.B.
Outdoor air temp. 95°F D.B./ 75°F W.B.
Outdoor air temp. 47°F D.B./ 43°F W.B.
6
Outdoor Unit
Indoor Unit
CMH1972
KMHS0972 × 3
< 208V >
Type
3-Room Multi Outdoor Unit
Number of Connectable Indoor Units
3
Number of Operatable Indoor Units
3
Voltage Rating
Performance
Total Capacity
Sensible Capacity
Latent Capacity
Air Circulation (High)
Electrical Rating
Available Voltage Range
Running Amperes
Power Input
Power Factor
SEER
HSPF
Compressor Locked Rotor Amperes
Fuse or Circuit Breaker Capacity
Features (Outdoor Unit)
Control
Fan Speeds
Compressor
Refrigerant / Amount charged at shipment
Refrigerant Control
Operation Sound (High) Cool/Heat
Refrigerant Tubing Connections
Max. allowable tubing length per unit
Refrigerant
Narrow tube
Tube Diameter
Wide tube
Dimensions & Weight (Outdoor Unit)
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Net
Weight
Shipping
Shipping Volume
208V Single-Phase 60Hz
Cooling
19,100 ( 9,800 to 19,100 )
5.60 ( 2.90 to 5.60 )
16,300
2,800
1,707 (2,900)
BTU/h
kW
BTU/h
BTU/h
ft3/min (m3/h)
Heating
24,800 ( 11,600 to 24,800 )
7.30 ( 3.40 to 7.30 )
1,707 (2,900)
Cooling
Heating
187 to 253
V
A
W
%
BTU/Wh
BTU/Wh
A
A
7.4
1,500
98
13
-
8.5
1,735
98
7.7
14.5
20
ft. (m)
inch (mm)
inch (mm)
Microprocessor
Auto (Hi, Me, Lo)
DC Twin Rotary (Inverter)
R410A / 6.17 (2,800)
Electric Expansion Valve
50 / 52
Flare Type
82 (25)
1/4 (6.35) × 3
3/8 (9.52) × 3
inch
(mm)
inch
(mm)
Ib. (kg)
Ib. (kg)
cu.ft (m3)
29-1/8 × 35-7/16 × 12-19/32
(740 × 900 × 320)
33-27/32 × 40-5/8 × 16-1/4
(860 × 1,032 × 413)
143.3 (65.0)
152.1 (69.0)
12.71 (0.36)
Ib. (g)
dB-A
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks:
1. The Values shown in performance section and electrical rating section above are based on the following unit combination.
For other combination unit, please refer to the "Unit Combination Tables" in this manual.
Indoor Unit : KMHS0972 3units
Outdoor Unit : CMH1972 1unit
2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B
Heating : Indoor air temp. 70°F D.B.
Outdoor air temp. 95°F D.B./ 75°F W.B.
Outdoor air temp. 47°F D.B./ 43°F W.B.
7
Outdoor Unit
Indoor Unit
CMH2472
KMHS0972 × 3
< 230V >
Type
4-Room Multi Outdoor Unit
Number of Connectable Indoor Units
4
Number of Operatable Indoor Units
3
Voltage Rating
Performance
Total Capacity
Sensible Capacity
Latent Capacity
Air Circulation (High)
Electrical Rating
Available Voltage Range
Running Amperes
Power Input
Power Factor
SEER
HSPF
Compressor Locked Rotor Amperes
Fuse or Circuit Breaker Capacity
Features (Outdoor Unit)
Control
Fan Speeds
Compressor
Refrigerant / Amount charged at shipment
Refrigerant Control
Operation Sound (High) Cool/Heat
Refrigerant Tubing Connections
Max. allowable tubing length per unit
Refrigerant
Narrow tube
Tube Diameter
Wide tube
Dimensions & Weight (Outdoor Unit)
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Net
Weight
Shipping
Shipping Volume
230V Single-Phase 60Hz
Cooling
23,200 ( 9,800 to 23,200 )
6.80 ( 2.90 to 6.80 )
19,600
3,600
1,707 (2,900)
BTU/h
kW
BTU/h
BTU/h
ft3/min (m3/h)
Heating
29,200 ( 11,600 to 29,200 )
8.60 ( 3.40 to 8.60 )
1,707 (2,900)
Cooling
Heating
187 to 253
V
A
W
%
BTU/Wh
BTU/Wh
A
A
9.0
2,040
98
13
-
10.1
2,270
98
7.7
14.5
20
ft. (m)
inch (mm)
inch (mm)
Microprocessor
Auto (Hi, Me, Lo)
DC Twin Rotary (Inverter)
R410A / 6.17 (2,800)
Electric Expansion Valve
50 / 52
Flare Type
82 (25)
1/4 (6.35) × 4
3/8 (9.52) × 3 + 1/2 (12.7) × 1
inch
(mm)
inch
(mm)
Ib. (kg)
Ib. (kg)
cu.ft (m3)
29-1/8 × 35-7/16 × 12-19/32
(740 × 900 × 320)
33-27/32 × 40-5/8 × 16-1/4
(860 × 1,032 × 413)
143.3 (65.0)
152.1 (69.0)
12.71 (0.36)
Ib. (g)
dB-A
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks:
1. The Values shown in performance section and electrical rating section above are based on the following unit combination.
For other combination unit, please refer to the "Unit Combination Tables" in this manual.
Indoor Unit : KMHS0972 3units
Outdoor Unit : CMH2472 1unit
2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B
Heating : Indoor air temp. 70°F D.B.
Outdoor air temp. 95°F D.B./ 75°F W.B.
Outdoor air temp. 47°F D.B./ 43°F W.B.
8
Outdoor Unit
Indoor Unit
CMH2472
KMHS0972 × 3
< 208V >
Type
4-Room Multi Outdoor Unit
Number of Connectable Indoor Units
4
Number of Operatable Indoor Units
3
Voltage Rating
Performance
Total Capacity
Sensible Capacity
Latent Capacity
Air Circulation (High)
Electrical Rating
Available Voltage Range
Running Amperes
Power Input
Power Factor
SEER
HSPF
Compressor Locked Rotor Amperes
Fuse or Circuit Breaker Capacity
Features (Outdoor Unit)
Control
Fan Speeds
Compressor
Refrigerant / Amount charged at shipment
Refrigerant Control
Operation Sound (High) Cool/Heat
Refrigerant Tubing Connections
Max. allowable tubing length per unit
Refrigerant
Narrow tube
Tube Diameter
Wide tube
Dimensions & Weight (Outdoor Unit)
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Net
Weight
Shipping
Shipping Volume
208V Single-Phase 60Hz
Cooling
23,200 ( 9,800 to 23,200 )
6.80 ( 2.90 to 6.80 )
19,600
3,600
1,707 (2,900)
BTU/h
kW
BTU/h
BTU/h
ft3/min (m3/h)
Heating
29,200 ( 11,600 to 29,200 )
8.60 ( 3.40 to 8.60 )
1,707 (2,900)
Cooling
Heating
187 to 253
V
A
W
%
BTU/Wh
BTU/Wh
A
A
10.0
2,040
98
13
-
11.1
2,270
98
7.7
14.5
20
ft. (m)
inch (mm)
inch (mm)
Microprocessor
Auto (Hi, Me, Lo)
DC Twin Rotary (Inverter)
R410A / 6.17 (2,800)
Electric Expansion Valve
50 / 52
Flare Type
82 (25)
1/4 (6.35) × 4
3/8 (9.52) × 3 + 1/2 (12.7) × 1
inch
(mm)
inch
(mm)
Ib. (kg)
Ib. (kg)
cu.ft (m3)
29-1/8 × 35-7/16 × 12-19/32
(740 × 900 × 320)
33-27/32 × 40-5/8 × 16-1/4
(860 × 1,032 × 413)
143.3 (65.0)
152.1 (69.0)
12.71 (0.36)
Ib. (g)
dB-A
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks:
1. The Values shown in performance section and electrical rating section above are based on the following unit combination.
For other combination unit, please refer to the "Unit Combination Tables" in this manual.
Indoor Unit : KMHS0972 3units
Outdoor Unit : CMH2472 1unit
2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B
Heating : Indoor air temp. 70°F D.B.
Outdoor air temp. 95°F D.B./ 75°F W.B.
Outdoor air temp. 47°F D.B./ 43°F W.B.
9
Outdoor Unit
Indoor Unit
CMH3172
KMHS0972 × 4
< 230V >
Type
4-Room Multi Outdoor Unit
Number of Connectable Indoor Units
4
Number of Operatable Indoor Units
4
Voltage Rating
Performance
Total Capacity
Sensible Capacity
Latent Capacity
Air Circulation (High)
Electrical Rating
Available Voltage Range
Running Amperes
Power Input
Power Factor
SEER
HSPF
Compressor Locked Rotor Amperes
Fuse or Circuit Breaker Capacity
Features (Outdoor Unit)
Control
Fan Speeds
Compressor
Refrigerant / Amount charged at shipment
Refrigerant Control
Operation Sound (High) Cool/Heat
Refrigerant Tubing Connections
Max. allowable tubing length per unit
Refrigerant
Narrow tube
Tube Diameter
Wide tube
Dimensions & Weight (Outdoor Unit)
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Net
Weight
Shipping
Shipping Volume
230V Single-Phase 60Hz
Cooling
30,600 ( 9,800 to 30,600 )
9.00 ( 2.90 to 9.00 )
25,800
4,800
1,942 (3,300)
BTU/h
kW
BTU/h
BTU/h
ft3/min (m3/h)
Heating
32,000 ( 11,600 to 32,000 )
9.40 ( 3.40 to 9.40 )
1,807 (3,070)
Cooling
Heating
187 to 253
V
A
W
%
BTU/Wh
BTU/Wh
A
A
12.3
2,800
99
16
-
10.3
2,350
99
7.7
17.0
20
ft. (m)
inch (mm)
inch (mm)
Microprocessor
Auto (Hi, Me, Lo)
DC Twin Rotary (Inverter)
R410A / 8.38 (3,800)
Electric Expansion Valve
53 / 52
Flare Type
100 (30.5)
1/4 (6.35) × 4
3/8 (9.52) × 2 + 1/2 (12.7) × 2
inch
(mm)
inch
(mm)
Ib. (kg)
Ib. (kg)
cu.ft (m3)
35-1/32 × 35-7/16 × 12-19/32
(890 × 900 × 320)
39-3/4 × 40-5/8 × 16-1/4
(1,010 × 1,032 × 413)
180.8 (82.0)
189.6 (86.0)
15.18 (0.43)
Ib. (g)
dB-A
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks:
1. The Values shown in performance section and electrical rating section above are based on the following unit combination.
For other combination unit, please refer to the "Unit Combination Tables" in this manual.
Indoor Unit : KMHS0972 4units
Outdoor Unit : CMH3172 1unit
2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B
Heating : Indoor air temp. 70°F D.B.
Outdoor air temp. 95°F D.B./ 75°F W.B.
Outdoor air temp. 47°F D.B./ 43°F W.B.
10
Outdoor Unit
Indoor Unit
CMH3172
KMHS0972 × 4
< 208V >
Type
4-Room Multi Outdoor Unit
Number of Connectable Indoor Units
4
Number of Operatable Indoor Units
4
Voltage Rating
Performance
Total Capacity
Sensible Capacity
Latent Capacity
Air Circulation (High)
Electrical Rating
Available Voltage Range
Running Amperes
Power Input
Power Factor
SEER
HSPF
Compressor Locked Rotor Amperes
Fuse or Circuit Breaker Capacity
Features (Outdoor Unit)
Control
Fan Speeds
Compressor
Refrigerant / Amount charged at shipment
Refrigerant Control
Operation Sound (High) Cool/Heat
Refrigerant Tubing Connections
Max. allowable tubing length per uint
Refrigerant
Narrow tube
Tube Diameter
Wide tube
Dimensions & Weight (Outdoor Unit)
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Net
Weight
Shipping
Shipping Volume
208V Single-Phase 60Hz
Cooling
28,600 ( 9,800 to 28,600 )
8.40 ( 2.90 to 8.40 )
24,200
4,400
1,942 (3,300)
BTU/h
kW
BTU/h
BTU/h
ft3/min (m3/h)
Heating
32,000 ( 11,600 to 32,000 )
9.40 ( 3.40 to 9.40 )
1,807 (3,070)
Cooling
Heating
187 to 253
V
A
W
%
BTU/Wh
BTU/Wh
A
A
13.6
2,800
99
16
-
11.4
2,350
99
7.7
17.0
20
ft. (m)
inch (mm)
inch (mm)
Microprocessor
Auto (Hi, Me, Lo)
DC Twin Rotary (Inverter)
R410A / 8.38 (3,800)
Electric Expansion Valve
53 / 52
Flare Type
100 (30.5)
1/4 (6.35) × 4
3/8 (9.52) × 2 + 1/2 (12.7) × 2
inch
(mm)
inch
(mm)
Ib. (kg)
Ib. (kg)
cu.ft (m3)
35-1/32 × 35-7/16 × 12-19/32
(890 × 900 × 320)
39-3/4 × 40-5/8 × 16-1/4
(1,010 × 1,032 × 413)
180.8 (82.0)
189.6 (86.0)
15.18 (0.43)
Ib. (g)
dB-A
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks:
1. The Values shown in performance section and electrical rating section above are based on the following unit combination.
For other combination unit, please refer to the "Unit Combination Tables" in this manual.
Indoor Unit : KMHS0972 4units
Outdoor Unit : CMH3172 1unit
2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B
Heating : Indoor air temp. 70°F D.B.
Outdoor air temp. 95°F D.B./ 75°F W.B.
Outdoor air temp. 47°F D.B./ 43°F W.B.
11
2-2. Major Component Specifications
2-2-1. Outdoor Unit
Outdoor Unit
CMH1972
Control PCB
Part No.
Controls
Control Circuit Fuse
CB-CMH1972
Microprocessor
250V 25A
Compressor
Type
Compressor Model / Nominal Output
Pints (cc)
Compressor Oil ... Amount
Coil Resistance (Ambient Temp. 68 °F (20 °C)) Ohm
DC Twin Rotary (Hermetic)
5KD240XAB21 / 1,700W
FV50S ... 1.91 (900)
U - V : 0.720
V - W : 0.708
W - U : 0.726
Safety Device
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Yes
Yes
Yes
CS-7LN115
Open : 239 °F (115 °C), Close : 212 °F (100 °C)
230V 30W
Operation cut-off control in abnormal ambient Temp.
Overload Relay
Run Capacitor
Model
Operation Temp.
Micro F
VAC
Crankcase Heater
Fan
Type
Q'ty ... Dia.
Propeller
1 ... D18-1/8 (D460)
inch (mm)
Fan Motor
Type
Model ... Q'ty
No. of Poles
Rough Measure RPM (Cool / Heat)
Nominal Output
Coil Resistance
(Ambient Temp. 68 °F (20 °C))
Safety Device
Type
Over-Current Protection
Over-Heat Protection
Run Capacitor
DC Motor
SIC-71FW-D490-1 ... 1
8
750 / 750
90
W
Ohm
-
Micro F
VAC
Internal Controller
Yes
Yes
-
ft2 (m2)
Aluminum Plate Fin / Copper Tube
2
18.1
6.40 (0.595)
Heat Exchanger Coil
Coil
Rows
Fins per inch
Face Area
External Finish
Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
12
Outdoor Unit
CMH2472
Control PCB
Part No.
Controls
Control Circuit Fuse
CB-CMH2472
Microprocessor
250V 25A
Compressor
Type
Compressor Model / Nominal Output
Pints (cc)
Compressor Oil ... Amount
Coil Resistance (Ambient Temp. 68 °F (20 °C)) Ohm
DC Twin Rotary (Hermetic)
5KD240XAB21 / 1,700W
FV50S ... 1.91 (900)
U - V : 0.720
V - W : 0.708
W - U : 0.726
Safety Device
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Yes
Yes
Yes
CS-7LN115
Open : 239 °F (115 °C), Close : 212 °F (100 °C)
230V 30W
Operation cut-off control in abnormal ambient Temp.
Overload Relay
Run Capacitor
Model
Operation Temp.
Micro F
VAC
Crankcase Heater
Fan
Type
Q'ty ... Dia.
Propeller
1 ... D18-1/8 (D460)
inch (mm)
Fan Motor
Type
Model ... Q'ty
No. of Poles
Rough Measure RPM (Cool / Heat)
Nominal Output
Coil Resistance
(Ambient Temp. 68 °F (20 °C))
Safety Device
Type
Over-Current Protection
Over-Heat Protection
Run Capacitor
DC Motor
SIC-71FW-D490-1 ... 1
8
750 / 750
90
W
Ohm
-
Micro F
VAC
Internal Controller
Yes
Yes
-
ft2 (m2)
Aluminum Plate Fin / Copper Tube
2
18.1
6.40 (0.595)
Heat Exchanger Coil
Coil
Rows
Fins per inch
Face Area
External Finish
Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
13
Outdoor Unit
CMH3172
Control PCB
Part No.
Controls
Control Circuit Fuse
CB-CMH3172
Microprocessor
250V 25A
Compressor
Type
Compressor Model / Nominal Output
Pints (cc)
Compressor Oil ... Amount
Coil Resistance (Ambient Temp. 68 °F (20 °C)) Ohm
DC Twin Rotary (Hermetic)
5JD420XAB22 / 3,000W
FV50S ... 2.55 (1,200)
U - V : 0.435
V - W : 0.441
W - U : 0.452
Safety Device
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Yes
Yes
Yes
CS-7LN115
Open : 239 °F (115 °C), Close : 212 °F (100 °C)
230V 30W
Operation cut-off control in abnormal ambient Temp.
Overload Relay
Run Capacitor
Model
Operation Temp.
Micro F
VAC
Crankcase Heater
Fan
Type
Q'ty ... Dia.
Propeller
1 ... D18-1/8 (D460)
inch (mm)
Fan Motor
Type
Model ... Q'ty
No. of Poles
Rough Measure RPM (Cool / Heat)
Nominal Output
Coil Resistance
(Ambient Temp. 68 °F (20 °C))
Safety Device
Type
Over-Current Protection
Over-Heat Protection
Run Capacitor
DC Motor
SIC-71FW-D490-1 ... 1
8
800 / 750
90
W
Ohm
-
Micro F
VAC
Internal Controller
Yes
Yes
-
ft2 (m2)
Aluminum Plate Fin / Copper Tube
2
18.1
7.75 (0.72)
Heat Exchanger Coil
Coil
Rows
Fins per inch
Face Area
External Finish
Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
14
2-3. Other Component Specifications
Quantity of Sensor
Model No.
of sensor
CMH1972
CMH2472
CMH3172
Outdoor air temp sensor
TKS295B
1
1
1
Outdoor heat exchanger sensor
TKS292B
1
1
1
AW / AN sensor
TKS292B
1/1
1/1
1/1
BW / BN sensor
TKS292B
1/1
1/1
1/1
CW / CN sensor
TKS292B
1/1
1/1
1/1
DW / DN sensor
TKS292B
0
1/1
1/1
Sensor Name
Resistance (k ohm)
40
35
30
25
20
15
10
5
0
Compressor temp sensor
Quantity of Sensor
Model No.
of sensor
CMH1972
CMH2472
CMH3172
TKS293B
1
1
1
200
Resistance (k ohm)
Sensor Name
-4 5
14 23 32 41 50 59 68
(-20)(-15)(-10) (-5) (0) (5) (10) (15) (20)
Temperature F ( C)
180
160
140
120
100
80
60
40
20
0
32 50 68 86 104 122 140 158 176 194
(0) (10) (20) (30) (40) (50) (60) (70) (80) (90)
Temperature F ( C)
15
3. DIMENSIONAL DATA
Outdoor Unit CMH1972
2-15/16
Wide tube service valve
dia.3/8" (9.52) × 3
1-13/16
4-7/16 2-15/16 2-3/4
5-29/32 2-27/32 2-3/4
29-1/8(740)
Narrow tube service valve
dia.1/4" (6.35) × 3
23/32
35-7/16(900)
14-17/32
12-19/32(320)
15/32
13-19/32
23
/32
ID :
1-3/8
11-17/32
5-11/32
5-I
D:
15
/16
23-15/16
2-1/32
4-1/2
2-1/16
Unit: inch(mm)
16
CMH2472
2-15/16
Wide tube service valve
dia.3/8" (9.52) × 3
Narrow tube service valve
dia.1/4" (6.35) × 4
1-13/16
Wide tube service valve
dia.1/2" (12.70) × 1
4-7/16 2-15/16 2-3/4 2-3/4
5-29/32 2-27/32 2-3/4 2-3/4
29-1/8(740)
35-7/16(900)
14-17/32
12-19/32(320)
15/32
13-19/32
23
/32
ID:
1-3/8
11-17/32
5-11/32
5-I
D:
15
/16
23-15/16
23/32
Outdoor Unit
2-1/32
4-1/2
2-1/16
2-13/32
Unit: inch(mm)
17
CMH3172
2-15/16
Wide tube service valve
dia.3/8" (9.52) × 2
Narrow tube service valve
dia.1/4" (6.35) × 4
35-1/32(890)
1-13/16
4-7/16 2-15/16 2-3/4 2-3/4
2-7/8 2-3/4 2-3/4
Wide tube service valve
dia.1/2" (12.70) × 2
5-29/32
35-7/16(900)
14-17/32
12-19/32(320)
15/32
13-19/32
23
/32
ID :
1-3/8
11-17/32
5-11/32
5-I
D:
15
/16
23-15/16
23/32
Outdoor Unit
2-1/32
4-1/2
2-1/16
2-13/32
Unit: inch(mm)
18
4. REFRIGERANT FLOW DIAGRAM
4-1. Refrigerant Flow Diagram
Outdoor Unit CMH1972
Outdoor unit
Wide tube
O.D.3/8"
Service valve on
wide tube
CW
Sub
accumulator
Main
accumulator
BW
High pressure
switch
H.P.
O.D.3/8"
AW
O.D.3/8"
Compressor
Indoor unit
Header
Defrost valve for
hot gas bypass
Narrow tube
Service valve on
narrow tube
CN
O.D.1/4"
M
M
BN
O.D.1/4"
Cooling cycle
M
AN
O.D.1/4"
Electric
expansion
valve
S
Heat exchanger
4-way
valve
Strainer
Heating cycle
Header
Defrosting cycle
Insulation of Refrigerant Tubing
IMPORTANT
Because capillary tubing is used in the outdoor unit, both the
wide and narrow tubes of this air conditioner become cold. To
prevent heat loss and wet floors due to dripping of
condensation, both tubes must be well insulated with a
proper insulation material. The thickness of the insulation
should be a min.5/16"(8 mm).
CAUTION
After a tube has been insulated,
never try to bend it into a narrow
curve because it can cause the tube
to break or crack.
19
Insulation
Thickness:
Min.5/16"(8 mm)
Thickness:
Min.5/16"(8 mm)
Narrow tube
Wide tube
Outdoor Unit CMH2472
Outdoor unit
Wide tube
O.D.3/8"
Service valve on
wide tube
DW
Sub
accumulator
Main
accumulator
CW
Compressor
Indoor unit
High pressure
switch
H.P.
O.D.3/8"
BW
O.D.3/8"
AW
O.D.1/2"
Narrow tube
Service valve on
narrow tube
DN
Electric
expansion
valve
Defrost valve for
hot gas bypass
M
S
Heat exchanger
4-way
valve
Header
O.D.1/4"
M
CN
O.D.1/4"
M
BN
O.D.1/4"
O.D.1/4"
Cooling cycle
M
AN
Strainer
Heating cycle
Header
Defrosting cycle
Insulation of Refrigerant Tubing
IMPORTANT
Because capillary tubing is used in the outdoor unit, both the
wide and narrow tubes of this air conditioner become cold. To
prevent heat loss and wet floors due to dripping of
condensation, both tubes must be well insulated with a
proper insulation material. The thickness of the insulation
should be a min.5/16"(8 mm).
CAUTION
After a tube has been insulated,
never try to bend it into a narrow
curve because it can cause the tube
to break or crack.
20
Insulation
Thickness:
Min.5/16"(8 mm)
Thickness:
Min.5/16"(8 mm)
Narrow tube
Wide tube
Outdoor Unit CMH3172
Outdoor unit
Wide tube
O.D.3/8"
Service valve on
wide tube
DW
Sub
accumulator
Main
accumulator
CW
High pressure
switch
H.P.
O.D.3/8"
BW
Compressor
Indoor unit
O.D.1/2"
AW
O.D.1/2"
Narrow tube
Electric
expansion
valve
Service valve on
narrow tube
DN
M
O.D.1/4"
S
M
CN
O.D.1/4"
M
BN
O.D.1/4"
Cooling cycle
M
AN
O.D.1/4"
Defrost valve for
hot gas bypass
Heat exchanger
4-way
valve
Header
Strainer
Heating cycle
Header
Defrosting cycle
Insulation of Refrigerant Tubing
IMPORTANT
Because capillary tubing is used in the outdoor unit, both the
wide and narrow tubes of this air conditioner become cold. To
prevent heat loss and wet floors due to dripping of
condensation, both tubes must be well insulated with a
proper insulation material. The thickness of the insulation
should be a min.5/16"(8 mm).
CAUTION
After a tube has been insulated,
never try to bend it into a narrow
curve because it can cause the tube
to break or crack.
21
Insulation
Thickness:
Min.5/16"(8 mm)
Thickness:
Min.5/16"(8 mm)
Narrow tube
Wide tube
5. PERFORMANCE DATA
5-1. Temperature Charts
5-1-1. Temperature Charts (CMH1972)
Indoor Unit KMHS0772 × 1
Outdoor Unit CMH1972
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
(1) High pressure performance chart
188
(1.3)
Lo fan
Hi fan
HH fan
6°F
174
(1.2)
oor
Ind
High pressure at wide tube service valve
psig (MPaG)
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
Low pressure at wide tube service valve
psig (MPaG)
Cooling Characteristics
m
ir te
C)
30°
(
p. 8
a
F
80°
(27
°C)
)
4°C
F (2
75°
160
(1.1)
146
(1.0) 77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
506
(3.5)
362
(2.5)
290
(2.0) 23
(-5)
104
(40)
(2) Operating current performance chart
°C)
F (23
p. 73°
ir tem
C)
a
°
r
1
o
(2
o
Ind
70°F
)
(17°C
63°F
434
(3.0)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(2) Operating current performance chart
8
Lo fan
Hi fan
HH fan
Operating current (A)
Operating current (A)
5
4
°C
86°F (30
ir temp.
Indoor a
)
°C
80°F (27
°C)
75°F (24
3
)
7
Indoor air
6
(23°C)
temp. 73°F
)
70°F (21°C
)
63°F (17°C
5
2
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
23
(-5)
104
(40)
32
(0)
41
(5)
50
(10)
59
(15)
68
(20)
77
(25)
Outdoor air temperature °F (°C)
(3) Indoor discharge air performance chart
(3) Indoor discharge air performance chart
Hi fan
HH fan
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
140(60)
Lo fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
Indoor
°C)
°F (30
mp. 86
air te
7°C)
80°F (2
4°C)
75°F (2
50.0(10)
46.4( 8)
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
131(55)
113(45)
104(40)
95(35)
86(30)
77(25)
23
(-5)
104
(40)
C)
(23°
3°F
p. 7
C)
m
°
e
(21
ir t
or a
70°F
)
Indo
C
°
7
(1
63°F
122(50)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6t (7.5m). If the tubing length is different, the performance chart will vary.
22
Indoor Unit KMHS0972 × 1
Outdoor Unit CMH1972
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
(1) High pressure performance chart
188
(1.3)
Lo fan
HH fan
°C )
F (30
p. 86°
174
(1.2)
m
r air te
Indoo
7°C)
(2
F
°
80
)
(24°C
75°F
160
(1.1)
146
(1.0) 77
(25)
Hi fan
High pressure at wide tube service valve
psig (MPaG)
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
Low pressure at wide tube service valve
psig (MPaG)
Cooling Characteristics
86
95
(30)
(35)
Outdoor air temperature °F (°C)
506
(3.5)
434
(3.0)
(2) Operating current performance chart
or a
Indo
362
(2.5)
290
(2.0) 23
(-5)
104
(40)
)
23°C
°F (
)
. 73
1°C
2
(
70°F
C)
(17°
63°F
mp
ir te
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(2) Operating current performance chart
8
Lo fan
Hi fan
HH fan
Operating current (A)
Operating current (A)
6
5
6°F
.8
emp
air t
or
)
Indo
7°C
F (2
80°
C)
°
4
F (2
75°
4
3
C)
(30°
77
(25)
7
)
(23°C
73°F
temp.
C)
°
ir
1
a
(2
r
70°F
Indoo
)
(17°C
63°F
6
5
86
95
(30)
(35)
Outdoor air temperature °F (°C)
104
(40)
23
(-5)
(3) Indoor discharge air performance chart
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(3) Indoor discharge air performance chart
Hi fan
HH fan
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
140(60)
Lo fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
Indoo
(30°C
p. 86°F
r air tem
53.6(12)
7°C
80°F (2
50.0(10)
(24°C)
46.4( 8)
77
(25)
75°F
86
95
(30)
(35)
Outdoor air temperature °F (°C)
)
)
104
(40)
131(55)
C)
F (23°C
°F
mp. 73
C)
°
1
70°F (2
7°C)
(1
F
°
3
6
122(50)
air te
Indoor
113(45)
104(40)
95(35)
86(30)
77(25)
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
23
Outdoor Unit CMH1972
Indoor Unit KMHS1272 × 1
Cooling Characteristics
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
174
(1.2)
Lo fan
(1) High pressure performance chart
Hi fan
High pressure at wide tube service valve
psig (MPaG)
Low pressure at wide tube service valve
psig (MPaG)
(1) Low pressure performance chart
HH fan
)
(30°C
p. 86°F
air tem
Indoor
7°C)
80°F (2
)
(24°C
75°F
160
(1.1)
146
(1.0)
132
(0.9) 77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
578
(4.0)
506
(3.5)
434
(3.0)
p
tem
)
°C
Ind
(21 )
C
°F
720 (17°
°F
63
r
oo
362
(2.5)
104
(40)
23
(-5)
(2) Operating current performance chart
3
.7
32
(0)
)
°C
(23
°F
air
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(2) Operating current performance chart
10
Lo fan
Hi fan
HH fan
9
5
p. 86
ir tem
or a
o
d
n
I
C)
(27°
80°F
C)
°
(24
75°F
4
Operating current (A)
Operating current (A)
6
0°C)
°F (3
)
°C
(23
°F
3
)
7
p.
1°C
tem °F (2 °C)
0
air
7
7
r
1
(
oo
°F
Ind
63
8
7
6
5
4
3
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
3
104
(40)
(3) Indoor discharge air performance chart
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(3) Indoor discharge air performance chart
Hi fan
HH fan
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
140(60)
Lo fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
)
°F (30°C
r temp. 86
Indoor ai
80°F (27
°C)
53.6(12)
4°C)
50.0(10)
46.4( 8)
77
(25)
75°F (2
86
95
(30)
(35)
Outdoor air temperature °F (°C)
131(55)
113(45)
In
104(40)
95(35)
86(30)
77(25)
23
(-5)
104
(40)
)
°C
(23 )
°F
C
°
3
7
(21 )
p.
em 70°F 17°C
(
ir t
a
F
°
or
63
do
122(50)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
24
Indoor Unit KMHS1872 × 1
Outdoor Unit CMH1972
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
(1) High pressure performance chart
High pressure at wide tube service valve
psig (MPaG)
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
Low pressure at wide tube service valve
psig (MPaG)
Cooling Characteristics
HH fan
174
(1.2)
Lo fan
Hi fan
p.
ir tem
°C)
F (30
86°
or a
Indo
)
(27°C
80°F
C)
(24°
75°F
160
(1.1)
146
(1.0)
132
(0.9) 77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
578
(4.0)
506
(3.5)
434
(3.0)
362
(2.5) 23
(-5)
104
(40)
(2) Operating current performance chart
)
°C
(23
°F
3
7
p.
C)
tem
21°
air
F(
°
r
C)
0
7
oo
17°
Ind
F(
63°
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(2) Operating current performance chart
8
Lo fan
Hi fan
HH fan
Operating current (A)
Operating current (A)
12
7
6
ir t
or a
Indo
80°F
C)
(27°
F(
75°
5
77
(25)
)
30°C
(
6°F
.8
emp
2 4°
C)
11
°C)
(23
°F
3
7
.
)
mp
1°C
ir te
F (2
or a
70°
o
)
d
In
7°C
F (1
63°
10
9
8
7
86
95
(30)
(35)
Outdoor air temperature °F (°C)
6
104
(40)
(3) Indoor discharge air performance chart
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(3) Indoor discharge air performance chart
Hi fan
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
140(60)
Lo fan
HH fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
temp.
Indoor air
)
86°F (30°C
)
80°F (27°C
)
75°F (24°C
50.0(10)
46.4( 8)
77
(25)
131(55)
122(50)
113(45)
ir t
or a
Indo
104(40)
C)
(23°
3°F
)
1°C
F (2
70°
)
C
(17°
63°F
.7
emp
95(35)
86(30)
77(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
104
(40)
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
25
5-1-2. Temperature Charts (CMH2472)
Indoor Unit KMHS0772 × 1
Outdoor Unit CMH2472
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
(1) High pressure performance chart
188
(1.3)
Lo fan
Hi fan
HH fan
°C)
(30
°F
. 86
mp
r te
r ai
oo
Ind
174
(1.2)
High pressure at wide tube service valve
psig (MPaG)
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
Low pressure at wide tube service valve
psig (MPaG)
Cooling Characteristics
°C)
(27
C)
24°
F(
F
80°
75°
160
(1.1)
146
(1.0) 77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
506
(3.5)
434
(3.0)
(2) Operating current performance chart
temp.
)
(23°C
73°F
1°C)
(2
F
°
70
7°C)
63°F (1
362
(2.5)
290
(2.0) 23
(-5)
104
(40)
r air
Indoo
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(2) Operating current performance chart
8
Lo fan
Hi fan
HH fan
Operating current (A)
Operating current (A)
5
4
0°C)
86°F (3
ir temp.
Indoor a
7°C)
80°F (2
4°C)
75°F (2
3
7
3°C)
mp. 73°F (2
1 C)
F (21°
70°F
7 C)
F (17°
63°F
Indoor air te
6
5
2
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
23
(-5)
104
(40)
32
(0)
41
(5)
50
(10)
59
(15)
68
(20)
77
(25)
Outdoor air temperature °F (°C)
(3) Indoor discharge air performance chart
(3) Indoor discharge air performance chart
Hi fan
HH fan
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
140(60)
Lo fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
p. 86°F
air tem
Indoor
(30°C)
7°C)
80°F (2
4°C)
75°F (2
50.0(10)
46.4( 8)
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
131(55)
113(45)
104(40)
95(35)
86(30)
77(25)
23
(-5)
104
(40)
C)
(23°
3°F
p. 7
)
m
C
e
ir t
(21°
or a
70°F
Indo
)
C
°
(17
63°F
122(50)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6t (7.5m). If the tubing length is different, the performance chart will vary.
26
Indoor Unit KMHS0972 × 1
Outdoor Unit CMH2472
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
(1) High pressure performance chart
188
(1.3)
Lo fan
HH fan
°C)
174
(1.2)
m
r air te
Indoo
)
C
(27°
80°F
)
(24°C
F
°
5
7
160
(1.1)
146
(1.0) 77
(25)
Hi fan
High pressure at wide tube service valve
psig (MPaG)
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
Low pressure at wide tube service valve
psig (MPaG)
Cooling Characteristics
°F (30
p. 86
86
95
(30)
(35)
Outdoor air temperature °F (°C)
506
(3.5)
362
(2.5)
290
(2.0) 23
(-5)
104
(40)
(2) Operating current performance chart
C)
(23°
3°F
C)
p. 7
°
1
m
2
e
(
ir t
70°F
or a
Indo
C)
(17°
63°F
434
(3.0)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(2) Operating current performance chart
8
Lo fan
Hi fan
HH fan
Operating current (A)
Operating current (A)
6
5
C)
30°
°F (
. 86
mp
ir te
or a
Indo
C)
(27°
)
80°F
4°C
F (2
75°
4
3
77
(25)
7
3°C)
3°F (2
mp. 7
°C)
1
(2
70°F
°C)
7
(1
63°F
ir te
door a
In
6
5
86
95
(30)
(35)
Outdoor air temperature °F (°C)
104
(40)
23
(-5)
(3) Indoor discharge air performance chart
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(3) Indoor discharge air performance chart
Hi fan
HH fan
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
140(60)
Lo fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
mp.
or air te
0°C)
86°F (3
Indo
°C)
53.6(12)
7
80°F (2
50.0(10)
4°C)
75°F (2
46.4( 8)
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
104
(40)
131(55)
122(50)
r air
Indoo
113(45)
temp.
)
(23°C
73°F
°C)
1
(2
70°F
)
(17°C
63°F
104(40)
95(35)
86(30)
77(25)
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
27
Indoor Unit KMHS1272 × 1
Outdoor Unit CMH2472
Cooling Characteristics
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
174
(1.2)
Lo fan
(1) High pressure performance chart
Hi fan
High pressure at wide tube service valve
psig (MPaG)
Low pressure at wide tube service valve
psig (MPaG)
(1) Low pressure performance chart
HH fan
)
(30°C
p. 86°F
air tem
Indoor
7°C)
80°F (2
)
(24°C
75°F
160
(1.1)
146
(1.0)
132
(0.9) 77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
578
(4.0)
506
(3.5)
434
(3.0)
362
(2.5)
104
(40)
23
(-5)
(2) Operating current performance chart
)
°C
(23
°F C)
3
7
°
p.
(21
tem 0°F 7°C)
7
air
1
(
r
°F
oo
63
Ind
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(2) Operating current performance chart
10
Lo fan
Hi fan
HH fan
9
5
door
In
)
0°C
F (3
. 86°
mp
air te
Operating current (A)
Operating current (A)
6
C)
(27°
80°F
)
C
°
(24
75°F
4
)
°C
(23 )
°F
C
3
°
7
(21
p.
tem 70°F
air
)
r
°C
oo
Ind
(17
°F
3
6
8
7
6
5
4
3
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
3
104
(40)
(3) Indoor discharge air performance chart
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(3) Indoor discharge air performance chart
Hi fan
HH fan
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
140(60)
Lo fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
ir temp.
Indoor a
0°C)
86°F (3
7°C)
80°F (2
53.6(12)
50.0(10)
46.4( 8)
77
(25)
4°C
75°F (2
)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
131(55)
113(45)
Ind
104(40)
95(35)
86(30)
77(25)
23
(-5)
104
(40)
)
°C
23
F ( °C)
°
73 (21
p.
F
C)
tem 70° (17°
r
i
a
F
r
°
oo
63
122(50)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
28
Indoor Unit KMHS1872 × 1
Outdoor Unit CMH2472
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
(1) High pressure performance chart
High pressure at wide tube service valve
psig (MPaG)
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
Low pressure at wide tube service valve
psig (MPaG)
Cooling Characteristics
HH fan
174
(1.2)
Lo fan
Hi fan
. 86°
or
Indo
160
(1.1)
F
mp
air te
80°F
75°F
)
(30°C
C)
(27°
C)
(24°
146
(1.0)
132
(0.9) 77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
578
(4.0)
506
(3.5)
434
(3.0)
362
(2.5) 23
(-5)
104
(40)
(2) Operating current performance chart
)
°C
(23
°F
3
7
p.
)
°C
tem
(21 )
air
r
F
o
°
C
o
70 (17°
Ind
F
63°
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(2) Operating current performance chart
8
Lo fan
Hi fan
HH fan
Operating current (A)
Operating current (A)
12
7
6
6°F
p. 8
tem
air
oor
Ind
°C)
(30
C)
7°
F (2
80°
11
°C)
(23
3°F
7
.
C)
mp
21°
ir te
F(
or a
70°
o
)
d
In
7°C
F (1
63°
10
9
8
C)
24°
F(
75°
5
77
(25)
7
86
95
(30)
(35)
Outdoor air temperature °F (°C)
6
104
(40)
(3) Indoor discharge air performance chart
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(3) Indoor discharge air performance chart
Hi fan
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
140(60)
Lo fan
HH fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
0°C)
mp. 86°F (3
Indoor air te
)
80°F (27°C
53.6(12)
C)
75°F (24°
50.0(10)
46.4( 8)
77
(25)
131(55)
122(50)
C)
(23°
3°F
7
.
C)
mp
(21°
ir te
0°F
or a
7
o
d
C)
In
(17°
63°F
113(45)
104(40)
95(35)
86(30)
77(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
104
(40)
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
29
Indoor Unit KMHS2472 × 1
Outdoor Unit CMH2472
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
(1) High pressure performance chart
174
(1.2)
Lo fan
Hi fan
Indoor
160
(1.1)
High pressure at wide tube service valve
psig (MPaG)
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
Low pressure at wide tube service valve
psig (MPaG)
Cooling Characteristics
HH fan
°C)
°F (30
mp. 86
air te
7°C)
80°F (2
)
(24°C
75°F
146
(1.0)
132
(0.9) 77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
506
(3.5)
p.
434
(3.0)
ir
ra
oo
Ind
362
(2.5) 23
(-5)
104
(40)
(2) Operating current performance chart
32
(0)
tem
°F
73
)
°C
(23
C)
21°
F(
70°
°C)
(17
F
°
63
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(2) Operating current performance chart
9
HH fan
Lo fan
Hi fan
C)
30°
6
p. 8
(
°F
14
tem
air
)
oor
Ind (27°C
F
80°
C)
24°
F(
°
5
7
8
7
Operating current (A)
Operating current (A)
578
(4.0)
13
12
11
10
9
6
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
8
104
(40)
(3) Indoor discharge air performance chart
23
(-5)
C)
23°
F(
°
3
.7
p
I
or
ndo
air
tem
)
1°C
F (2
70°
)
7°C
F (1
63°
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(3) Indoor discharge air performance chart
Hi fan
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
140(60)
Lo fan
HH fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
46.4( 8)
77
(25)
0°C)
3
6°F (
mp. 8
ir te
oor a
Ind
80
°C)
°F (27
°C)
F (24
75°
86
95
(30)
(35)
Outdoor air temperature °F (°C)
104
(40)
131(55)
122(50)
113(45)
te
°C)
1
F (2
)
70°
7°C
F (1
63°
oor
Ind
104(40)
95(35)
°C)
(23
°F
3
7
.
mp
air
86(30)
77(25)
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
30
5-1-3. Temperature Charts (CMH3172)
Indoor Unit KMHS0772 × 1
Outdoor Unit CMH3172
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
(1) High pressure performance chart
174
(1.2)
Lo fan
146
(1.0)
Hi fan
HH fan
0°C)
mp. 86°F (3
Indoor air te
118
(0.8)
90
(0.6) 77
(25)
Hi fan
High pressure at wide tube service valve
psig (MPaG)
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
Low pressure at wide tube service valve
psig (MPaG)
Cooling Characteristics
)
80°F (27°C
75°F (24°C)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
506
(3.5)
434
(3.0)
(2) Operating current performance chart
Ind
362
(2.5)
290
(2.0)
218
(1.5) 23
(-5)
104
(40)
C)
3°
(2
C)
1°
7
(2
p.
F
°
m
C)
e
70 (17°
ir t
F
ra
°
o
o
63
F
3°
32
(0)
77
(25)
(2) Operating current performance chart
9
5
Lo fan
Hi fan
Hi fan
HH fan
C)
3°
(2
F
°
73
C)
p. 21°
em °F (
t
r
i
70 )
ra
C
oo
7°
(1
Ind
F
°
63
4
Ind
oo
r
Operating current (A)
8
Operating current (A)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
)
°C
)
(27
°C
°F 4°C)
30
(
0
8
(2
°F
°F
86
75
p.
em
t
r
ai
7
6
5
3
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
4
104
(40)
(3) Indoor discharge air performance chart
23
(-5)
32
(0)
Hi fan
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
Hi fan
HH fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
(30°C)
temp. 86°F
Indoor air
C)
80°F (27°
75°F (24°C)
50.0(10)
46.4( 8)
77
(25)
77
(25)
(3) Indoor discharge air performance chart
140(60)
Lo fan
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
)
°C
(23
)
°C
p.
21
tem 0°F (
air
7
r
C)
oo
17°
Ind
F(
°
3
6
°F
73
131(55)
122(50)
113(45)
104(40)
95(35)
86(30)
77(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
104
(40)
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
31
Indoor Unit KMHS0972 × 1
Outdoor Unit CMH3172
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
(1) High pressure performance chart
174
(1.2)
Lo fan
146
(1.0)
Hi fan
HH fan
temp. 86°F
Indoor air
)
C
7°
80°F (2
C)
75°F (24°
118
(0.8)
90
(0.6) 77
(25)
Hi fan
High pressure at wide tube service valve
psig (MPaG)
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
Low pressure at wide tube service valve
psig (MPaG)
Cooling Characteristics
(30°C)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
506
(3.5)
434
(3.0)
362
(2.5)
290
(2.0)
218
(1.5) 23
(-5)
104
(40)
(2) Operating current performance chart
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
8
Hi fan
Hi fan
)
p.
4
77
(25)
°C
(30
em
ir t
)
°C
(27 )
°F 24°C
0
8
(
°F
75
ra
oo
Ind
°F
86
C)
3°
(2
F
)
°
73 21°C )
(
p.
C
m
F
7°
te 70°
(1
air
F
°
r
3
o
6
do
HH fan
Operating current (A)
Lo fan
Operating current (A)
32
(0)
(2) Operating current performance chart
5
3
C)
3°
(2
C)
7
1°
p.
(2
em
F
t
°
C)
7°
70
air
(1
or
F
o
°
d
63
In
F
3°
86
95
(30)
(35)
Outdoor air temperature °F (°C)
7
In
6
5
4
104
(40)
(3) Indoor discharge air performance chart
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(3) Indoor discharge air performance chart
Hi fan
Hi fan
HH fan
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
140(60)
Lo fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
temp.
Indoor air
C)
86°F (30°
C)
53.6(12)
80°F (27°
C)
75°F (24°
50.0(10)
46.4( 8)
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
104
(40)
)
°C
(23
°F
3
7
)
p.
°C
tem
(21 )
air
°F
C
0
r
°
7
oo
(17
Ind
°F
63
131(55)
122(50)
113(45)
104(40)
95(35)
86(30)
77(25)
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
32
Indoor Unit KMHS1272 × 1
Outdoor Unit CMH3172
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
(1) High pressure performance chart
174
(1.2)
Lo fan
Hi fan
Hi fan
High pressure at wide tube service valve
psig (MPaG)
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
HH fan
146
(1.0)
mp.
Indoor air te
)
80°F (27°C
C)
75°F (24°
118
(0.8)
90
(0.6) 77
(25)
86°F (30°C)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
506
(3.5)
434
(3.0)
362
(2.5)
290
(2.0)
218
(1.5) 23
(-5)
104
(40)
(2) Operating current performance chart
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(2) Operating current performance chart
13
6
12
4
°F
73
)
C
1°
(2
)
C
3°
(2
p.
rt
11
10
em
r
oo
ai
70
d
In
°F
7°
C
)
)
C)
7°C )
F (2
80° (24°C
F
75°
30°
°F (
ir te
or a
Indo
86
mp.
HH fan
(1
5
Hi fan
°F
Hi fan
Operating current (A)
Lo fan
Operating current (A)
)
°C
23
F(
°
73
p.
)
tem 1°C
r
i
2
(
a
r
F
oo 70°
)
Ind
°C
(17
F
°
63
63
Low pressure at wide tube service valve
psig (MPaG)
Cooling Characteristics
9
8
3
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
7
104
(40)
(3) Indoor discharge air performance chart
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
(3) Indoor discharge air performance chart
Hi fan
Hi fan
HH fan
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
140(60)
Lo fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
0°C)
mp. 86°F (3
Indoor air te
80°F (27°C)
75°F (24°C)
50.0(10)
46.4( 8)
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
77
(25)
104
(40)
mp
ir te
131(55)
122(50)
C)
23°
F(
°
3
.7
In
ra
doo
C)
21°
F(
70°
C)
17°
F(
63°
113(45)
104(40)
95(35)
86(30)
77(25)
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
33
Outdoor Unit CMH3172
Indoor Unit KMHS1872 × 1
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
(1) High pressure performance chart
Hi fan
146
(1.0)
°F (30°C)
r air temp. 86
Indoo
118
(0.8)
80°F (27°C)
75°F (24°C)
90
(0.6) 77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
506
(3.5)
434
(3.0)
°C)
(23
°F
3
7
.
mp
ir te
or a
°C)
o
1
d
2
In
F(
70°
C)
17°
F(
63°
362
(2.5)
290
(2.0)
218
(1.5) 23
(-5)
104
(40)
(2) Operating current performance chart
32
(0)
Lo fan
Hi fan
14
6
do
13
In
Operating current (A)
Operating current (A)
°C)
(30
6°F
8
.
mp °C)
7
ir te
or a 0°F (2 C)
o
d
8
In
24°
(
F
75°
7
77
(25)
(2) Operating current performance chart
9
8
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
or
air
t
70 emp
63
°
.7
°F
F
(
21 3°F
(1
7°
°C
(2
C)
)
3°
C)
Lo fan
174
(1.2)
High pressure at wide tube service valve
psig (MPaG)
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
Low pressure at wide tube service valve
psig (MPaG)
Cooling Characteristics
12
5
4
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
11
104
(40)
23
(-5)
(3) Indoor discharge air performance chart
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
Hi fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
46.4( 8)
77
(25)
(30°C)
temp. 86°F
Indoor air
80°F (27°C)
)
75°F (24°C
86
95
(30)
(35)
Outdoor air temperature °F (°C)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(3) Indoor discharge air performance chart
140(60)
Lo fan
32
(0)
104
(40)
131(55)
122(50)
113(45)
C)
23°
°F (
3
7
p.
tem
air
oor
)
C
Ind
21°
F(
70°
)
7°C
F (1
63°
104(40)
95(35)
86(30)
77(25)
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
34
Outdoor Unit CMH3172
Indoor Unit KMHS2472 × 1
(RH : 85%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
(1) High pressure performance chart
Lo fan
174
(1.2)
High pressure at wide tube service valve
psig (MPaG)
Heating Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
Low pressure at wide tube service valve
psig (MPaG)
Cooling Characteristics
Hi fan
146
(1.0)
118
(0.8)
90
(0.6) 77
(25)
Indoor air temp.
80°F (27°C)
86°F (30°C)
75°F (24°C)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
506
(3.5)
434
(3.0)
°C)
(23
°F
3
7
.
mp
ir te
)
ra
o
1°C
o
2
(
F
Ind
)
70°
C
7°
F (1
63°
362
(2.5)
290
(2.0)
218
(1.5) 23
(-5)
104
(40)
(2) Operating current performance chart
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(2) Operating current performance chart
9
8
77
(25)
86
95
(30)
(35)
Outdoor air temperature °F (°C)
23
(-5)
(3) Indoor discharge air performance chart
63
air
12
11
104
(40)
or
13
do
10
14
In
°F
86
p.
em
t
r
i
ra
)
oo
°C
Ind
27
(
°F
C)
0
°
8
(24
°F
75
11
Hi fan
)
°C
(30
Operating current (A)
Operating current (A)
Lo fan
te
m
p
70 . 7
3°
°
F
°F
(2 F (2
(1
1°
7°
C) 3°C
C)
)
12
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
(3) Indoor discharge air performance chart
Hi fan
Indoor discharge air temperature °F (°C)
Indoor discharge air temperature °F (°C)
140(60)
Lo fan
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
46.4( 8)
77
(25)
Indoor air
temp. 86°F
(30°C)
80°F (27°
C)
)
75°F (24°C
86
95
(30)
(35)
Outdoor air temperature °F (°C)
104
(40)
131(55)
122(50)
113(45)
°C)
(23
3°F
7
.
p
tem
air
)
oor
1°C
2
(
Ind
F
)
70°
C
°
7
F (1
63°
104(40)
95(35)
86(30)
77(25)
23
(-5)
32
(0)
41
50
59
68
(5)
(10)
(15)
(20)
Outdoor air temperature °F (°C)
77
(25)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
35
5-2. Cooling Capacity
Outdoor Unit : CMH1972
Indoor Unit
: KMHS0972 × 3
Power Supply : 230V Single Phase 60Hz
< Cooling Capacity >
RATING CAPACITY:
INDOOR
ENT. TEMP. °F (°C)
W.B.
D.B.
59
(15.0)
63
(17.2)
67
(19.4)
71
(21.7)
75
(23.9)
19,100 BTU/h
TC
65
(18.3)
19,180
AIR FLOW RATE:
OUTDOOR
AMBIENT TEMP. °F (°C)
75
85
95
(23.9)
(29.4)
(35.0)
18,500
17,770
17,210
883 CFM
105
(40.6)
16,350
115
(46.1)
15,440
72
76
80
84
88
(22.2)
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
SHC
TC
17,130
19,180
19,180
19,180
19,180
20,150
16,960
18,500
18,500
18,500
18,500
19,450
16,610
17,770
17,770
17,770
17,770
18,700
16,270
17,210
17,210
17,210
17,210
18,140
15,930
16,350
16,350
16,350
16,350
17,250
15,440
15,440
15,440
15,440
15,440
16,290
72
76
80
84
88
(22.2)
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
SHC
TC
14,040
16,960
20,040
20,150
20,150
21,140
13,700
16,610
19,450
19,450
19,450
20,420
13,360
16,270
18,700
18,700
18,700
19,640
13,190
16,100
18,140
18,140
18,140
# 19,100
12,840
15,760
17,250
17,250
17,250
18,180
12,330
15,410
16,290
16,290
16,290
17,180
72
76
80
84
88
(22.2)
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
SHC
TC
10,610
13,700
16,790
19,700
21,140
22,130
10,440
13,360
16,440
19,530
20,420
21,400
10,100
13,010
16,270
19,190
19,640
20,600
9,930
12,840
15,930
19,010
19,100
20,080
9,590
12,500
15,760
18,180
18,180
19,130
9,240
12,160
15,240
17,180
17,180
18,100
72
76
80
84
88
(22.2)
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
SHC
TC
7,190
10,100
13,360
16,270
19,190
23,020
7,010
9,930
13,010
16,100
19,010
22,270
6,670
9,590
12,840
15,760
18,670
21,450
6,500
9,410
12,670
15,590
18,500
20,980
6,160
9,240
12,330
15,240
18,330
20,000
5,810
8,900
11,990
14,900
17,990
18,930
76
80
84
88
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
6,840
9,930
12,840
15,930
6,670
9,760
12,670
15,590
6,330
9,410
12,500
15,410
6,160
9,240
12,330
15,240
5,980
9,070
11,990
14,900
5,640
8,730
11,640
14,730
TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)
NOTE
1. Rating conditions (#) : Indoor Unit Entering Air Temp. 80 °F (26.7 °C) D.B. / 67 °F (19.4 °C) W.B.
: Outdoor Ambient Temp. 95 °F (35 °C) D.B.
2. Above data does not take Freeze Prevention Protection during cooling operation into account.
For this reason, the value may vary from the actual cooling characteristics.
3. Above data represents the value when the operation frequency of a compressor is fixed.
36
Outdoor Unit : CMH2472
Indoor Unit
: KMHS0972 × 3
Power Supply : 230V Single Phase 60Hz
< Cooling Capacity >
RATING CAPACITY:
INDOOR
ENT. TEMP. °F (°C)
W.B.
D.B.
59
(15.0)
63
(17.2)
67
(19.4)
71
(21.7)
75
(23.9)
23,200 BTU/h
TC
65
(18.3)
23,420
AIR FLOW RATE:
OUTDOOR
AMBIENT TEMP. °F (°C)
75
85
95
(23.9)
(29.4)
(35.0)
22,600
21,710
21,090
883 CFM
105
(40.6)
20,040
115
(46.1)
15,560
72
76
80
84
88
(22.2)
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
SHC
TC
19,190
22,100
23,420
23,420
23,420
24,490
18,840
21,760
22,600
22,600
22,600
23,650
18,330
21,410
21,710
21,710
21,710
22,730
18,160
21,070
21,090
21,090
21,090
22,140
17,640
20,040
20,040
20,040
20,040
21,050
15,560
15,560
15,560
15,560
15,560
15,980
72
76
80
84
88
(22.2)
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
SHC
TC
15,760
18,840
21,930
24,490
24,490
25,560
15,410
18,330
21,590
23,650
23,650
24,700
15,070
17,990
21,070
22,730
22,730
23,760
14,730
17,810
20,900
22,140
22,140
# 23,200
14,390
17,300
20,390
21,050
21,050
22,080
12,330
15,240
15,980
15,980
15,980
16,380
72
76
80
84
88
(22.2)
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
SHC
TC
12,330
15,410
18,500
21,410
24,500
26,610
11,990
15,070
18,160
21,070
24,160
25,730
11,640
14,730
17,810
20,730
23,640
24,770
11,470
14,390
17,470
20,560
23,200
24,270
10,960
14,040
17,130
20,040
22,080
22,840
8,900
11,990
15,070
16,380
16,380
16,730
72
76
80
84
88
(22.2)
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
SHC
TC
8,730
11,810
14,900
17,810
20,900
27,510
8,390
11,470
14,560
17,470
20,560
26,620
8,040
11,130
14,210
17,130
20,210
25,640
7,870
10,960
14,040
16,960
20,040
25,210
7,360
10,440
13,530
16,440
19,530
23,240
5,470
8,390
11,470
14,560
16,730
17,000
76
80
84
88
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
8,210
11,300
14,390
17,300
7,870
11,130
14,040
16,960
7,700
10,790
13,700
16,790
7,530
10,610
13,530
16,610
6,840
9,930
13,010
15,930
4,960
8,210
11,130
14,040
TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)
NOTE
1. Rating conditions (#) : Indoor Unit Entering Air Temp. 80 °F (26.7 °C) D.B. / 67 °F (19.4 °C) W.B.
: Outdoor Ambient Temp. 95 °F (35 °C) D.B.
2. Above data does not take Freeze Prevention Protection during cooling operation into account.
For this reason, the value may vary from the actual cooling characteristics.
3. Above data represents the value when the operation frequency of a compressor is fixed.
37
Outdoor Unit : CMH3172
Indoor Unit
: KMHS0972 × 4
Power Supply : 230V Single Phase 60Hz
< Cooling Capacity >
RATING CAPACITY:
INDOOR
ENT. TEMP. °F (°C)
W.B.
D.B.
59
(15.0)
63
(17.2)
67
(19.4)
71
(21.7)
75
(23.9)
30,600 BTU/h
TC
65
(18.3)
31,170
AIR FLOW RATE:
OUTDOOR
AMBIENT TEMP. °F (°C)
75
85
95
(23.9)
(29.4)
(35.0)
30,000
28,730
28,010
1,177 CFM
105
(40.6)
22,960
115
(46.1)
16,690
72
76
80
84
88
(22.2)
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
SHC
TC
25,580
29,470
31,170
31,170
31,170
32,490
24,900
29,010
30,000
30,000
30,000
31,280
24,440
28,320
28,730
28,730
28,730
29,960
23,980
28,010
28,010
28,010
28,010
29,310
21,700
22,960
22,960
22,960
22,960
23,400
16,690
16,690
16,690
16,690
16,690
16,970
72
76
80
84
88
(22.2)
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
SHC
TC
21,010
24,900
29,010
32,490
32,490
33,790
20,550
24,440
28,550
31,280
31,280
32,540
19,870
23,980
28,100
29,960
29,960
31,170
19,640
23,520
27,640
29,310
29,310
# 30,600
17,120
21,240
23,400
23,400
23,400
23,770
14,610
16,970
16,970
16,970
16,970
17,200
72
76
80
84
88
(22.2)
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
SHC
TC
16,440
20,320
24,440
28,550
32,440
35,020
15,980
19,870
23,980
28,100
31,980
33,730
15,290
19,410
23,520
27,410
31,170
32,320
15,070
19,180
23,300
27,180
30,600
31,860
12,550
16,670
20,780
23,770
23,770
24,020
10,270
14,150
17,200
17,200
17,200
17,350
72
76
80
84
88
(22.2)
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
SHC
TC
11,410
15,520
19,640
23,520
27,640
36,040
10,950
15,070
19,180
23,070
27,180
34,730
10,490
14,610
18,720
22,610
26,720
33,270
10,490
14,380
18,500
22,610
26,500
32,940
7,750
11,640
15,980
19,870
23,750
24,130
5,690
9,580
13,690
17,350
17,350
17,390
76
80
84
88
(24.4)
(26.7)
(28.9)
(31.1)
SHC
SHC
SHC
SHC
10,720
14,840
18,950
22,840
10,270
14,610
18,500
22,380
9,810
14,150
18,040
21,920
9,810
13,920
17,810
21,920
7,070
11,180
15,290
19,180
5,240
9,350
13,240
17,350
TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)
NOTE
1. Rating conditions (#) : Indoor Unit Entering Air Temp. 80 °F (26.7 °C) D.B. / 67 °F (19.4 °C) W.B.
: Outdoor Ambient Temp. 95 °F (35 °C) D.B.
2. Above data does not take Freeze Prevention Protection during cooling operation into account.
For this reason, the value may vary from the actual cooling characteristics.
3. Above data represents the value when the operation frequency of a compressor is fixed.
38
5-3. Heating Capacity
Outdoor Unit : CMH1972
Indoor Unit
: KMHS0972 × 3
Power Supply : 230V Single Phase 60Hz
< Heating Capacity >
RATING CAPACITY:
OUTDOOR
ENT. TEMP. °F (°C)
W.B.
24,800 BTU/h
AIR FLOW RATE:
INDOOR
AMBIENT TEMP. °F (°C)
65
70
(18.3)
(21.1)
13,790
13,750
847 CFM
75
(23.9)
13,710
80
(26.7)
13,660
0 (-17.8)
TH
60
(15.6)
13,820
3 (-16.1)
TH
14,280
14,250
14,220
14,170
14,120
8 (-13.3)
TH
15,390
15,360
15,320
15,280
15,220
13 (-10.6)
TH
16,540
16,510
16,470
16,420
16,360
18 (-7.8)
TH
17,810
17,780
17,740
17,680
17,620
23 (-5.0)
TH
19,150
19,110
19,070
19,010
18,930
28 (-2.2)
TH
20,540
20,500
20,450
20,380
20,310
33 (0.6)
TH
21,980
21,940
21,880
21,810
21,730
38 (3.3)
TH
23,400
23,360
23,300
23,220
23,130
43 (6.1)
TH
24,920
24,870
# 24,800
24,720
24,620
48 (8.9)
TH
26,450
26,400
26,330
26,240
26,130
53 (11.7)
TH
28,000
27,940
27,870
27,770
27,660
58 (14.4)
TH
29,500
29,440
29,360
29,250
29,130
63 (17.2)
TH
31,050
30,980
30,890
30,780
30,660
65 (18.3)
TH
31,650
31,580
31,490
31,380
31,250
TH : Total Heating Capacity (BTU/h)
NOTE
1. Rating conditions (#) : Indoor Unit Entering Air Temp. 70 °F (21.1 °C) D.B.
: Outdoor Ambient Temp. 47 °F (8.3 °C) D.B. / 43 °F (6.1 °C) W.B.
2. Above data does not take Defrost Operation, Overload Prevention Protection, and/or Cold Air
Prevention Protection during heating operation into account. For this reason, the value may vary
from the actual heating characteristics.
3. Above data represents the value when the operation frequency of a compressor is fixed.
39
Outdoor Unit : CMH2472
Indoor Unit
: KMHS0972 × 3
Power Supply : 230V Single Phase 60Hz
< Heating Capacity >
RATING CAPACITY:
OUTDOOR
ENT. TEMP. °F (°C)
W.B.
29,200 BTU/h
AIR FLOW RATE:
INDOOR
AMBIENT TEMP. °F (°C)
65
70
(18.3)
(21.1)
16,540
16,510
847 CFM
75
(23.9)
16,470
80
(26.7)
16,420
0 (-17.8)
TH
60
(15.6)
16,550
3 (-16.1)
TH
17,100
17,080
17,050
17,010
16,960
8 (-13.3)
TH
18,390
18,370
18,340
18,300
18,250
13 (-10.6)
TH
19,730
19,710
19,680
19,640
19,580
18 (-7.8)
TH
21,200
21,180
21,150
21,100
21,040
23 (-5.0)
TH
22,740
22,720
22,680
22,630
22,570
28 (-2.2)
TH
24,330
24,310
24,270
24,220
24,150
33 (0.6)
TH
25,970
25,950
25,900
25,850
25,770
38 (3.3)
TH
27,580
27,560
27,510
27,450
27,100
43 (6.1)
TH
29,280
29,250
# 29,200
29,130
27,660
48 (8.9)
TH
30,990
30,950
30,900
30,830
28,150
53 (11.7)
TH
32,690
32,650
32,600
31,800
28,540
58 (14.4)
TH
34,320
34,280
34,220
32,140
28,820
63 (17.2)
TH
35,970
35,930
35,860
32,330
28,990
65 (18.3)
TH
36,600
36,560
36,110
32,370
29,010
TH : Total Heating Capacity (BTU/h)
NOTE
1. Rating conditions (#) : Indoor Unit Entering Air Temp. 70 °F (21.1 °C) D.B.
: Outdoor Ambient Temp. 47 °F (8.3 °C) D.B. / 43 °F (6.1 °C) W.B.
2. Above data does not take Defrost Operation, Overload Prevention Protection, and/or Cold Air
Prevention Protection during heating operation into account. For this reason, the value may vary
from the actual heating characteristics.
3. Above data represents the value when the operation frequency of a compressor is fixed.
40
Outdoor Unit : CMH3172
Indoor Unit
: KMHS0972 × 4
Power Supply : 230V Single Phase 60Hz
< Heating Capacity >
RATING CAPACITY:
OUTDOOR
ENT. TEMP. °F (°C)
W.B.
32,000 BTU/h
AIR FLOW RATE:
INDOOR
AMBIENT TEMP. °F (°C)
65
70
(18.3)
(21.1)
18,260
18,230
1,130 CFM
75
(23.9)
18,200
80
(26.7)
18,150
0 (-17.8)
TH
60
(15.6)
18,270
3 (-16.1)
TH
18,860
18,850
18,820
18,790
18,740
8 (-13.3)
TH
20,260
20,250
20,230
20,200
20,150
13 (-10.6)
TH
21,720
21,710
21,680
21,650
21,600
18 (-7.8)
TH
23,310
23,300
23,280
23,240
23,190
23 (-5.0)
TH
24,970
24,960
24,940
24,910
24,850
28 (-2.2)
TH
26,690
26,690
26,660
26,630
26,570
33 (0.6)
TH
28,460
28,450
28,430
28,400
28,340
38 (3.3)
TH
30,190
30,190
30,170
30,140
30,080
43 (6.1)
TH
32,020
32,020
# 32,000
31,960
31,900
48 (8.9)
TH
33,850
33,850
33,840
33,800
33,740
53 (11.7)
TH
35,680
35,680
35,670
35,630
35,570
58 (14.4)
TH
37,420
37,430
37,420
37,380
37,320
63 (17.2)
TH
39,190
39,200
39,190
39,160
39,100
65 (18.3)
TH
39,870
39,880
39,880
39,850
39,790
TH : Total Heating Capacity (BTU/h)
NOTE
1. Rating conditions (#) : Indoor Unit Entering Air Temp. 70 °F (21.1 °C) D.B.
: Outdoor Ambient Temp. 47 °F (8.3 °C) D.B. / 43 °F (6.1 °C) W.B.
2. Above data does not take Defrost Operation, Overload Prevention Protection, and/or Cold Air
Prevention Protection during heating operation into account. For this reason, the value may vary
from the actual heating characteristics.
3. Above data represents the value when the operation frequency of a compressor is fixed.
41
1 2 3
1 2 3
CM
1 1
2 2
WHT
C/W
OVERLOAD
RELAY(OLR)
COMPRESSOR
MOTOR
S/U
(3P)CONNECTOR
COMPRESSOR
THERMISTOR
BLK
BLK
RED (PNK)
WHT
BLU
RED (PNK)
WHT
BLU
R/V
FERRITE
CORE
1 2 3 4
1 2 3 4
COIL/OUTDOOR
V
W
W
W
FM
1 2 3 4 5 6 7
U
W
FAN MOTOR
FM
1 2 3 4 5 6 7
1 2 3 4 5 6 7
2 1
2 1
W
W
2 1
2 1
W
W
RV1 RV0
1 1
(1P)
WHT
CONNECTOR
(2P)CONNECTOR
1 1
WHT
WHT
2 2
WHT
RED
(2P)CONNECTOR
1 1
2 2
BLK
MV2
1 2 3 4 5
1 2 3 4 5
MV2
1 2 3 4 5
1 2 3 4 5
MAGNETIC COIL
EXPANSION BOARD
C-TH
1 2 3 4
1 2 3 4
WHT
WHT
W
SI-C
SICOM2
W
1 2 3 4
1 2 3 4
CN01
1 2 3 4 5 6
1 2 3 4 5 6
CN02
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
CN03
W
KS10
1 2 3 4
SICOM2
W
W
2 1
2 1
REACTANCE
W
MV0
BRN
MAGNETIC COIL MAGNETIC COIL
MV1
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
25A
E1
MV0
1 2 3 4 5
1 2 3 4 5
W
L1
W
L2
MV1
1 2 3 4 5
1 2 3 4 5
HEATER1 HEATER0
CRANKCASE
HEATER
KS22
1 2 3 4 5 6
CONTROLLER
DEF1 DEF0
BLK
KS23
1 2 3 4 5 6 7 8
1 2 3 4
1 2 3 4
B-TH
AW THERMISTOR
YEL
YEL
YEL
YEL
AN THERMISTOR
1 2 3 4
1 2 3 4
A-TH
(2P)CONNECTOR
RV
WHT
DEF
(2P)CONNECTOR
BLK
WHT
RED
BLU
BLK
WHT
RED
BLU
COMP
RED
RED
RED
RED
BLK
BLK
COIL
THERMISTOR
YEL
YEL
BLK
BLK
OUTDOOR
THERMISTOR
HIGH PRESSURE
SWITCH
WHT
RED
RED
BLK
BLK
BLK
WHT
RED
BLU
BLK
WHT
BW THERMISTOR
YEL
YEL
YEL
YEL
BN THERMISTOR
BLU
BLU
BRN
BRN
WHT
WHT
ORG
ORG
(7P)CONNECTOR
WHT
BLK
BLK
42
CW THERMISTOR
YEL
YEL
YEL
YEL
CN THERMISTOR
W
GRN/YEL
W
W
W
SI-A
SI-B
ACIN2
W
E ACIN1
WHT
4
1
2
GND
1
WHT
9
8
7
6
5
BLK
4
WHT
3
2
1
BLK
BLK
TERMINAL PLATE
WHT
RELAY
BLK
BLK
TERMINAL PLATE
FERRITE
CORE
5
6
BLK
GND
WARNING
ORG
RED
YEL
BLK
GRY
WHT
ORG
RED
YEL
BLK
GRY
WHT
BLK
WHT
RED
BLU
GRN/YEL
ORG
RED
YEL
BLK
GRY
WHT
WHT
(2P)CONNECTOR
WHT
WHT
WHT
WHT
WHT
WHT
1 1
(1P)CONNECTOR
BLU
L1
L2
4WAY
VALVE COIL
RED
POWER
SUPPLY
C INDDOR B INDDOR A INDDOR
UNIT
UNIT
UNIT
TO INDDOR UNIT
DEFROST
VALVE COIL
6. ELECTRICAL DATA
6-1. Electric Wiring Diagrams
Outdoor Unit CMH1972
To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.
8FA2-5257-59100-1
BLK
COMPRESSOR
THERMISTOR
BLK
BLK
1 2 3
1 2 3
CM
1 1
2 2
WHT
C/W
OVERLOAD
RELAY(OLR)
COMPRESSOR
MOTOR
S/U
(3P)CONNECTOR
V
W
W
W
FM
1 2 3 4 5 6 7
U
W
COMP
FAN MOTOR
FM
1 2 3 4 5 6 7
1 2 3 4 5 6 7
RED
RED
RED (PNK)
WHT
BLU
RED (PNK)
WHT
BLU
R/V
FERRITE
CORE
1 2 3 4
1 2 3 4
COIL/OUTDOOR
BLK
BLK
W
W
BLK
W
W
1 2 3 4 5
1 2 3 4 5
MV2
1 2 3 4 5
1 2 3 4 5
MV3
MV2
1 2 3 4 5
1 2 3 4 5
MV3
1 2 3 4 5
1 2 3 4 5
1 2 3 4
1 2 3 4
CN01
SI-C
W
SI-D
W
SICOM2
W
W
SICOM2
KS10
1 2 3 4
W
W
WHT
2 1
2 1
REACTANCE
W
MV0
GRY
BRN
MAGNETIC COIL MAGNETIC COIL
MV1
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
25A
E1
MV0
1 2 3 4 5
1 2 3 4 5
W
L1
W
L2
MV1
1 2 3 4 5
1 2 3 4 5
HEATER1 HEATER0
CRANKCASE
HEATER
MAGNETIC COIL MAGNETIC COIL
BLK
(2P)CONNECTOR
WHT
1 1
2 2
(2P)CONNECTOR
1 1
WHT
WHT
2 2
WHT
WHT
RED
C-TH
1 2 3 4
1 2 3 4
D-TH
1 2 3 4
1 2 3 4
EXPANSION BOARD
1 2 3 4 5 6
1 2 3 4 5 6
CN02
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
CN03
2 1
2 1
RV1 RV0
(2P)CONNECTOR
CONTROLLER
DEF1 DEF0
KS22
1 2 3 4 5 6
1 2 3 4
1 2 3 4
B-TH
KS23
1 2 3 4 5 6 7 8
1 2 3 4
1 2 3 4
A-TH
2 1
2 1
1 1
(1P)
WHT
CONNECTOR
WHT
1 1
(1P)CONNECTOR
WHT
RV
RED
RED
BLK
BLK
COIL
THERMISTOR
YEL
YEL
BLK
BLK
OUTDOOR
THERMISTOR
HIGH PRESSURE
SWITCH
AW THERMISTOR
YEL
YEL
YEL
YEL
AN THERMISTOR
BLU
BLU
BRN
BRN
WHT
WHT
ORG
ORG
(7P)CONNECTOR
WHT
BW THERMISTOR
YEL
YEL
YEL
YEL
BN THERMISTOR
DW THERMISTOR
YEL
YEL
YEL
YEL
DN THERMISTOR
WHT
BLK
WHT
RED
BLU
(2P)CONNECTOR
BLK
WHT
RED
BLU
BLK
WHT
RED
BLU
WHT
RED
RED
BLK
BLK
BLK
WHT
RED
BLU
BLK
WHT
CW THERMISTOR
YEL
YEL
YEL
YEL
CN THERMISTOR
43
ORG
RED
YEL
BLK
GRY
W
GRN/YEL
W
W
W
SI-A
SI-B
ACIN2
W
E ACIN1
WHT
4
1
2
GND
1
WHT
WHT
12
11
10
9
8
7
6
5
BLK
4
WHT
3
2
1
BLK
BLK
TERMINAL PLATE
FERRITE
CORE
WHT
RELAY
BLK
BLK
TERMINAL PLATE
5
6
BLK
GND
WARNING
ORG
RED
YEL
BLK
GRY
(2P)CONNECTOR
WHT
WHT
WHT
WHT
WHT
ORG
RED
YEL
BLK
GRY
WHT
WHT
GRN/YEL
ORG
RED
YEL
BLK
GRY
DEF
BLU
L1
L2
4WAY
VALVE COIL
RED
POWER
SUPPLY
D INDDOR C INDDOR B INDDOR A INDDOR
UNIT
UNIT
UNIT
UNIT
TO INDDOR UNIT
DEFROST
VALVE COIL
Outdoor Unit CMH2472
To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.
8FA2-5257-59300-1
BLK
COMPRESSOR
THERMISTOR
BLK
BLK
1 2 3
1 2 3
CM
1 1
2 2
WHT
C/W
OVERLOAD
RELAY(OLR)
COMPRESSOR
MOTOR
S/U
(3P)CONNECTOR
V
W
W
W
FM
1 2 3 4 5 6 7
U
W
COMP
FAN MOTOR
FM
1 2 3 4 5 6 7
1 2 3 4 5 6 7
RED
RED
RED (PNK)
WHT
BLU
RED (PNK)
WHT
BLU
R/V
FERRITE
CORE
1 2 3 4
1 2 3 4
COIL/OUTDOOR
BLK
BLK
W
W
BLK
W
W
1 1
(1P)
WHT
CONNECTOR
WHT
1 1
(1P)CONNECTOR
1 2 3 4 5
1 2 3 4 5
MV2
1 2 3 4 5
1 2 3 4 5
MV3
MV2
1 2 3 4 5
1 2 3 4 5
MV3
1 2 3 4 5
1 2 3 4 5
1 2 3 4
1 2 3 4
CN01
SI-C
W
SI-D
W
SICOM2
W
W
SICOM2
KS10
1 2 3 4
W
W
2 1
2 1
REACTANCE
W
MV0
GRY
BRN
MAGNETIC COIL MAGNETIC COIL
MV1
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
25A
E1
MV0
1 2 3 4 5
1 2 3 4 5
W
L1
W
L2
MV1
1 2 3 4 5
1 2 3 4 5
HEATER1 HEATER0
CRANKCASE
HEATER
MAGNETIC COIL MAGNETIC COIL
BLK
(2P)CONNECTOR
WHT
1 1
2 2
(2P)CONNECTOR
1 1
WHT
WHT
2 2
WHT
WHT
RED
C-TH
1 2 3 4
1 2 3 4
D-TH
1 2 3 4
1 2 3 4
EXPANSION BOARD
1 2 3 4 5 6
1 2 3 4 5 6
CN02
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
CN03
2 1
2 1
RV1 RV0
(2P)CONNECTOR
CONTROLLER
DEF1 DEF0
KS22
1 2 3 4 5 6
1 2 3 4
1 2 3 4
B-TH
KS23
1 2 3 4 5 6 7 8
1 2 3 4
1 2 3 4
A-TH
2 1
2 1
RV
WHT
DEF
RED
RED
BLK
BLK
COIL
THERMISTOR
YEL
YEL
BLK
BLK
OUTDOOR
THERMISTOR
HIGH PRESSURE
SWITCH
AW THERMISTOR
YEL
YEL
YEL
YEL
AN THERMISTOR
BLU
BLU
BRN
BRN
WHT
WHT
ORG
ORG
(7P)CONNECTOR
WHT
BW THERMISTOR
YEL
YEL
YEL
YEL
BN THERMISTOR
DW THERMISTOR
YEL
YEL
YEL
YEL
DN THERMISTOR
WHT
BLK
WHT
RED
BLU
(2P)CONNECTOR
BLK
WHT
RED
BLU
BLK
WHT
RED
BLU
WHT
RED
RED
BLK
BLK
BLK
WHT
RED
BLU
BLK
WHT
CW THERMISTOR
YEL
YEL
YEL
YEL
CN THERMISTOR
44
ORG
RED
YEL
BLK
GRY
W
W
W
W
SI-A
SI-B
ACIN2
W
E ACIN1
WHT
RELAY
4
1
GND
2
WHT
WHT
12
11
10
9
8
7
6
5
BLK
4
WHT
3
2
1
BLK
BLK
TERMINAL PLATE
WHT
1
BLK
BLK
TERMINAL PLATE
5
6
BLK
GND
WARNING
ORG
RED
YEL
BLK
GRY
WHT
ORG
RED
YEL
BLK
GRY
WHT
WHT
(2P)CONNECTOR
WHT
WHT
WHT
WHT
WHT
FERRITE
CORE
GRN/YEL
4WAY
VALVE COIL
RED
L1
L2
GRN/YEL
ORG
RED
YEL
BLK
GRY
POWER
SUPPLY
D INDDOR C INDDOR B INDDOR A INDDOR
UNIT
UNIT
UNIT
UNIT
TO INDDOR UNIT
DEFROST
VALVE COIL
Outdoor Unit CMH3172
To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.
8FA2-5257-89400-1
BLU
BLK
7. FUNCTIONS
7-1. Explanation of Functions
NOTE
The numerical values such as temperature, frequency, time and current in parentheses are an example
of CMH3172 and the values are different from the other models.
Control/conditions
INITIAL
Unit operation
Breaker is ON.
The ON/OFF operation
button on the remote
controller is pressed.
Explanation
Power is supplied to the indoor and outdoor unit
control circuits, however the unit remains stopped.
Positioning of the outdoor unit electric expansion
valve is performed.
If automatic operation mode has been selected
with the remote controller, operation begins in
HEAT, SENSOR DRY, or COOL mode
depending on the room temperature and
outdoor temperature at the time operation starts.
This applies in the case of automatic
HEAT/COOL operation.
Depending on the operational mode, refer to the HEAT, SENSOR DRY, or COOL item.
HEAT
The ON/OFF operation
button on the remote
controller is pressed.
Operation lamp illuminates.
Indoor fan is stopped to prevent cold air from
being emitted.
Outdoor unit begins operating after
forced-stop is canceled.
The unit is forced to stop for 3 minutes after
the power is turned ON, or 3 minutes after the
compressor stops, in order to protect the
compressor.
The frequency is increased at the rate of 1 Hz
every 0.5 seconds.
When the indoor coil temperature rises,
the compressor starts,
the outdoor fan starts,
and the indoor fan changes from "LL"
to the set fan speed.
Depending on the relationship between the
remote controller temperature setting and the
room temperature, the compressor may stop
temporarily (in other words, the thermostat
may turn OFF).
When the frequency reaches Hz,frequency
increases are stopped for a period of seconds.
(Refor to Table 2 "Freguency control".)
This is in order to stabilize the return of oil to the
compressor.
The frequency then increases.
If the indoor and outdoor temperatures are high,
the current peak cut-off activates, stopping any
increases in frequency.
The room temperature
has reached the desired
temperature.
The indoor temperature and the remote
controller temperature setting are
approximately equal.
The thermostat turns
OFF.
The indoor fan is stopped.
The indoor and outdoor
temperatures are high.
Operating frequency is stabilized in order to
maintain a comfortable environment.
The outdoor unit stops. (It does not stop if the
thermostat for another indoor unit is ON.)
Approximately 30 seconds after the
thermostat turns OFF, the indoor fan is
stopped.
In order to protect the compressor, the outdoor
unit will not operate for 3 minutes after the
thermostat turns OFF, even if the room
temperature drops below the desired
temperature.
The frequency is not increased, even if
there is a difference between the room
temperature and the desired temperature.
In some cases, the frequency may be
decreased.
45
The outdoor unit starts automatically after 3
minutes.
During these 3 minutes, a low-pressure
pressure balance is achieved, allowing the
compressor to start more easily.
The amount of heat pump exceeds the amount
of heat radiation from the room.
Therefore, there is no need to further increase
the compressor capacity, and the frequency is
stabilized or lowered.
Control/conditions
HEAT
The thermostat turns ON.
When defrost operation
begins, frost has formed
on the outdoor unit
(when the ambient air
temperature is low).
Unit operation
The indoor unit is stopped.
Explanation
The unit operated before, and the temperature of
the indoor heat exchanger is relatively warm.
Therefore,the fan speed may start at the set fan
speed at the same time that the thermostat turns
ON.
Defrost operation begins based on outdoor
heat exchanger temperature and outdoor
air temperature conditions.
Non-stop defrost
Indoor fan : Stopped
Outdoor fan : Stopped
Compressor : 80 Hz
Solenoid valve (for hot gas bypass): ON
4-way valve : Remains ON
Operation lamp : Red and orange ON
alternately
Non-stop defrost (Refer to Fig. 1)
1. After HEAT operation begins, the temperature
of the outdoor heat exchanger is at or below the
L1 line for 35 minutes.
(If outdoor air temperature is less than 26.6 °F,
the time is 48 minutes)
2. After HEAT operation begins, the temperature
of the outdoor heat exchanger is at or below the
L2 line for 120 minutes.
The 4-way valve remains ON during defrost.
The outdoor fan stops and the solenoid
valve turns ON, allowing the refrigerant to
bypass the indoor unit.
The operating frequency during defrost is
80 Hz. (Frequency is lowered if the current
peak cut-off function is activated.)
The maximum length of a single defrost
operation is 12 minutes.
For the outdoor heat exchanger temperature
conditions for ending defrost, refer to Table 1.
Defrost release
Indoor fan turns ON.
After 10 seconds, the solenoid valve
(for hot gas bypass) turns OFF.
When the cold air feel has disappeared,
the indoor fan starts and gradually increases
speed until it reaches the set speed.
STOP
[Clean defrost]
Defrost is performed
when the outdoor unit is
stopped, and the
temperature of the
outdoor unit coil is at or
below the L1 line.
(Refer to Fig. 1.)
All indicator lamps turn OFF. The indoor and
outdoor units stop.
Operation is restarted
within 4 hours (only when
AUTO mode is selected
with the remote
controller).
Starts operating in the same operating mode
(HEAT) and with the same temperature
settings as before operation was stopped.
Operation starts after 4
hours or more have
passed.
New operation begins based on the
temperature conditions at the time the
ON/OFF button is pressed.
46
Within 4 hours after operation was stopped, it is
assumed that there has been no significant
change in the indoor and outdoor temperatures,
and the previous conditions (HEAT) are stored.
Outdoor heat
exchanger temperature (°F)
Temperature of releasing
Defrost operation time
(- 4)
Outdoor air
temperature (°F)
0
(21.2)
(19.4)
L2
L1
Heat exchanger
temperature for
releasing defrosting
The ON/OFF operation
button on the remote
controller is pressed.
No releasing
57.2 °F or higher (*1)
Table 1
Fig. 1
COOL
2 minutes or more
*1 The temperature for releasing of defrosting is (68 °F) or higher when the
outdoor air temperature is less than 32 °F.
(-11.2)
(-13.0)
Control/conditions
Less than 2 minutes
Unit operation
The operation lamp illuminates.
The indoor fan operates at the set fan speed.
The outdoor unit stops.
Explanation
The outdoor unit does not operate for 3 minutes
even after the breaker is turned ON.
The frequency is increased at the rate of 0.5
Hz every 1 seconds.
The outdoor unit starts.
(Compressor and the outdoor fan start.)
The room temperature
has reached the
desired temperature.
When the frequency reaches Hz,
frequency increases are stopped for a period
of seconds. (Refer to Table 2.)
This is in order to stabilize the return of oil to the
compressor.
The frequency then increases.
If the indoor and outdoor temperatures are high,
the current peak cut-off activates, stopping
any increases in frequency.
The indoor temperature and the desired
temperature are approximately equal.
Operating frequency is stabilized in order to
maintain a comfortable environment.
The thermostat turns
OFF.
The thermostat turns
ON again.
Freeze prevention
The outdoor unit stops. (It does not stop if the
thermostart for another indoor unit is ON.)
After the thermostat turns ON again, the
outdoor unit will not operate for 3 minutes,
even if the room temperature increases
above the desired temperature.
When the temperature of the indoor heat
exchanger drops to approximately 35.6 °F
or below, the compressor turns OFF, the
outdoor fan turns OFF, and the indoor fan
continues operating with no changes.
After 3 minutes, the outdoor unit begins operating
automatically.
During these 3 minutes, a pressure balance is
achieved, allowing the compressor to start
more easily.
In order to protect against freezing, the
compressor stops temporarily, until the
temperature of the indoor heat exchanger has
risen.
Approximately 3 minutes later, if the
temperature of the indoor heat exchanger
is adove 46.4 °F, the system returns to its
original conditions.
Stop
All indicator lamps turn OFF. The indoor and
outdoor units stop.
Operation is restarted
within 4 hours (only when
AUTO mode is selected
with the remote
controller).
Starts operating in the same operating mode
(COOL) and with the same temperature
settings as before operation was stopped.
Operation starts after 4
hours or more have
passed.
New operating mode is determined based on
the temperature conditions at the time the
ON/OFF operation button is pressed.
47
Within 4 hours after operation was stopped, it is
assumed that there has been no significant
change in the indoor and outdoor temperatures,
and the previous conditions (COOL) are stored.
Frequency control
(senconds)
(Hz)
Outdoor air temperature is below 32 °F.
Outdoor air temperature is 32 °F or higher.
(25) Hz
(120) seconds
(60) seconds
(35) Hz
(60) seconds
(30) seconds
(45) Hz
(60) seconds
(30) seconds
(55) Hz
(180) seconds
(90) seconds
Table 2
(1/f fluctuation fan)
Control/conditions
SENSOR The ON/OFF operation
button on the remote
DRY
controller is pressed.
Unit operation
The operation lamp illuminates.
The indoor fan operates at the set fan speed.
The outdoor unit stops.
Explanation
The outdoor unit does not operate for 3 minutes
even after the breaker is turned ON.
The frequency is increased at the rate of 0.5
Hz every 1 seconds.
The outdoor unit starts.
(Compressor and the outdoor fan start.)
The room temperature
reaches the desired
temperature, and there
is no need for further
cooling.
The room temperature is
59 °F or higher, and is
slightly too cold.
When the frequency reaches Hz,
frequency increases are stopped for a period
of seconds. (Refer to Table 2.)
This is in order to stabilize the return of oil to the
compressor.
The frequency then increases.
If the indoor and outdoor temperatures are high,
the current peak cut-off activates, stopping
any increases in frequency.
DRY operation starts
Operating frequency is stabilized in order to
maintain a comfortable environment.
DRY A operation
The indoor fan changes between "Low"
and "LL" (very low) over a 6-minute cycle.
This is 1/f fluctuation fan operation.
(Refer to Fig. 2.)
Operates to effectively dehumidify the air while
not excessively reducing the indoor
temperature.
The indoor unit operates at 1/f fluctuation fan
operation, at a fan speed that does not cause
a chilly feeling.
DRY B operation
(1) The indoor fan changes between "Low"
and "LL" (very low) over a 6-minute cycle.
This is 1/f fluctuation fan operation.
The compressor operates on a 3-minutes ON,
6-minutes OFF cycle, to prevent the room
temperature from dropping too much.
(2) After appoximately 3 minutes, the
compressor turns OFF, the outdoor fan
turns OFF, and the indoor fan turns OFF.
(3) After approximately 6 minutes, the
conditions return to (1).
The room temperature is
below 59 °F.
Monitoring operation begins.
48
When monitoring operation begins, the
compressor stops, and the indoor fan operates at
"LL" (very low) speed.
1/f fluctuation fan
250
200
150
(Step)
100
50
0
6-minute cycle
Fig. 2
49
7-2. Protective Functions
NOTE
The numerical values such as temperature, frequency, time and current in parentheses are an example
of CMH3172 and the values are different from the other models.
7-2-1. Defrost Detection and Release
(1) Non-stop defrosting
Defrosting sequence
Heating operation
4-way valve ON
Defrost detection occurs in either of the following cases:
The temperature of the heat exchanger remains at or below
the L1 line for 35 minutes after the start of HEAT operation.
The temperature of the heat exchanger remains at or below
the L2 line for 120 minutes after the start of HEAT operation.
Outdoor heat
exchanger temperature (°F)
(- 4)
0
( 21.2)
( 19.4)
(-11.2)
(-13.0)
Frost detection
L2
L1
Non-stop defrosting
Releasing of defrosting
Outdoor air
temperature (°F)
(80 Hz) operation (4-way valve ON)
OFF
ON
Compressor
Outdoor fan
Solenoid valve
(for hot gas bypass)
Indoor fan
OFF
Temperature of the outdoor heat exchanger is at or above the
temperature shown in the table below.
Defrost operation has continued for 12 minutes (max. length).
Temperature of releasing
Defrost operation time
Heat exchanger
temperature for
releasing defrosting
Less than 2 minutes
2 minutes or more
No releasing
57.2 °F or higher (*1)
*1 The temperature for releasing of defrosting is (68 °F) or higher when the
outdoor air temperature is less than 32 °F.
NOTE
Defrost does not occur during HIGH POWER operation.
If other stopped indoor units are started during defrost operation, they begin operating in
defrost mode.
(2) Clean defrost
If all indoor units are stopped during HEAT operation, and frost is detected at the L1 line, and the
conditions for defrost are met, then defrost operation occurs, and the unit stops after defrost is completed.
50
7-2-2. Current Control
The operating current may rise as a result of causes including increasing heating or cooling loads or decreases in power
voltage. In these cases, the operating frequency is automatically reduced, or operation is stopped, in order to control
the operating current so that it is (20 A) or less.
As a result:
• Power breakers and fuses will not be tripped.
• Operation can continue during this period with somewhat reduced heating or cooling capacity.
• Operation at normal capacity is restored when the cause of the current rise is eliminated.
Description of function
Example of operation for heating
Power Point C
Point B
Point A
Frequency
Current
(20A)
(17A)
(16.6A)
Target
frequency
Frequency
Stops operation
Approx.3 minutes
•
•
•
•
Operates at the target frequency at Point A and below.
Stops increases to the frequency between Points A and B.
Reduces the frequency by 1 Hz per 0.5 seconds when Point B is exceeded.
Stops operation, and restarts it appoximately 3 minutes later, if Point C is exceeded.
(May operate when sudden voltage fluctuations occur. Indicates trouble.)
(1) Automatic frequency control
The operating frequency is reduced automatically, or operation is stopped, in order to control the operating
current so that it is at or below the values shown in the table below.
(20A)
HEAT
COOL
Point C (peak cut trip)
(20.0)
(20.0)
Point B (Hz reduction)
(17.0)
(17.0)
Point A (Hz increase prohibit)
(16.6)
(16.6)
NOTE
During defrost operation, the COOL current setting value is used.
(2) Current control
The operating frequency upper limits shown in the figure below are established for frequency reduction and
increase-prohibit.
Current(A)
Example of operation during cooling
Trip
Hz reduction
Hz increase prohibit
Hz reduction
Hz increase
prohibit
Hz reduction
Hz increase prohibit
(16)
(15.6)
0
(30)
Frequency (Hz)
51
7-2-3. Low Start Current
Operation starts at (8 Hz), and the start current is less than the normal operating current. This prevents the flickering
of fluorescent lights or television screens that occurs when ordinary A/C units start.
7-2-4. Compressor Temperature Control
To protect the compressor coil from overheating, the operating frequency is controlled based on the compressor
discharge temperature.
Compressor discharge temperature
(°F)
Trip
(230)
5Hz every 30 sec. reduction
(223)
2Hz every 30 sec. reduction
(212)
No control
Increase
prohibit range
(Hz reduction)
(194)
* Within the increase-prohibit range, the range changes
to the Hz reduction range (2 Hz every 30 seconds) if
the compressor temperature rises by 4 °F.
7-2-5. Control at HEAT Start-up
If HEAT operation is started when the outdoor air temperature is 59 °F or below, the unit operates at the HEAT start-up
frequency (70 Hz or above).
Reset conditions
(1) The compressor frequency exceeds the start-up frequency of (70 Hz).
(2) The compressor thermostat is OFF.
(3) Frequency reduction for indoor high-load control has occurred.
(4) The outdoor air temperature is above 59 °F.
(5) The main-unit switch on one or more indoor units is set to TEST run.
52
8. TROUBLESHOOTING
8-1. Precautions before Performing Inspection or Repair
Both the indoor unit and outdoor unit include electronic control circuits.
Be sure to pay attention to the following before inspecting or repairing the outdoorside electronic circuits.
High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an
electrical charge (charging voltage DC 311 V) even after the power is turned OFF, and some time is required
for the charge to dissipate.
Be careful not to touch any electrified parts before the control circuit board Power Lamp (red) turns OFF.
If the outdoor control circuit board is normal, approximately 180 seconds will be required for the charge to
dissipate. However, allow at least 30 minutes for the charge to dissipate if it is thought there might be trouble
with the outdoor control circuit board.
For example, if the outdoor control circuit board fuse has blown, approximately 30 minutes will be required to
discharge the high-capacity electrolytic capacitors.
53
8-2. Trouble Diagnosis by Error Monitor Lamps
WARNING
To prevent electric shock, do not inspect or repair until
the Power Lamp on the P.C.Board is turned off.
8-2-1. Location of the Error Monitor Lamps
Remove the top plate of outdoor unit and the cover of Electrical Component Box.
The Power Lamp and Error Monitor Lamps are located on the P.C.Board of Electrical Component Box. (Fig.1)
Heat Exchanger
Rear side
P.C.Board of Electrical Component Box.
Error Monitor Lamps
Power Lamp
ERR0
ERR1
ERR2
ERR3
Front side
Fig.1 View from top
8-2-2. Display of the Error Monitor Lamps
If a protective device has activated or there is a sensor failure in the outdoor unit, the 4 error monitor lamps on the
outdoor control circuit board will indicate the nature of the trouble.
: ON
Error Monitor Lamp
ERR0
ERR1
ERR2
: OFF
Error Contents
ERR3
Sensor for compressor discharge temp
Sensor for heat excharge temp
Sensor for branch pipe A (Narrow tube)
Sensor for branch pipe B (Narrow tube)
Sensor for branch pipe C (Narrow tube)
Sensor for branch pipe D (Narrow tube)
Outdoor temp sensor
Sensor for branch pipe A (Wide tube)
Sensor for branch pipe B (Wide tube)
Sensor for branch pipe C (Wide tube)
Sensor for branch pipe D (Wide tube)
HIC circuit trouble (current, temp)
Actuation of comp over load relay
Actuation of freeze protection function
Outdoor unit error. Detail of error message indicate on indoor LED
54
8-3. Checking the Outdoor System
8-3-1. Checking the outdoor unit
No.
1
Work procedure
Check items (unit operation)
• Apply 220 V AC between terminals L1 and L2 on the
• The LED (red) on the control board must illuminate.
outdoor unit terminal plate.
2
• Short-circuit the T-RUN terminal to the COM terminal
of TEST/T-RUN terminals.
• The compressor, fan motor, 4-way valve, and solenoid
valve (for the hot gas bypass) must turn ON.
(They turn ON about (70) seconds later after the power
is turned ON.)
NOTE
If the above check items are okay, but the outdoor unit does not operate, there may be a faulty
connection between the indoor unit and the outdoor unit.
8-3-2. Checking the defrost operation
Using forced defrost operation to check this function.
No.
1
Work procedure
Check items (unit operation)
• Connect a dummy resistor of 39 k ohm to the outdoor
coil temperature sensor connector.
Non-stop defrost
30 sec.
Indoor fan
Setting LL Stop
Setting
(80 Hz)
CM
ON
Solenoid valve
(for hot gas
bypass)
5 sec.
10 sec.
OFF
ON
ON
OFF
OFF
Outdoor fan
Defrost start
ON
Release
• The maximum length of defrost operation is 12
minutes.
Defrost can also be released based on the below
conditions for the outdoor heat exchanger sensor.
Less than 2 minutes Not released
2 minutes or more 57.2 °F or higher (*1)
*1 However, the condition is (68 °F) or higher when
the outdoor air temperature is below 32 °F.
55
8-4. Trouble Diagnosis of Each Part
8-4-1. Problems of Each Part and Inspection Points
For details about the inspection points, refer to the Inspection Points for Each Part.
Does not heat or heating
performance is inadequate.
Does not cool or cooling
performance is inadequate.
The electric expansion valve does
not operate.
Defrost operation does not occur.
Others
The outdoor air temperature is high,
however defrost operation occurs.
The compressor speed does not
increase.
The compressor stops on occasion.
4-way valve does not operate.
Outdoor fan dose not turn.
Outdoor unit does not operate.
Indoor fan dose not turn.
Operation lamp does not illuminate.
Operation lamp blinking.
Inspection
points
Indoor unit does not operate.
Problems
The compressor (only) does not
operate.
Outdoor unit
Indoor unit
No. of
Inspection
Points for
Each part
Self-Diagnostics check
Indoor controller
(control unit)
Indoor unit
Indoor fan motor
Room temperature
sensor
Heat exchanger
temperature sensor
Inter-unit cable
Switch circuit board
Outdoor control circuit
board
(1)
Diode module
HIC
Outdoor unit
Electrolytic capacitor
Fuse
(2)
Compressor
(3)
Compressor protective
sensor
(4)
Outdoor fan motor
4-way valve
(5)
Coil thermistor
(6)
Electric expansion valve
(7)
Branch tubing
temperature sensor
(8)
56
Others
Does not heat or heating
performance is inadequate.
Does not cool or cooling
performance is inadequate.
The electric expansion valve does
not operate.
Defrost operation does not occur.
Others
The outdoor air temperature is high,
however defrost operation occurs.
The compressor speed does not
increase.
The compressor stops on occasion.
4-way valve does not operate.
Outdoor fan dose not turn.
Outdoor unit does not operate.
Indoor fan dose not turn.
Operation lamp does not illuminate.
Operation lamp blinking.
Inspection
points
Indoor unit does not operate.
Problems
The compressor (only) does not
operate.
Outdoor unit
Indoor unit
No. of
Inspection
Points for
Each part
Breaker
(9)
Refrigerant gas pressure
(10)
8-4-2. Inspection Points for Each Part
(1) Outdoor control circuit board
Refer to "8-3-1. Checking the outdoor unit".
NOTE
Do not remove or insert the outdoor control circuit board connector when power is being supplied to it.
(The controller will be damaged.)
(2) Fuse
Check it visually or the continuity with a tester.
(3) Compressor
Check for an open circuit in the compressor coil winding.
(4) Compressor protective sensor (compressor discharge temperature thermistor)
Check that the senseor is securely contained in the thermostart holder.
(5) 4-way valve
Short-circuit the T-RUN terminal to the COM terminal of TEST/T-RUN terminals. Perfrom a test run of the unit
alone, and check whether the 4-way valve inside the outdoor unit produces a click sound.
(6) Coil thermistor
Check that the sensor is securely contained in the thermostat holder.
57
(7) Electric expansion valve
When replacing the electric expansion valve and coil, be sure to attach the connectors in the correct positions.
Labels are applied to the valve body and coil, corresponding to the connector colors, to identify them.
Use a multi-meter to measure the voltage (12 V).
When the power is turned ON, the needle will move in the
following seguence in approximately 10 to 20 seconds for
each point.
Controller check
Voltage varies
No voltage on circuit board
Model No.
Check the illumination
of the red Power Lamp.
CMH1972
MV0
MV1
MV2
CMH2472
CMH3172
MV0
MV1
MV2
Check the coil resistance.
0 ohm
Sequence
MV3
Check the resistance between the gray lead
wire and the other wires.
Resistance is OK if it is 46 + / – 4ohm at 68 °F
Approx. 46 +/– 4 ohm
Replace the controller.
NOTE
Cool the main unit with
a damp cloth or other
means while welding.
When applying
vacuum, use the
special service magnet
and rotate at least 5
revolutions
counterclockwise to
fully open the electric
expansion valve.
*1
Replace the coil.
Open and close the
electric expansion valve
by hand to check it.
No temperature change
Temperature changes
Replace the electric
expansion valve.
This part is normal.
Check elsewhere.
Use the special service magnet and
rotate 5 revolutions clockwise to fully
close the valve.
Then start the unit and measure the
temperature at the inlet and outlet
tubes of the electric expansion valve.
If the temperature difference is large,
the valve is closed.
Then rotate 5 revolutions
counterclockwise to open the valve.
Operation is normal if the temperature
difference between the 2 tubes drops.
*1 If you have manually checked the electric expansion valve, be sure to reapply the outdoor power after you have
replaced the wiring. (The position of the elecric expansion valve will changed.)
58
(8) Branch tubing temperature sensor
Check that the sensor is securely contained in the thermostat holder.
(9) Breaker
Check whether or not the breaker has been tripped.
Check that the breakers and fuses used are of the specified capacity.
Check that the breaker and its line are exclusive for A/C use.
(10) Refrigerant gas pressure
Start a COOL test run, and messure the temperatures of the A/C intake air and discharge air. Compare the values
with the performance charts.
If the values are higher than the performance charts:
Check for refrigerant shortage or blockage of the refrigerant circuit.
< Assessment of refrigerant shortage >
1. The pressure in the low-pressure section is 5 MPa or more below the value in the performance charts.
2. There is little condensation on the indoor heart exchanger, which overall appears dry.
< Distinguishing between refrigerant shortage and refrigerant circuit blockage >
If the pressure in the low-pressure section does not change when the circuit is charged 2 to 3 times with
refrigerant gas (0.44 lbs each time), or if the change is small, then the problem may not be
refrigerant shortage.
The problem may be a blockage of the refrigerant circuit.
1. Check that there is no internal leakage inside the 4-way valve:
At the low-pressure side tubing, check that there is no temperature difference between the intake and
discharge of the 4-way valve.
2. Check that the electric expansion valve is not blocked. Check as described on the preceding page.
59
8-5. Trouble Diagnosis of Fan Motor
This outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil
resistance, and the following procedure should be used to check the motor.
Perform the trouble diagnosis by Test Run mode described on Installation Instructions of indoor unit.
Important: (A) Turn OFF the power before connecting or disconnecting the motor connectors.
(B) When performing voltage measurement at the outdoor controller connector for (3) in the table
below, the DC motor will trip and voltage output will stop approximately 10 seconds after
operation is started. For this reason, to measure the voltage again, first turn OFF the outdoor
unit power, then, measure the voltage in Test Run mode.
[Trouble symptom 1]
The fan does not stop when the outdoor unit stops.
Outdoor unit controller trouble
[Trouble symptom 2] The fan motor does not rotate when the outdoor unit is operating.
(Diagnostic procedure)
* Disconnect the motor connectors and measure the voltage at the DC motor connectors on the outdoor
unit controller (3 locations).
Measurement location
(1) Vm-Gnd: Between pin 1 and pin 4
(2) Vcc-Gnd: Between pin 5 and pin 4
(3) Vsp-Gnd: Between pin 7 and pin 4
Normal value
DC 230V or more
DC 14V or more
After fluctuating 4 times between DC 1.7 to 6.1V
(1 sec. ON) and DC 0 V (1 sec. OFF), the DC
motor trips.
(Diagnostic results)
All of the above measured values are normal. Fan motor trouble (Replace the motor.)
Any one of the above measured values is not normal. Outdoor unit controller trouble
(Replace the controller .)
(Reference)
DC motor connector pin arrangement
Pin 1: Vm (red)
Pin 2: Not used
Pin 3: Not used
Pin 4: Gnd (blue)
Pin 5: Vcc (brown)
Pin 6: PG (white)
Pin 7: Vsp (orange)
[Trouble symptom 3]
Motor rotates for some time (several seconds), but then quickly stops, when the outdoor
unit operates.
(There is trouble in the system that provides feedback of motor rotation speed from the
motor to the outdoor unit controller.)
[Trouble symptom 4] Fan motor rotation speed does not change during outdoor unit operation.
[Trouble symptom 5] Fan motor rotation speed varies excessively during outdoor unit operation.
(Remedy for symptom 3 to 5)
It is not possible to identify whether the trouble is outdoor unit controller trouble or motor trouble.
Therefore, first replace the outdoor unit controller, then (if necessary) replace the DC motor.
60
9. REFRIGERANT R410A:
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
9-1. Characteristics of New Refrigerant R410A
9-1-1. What is New Refrigerant R410A?
R410A is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture. Its
refrigeration capacity and energy efficiency are about the same level as the conventional refrigerant, R22.
9-1-2. Components (mixing proportions)
HFC32 (50%) / HFC125 (50%)
9-1-3. Characteristics
Less toxic, more chemically stable refrigerant
The composition of refrigerant R410A changes whether it is in a gaseous phase or liquid phase. Thus, when
there is a refrigerant leak the basic performance of the air conditioner may be degraded because of a change in
composition of the remaining refrigerant. Therefore, do not add new refrigerant. Instead, recover the
remaining refrigerant with the refrigerant recovery unit. Then, after evacuation, totally recharge the specified
amount of refrigerant with the new refrigerant at its normal mixed composition state (in liquid phase).
When refrigerant R410A is used, the composition will differ depending on whether it is in gaseous or liquid
phase, and the basic performance of the air conditioner will be degraded if it is charged while the refrigerant is in
gaseous state. Thus, always charge the refrigerant while it is in liquid phase.
CAUTION
Ether-type oil is used for compressor oil for R410A-type units, which is different
from the mineral oil used for R22. Thus more attention to moisture prevention and
faster replacement work compared with conventional models are required.
61
9-2. Checklist before Servicing
Use a clutch-type flare tool for R410A or the conventional flare tool. Note that sizes of the resultant flares differ
between these two tools. Where a conventional flare tool is used, make sure to observe A Specification (amount of
extrusion) by using the flare spacer.
Specification A
Diameter of tube D
Flare tool for R410A
Conventional flare tool (for R22)
Dia.3/8" (9.52 mm)
0 to 0.0196"
0.0472"
Dia.1/2" (12.7 mm)
(0 to 0.5 mm)
(1.2 mm)
Dia.1/4" (6.35 mm)
Dia.5/8" (15.88 mm)
Size of flare
D
D
A
Spacer
A
Flare tool for R410A
Conventional flare tool (R22)
Tubing precautions
Refrigerant R410A is more easily affected by dust or moisture compared with R22, thus be sure to temporarily
cover the ends of the tubing with caps or tape prior to installation.
Never use 0.0276" (0.7 mm)-thick copper tubing or tubing which is less than 0.0315" (0.8 mm) in thickness, since
air conditioners with R410A are subject to higher pressure than those using R22 and R407C.
No addition of compressor oil for R410A
No additional charge of compressor oil is permitted.
No use of refrigerant other than R410A
Never use a refrigerant other than R410A.
If refrigerant R410A is exposed to fire
Through welding, etc., toxic gas may be released when R410A refrigerant is exposed to fire. Therefore, be sure
to provide ample ventilation during installation work.
Caution in case of R410A leak
Check for possible leak points with the special leak detector for R410A. If a leak occurs inside the room,
immediately provide thorough ventilation.
62
9-3. Tools Specifically for R410A
For servicing, use the following tools for R410A
Tool Distinction
Tool Name
Gauge manifold
Charging hose
Gas leak detector
Refrigerant cylinder
Charging cylinder
Refrigerant recovery unit
Tools specifically for R410A
Vacuum pump with anti-reverse flow (*1)
(Solenoid valve-installed type, which prevents oil from flowing back into the
unit when the power is off, is recommended.)
Vacuum pump (*2)...can be used if the following adapter is attached.
Vacuum pump adapter (reverse-flow prevention adapter) (*3).
(Solenoid valve-installed adapter attached to a conventional vacuum pump.)
Electronic scale for charging refrigerant
Flare tool
Bender
Tools which can be commonly used for R22,
R407C, and R410A
CAUTION
Torque wrench
Cutter, reamer
Welding tool, nitrogen gas cylinder
The above tools specifically for R410A must not be used for R22 and R407C.
Doing so will cause malfunction of the unit.
For the above vacuum pump (*1, *2) and vacuum pump adapter (*3), those for
R22-type units can be used for R410A-type. However, they must be used
exclusively for R410A and never alternately with R22 and R407C.
To prevent other refrigerants (R22, R407C) from being mistakenly charged to this unit, shape and external
diameter of the service port screw has been altered.
<External diameter of service port> R410A : 5/16"
R22, R407C : 1/4"
9-4. Tubing Installation Procedures
When the tubes are connected, always apply HAB oil on the flare portions to improve the sealing of tubing.
The following is the HAB oil generally used:
Esso: ZERICE S32
NOTE
For details on tubing installation procedures, refer to the installation manuals attached to the indoor
unit and outdoor unit.
63
9-5. In Case of Compressor Malfunction
CAUTION
Should the compressor malfunction, be sure to make the switch to a replacement
compressor as quickly as possible.
Use only the tools indicated exclusively for R410A.
for R410A."
See "9-3. Tools Specifically
9-5-1. Procedure for Replacing Compressor
(1) Recovering refrigerant
Any remaining refrigerant inside the unit should not be
released to the atmosphere, but recovered using the
refrigerant recovery unit for R410A.
(1) Recover refrigerant
OK
Do not reuse the recovered refrigerant, since it will contain
impurities.
(2) Replacing Compressor
(2) Replace compressor
Soon after removing seals of both discharge and suction
tubes of the new compressor, replace it quickly.
OK
(3) Checking for sealing
Use nitrogen gas for the pressurized gas, and never use a
refrigerant other than R410A. Also do not use oxygen or
any flammable gas.
(3) Check for sealing
OK
(4) Evacuation
Use a solenoid valve-installed vacuum pump so that
even if power is cut off in the middle of evacuation of air
due to a power interruption, the valve will prevent the
pump oil from flowing back.
(4) Evacuation
OK
The equipment may be damaged if moisture remains in
the tubing, thus carry out the evacuation thoroughly.
When using a vacuum pump with exhaust air volume more
than 0.883 cu.ft./min. and ultimate vacuum pressure rate
of 50 micron Hg.
Standard time for evacuation
Length of tubing
Less than 33 ft. (10 m)
More than 33 ft. (10 m)
Evacuation time
More than 10 minutes
More than 15 minutes
64
(5) Recharge
(5) Recharging
Configuration and characteristics of cylinders
Be sure to charge the specified amount of
refrigerant in liquid state using the service port
of the wide tube service valve. The proper
amount is listed on the unit's nameplate.
Valve
When the entire amount cannot be charged all at
once, charge gradually while operating the unit in
Cooling Operation.
CAUTION
Never charge a large amount
of liquid refrigerant at once to
the unit. This may cause
damage to the compressor.
Liquid
Single valve
Charge liquid refrigerant with
cylinder in up-side-down position.
When charging with a refrigerant cylinder, use an
electronic scale for charging refrigerant. In this
case, if the volume of refrigerant in the cylinder
becomes less than 20% of the fully-charged
amount, the composition of the refrigerant starts
to change. Thus, do not use the refrigerant if
the amount in the charging cylinder is less
than 20%.
Fig. 1
Valve
Also, charge the minimum necessary amount to
the charging cylinder before using it to charge
the air conditioning unit.
Example:
Liquid
In case of charging refrigerant to a unit requiring
1.68 lb. (0.76 Kg) using a capacity of a 22 lb. (10
Kg) cylinder, the minimum necessary amount for
the cylinder is:
Single valve (with siphon tube)
Charge with cylinder in normal position.
1.68 + 22 0.20 = 6.08 lb.
(0.76 + 10 0.20 = 2.76 Kg)
Fig. 2
For the remaining refrigerant, refer to the
instructions of the refrigerant manufacturer.
If using a charging cylinder, transfer the specified
amount of liquid refrigerant from the refrigerant
cylinder to the charging cylinder.
NO!
Charging
cylinder
Prepare an evacuated charging cylinder
beforehand.
CAUTION
To prevent the composition
of R410A from changing,
never bleed the refrigerant
gas into the atmosphere
while transferring the
refrigerant. (Fig. 3)
Liquid
Open
Do not use the refrigerant if the amount in the
charging cylinder is less than 20%.
65
Refrigerant
cylinder
Fig. 3
9-6. In Case Refrigerant is Leaking
CAUTION
Never attempt to charge additional refrigerant when refrigerant has been leaking
from the unit. Follow the procedure described below to locate points of leaks and
carry out repairs, then recharge the refrigerant.
(1) Detecting Leaks
Use the detector for R410A to locate refrigerant leak
points.
(1) Detect leaks
(2) Recovering refrigerant
OK
Never release the gas to the atmosphere; recover
residual refrigerant using the refrigerant recovery unit for
R410A, instead.
Do not reuse the recovered refrigerant because its
composition will have been altered.
(2) Recover refrigerant
OK
(3) Welding leaking points
Confirm again that no residual refrigerant exists in the unit
before starting welding.
(3) Weld leaking points
Weld securely using flux and wax for R410A.
OK
Prevent oxide film from forming inside the tubes utilizing
substitution with nitrogen (N2) in the refrigerant circuit of
the unit. Leave ends of tubes open during welding.
(4) Checking for sealing
(4) Check for sealing
Use nitrogen gas for the pressurized gas, and never use
a refrigerant other than R410A. Also do not use oxygen or
any flammable gas.
(5) Evacuation
OK
(5) Evacuation
Use a solenoid valve-installed vacuum pump so that
even if power is cut off in the middle of evacuation of air
due to a power interruption, the valve will prevent the
pump oil from flowing back.
The equipment may be damaged if moisture remains in
the tubing, thus carry out the evacuation thoroughly.
When using a vacuum pump with exhaust air volume
more than 0.883 cu.ft./min. and ultimate vacuum pressure
rate of 50 micron Hg.
Standard time for evacuation
Length of tubing
Less than 33 ft. (10 m)
More than 33 ft. (10 m)
Evacuation time
More than 10 minutes
More than 15 minutes
(6) Recharging
Recharge unit in the same manner explained on the
previous page "(5) Recharging."
66
OK
(6) Recharge
9-7. Charging Additional Refrigerant
9-7-1. When Tubes are Extended
Observe the proper amount of refrigerant as stated in this service manual or the installation manual that came
with the indoor unit. Charge additional refrigerant in liquid state only.
CAUTION
Never charge additional refrigerant if refrigerant is leaking from the unit. Follow
instructions given in "9-6. In Case Refrigerant is Leaking" and completely carry out
repairs. Only then should you recharge the refrigerant.
9-8. Retro-Fitting Existing Systems
9-8-1. Use of Existing Units
Never use new refrigerant R410A for existing units which use R22. This will cause the air conditioner to
operate improperly and may result in a hazardous condition.
9-8-2. Use of Existing Tubing
If replacing an older unit that used refrigerant R22 with a R410A unit, do not use its existing tubing. Instead,
completely new tubing must be used.
67
APPENDIX A INSTALLATION INSTRUCTIONS
CMH1972
CMH2472
CMH3172
(II-852-6-4189-993-00-2)
A-1
07-155 CMH1972-3172
6/6/07
9:34 AM
Page a
For Outdoor Unit
INSTALLATION INSTRUCTIONS
– Inverter Multi Split System Air Conditioner –
COOL / DRY/ HEAT Model
This air conditioner uses the new refrigerant R410A.
NOTE
Refrigerant service valve size = 5/16"
Contents
Model Combinations
Page
IMPORTANT!
Please Read Before Starting .................................. 2
1.
2.
3.
GENERAL .......................................................... 3
1-1. Tools Required for Installation (not supplied)
1-2. Accessories Supplied with Unit
1-3. Optional Copper Tubing Kit
1-4. Type of Copper Tube and Insulation Material
1-5. Additional Materials Required for Installation
INSTALLATION SITE SELECTION ................... 4
2-1. Indoor Unit
2-2. Connecting Indoor Units
2-3. Outdoor Unit
2-4. Outer Dimensions of Outdoor Unit
2-5. Diagram of Outdoor Unit Installation
INSTALLATION PROCESS .............................. 13
3-1. Embedding the Tubing and Wiring
3-2. Use of the Flaring Method
3-3. Flaring Procedure with a Flare Tool
3-4. Caution before Connecting Tubes Tightly
3-5. Tubing Connections
3-6. Insulation of Refrigerant Tubing
3-7. Taping the Tubes
3-8. Finishing the Installation
Combine indoor and outdoor units only as listed
below.
Indoor Unit
Outdoor Unit
KMHS0772
CMH1972
KMHS0972
CMH2472
KMHS1272
CMH3172
KMHS1872
KMHS2472
Combine indoor and outdoor units only as listed in
the combination tables for 3-room or 4-room
outdoor unit as shown in its respective manual.
Power Source:
60 Hz, single-phase, 230 / 208 VAC
Be sure to read the yellow instruction sheet
attached to the outdoor unit for models using the
new refrigerant R410A.
Combination example
Indoor unit B
Indoor unit A
4.
AIR PURGING................................................... 16
I Air Purging with a Vacuum Pump (for Test Run)
I Pump Down
5.
WIRING INSTRUCTIONS ................................ 19
5-1. General Precautions on Wiring
5-2. Recommended Wire Length and Diameter
5-3. Wiring System Diagram
5-4. How to Connect Wiring to the Terminal
5-5. Wiring Instructions for the Outdoor Unit
6.
TEST RUN......................................................... 23
7.
CONNECTING A HOME AUTOMATION
DEVICE ............................................................. 24
8.
INSTALLATION CHECK SHEET ...................... 24
85264189993002 © SANYO 2007
Indoor unit C
Outdoor unit
Indoor unit D
NOTE
The illustrations are based on the typical appearance of
a standard model. Consequently, the shape may differ
from that of the air conditioner that you are installing.
SANYO Commercial Solutions
A Division of SANYO North America Corporation
Cornerstone Business Park,
1062 Thorndale Avenue,
Bensenville, IL 60106, U.S.A.
In Canada
SANYO Canada Inc.
1-300 Applewood Crescent, Concord
Ontario, L4K 5C7, Canada
07-155 CMH1972-3172
6/6/07
9:34 AM
Page 2
IMPORTANT!
Please Read Before Starting
When Installing…
…In a Ceiling or Wall
This air conditioning system meets strict safety and operating
standards. As the installer or service person, it is an important
part of your job to install or service the system so it operates
safely and efficiently.
Make sure the ceiling/wall is strong enough to hold the
unit’s weight. It may be necessary to construct a strong
wood or metal frame to provide added support.
…In a Room
For safe installation and trouble-free operation, you
must:
G Carefully read this instruction booklet before beginning.
G Follow each installation or repair step exactly as shown.
G Observe all local, state, and national electrical codes.
G Pay close attention to all warning and caution notices
given in this manual.
This symbol refers to a hazard
or unsafe practice which can
WARNING
result in severe personal injury
or death.
This symbol refers to a hazard
or unsafe practice which can
CAUTION
result in personal injury or product or property damage.
Properly insulate any tubing run inside a room to prevent
“sweating” that can cause dripping and water damage to
walls and floors.
…In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a
solid, level foundation for the outdoor unit. This prevents
water damage and abnormal vibration.
…In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a
metal frame. Provide a suitable air baffle.
…In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher
than drifting snow. Provide snow vents.
If Necessary, Get Help
When Connecting Refrigerant Tubing
These instructions are all you need for most installation
sites and maintenance conditions. If you require help for a
special problem, contact our sales/service outlet or your
certified dealer for additional instructions.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of
the flare and union tubes before connecting them, then
tighten the nut with a torque wrench for a leak-free
connection.
In Case of Improper Installation
The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to
follow the instructions in this document.
• Check carefully for leaks before starting the test run.
When Servicing
SPECIAL PRECAUTIONS
WARNING
•
•
•
•
• Turn the power OFF at the main power box (mains) before
opening the unit to check or repair electrical parts and
wiring.
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE
PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN
SHOULD ATTEMPT TO WIRE THIS SYSTEM.
Do not supply power to the unit until all wiring and tubing
are completed or reconnected and checked.
Highly dangerous electrical voltages are used in this
system. Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and
inadequate grounding can cause accidental injury or
death.
Ground the unit following local electrical codes.
Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.
• Keep your fingers and clothing away from any moving
parts.
• Clean up the site after you finish, remembering to check
that no metal scraps or bits of wiring have been left inside
the unit being serviced.
Others
CAUTION
• Ventilate any enclosed areas when installing or testing
the refrigeration system. Escaped refrigerant gas, on
contact with fire or heat, can produce dangerously
toxic gas.
When Transporting
• Confirm upon completing installation that no refrigerant
gas is leaking. If escaped gas comes in contact with a
stove, gas water heater, electric room heater or other heat
source, it can produce dangerously toxic gas.
Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when
lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers.
• Do not install only a single indoor unit.
2
07-155 CMH1972-3172
6/6/07
9:34 AM
Page 3
1. General
This booklet briefly outlines where and how to install the
air conditioning system. Please read over the entire set
of instructions for the indoor and outdoor units and make
sure all accessory parts listed are with the system before
beginning. If the electric wiring diagram does not appear
in this manual, please check for the diagram on the
indoor unit.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
1-1. Tools Required for Installation (not supplied)
1. Standard screwdriver
2. Phillips head screwdriver
3. Knife or wire stripper
4. Tape measure
Carpenter’s level
Sabre saw or key hole saw
Hacksaw
Core bits
Hammer
Drill
Tube cutter
Tube flaring tool
Torque wrench
Adjustable wrench
Reamer (for deburring)
Vacuum pump (For R410A)
Manifold valve
1-2. Accessories Supplied with Unit
Table 1
Parts
Figure
Q’ty
Hex wrench
Labels for inter-unit
cable and tube
1
Parts
Figure
Cushion rubber
4
Parts
Reducer
(1/2" 3/8")
Figure
Q’ty
CMH2472
1
CMH3172
2
Packed in the outdoor unit.
Reducer
4 each (3/8" 1/2")
A B C D
Q’ty
CMH1972
1
1-3. Optional Copper Tubing Kit
2.
Copper tubing for connecting the outdoor unit to the
indoor unit is available in kits which contain the narrow
and wide tubing, fittings and insulation. Consult your
nearest sales outlet or A/C workshop.
Foamed polyethylene insulation for the specified
copper tubes as required to precise length of tubing.
Wall thickness of the insulation should be not less
than 5/16" (8 mm).
3.
Use insulated copper wire for field wiring. Wire size
varies with the total length of wiring.
Refer to 5. Wiring Instructions for details.
1-4. Type of Copper Tube and Insulation Material
If you wish to purchase these materials separately from
a local source, you will need:
1.
CAUTION
Deoxidized annealed copper tube for refrigerant tubing as detailed in Table 2.
Cut each tube to the appropriate lengths 1' to 1'4"
(30 cm to 40 cm) to dampen vibration between units.
Table 2
Narrow Tube
Wide Tube
Model
Outer Dia.
Thickness
Outer Dia.
Thickness
KMHS0772
1/4" (6.35 mm)
0.0314" (0.8 mm)
3/8" (9.52 mm)
0.0314" (0.8 mm)
KMHS0972
1/4" (6.35 mm)
0.0314" (0.8 mm)
3/8" (9.52 mm)
0.0314" (0.8 mm)
KMHS1272
1/4" (6.35 mm)
0.0314" (0.8 mm)
3/8" (9.52 mm)
0.0314" (0.8 mm)
KMHS1872
1/4" (6.35 mm)
0.0314" (0.8 mm)
1/2" (12.70 mm)
0.0314" (0.8 mm)
KMHS2472
1/4" (6.35 mm)
0.0314" (0.8 mm)
5/8" (15.88 mm)
0.0393" (1.0 mm)
3
Check local electrical codes
and regulations before
obtaining wire. Also, check
any specified instructions or
limitations.
07-155 CMH1972-3172
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Page 4
1-5. Additional Materials Required for Installation
1.
2.
Refrigeration (armored) tape
Insulated staples or clamps for connecting wire
(See local codes)
Putty
Refrigeration lubricant
Clamps or saddles to secure refrigerant tubing
3.
4.
5.
Indoor unit
2. Installation Site Selection
2-1. Indoor Unit
WARNING
To prevent abnormal heat generation
and the possibility of fire, do not
place obstacles, enclosures and
grilles in front of or surrounding the
air conditioner in a way that may
block air flow.
Drain hose
Outside drainage
Fig. 1
AVOID:
G
direct sunlight.
G
nearby heat sources that may affect performance of the
unit.
G
areas where leakage of flammable gas may be expected.
G
placing or allowing any obstructions near the A/C inlet or
outlet.
G
installing in rooms that contain instant-on (rapid-start)
fluorescent lamps. (These may prevent the A/C from
receiving signals.)
G
places where large amounts of oil mist exist.
G
installing in locations where there are devices that
generate high-frequency emissions.
6" (15 cm)
min.
2" (5 cm)
min.
Front View
Fig. 2
INDOOR
UNIT (1)
Tubing length (L1)
Elevation
difference (H1)
INDOOR
UNIT (2)
L2
OUTDOOR
UNIT
H2
DO:
L3
G
select an appropriate position from which every corner of
the room can be uniformly cooled. (High on a wall is best.)
G
select a location that will hold the weight of the unit.
G
select a location where tubing and drain hose have the
shortest run to the outside. (Fig. 1)
G
G
2" (5 cm)
min.
H4
INDOOR
UNIT (4)
INDOOR
UNIT (3)
L4
H3
Fig. 3a
CAUTION
allow room for operation and maintenance as well as
unrestricted air flow around the unit. (Fig. 2)
Indoor unit
For stable operation of the
air conditioner, do not
install wall-mounted type
indoor units less than 5'
(1.5 m) from floor level.
install the unit within the maximum elevation difference
(H1, H2, H3, H4) above or below the outdoor unit and
within a total tubing length (L1+L2+L3, L1+L2+L3+L4)
from the outdoor unit as detailed in Table 3 and Fig. 3a.
Minimum height
from floor level
5' (1.5 m)
Floor level
Fig. 3b
4
Wall
07-155 CMH1972-3172
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9:34 AM
Page 5
G
Install the indoor unit more than 3.3' (1 m) away from any
antenna or power lines or connecting wires used for television, radio, telephone, security system, or intercom.
Electrical noise from any of these sources may affect
operation.
G
install in a sturdy manner to avoid increased operating
noise.
Table 3
Model
Max.
Allowable
Tubing Length
per unit
(ft.)
Max. Allowable Total
Tubing Length
at shipment
(L1+L2+L3) or
(L1+L2+L3+L4)
(ft.)
Limit of
Total Tubing Length
(L1+L2+L3) or
(L1+L2+L3+L4)
(ft.)
Limit of Elevation
Difference
(H1, H2, H3, H4)
(ft.)
Required Amount
of Additional
Refrigerant
(oz./ft.)*
CMH1972
82
150 (L1+L2+L3)
150 (L1+L2+L3)
50
—
CMH2472
82
150 (L1+L2+L3+L4)
200 (L1+L2+L3+L4)
50
0.22
CMH3172
100
150 (L1+L2+L3+L4)
230 (L1+L2+L3+L4)
50
0.22
* If total tubing length becomes 150 to 200 ft. (Max.) or 150 to 230 ft. (Max.), charge additional refrigerant (R410A) by 0.22 oz./ft.
No additional charge of compressor oil is necessary. For more detailed charging information, refer to the Technical & Service Manual.
5
07-155 CMH1972-3172
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9:34 AM
Page 6
2-2. Connecting Indoor Units
(1) Connecting indoor unit for CMH1972
(A)
Outdoor unit
Indoor unit
3/8"(9.52mm)
C
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
3/8"(9.52mm)
B
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
3/8"(9.52mm)
A
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
Fig. 4a
(B)
Outdoor unit
Indoor unit
3/8"(9.52mm)
C
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
3/8"(9.52mm)
B
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
1/2"(12.70mm)
A
(KMHS1872)
3/8"(9.52mm)
1/4"(6.35mm)
Flare 3/8"(9.52mm) Union 1/2"(12.70mm)
A joint for connecting tubes of
different sizes
(3/8"(9.52mm) 1/2"(12.70mm)) Supplied Reducer
Fig. 4b
(2) Connecting indoor unit for CMH2472
(A)
Outdoor unit
Indoor unit
3/8"(9.52mm)
D
3/8"(9.52mm)
(KMHS0772,KMHS0972,KMHS1272)
1/4"(6.35mm)
3/8"(9.52mm)
C
3/8"(9.52mm)
(KMHS0772,KMHS0972,KMHS1272)
1/4"(6.35mm)
3/8"(9.52mm)
B
3/8"(9.52mm)
(KMHS0772,KMHS0972,KMHS1272)
1/4"(6.35mm)
3/8"(9.52mm)
A
1/2"(12.70mm)
Flare 1/2"(12.70mm)
(1/2"(12.70mm)
(KMHS0772,KMHS0972,KMHS1272)
1/4"(6.35mm)
Union 3/8"(9.52mm)
3/8"(9.52mm)) Supplied Reducer
Fig. 4c
6
07-155 CMH1972-3172
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9:34 AM
Page 7
(B)
Outdoor unit
Indoor unit
3/8"(9.52mm)
D
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
3/8"(9.52mm)
C
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
3/8"(9.52mm)
B
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
1/2"(12.70mm)
A
(KMHS1872)
1/2"(12.70mm)
1/4"(6.35mm)
Fig. 4d
(C)
Outdoor unit
Indoor unit
3/8"(9.52mm)
D
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
3/8"(9.52mm)
C
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
3/8"(9.52mm)
B
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
5/8"(15.88mm)
A
(KMHS2472)
1/2"(12.70mm)
1/4"(6.35mm)
Flare 1/2"(12.70mm)
Union 5/8"(15.88mm)
(1/2"(12.70mm)
5/8"(15.88mm)) Locally purchased
Fig. 4e
(D)
Outdoor unit
Indoor unit
3/8"(9.52mm)
D
3/8"(9.52mm)
(KMHS0772,KMHS0972,KMHS1272)
1/4"(6.35mm)
3/8"(9.52mm)
C
3/8"(9.52mm)
(KMHS0772,KMHS0972,KMHS1272)
1/4"(6.35mm)
1/2"(12.70mm)
B
(KMHS1872)
3/8"(9.52mm)
1/4"(6.35mm)
5/8"(15.88mm)
A
1/2"(12.70mm)
Flare 1/2"(12.70mm)
(KMHS2472)
1/4"(6.35mm)
Union 5/8"(15.88mm)
(1/2"(12.70mm) 5/8"(15.88mm))
Locally purchased
Flare 3/8"(9.52mm)
Union 1/2"(12.70mm)
(3/8"(9.52mm) 1/2"(12.70mm))
Locally purchased
Fig. 4f
7
07-155 CMH1972-3172
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9:34 AM
Page 8
(3) Connecting indoor unit for CMH3172
(A)
Outdoor unit
Indoor unit
3/8"(9.52mm)
D
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
3/8"(9.52mm)
C
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
3/8"(9.52mm)
B
(KMHS0772,KMHS0972,KMHS1272)
1/2"(12.70mm)
1/4"(6.35mm)
3/8"(9.52mm)
A
(KMHS0772,KMHS0972,KMHS1272)
1/2"(12.70mm)
1/4"(6.35mm)
Flare 1/2"(12.70mm)
Union 3/8"(9.52mm)
(1/2"(12.70mm)
3/8"(9.52mm)) Supplied Reducer
Fig. 4g
(B)
Outdoor unit
Indoor unit
3/8"(9.52mm)
D
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
3/8"(9.52mm)
C
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
3/8"(9.52mm)
B
(KMHS0772,KMHS0972,KMHS1272)
1/2"(12.70mm)
1/4"(6.35mm)
1/2"(12.70mm)
A
(KMHS1872)
1/2"(12.70mm)
1/4"(6.35mm)
Flare 1/2"(12.70mm)
(1/2"(12.70mm
Union 3/8"(9.52mm)
3/8"(9.52mm)) Supplied Reducer
Fig. 4h
(C)
Outdoor unit
Indoor unit
3/8"(9.52mm)
D
3/8"(9.52mm)
(KMHS0772,KMHS0972,KMHS1272)
1/4"(6.35mm)
3/8"(9.52mm)
C
3/8"(9.52mm)
(KMHS0772,KMHS0972,KMHS1272)
1/4"(6.35mm)
1/2"(12.70mm)
B
1/2"(12.70mm)
(KMHS1872)
1/4"(6.35mm)
1/2"(12.70mm)
A
1/2"(12.70mm)
(KMHS1872)
1/4"(6.35mm)
Fig. 4i
8
07-155 CMH1972-3172
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9:34 AM
Page 9
(D)
Outdoor unit
Indoor unit
3/8"(9.52mm)
D
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
3/8"(9.52mm)
C
(KMHS0772,KMHS0972,KMHS1272)
3/8"(9.52mm)
1/4"(6.35mm)
3/8"(9.52mm)
B
(KMHS0772,KMHS0972,KMHS1272)
1/2"(12.70mm)
1/4"(6.35mm)
5/8"(15.88mm)
A
(KMHS2472)
1/2"(12.70mm)
1/4"(6.35mm)
Flare 1/2"(12.70mm) Union 5/8"(15.88mm)
Flare 1/2"(12.70mm)
(1/2"(12.70mm) 5/8"(15.88mm))
Locally purchased
Union 3/8"(9.52mm)
(1/2"(12.70mm) 3/8"(9.52mm))
Supplied Reducer
Fig. 4j
(E)
Outdoor unit
Indoor unit
3/8"(9.52mm)
D
3/8"(9.52mm)
(KMHS0772,KMHS0972,KMHS1272)
1/4"(6.35mm)
3/8"(9.52mm)
C
3/8"(9.52mm)
(KMHS0772,KMHS0972,KMHS1272)
1/4"(6.35mm)
1/2"(12.70mm)
B
1/2"(12.70mm)
(KMHS1872)
1/4"(6.35mm)
5/8"(15.88mm)
A
(KMHS2472)
1/2"(12.70mm)
1/4"(6.35mm)
Flare 1/2"(12.70mm)
(1/2"(12.70mm)
Union 5/8"(15.88mm)
5/8"(15.88mm)) Locally purchased
Fig. 4k
9
07-155 CMH1972-3172
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Page 10
2-3. Outdoor Unit
NO
AVOID:
Exhaust fan
Hot air
G
heat sources, exhaust fans, etc. (Fig. 5a)
G
damp, humid or uneven locations.
Heat source
Outdoor unit
DO:
G
choose a place that is well ventilated.
G
allow enough room around the unit for air intake/
exhaust and possible maintenance. (Fig. 5b)
G
provide a solid base (level concrete pad, concrete
block, 6" × 1'4" (15 × 40 cm) beams or equal), a minimum of 6" (15 cm) above ground level to reduce
humidity and protect the unit against possible water
damage and decreased service life. (Figs. 5c and 5d)
CAUTION
Fig. 5a
Obstacle above
Air intake
Min.
A solid base must not cover
the hole of the bottom plate.
4" (10 cm)
Min. 6" (15 cm)
Air discharge
Valve
side
Min. 10"
(25 cm)
Min.
1’8" (50 cm)
Fig. 5b
G
Install cushion rubber under unit’s feet to reduce
vibration and noise. (Fig. 5e)
G
use lug bolts or equal to bolt down unit, reducing
vibration and noise.
G
Install in a location where no antenna of a television
or radio exists within 10' (3 m).
Min.
Min.
7' (2 m) 7' (2 m)
Obstacle
choose a place as cool as possible.
Air discharge
G
Ground
Min. 6" (15 cm)
Air intake
Drain holes
Fig. 5c
Anchor bolts
(4 pcs.)
Min. 6" (15 cm)
Air intake
Concrete
or equal
Ab
ou
" (15
t1
t6
Abou
6"
(40
cm)
cm
)
Fig. 5d
Cushion rubber
Fig. 5e
10
07-155 CMH1972-3172
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Page 11
2-4. Outer Dimensions of Outdoor Unit
(1) CMH1972
5-11/32
15/32
A
2-29/32
13-19/32
14-17/32
Service valve on narrow tube side
(Outer diameter 1/4"(6.35))
2-3/4
2-3/4
Service valve on wide tube side
(Outer diameter 3/8"(9.52))
1-13/16
2-1/16
2-1/32
4-1/2
4-7/16
2-15/16
2-27/32
23/32
29-1/8 (740)
A
12-19/32
35-7/16 (900)
5-29/32
23-15/16
Fig. 6a
(2) CMH2472
A
5-11/32
15/32
2-29/32
Service valve on narrow tube side
(Outer diameter 1/4"(6.35))
1-13/16
2-1/16
2-15/16
2-3/4
2-3/4
Service valve on wide tube side
(Outer diameter 3/8"(9.52))
4-7/16
2-27/32
5-29/32
23/32
29-1/8 (740)
14-17/32
13-19/32
A
35-7/16 (900)
12-19/32
23-15/16
2-1/32
4-1/2
Service valve on wide tube side
(Outer diameter 1/2"(12.70))
2-13/32
Fig. 6b
(3) CMH3172
A
2-29/32
1-13/16
2-1/16
2-1/32
4-1/2
2-15/16
2-3/4
2-3/4
Service valve on wide tube side
(Outer diameter 3/8"(9.52))
2-27/32
5-29/32
35-1/32 (890)
Service valve on narrow tube side
(Outer diameter 1/4"(6.35))
23/32
A
35-7/16 (900)
4-7/16
5-11/32
15/32
12-19/32
13-19/32
14-17/32
23-15/16
Service valve on wide tube side
(Outer diameter 1/2"(12.70))
2-13/32
Fig. 6c
11
unit: inch (mm)
07-155 CMH1972-3172
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9:34 AM
Page 12
2-5. Diagram of Outdoor Unit Installation
Never install only a single indoor unit.
Be sure to connect indoor and outdoor units only in
combinations that are listed in the catalog or in the
combination table that was provided with the outdoor unit.
(Use caution. Connecting any other model may result in
operation failure and malfunction.)
Indoor unit D
The dimensions indicated by
in the figure below are
spaces that are required in order to maintain
performance. Install in a location where the dimensions
indicated by
are ensured, and where 2 or more faces
of the unit are unobstructed. In principle, the top direction
should be unobstructed.
Indoor unit C
Indoor unit B
)
0cm
"(2
er 8
Ov
Indoor unit A
Service space
Ov
er 4
"(1
Power breaker
0cm
)
Ov
er 1
0"(
Ensure 6"(15cm)
of space if a
drain hose is to
be used.
25c
m)
Access panel C
m)
50c
8"(
r 1'
e
Ov
D
C
B
A
Base (not provided)
(concrete or similar material)
Fasten with anchor bolts
(not provided)
(3/8" or M10, 4 locations)
Fig. 7
12
Ground
wire
(not
provided)
07-155 CMH1972-3172
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9:34 AM
Page 13
3. Installation Process
3-1. Embedding the Tubing and Wiring
G
Do not connect tubes to locations that are embedded.
G
Be sure to bind refrigerant tubing and inter-unit cables
together with vinyl tape.
G
The power cable must be obtained on-site.
(#12: Less than 85 ft.)
# ... AWG (American Wire Gauge)
G
Be sure to apply the provided labels to both ends of
the inter-unit cables to prevent miswiring.
G
Securely seal the end of embedded tubing with vinyl
tape in order to prevent dirt or moisture entry.
G
In order to prevent insulation breakdown and ground
faults, do not allow the wire ends to contact rainwater,
or be subject to dew condensation.
3-2. Use of the Flaring Method
Deburring
Many of the conventional split system air conditioners
employ the flaring method to connect refrigerant tubes
which run between indoor and outdoor units. In this
method, the copper tubes are flared at each end and
connected with flare nuts.
After
Before
3-3. Flaring Procedure with a Flare Tool
(1) Cut the copper tube to the required length with a
tube cutter. It is recommended to cut approx. 12" to
20" (30 to 50 cm) longer than the tubing length you
estimate.
Fig. 8
(2) Remove burrs at the end of the copper tube with a
tube reamer or file. This process is important and
should be done carefully to make a good flare.
(Fig. 8)
13
07-155 CMH1972-3172
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9:34 AM
Page 14
NOTE
Copper
tubing
When reaming, hold the tube end downward and be sure that
no copper scraps fall into the tube. (Fig. 9)
(3) Remove the flare nut from the unit and be sure to mount
it on the copper tube.
Reamer
(4) Make a flare at the end of copper tube with a flare tool.*
(Figs. 10 and 11)
Fig. 9
(*Use “RIGID” or equivalent.)
If the previous flare tool
(clutch-type) is used:
If the special R410A
flare tool is used:
NOTE
A good flare should have the following characteristics:
G
inside surface is glossy and smooth.
G
edge is smooth.
G
tapered sides are of uniform length.
0.0472" (1.2 mm)
0 to 0.0196"
(0 to 0.5 mm)
Adjust so that the amount of tube
protrusion is as shown in the figure.
Fig. 10
3-4. Caution before Connecting Tubes Tightly
a)
b)
c)
Be sure to apply a sealing cap or water-proof tape to
prevent dust or water from getting into the tubes before
they are used.
Flare nut
Copper
tubing
Be sure to apply refrigerant lubricant to the matching
surfaces of the flare and union before connecting them
together. This is effective for reducing gas leaks.
(Fig. 12)
Flare tool
Fig. 11
For proper connection, align the union tube and flare
tube straight with each other, then screw in the flare nut
lightly at first to obtain a smooth match. (Fig. 13)
Apply refrigerant
lubricant here and here
3-5. Tubing Connections
Fig. 12
a)
Temporary connection:
Screw in 3 – 5 rotations by hand. (Fig.14)
b)
To fasten the flare nuts, apply specified torque as:
Table 4
Tube Dia.
Tightening Torque
1/4" (6.35 mm)
Approx. 120 – 160 lbs·in (140 – 180 kgf·cm)
3/8" (9.52 mm)
Approx. 300 – 360 lbs·in (340 – 420 kgf·cm)
1/2" (12.70 mm)
Approx. 430 – 540 lbs·in (490 – 610 kgf·cm)
5/8" (15.88 mm)
Approx. 590 – 710 lbs·in (680 – 820 kgf·cm)
Union
Flare nut
Fig. 13
Service valve on
narrow tube side
Service valve on
wide tube side
Fig. 14
14
D
C
B
A
Apply the provided labels
to the indoor and outdoor
unit tubing connectors to
prevent errors in
connections.
07-155 CMH1972-3172
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9:34 AM
CAUTION
Page 15
Torque wrench
Be sure to match refrigerant
tubing and electric wiring
between indoor and outdoor
units. For more details, refer to
“Tubing Check Control” in the
Technical & Service Manual.
Spanner
Indoor unit
Outdoor unit
Fig. 15
3-6. Insulation of Refrigerant Tubing
IMPORTANT
To prevent heat loss and wet floors due to dripping of condensation, both tubes must be well insulated with a
proper insulation material.
The thickness of the insulation should be a minimum 5/16"
(8 mm). (Fig. 17)
Insulation
Fig. 16
Insulation
3-7. Taping the Tubes
CAUTION
Thickness:
min. 5/16"
(8 mm)
Min.
5/16"
(8 mm)
After a tube has been insulated,
never try to bend it into a
narrow curve, as this may
cause the tube to break or
crack.
Fig. 17
(1) At this time, the 2 refrigerant tubes (and electrical wire
if local codes permit) should be taped together with
armoring tape. The drain hose may also be included
and taped together as 1 bundle with the tubing.
Clamp
(2) Wrap the armoring tape from the bottom of the outdoor
unit to the top of the tubing where it enters the wall. As
you wrap the tubing, overlap half of each previous tape
turn. (Fig. 18)
(3) Clamp the tubing bundle to wall, using 1 clamp approx.
every 47" (120 cm).
Insulated tubes
Fig. 18
NOTE
Do not wind the armoring tape too tightly, since this will
decrease the heat insulation effect. Also, be sure the condensation drain hose splits away from the bundle and drips
clear of the unit and the tubing.
Apply putty here
3-8. Finishing the Installation
Tubing
After finishing insulating and taping over the tubing, use
sealing putty to seal off the hole in the wall to prevent rain
and draft from entering. (Fig. 19)
Fig. 19
15
07-155 CMH1972-3172
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9:34 AM
Page 16
4. Air Purging
Air and moisture remaining in the refrigerant system have
undesirable effects as indicated below. Therefore, they
must be purged completely.
G
pressure in the system rises
G
operating current rises
G
cooling efficiency drops
G
moisture in the air may freeze and block capillary tubing
G
water may lead to corrosion of parts in the refrigerant
system
I
G
Service
valve on
narrow
D
C
B
A
Service
valve on
wide tube
side
Air Purging with a Vacuum Pump
(for Test Run)
Hex wrench
In order to prevent charging errors with
A/C that uses R410A, the screw diameter
at the service valve charging port has
been changed. When recharging or performing other servicing, use the special
charging hose and manifold gauge.
Stopper
Spindle
Service port
Screw diameter: 1/2
UNF 20 threads
(1) Check that each tube (both narrow and wide tubes)
between the indoor and outdoor units have been
properly connected and all wiring for the test run has
been completed. Note that both narrow and wide tube
service valves on the outdoor unit are kept closed at
this stage.
Cap tightening torque:
170 – 215 lbs·in
(200 – 250 kgf·cm)
(Tighten by hand, then
use a wrench to turn.)
Valve core
Cap nut tightening torque:
60 – 95 lbs·in
(70 – 110 kgf·cm)
(Tighten by hand, then use a
wrench to turn approximately 30 .)
(2) Using an adjustable wrench or box wrench, remove
the valve caps from the service valve on both narrow
and wide tubes.
(3) Connect a vacuum pump and a manifold valve (with
pressure gauges) to the service port on the wide tube
service valve. (Fig. 20).
CAUTION
Vacuum
pump
Fig. 20
Perform the air purge for tubes A, B, C, and D. Use the
same procedures for all tubes.
CAUTION
Charging hose
(special for R410A)
With push-pin
In order to protect the earth’s environment, be sure to use
a vacuum pump to perform the air purge.
(Never perform an air purge by using the refrigerant gas
cylinder or other external gas, or by using the gas inside
the outdoor unit.)
CAUTION
Manifold gauge
(special for R410A)
High-pressure valve
Low-pressure
Vacuum pump
valve
adapter
Lo
Hi
(for preventing
Leave the
reverse flow)
valve open.
(special for
Open
R410A)
<Structure of service valve on wide tube side>
NOTE
External diameter of service port
R410A: 5/16"
Before using the vacuum pump
adapter, read the vacuum pump
adapter manual, and use the
adapter correctly.
Fig. 21
Be sure to use a manifold valve for
air purging. If it is not available,
use a stop valve for this purpose.
The “Hi” knob of the manifold
valve must always be kept closed.
16
G
When using a hex wrench to open the spindle, an
extremely small amount of refrigerant may leak.
This does not indicate a problem.
G
Use a hex wrench of a type to which force can be
easily applied.
07-155 CMH1972-3172
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9:34 AM
Page 17
(4) With the “Lo” knob of the manifold valve open and
high-pressure valve (“Hi”) closed completely, run
the vacuum pump. Run the pump until the pressure is –101 kPa (–76 cmHg). The operation time
for the vacuum pump varies with tubing length and
the capacity of the pump. The following table
shows the amount of time required for evacuation:
Table 5
Required time for evacuation when capacity
of 100 liter/h vacuum pump is used
20 min. or more
NOTE
The required time in the above table is calculated
based on the assumption that the ideal (or target) vacuum condition is around 10 mmHg abs.
(5) With the vacuum pump still running, close the “Lo”
knob of the manifold valve. Then stop the vacuum
pump. Fully close the low-pressure valve and stop
the vacuum pump. (Wait 1 – 2 minutes and check
that the manifold gauge pointer does not return. If
it does return, find and repair the leak, then apply
the vacuum again.)
(6) With a hex wrench, turn the valve stem on the narrow tube service valve counter-clockwise by 90
degrees (1/4 turn) for 10 seconds, and then turn
the stem clockwise to close it again.
CAUTION
Be sure to completely insert
the hex wrench before
attempting to turn the valve.
(7) With a standard screwdriver, turn the wide tube
service valve stem counterclockwise to fully open
the valve.
(8) Turn the narrow tube service valve stem counterclockwise to fully open the valve.
(9) Loosen the vacuum hose connected to the wide
tube service port slightly to release the pressure.
Then, remove the hose.
(10) Leak test all joints at the tubing (both indoor and
outdoors) with liquid soap. Bubbles indicate a leak.
Be sure to wipe off the soap with a clean cloth.
CAUTION
If a CFC gas detector is used,
use a special detector for HFC
refrigerant (such as R410 and
R134a).
17
07-155 CMH1972-3172
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Page 18
(11) Replace the flare nut on the wide tube service port and fasten the flare nut securely with an adjustable wrench or
box wrench. Next, mount the valve cap and tighten it with a torque wrench (the cap needs to be tightened with the
torque of 180 lbs·in (200 kgf·cm)). This process is very important to prevent gas from leaking from the system.
(12) Test run the air conditioner. (See page 23.)
(13) While the air conditioner is running, apply liquid soap to check for any gas leaks around the service valves or caps.
(14) If there is no leakage, stop the air conditioner.
(15) Wipe off the soap on the tubing.
This completes air purging with a vacuum pump and the air conditioner is ready for actual operation.
I
Pump Down
In order to protect the earth’s environment, be sure to perform pump-down to recover refrigerant
gas without releasing it into the atmosphere.
G
Close
When relocating or disposing of the A/C, request this service from
the dealer where the unit was purchased, or from an appropriate
agent. Perform pump-down as described below.
D
Narrow tube side
Close
C
What is pump-down?
G Pump-down refers to recovering the refrigerant gas from the refrigerant cycle at the outdoor unit. This work must be performed during cooling operation. The refrigerant gas cannot be recovered
during heating operation.
G During winter, or if the temperature sensor prevents cooling operation, perform “forced cooling operation.”
Close
B
Charging port
Close
A
Fig. 22
Pump-down procedure
(1) Fully close the spindles at the valves on the narrow tube side of
tubes A, B, C and D. (Refer to Fig. 22.)
D
C
(2) Connect the manifold gauge to the charging port at the valve on
the wide tube side of tube D. Purge the air from the charging hose.
(Refer to Fig. 23.)
(3) Perform cooling operation or forced cooling
operation.
When the pressure at the low-pressure side is 0.15 – 0.2 MPa
(0.5 – 1 kg/cm2G), fully close the spindles at the valves on the
wide tube side of tubes A, B, C, and D, and immediately stop
operation. (Refer to Fig. 23.)
In the winter, the outdoor unit may stop after 5 - 10 minutes of
operation. This is in order to protect the indoor unit heat
exchanger from freezing and does not indicate a problem.
Wide tube side
B
A
Manifold gauge
Fig. 23
Cap
(4) Disconnect the manifold gauge and the inter-unit tubes, and
attach the caps and flare nuts. At this point, pump-down is completed. (If the caps and flare nuts are not reattached, there is the
danger of gas leakage.) (Refer to Fig. 24.)
Cap
If pump-down is not possible
If the A/C cannot be operated because of a malfunction or other
cause, use a refrigerant recovery device to recover the refrigerant.
Cap
18
After disconnecting
the inter-unit tubes,
attach the flare nuts
with flare bonnets.
Cap
Fig. 24
07-155 CMH1972-3172
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9:34 AM
Page 19
5. Wiring Instructions
5-1. General Precautions on Wiring
(1) Before wiring, confirm the rated voltage of the unit as
shown on its nameplate, then carry out the wiring
closely following the wiring diagram.
(2) Provide a power outlet to be used exclusively for each
unit, with a power supply disconnect and circuit breaker for overcurrent protection provided in the exclusive
line.
(3) To prevent possible hazard due to insulation failure,
the unit must be grounded.
(4) Each wiring connection must be done tightly and in
accordance with the wiring system diagram. Wrong
wiring may cause the unit to misoperate or become
damaged.
(5) Do not allow wiring to touch the refrigerant tubing,
compressor, or any moving parts of the fan.
(6) Unauthorized changes in the internal wiring can be
very dangerous. The manufacturer will accept no
responsibility for any damage or misoperation that
occurs as a result of such unauthorized changes.
5-2. Recommended Wire Length and Diameter
Regulations on wiring diameter differ from locality to locality.
For field wiring requirements, please refer to your local electrical codes. Carefully observe these regulations when carrying out the installation.
Table 6 shows maximum wire lengths for control line and
power line and fuse or circuit capacity.
NOTE
Refer to the wiring system diagram (Fig. 25a or 25b) for the
meaning of (A), (B), and (C) in Table 6.
Refer to your local codes or in the absence of local codes
see the National Electric Code: ANSI/NFPA70.
Table 6
AWG
Model
Max. Power Line Length (ft.)
(A)
Max. Control Line Length (ft.)
(B) (C)
(#12)
(#14)
Fuse
or
Circuit Capasity
CMH1972
85 (Max.)
82 (Max.)
20 A
CMH2472
85 (Max.)
82 (Max.)
20 A
CMH3172
85 (Max.)
100 (Max.)
20 A
# ... AWG (American Wire Gauge)
19
07-155 CMH1972-3172
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Page 20
WARNING
G
G
G
G
WARNING
G
Be sure to comply with local codes on running the
wire from the indoor unit to the outdoor unit (size
of wire and wiring method, etc.).
Each wire must be firmly connected.
No wire should be allowed to touch refrigerant
tubing, the compressor, or any moving part.
Be sure to connect power wires correctly matching up numbers on terminals of the outdoor unit
and respective indoor units A – D.
G
G
G
To avoid the risk of electric shock, each air conditioner
unit must be grounded.
For the installation of a grounding device, please
observe local electrical codes.
Grounding is necessary, especially for units using
inverter circuits, in order to release charged electricity
and electrical noise caused by high tension.
Otherwise, electrical shock may occur.
Place a dedicated ground more than 7' (2 m) away from
other grounds and do not have it shared with other
electric appliances.
CAUTION
G
G
Be sure to connect the power supply line to the
outdoor unit as shown in the wiring diagram. The
indoor unit draws its power from the outdoor unit.
Do not run wiring for antenna, signal, or power
lines of television, radio, stereo, telephone, security system, or intercom any closer than 3'4" (1 m)
from the power cable and wires between the
indoor and outdoor units. Electrical noise may
affect the operation.
*
NOTE
Disconnect switch may be required by
national or local codes.
CAUTION
Always comply with national and local code
requirements.
5-3. Wiring System Diagram
4 indoor units with CMH2472, CMH3172
3 indoor units with CMH1972
*Disconnect
Grounding
line
Field supply
(B)
6
230/208V
7
230/208V
8
9
2
230/208V
(B)
(C)
Grounding
line
Terminal
(2P)
1
Terminal(12P)
230/208V
1
Grounding line
2
* Disconnect
switch
Field supply
1
2
3
(B)
230/208V
(C)
(B)
4
230/208V
3
UNIT A
(C)
5
230/208V
6
(B)
Grounding line
(C)
1
*Disconnect switch
Field supply
(Inter-unit)
(B)
power line
230/208V
3
230/208V
8
(C)
(D)
(A)
Grounding
line
230/208V
Fig. 25a
10
11
(B)
1
12
230/208V
2
3
9
(B)
*Disconnect switch
Field supply
2
7
230/208V
2
230/208V
(C)
Grounding
line
(B)
1
2
(A)
Fig. 25b
20
Grounding line
(C) (B)
(B)
Power supply
Single-phase 230/208VAC 60HZ
230/208V
3
OUTDOOR UNIT
230/208V
L1
L2
5
2
UNIT C
230/208V
230/208V
1
UNIT D
4
(B)
INDOOR UNIT
Terminal
UNIT A
(B)
230/208V
1
3
3
Field supply
Terminal
(2P)
(C)
INDOOR UNIT
Terminal
switch
(B)
Field supply
INDOOR UNIT
Terminal
*Disconnect
2
INDOOR UNIT
Terminal
3
(C)
Grounding
line
Grounding line
2
1
(A)
Power supply
Single-phase 230/208VAC 60HZ
1
230/208V
Terminal(9P)
L1
L2
INDOOR UNIT
Terminal
switch
(B)
UNIT B
*Disconnect
(B)
230/208V
2
3
OUTDOOR UNIT
UNIT C
INDOOR UNIT
Terminal
(A)
230/208V
1
INDOOR UNIT
Terminal
switch
switch
Field supply
UNIT B
* Disconnect
07-155 CMH1972-3172
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Page 21
5-4. How to Connect Wiring to the Terminal
WARNING
Loose wiring may cause the
terminal to overheat or result
in unit malfunction. A fire
hazard may also exist. Therefore, be sure all wiring is
tightly connected.
When connecting each power wire to the corresponding
terminal, follow the instructions “How to connect wiring
to the terminal” and fasten the wire securely tight with
the fixing screw of the terminal plate.
STRIP
SIZE
9/32"
(7 mm) (ACTUAL
SIZE)
How to connect wiring to the terminal
Fig. 26
a) For Indoor Unit
Strip 15/16" (25 mm)
(1) Cut the wire end with a cutting pliers, then strip the
insulation to expose the wire about 9/32" (7 mm).
See the label (Fig. 26) near the terminal plate.
(2) Using a screwdriver, loosen the terminal screw on
the terminal plate.
(3) Insert the wire and tighten the terminal screw completely using a screwdriver.
Solid wire
Loop
Insulation
Fig. 27
b) For Outdoor Unit
Strip 3/8" (10 mm)
I For solid core wiring (or F-cable)
(1) Cut the wire end with a cutting pliers, then strip the
insulation to expose the solid wire about 15/16" (25
mm). (Fig. 27)
(2) Using a screwdriver, remove the terminal screw(s)
on the terminal plate.
Stranded wire
Ring
connector
Fig. 28
(3) Using the pliers, bend the solid wire to form a loop
suitable for the terminal screw.
Twist wire ends
(4) Shape the loop wire properly, place it on the terminal plate and fix it securely with the removed terminal screw using a screwdriver.
I For stranded wiring
(1) Cut the wire end with a cutting pliers, then strip the
insulation to expose the stranded wiring about 3/8"
(10 mm) and tightly twist the wire ends. (Figs. 28
and 29)
Fig. 29
Special
washer
(2) Using a screwdriver, remove the terminal screw(s)
on the terminal plate.
Screw
Ring connector
(3) Using a ring connector fastener or pliers, securely
clamp each stripped wire end with a ring connector.
(Fig. 28)
Wire
(4) Place the ring connector wire, and replace and
tighten the removed terminal screw using a screwdriver. (Fig. 30)
Terminal plate
Wire
Fig. 30
21
Screw and
special washer
Ring
connector
07-155 CMH1972-3172
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Page 22
5-5. Wiring Instructions for the Outdoor Unit
CAUTION
G
Be sure to correctly align inter-unit cables A, B, C and D.
Outdoor unit A
Terminal board
1
Indoor unit A
A is the indoor unit with
refrigerant tubing that is
connected to service valve 1 2 3
A (top) of the outdoor unit.
2
1 2 3 4 5 6 7 8 9 10 11 12
Power:
Single-phase,
230/208VAC 60HZ
Terminal board
Inter-unit cables
#14 (not provided)
Power switch
(not provided)
Label A
Indoor unit B
B is the indoor unit with
refrigerant tubing that is
connected to service valve 1 2 3
B (top) of the outdoor unit.
Power supply
(conduit)
A
Ground
Power cable (not provided)
(#12: Less than 85 ft.)
Terminal board
Inter-unit cables
#14 (not provided)
Label B
Indoor unit C
C is the indoor unit with
refrigerant tubing that is
connected to service valve 1 2 3
C (top) of the outdoor unit.
B
Be sure to perform grounding.
Attach a ground wire to either the
outdoor unit or indoor unit.
If there is a grounding terminal
inside the room, use the grounding
screw inside the indoor unit.
Terminal board
Inter-unit cables
#14 (not provided)
Label C
Indoor unit D
D is the indoor unit with
refrigerant tubing that is
connected to service valve 1 2 3
D (top) of the outdoor unit.
C
Terminal board
Label D
Be sure to apply the provided labels to both
ends of the inter-unit cables to prevent miswiring. The units will not function if the wiring
connections are incorrect.
Inter-unit cables
#14 (not provided)
D
# ... AWG (American Wire Gauge)
Inter Unit
(conduit)
Fig. 31
G
G
G
G
G
Use a dedicated A/C circuit for power.
To make connections to the outdoor unit, remove the
inspection panel and tubing panel.
Do not bring the inter-unit cables or power cable into
contact with tubing or service valves.
Use outdoor unit cable fasteners and fasten the interunit cables at the location where the cables are doublesheathed.
Arrange the wiring so that the inter-unit cables are contained in the inspection panel and tubing panel, as
shown in Fig. 31.
22
07-155 CMH1972-3172
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9:34 AM
Page 23
Regulations on wire size differ from locality to locality. For
field wiring requirements, please refer to your local electrical codes. Make sure that the installation fully complies
with all local and national regulations.
Lock nut
Cabinet
(1) Remove access panel “C”. (Fig. 32)
(2) Connect the inter-unit and power supply line according to the drawing on the panel side.
Terminal
block
(3) Be sure to size each wire allowing approx. 4"
(10 cm) longer than the required length for wiring.
Store excess wiring inside the cabinet.
Conduit
plate
(4) When connections are completed, check that all connections are correct as shown in the wiring system
diagram on panel side.
(5) Be sure to ground the unit according to your local
codes.
Access panel “C”
Plug
6. Test Run
Inter unit
(Conduit)
Performing a test run
G
Refer to the test run procedures in the indoor unit
installation manual.
G
Perform the test run separately for each connected
indoor unit. If 2 units are operated simultaneously, it is
not possible to correctly check for errors in tubing and
wiring.
G
If the room temperature is 59°F (15°C) or below, it may
not be possible to check for tubing errors with cooling
operation. If this occurs, perform heating operation for
each unit individually, and check that warm air is
discharged from each unit. If there is cold air mixed in
with the warm air, check the tubing connections again.
Fig. 32
Access panel C
Conduit plate
Checking tubing and wiring
CAUTION
Perform the test run and check that operation is normal. If
there is an error in tubing or wiring, the refrigerant may
flow to indoor unit B when indoor unit A is operated (for
example).
Make sure there is no gap between
access panel “C” and the conduit plate.
Fig. 33
CAUTION
G
Stop operation immediately if there is an error in tubing
or wiring. Turn the power (breaker) to OFF, and check
whether the inter-unit cables are connected incorrectly,
or whether the narrow tubes A and B are connected in
reverse. Correct the connections.
G
If there is an error in tubing, pump-down must be performed. Be sure to perform pump-down. After making
corrections, again purge the air from the tubes.
Power supply
(Conduit)
23
07-155 CMH1972-3172
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9:34 AM
Page 24
7. Connecting a Home Automation Device
The HA (white) 4P terminal is located on the indoor unit PCB. If a HA device will be used,
connect it to this terminal.
8. Installation Check Sheet
The strength of the installation location is sufficient to support the A/C weight.
The indoor and outdoor units are installed level and vertically.
The power and voltage are as specified.
Inter-unit cables are securely fastened to the terminal board.
Inter-unit cables are securely fixed.
The power cord and inter-unit cables are not connected anywhere along their paths.
The ground wire is securely connected.
An air purge of the refrigerant circuit has been conducted.
A leak test of the tubing connections has been performed.
Thermal insulation has been applied to the tubing connections.
Drain connections are secure and water drains properly.
Putty has been used to close the hole in the wall.
All service valves are fully open.
Remote controller signals are being positively received.
24
APPENDIX B UNIT COMBINATION TABLES
< List of Combination Tables >
Name of Combination Table
Model No. of Outdoor Unit
Remarks
3-Room Outdoor Unit Combination Table
CMH1972
OI-852-6-4180-821-00-4
4-Room Outdoor Unit Combination Table
CMH2472
OI-852-6-4180-822-00-5
4-Room Outdoor Unit Combination Table
CMH3172
OI-852-6-4180-805-00-4
NOTE
Be sure to operate the air conditioning system only when 2 or
more indoor units have been installed. If operated with only a
single unit installed, the returning fluid to the compressor may
cause a malfunction.
A-2
Save this Combination Table!
Please be sure to hand over this sheet to the user.
3-Room Outdoor Unit Combination Table
CMH1972
<Combinations of Connectable Indoor Units>
The combinations of the indoor units listed in Table 1 and Table 2 are combinations solely of those units which can be
operated concurrently. In addition to the combinations listed in the table, other combinations of indoor units are possible
provided that the following conditions are satisfied.
Conditions:
1. At least two or more indoor units must be connected to the multi outdoor unit. It is not acceptable for only one indoor
unit to be connected.
2. The total rated cooling capacity of the indoor units to be connected must be no more than 200% of the rated cooling
capacity of the outdoor unit.
In this case, all the indoor units installed must not be operated concurrently under any
CAUTION circumstances. Otherwise, the air conditioner may not run properly and trouble may
occur.
Example: When 3 indoor units are connected
at 230V
If the following holds true
Rated cooling capacity of CMH1972 outdoor unit: C=19100 (BTU/h)
Rated cooling capacity of indoor units: K1, K2, ... (BTU/h)
Then:
C x 2 (200%) K1 + K2 + .......
19100 x 2 7500 + 11900 + 17500
38200 36900
It is therefore possible to connect 3 units with respective capacities of 7500 + 11900 + 17500.
However, since this combination is not found in the 3-room operation column of Table 1, operating all these units concurrently
may result in trouble. At a time like this, shut down at least one of the 3 indoor units to match one of the combinations
found in the 2-room operation column of Table 1.
at 208V
If the following holds true
Rated cooling capacity of CMH1972 outdoor unit: C=19100 (BTU/h)
Rated cooling capacity of indoor units: K1, K2, ... (BTU/h)
Then:
C x 2 (200%) K1 + K2 + .......
19100 x 2 7500 + 11900 + 17500
38200 36900
It is therefore possible to connect 3 units with respective capacities of 7500 + 11900 + 17500.
However, since this combination is not found in the 3-room operation column of Table 2, operating all these units concurrently
may result in trouble. At a time like this, shut down at least one of the 3 indoor units to match one of the combinations
found in the 2-room operation column of Table 2.
NOTE
Be sure to operate the air conditioning system only when 2 or more indoor units have been installed.
If operated with only a single unit installed, the returning fluid to the compressor may cause a malfunction.
Pub. OI-85264180821004
© SANYO 2008
< Combinations of operatable indoor units >
Voltage Rating : 230V 60Hz
CMH1972
(Rated cooling capacity at 230V: 19100 BTU/h)
NOTE
7500 : KMHS0772
9000 : KMHS0972
11900 : KMHS1272
17500 : KMHS1872
Table 1
Indoor Unit Combination
Single-room
Operation
2-room
Operation
3-room
Operation
7500
9000
11900
17500
7500
7500
7500
7500
9000
9000
9000
11900
11900
7500
7500
7500
7500
7500
7500
7500
7500
9000
9000
9000
11900
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
9000
11900
17500
11900
17500
7500
7500
7500
7500
9000
9000
9000
11900
9000
9000
11900
11900
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
9000
11900
17500
11900
9000
11900
11900
11900
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
7500
9000
11900
17500
15000
16500
19400
25000
18000
20900
26500
23800
29400
22500
24000
26900
32500
25500
28400
34000
31300
27000
29900
32800
35700
Room
A
7500
9000
11900
17500
7500
7485
6716
5507
8500
7627
6353
9200
7728
6000
5742
5263
4400
5603
5032
4202
4567
6367
5752
5245
6367
Room
B
Room
C
7500
9015
10684
12893
8500
10073
12347
9200
11372
6000
5742
5263
4400
6749
6062
5062
7266
6367
5752
6927
6367
6000
6916
8373
10300
6749
8006
9837
7266
6367
7597
6927
6367
Indoor Unit Capacity (BTU/h)
COOLING
Total Performance
Room
Room
)
Capacity ( Min. - Max.
A
B
)
8500
7500 ( 4700 - 8800
)
12200
9000 ( 4700 - 10900
)
14300
11900 ( 5100 - 12200
)
20400
17500 ( 5400 - 19100
)
8500
8500
15000 ( 6800 - 17400
)
8525
12275
16500 ( 6800 - 19100
)
8358
14042
17400 ( 6800 - 19100
)
7000
16800
18400 ( 7100 - 19100
)
11600
11600
17000 ( 6800 - 19100
)
10800
12600
17700 ( 7100 - 19100
)
9075
15125
18700 ( 7100 - 19100
18400 ( 6800 - 19100
)
11900
11900
)
10129
14471
19100 ( 7100 - 19100
18000 ( 8500 - 19100
)
7800
7800
)
6919
6919
18400 ( 9800 - 19100
)
6576
6578
18900 ( 9800 - 19100
)
5636
5636
19100 ( 9800 - 19100
)
6237
8981
19100 ( 9800 - 19100
19100 ( 9800 - 19100
)
5971
8598
)
5124
7379
19100 ( 9800 - 19100
)
5688
9556
19100 ( 9800 - 19100
)
8267
8267
19100 ( 9800 - 19100
)
7832
7832
19100 ( 9800 - 19100
19100 ( 9800 - 19100
)
7440
8680
)
8267
8267
19100 ( 9800 - 19100
The table lists the wall-mounted type of indoor units as representative models.
-2-
HEATING
Room
C
7800
9963
11048
13527
8981
10031
12298
9556
8267
9137
8680
8267
Capacity
8500
12200
14300
20400
17000
20800
22400
23800
23200
23400
24200
23800
24600
23400
23800
24200
24800
24200
24600
24800
24800
24800
24800
24800
24800
Total Performance
(
Min. - Max.
(
6100 - 14600
(
6100 - 16000
(
6400 - 16700
(
6800 - 24800
(
6800 - 21800
(
7100 - 24800
(
7100 - 24800
(
8100 - 24800
(
7800 - 24800
(
7800 - 24800
(
8100 - 24800
(
7800 - 24800
(
8100 - 24800
(
9200 - 24800
( 10200 - 24800
( 10900 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Voltage Rating : 208V 60Hz
CMH1972
(Rated cooling capacity at 208V: 19100 BTU/h)
NOTE
7500 : KMHS0772
9000 : KMHS0972
11900 : KMHS1272
17500 : KMHS1872
Table 2
Indoor Unit Combination
Single-room
Operation
2-room
Operation
3-room
Operation
7500
9000
11900
17500
7500
7500
7500
7500
9000
9000
9000
11900
11900
7500
7500
7500
7500
7500
7500
7500
7500
9000
9000
9000
11900
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
9000
11900
17500
11900
17500
7500
7500
7500
7500
9000
9000
9000
11900
9000
9000
11900
11900
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
9000
11900
17500
11900
9000
11900
11900
11900
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
7500
9000
11900
17500
15000
16500
19400
25000
18000
20900
26500
23800
29400
22500
24000
26900
32500
25500
28400
34000
31300
27000
29900
32800
35700
Room
A
7500
9000
11900
17500
7500
7485
6716
5507
8500
7627
6353
9200
7728
6000
5742
5263
4400
5603
5032
4202
4567
6367
5752
5245
6367
Room
B
Room
C
7500
9015
10684
12893
8500
10073
12347
9200
11372
6000
5742
5263
4400
6749
6062
5062
7266
6367
5752
6927
6367
6000
6916
8373
10300
6749
8006
9837
7266
6367
7597
6927
6367
Indoor Unit Capacity (BTU/h)
COOLING
Total Performance
Room
Room
)
Capacity ( Min. - Max.
A
B
7500 ( 4700 - 8800
)
8500
)
12200
9000 ( 4700 - 10900
)
14300
11900 ( 5100 - 12200
)
20400
17500 ( 5400 - 19100
)
8500
8500
15000 ( 6800 - 17400
)
8525
12275
16500 ( 6800 - 19100
)
8358
14042
17400 ( 6800 - 19100
)
7000
16800
18400 ( 7100 - 19100
)
11600
11600
17000 ( 6800 - 19100
)
10800
12600
17700 ( 7100 - 19100
)
9075
15125
18700 ( 7100 - 19100
18400 ( 6800 - 19100
)
11900
11900
)
10129
14471
19100 ( 7100 - 19100
)
7800
7800
18000 ( 8500 - 19100
)
6919
6919
18400 ( 9800 - 19100
)
6576
6576
18900 ( 9800 - 19100
19100 ( 9800 - 19100
)
5636
5636
)
6237
8981
19100 ( 9800 - 19100
)
5971
8598
19100 ( 9800 - 19100
19100 ( 9800 - 19100
)
5124
7379
)
5688
9556
19100 ( 9800 - 19100
)
8267
8267
19100 ( 9800 - 19100
)
7832
7832
19100 ( 9800 - 19100
19100 ( 9800 - 19100
)
7440
8680
)
8267
8267
19100 ( 9800 - 19100
The table lists the wall-mounted type of indoor units as representative models.
-3-
HEATING
Room
C
7800
9963
11048
13527
8981
10031
12298
9556
8267
9137
8680
8267
Capacity
8500
12200
14300
20400
17000
20800
22400
23800
23200
23400
24200
23800
24600
23400
23800
24200
24800
24200
24600
24800
24800
24800
24800
24800
24800
Total Performance
(
Min. - Max.
(
6100 - 14600
(
6100 - 16000
(
6400 - 16700
(
6800 - 24400
(
6800 - 21800
(
7100 - 24800
(
7100 - 24800
(
8100 - 24800
(
7800 - 24800
(
7800 - 24800
(
8100 - 24800
(
7800 - 24800
(
8100 - 24800
(
9200 - 24800
( 10200 - 24800
( 10900 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
( 11600 - 24800
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Save this Combination Table!
Please be sure to hand over this sheet to the user.
4-Room Outdoor Unit Combination Table
CMH2472
<Combinations of Connectable Indoor Units>
The combinations of the indoor units listed in Table 1 and Table 2 are combinations solely of those units which can be
operated concurrently. In addition to the combinations listed in the table, other combinations of indoor units are possible
provided that the following conditions are satisfied.
Conditions:
1. At least two or more indoor units must be connected to the multi outdoor unit. It is not acceptable for only one indoor
unit to be connected.
2. The total rated cooling capacity of the indoor units to be connected must be no more than 200% of the rated cooling
capacity of the outdoor unit.
In this case, all the indoor units installed must not be operated concurrently under any
CAUTION circumstances. Otherwise, the air conditioner may not run properly and trouble may
occur.
Example: When 4 indoor units are connected
at 230V
If the following holds true
Rated cooling capacity of CMH2472 outdoor unit: C=23200 (BTU/h)
Rated cooling capacity of indoor units: K1, K2, ... (BTU/h)
Then:
C x 2 (200%) K1 + K2 + .......
23200 x 2 7500 + 7500 + 7500 + 17500
46400 40000
It is therefore possible to connect 4 units with respective capacities of 7500 + 7500 + 7500 + 17500.
However, since this combination is not found in the 4-room operation column of Table 1, operating all these units concurrently
may result in trouble. At a time like this, shut down at least one of the 4 indoor units to match one of the combinations
found in the 3-room operation column of Table 1.
at 208V
If the following holds true
Rated cooling capacity of CMH2472 outdoor unit: C=23200 (BTU/h)
Rated cooling capacity of indoor units: K1, K2, ... (BTU/h)
Then:
C x 2 (200%) K1 + K2 + .......
23200 x 2 7500 + 7500 + 7500 + 17500
46400 40000
It is therefore possible to connect 4 units with respective capacities of 7500 + 7500 + 7500 + 17500.
However, since this combination is not found in the 4-room operation column of Table 2, operating all these units concurrently
may result in trouble. At a time like this, shut down at least one of the 4 indoor units to match one of the combinations
found in the 3-room operation column of Table 2.
NOTE
Be sure to operate the air conditioning system only when 2 or more indoor units have been installed.
If operated with only a single unit installed, the returning fluid to the compressor may cause a malfunction.
Pub. OI-85264180822005
© SANYO 2008
< Combinations of operatable indoor units >
Voltage Rating : 230V 60Hz
NOTE
CMH2472
(Rated cooling capacity at 230V: 23200 BTU/h)
7500 : KMHS0772
9000 : KMHS0972
11900 : KMHS1272
17500 : KMHS1872
24200 : KMHS2472
Table 1
Indoor Unit Combination
Single-room
Operation
2-room
Operation
3-room
Operation
7500
9000
11900
17500
24200
7500
7500
7500
7500
7500
9000
9000
9000
9000
11900
11900
11900
17500
7500
7500
7500
7500
7500
7500
7500
7500
7500
9000
9000
9000
9000
9000
11900
11900
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
24200
9000
11900
17500
24200
11900
17500
24200
17500
7500
7500
7500
7500
9000
9000
9000
11900
11900
9000
9000
9000
11900
11900
11900
11900
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
9000
11900
17500
11900
17500
9000
11900
17500
11900
17500
11900
17500
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
7500
9000
11900
17500
24200
15000
16500
19400
25000
31700
18000
20900
26500
33200
23800
29400
36100
35000
22500
24000
26900
32500
25500
28400
34000
31300
36900
27000
29900
35500
32800
38400
35700
41300
Room
A
7500
9000
11900
17500
23200
7500
7485
7488
6705
5488
9000
8618
7746
6306
11200
9387
7660
11600
7333
6990
6405
5345
6688
6113
5104
5548
4704
7733
6986
5883
6371
5441
7733
6683
Room
B
Room
C
7500
9015
11912
15695
17712
9000
11382
15054
16894
11200
13813
15540
11600
7333
6990
6405
5345
8056
7363
6148
8826
7484
7733
6986
5883
8415
7186
7733
6683
7333
8420
10190
12511
8056
9725
11948
8826
11012
7733
9227
11433
8415
10573
7733
9834
Indoor Unit Capacity (BTU/h)
COOLING
Total Performance
Room
Room
Room
)
A
B
D
Capacity ( Min. - Max.
8500
7500 ( 4700 - 8800 )
9000 ( 4700 - 10900
)
12200
11900 ( 5100 - 12200
)
14300
17500 ( 5400 - 19700
)
20400
23200 ( 5400 - 23200
)
27200
15000 ( 6800 - 17400
)
8500
8500
16500 ( 6800 - 19700
)
8525
12275
19400 ( 6800 - 22800
)
8507
14293
22400 ( 7100 - 23200
)
8294
19906
23200 ( 7100 - 23200
)
6636
22564
18000 ( 6800 - 21400
)
12200
12200
20000 ( 6800 - 23200
)
11908
13892
22800 ( 7100 - 23200
)
10725
17875
23200 ( 7100 - 23200
)
8688
20512
22400 ( 6800 - 23200
)
13600
13600
23200 ( 7100 - 23200
)
11941
17059
23200 ( 7100 - 23200
)
9657
19543
23200 ( 7100 - 23200
)
14600
14600
)
8467
8467
22000 ( 8500 - 23200
22400 ( 9800 - 23200
)
7907
7907
23000 ( 9800 - 23200
)
7663
7663
23200 ( 9800 - 23200
)
6636
6636
22800 ( 9800 - 23200
)
7371
10614
23200 ( 9800 - 23200
)
7039
10136
23200 ( 9800 - 23200
)
6033
8688
23200 ( 9800 - 23200
)
6697
11251
23200 ( 9800 - 23200
)
5748
9657
23200 ( 9800 - 23200
)
9733
9733
23200 ( 9800 - 23200
)
9221
9221
23200 ( 9800 - 23200
)
7964
7964
23200 ( 9800 - 23200
)
8760
10220
23200 ( 9800 - 23200
)
7617
8887
23200 ( 9800 - 23200
)
9733
9733
23200 ( 9800 - 23200
)
8517
8517
Room
C
8467
11386
12874
15927
10614
11825
14479
11251
13795
9733
10758
13273
10220
12696
9733
12167
HEATING
Total Performance
Room
D
Capacity (
Min. - Max.
8500 (
6100 - 14600
12200 (
6100 - 16000
14300 (
6400 - 16700
20400 (
6800 - 26200
27200 (
6800 - 27200
17000 (
6800 - 21800
20800 (
7100 - 25400
22800 (
7100 - 28200
28200 (
8100 - 29200
29200 (
8100 - 29200
24400 (
7800 - 29000
25800 (
7800 - 29000
28600 (
8100 - 29200
29200 (
8100 - 29200
27200 (
7800 - 29000
29000 (
8100 - 29200
29200 (
8100 - 29200
29200 (
8100 - 29200
25400 (
9200 - 29000
27200 ( 10200 - 29200
28200 ( 10900 - 29200
29200 ( 11600 - 29200
28600 ( 11600 - 29200
29000 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
IMPORTANT! (Concurrent operation of 4 indoor units prohibited)
4-room
Operation
This multi outdoor unit allows up to four indoor units to be connected.
However, all four indoor units must not be operated concurrently.
Otherwise, the air conditioner may not run properly.
Up to three indoor units may be operated concurrently.
The table lists the wall-mounted type of indoor units as representative models.
-2-
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Voltage Rating : 208V 60Hz
NOTE
CMH2472
(Rated cooling capacity at 208V: 23200 BTU/h)
7500 : KMHS0772
9000 : KMHS0972
11900 : KMHS1272
17500 : KMHS1872
24200 : KMHS2472
Table 2
Indoor Unit Combination
Single-room
Operation
2-room
Operation
3-room
Operation
7500
9000
11900
17500
24200
7500
7500
7500
7500
7500
9000
9000
9000
9000
11900
11900
11900
17500
7500
7500
7500
7500
7500
7500
7500
7500
7500
9000
9000
9000
9000
9000
11900
11900
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
24200
9000
11900
17500
24200
11900
17500
24200
17500
7500
7500
7500
7500
9000
9000
9000
11900
11900
9000
9000
9000
11900
11900
11900
11900
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
9000
11900
17500
11900
17500
9000
11900
17500
11900
17500
11900
17500
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
7500
9000
11900
17500
24200
15000
16500
19400
25000
31700
18000
20900
26500
33200
23800
29400
36100
35000
22500
24000
26900
32500
25500
28400
34000
31300
36900
27000
29900
35500
32800
38400
35700
41300
Room
A
7500
9000
11900
17500
22400
7500
7485
7488
6705
5488
9000
8618
7746
6306
11200
9387
7660
11600
7333
6990
6405
5345
6688
6113
5104
5548
4704
7733
6986
5883
6371
5441
7733
6683
Room
B
Room
C
7500
9015
11912
15695
17712
9000
11382
15054
16894
11200
13813
15540
11600
7333
6990
6405
5345
8056
7363
6148
8826
7484
7733
6986
5883
8415
7186
7733
6683
7333
8420
10190
12511
8056
9725
11948
8826
11012
7733
9227
11433
8415
10573
7733
9834
Indoor Unit Capacity (BTU/h)
COOLING
Total Performance
Room
Room
Room
)
A
B
D
Capacity ( Min. - Max.
8500
7500 ( 4700 - 8800 )
9000 ( 4700 - 10900
)
12200
11900 ( 5100 - 12200
)
14300
17500 ( 5400 - 19700
)
20400
22400 ( 5400 - 22400
)
25800
15000 ( 6800 - 17400
)
8500
8500
16500 ( 6800 - 19700
)
8525
12275
19400 ( 6800 - 22800
)
8507
14293
22400 ( 7100 - 23200
)
8294
19906
23200 ( 7100 - 23200
)
6636
22564
18000 ( 6800 - 21400
)
12200
12200
20000 ( 6800 - 23200
)
11908
13892
22800 ( 7100 - 23200
)
10725
17875
23200 ( 7100 - 23200
)
8688
20512
22400 ( 6800 - 23200
)
13600
13600
23200 ( 7100 - 23200
)
11941
17059
23200 ( 7100 - 23200
)
9657
19543
23200 ( 7100 - 23200
)
14600
14600
)
8467
8467
22000 ( 8500 - 23200
22400 ( 9800 - 23200
)
7907
7907
23000 ( 9800 - 23200
)
7663
7663
23200 ( 9800 - 23200
)
6636
6636
22800 ( 9800 - 23200
)
7371
10614
23200 ( 9800 - 23200
)
7039
10136
23200 ( 9800 - 23200
)
6033
8688
23200 ( 9800 - 23200
)
6697
11251
23200 ( 9800 - 23200
)
5748
9657
23200 ( 9800 - 23200
)
9733
9733
23200 ( 9800 - 23200
)
9221
9221
23200 ( 9800 - 23200
)
7964
7964
23200 ( 9800 - 23200
)
8760
10220
23200 ( 9800 - 23200
)
7617
8887
23200 ( 9800 - 23200
)
9733
9733
23200 ( 9800 - 23200
)
8517
8517
Room
C
8467
11386
12874
15927
10614
11825
14479
11251
13795
9733
10758
13273
10220
12696
9733
12167
HEATING
Total Performance
Room
D
Capacity (
Min. - Max.
8500 (
6100 - 14600
12200 (
6100 - 16000
14300 (
6400 - 16700
20400 (
6800 - 24400
25800 (
6800 - 25800
17000 (
6800 - 21800
20800 (
7100 - 25400
22800 (
7100 - 28200
28200 (
8100 - 29200
29200 (
8100 - 29200
24400 (
7800 - 28200
25800 (
7800 - 29000
28600 (
8100 - 29200
29200 (
8100 - 29200
27200 (
7800 - 28600
29000 (
8100 - 29200
29200 (
8100 - 29200
29200 (
8100 - 29200
25400 (
9200 - 29000
27200 ( 10200 - 29200
28200 ( 10900 - 29200
29200 ( 11600 - 29200
28600 ( 11600 - 29200
29000 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
29200 ( 11600 - 29200
IMPORTANT! (Concurrent operation of 4 indoor units prohibited)
4-room
Operation
This multi outdoor unit allows up to four indoor units to be connected.
However, all four indoor units must not be operated concurrently.
Otherwise, the air conditioner may not run properly.
Up to three indoor units may be operated concurrently.
The table lists the wall-mounted type of indoor units as representative models.
-3-
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Save this Combination Table!
Please be sure to hand over this sheet to the user.
4-Room Outdoor Unit Combination Table
CMH3172
<Combinations of Connectable Indoor Units>
The combinations of the indoor units listed in Table 1 and Table 2 are combinations solely of those units which can be
operated concurrently. In addition to the combinations listed in the table, other combinations of indoor units are possible
provided that the following conditions are satisfied.
Conditions:
1. At least two or more indoor units must be connected to the multi outdoor unit. It is not acceptable for only one indoor
unit to be connected.
2. The total rated cooling capacity of the indoor units to be connected must be no more than 200% of the rated cooling
capacity of the outdoor unit.
In this case, all the indoor units installed must not be operated concurrently under any
CAUTION circumstances. Otherwise, the air conditioner may not run properly and trouble may
occur.
Example: When 4 indoor units are connected
at 230V
If the following holds true
Rated cooling capacity of CMH3172 outdoor unit: C=30600 (BTU/h)
Rated cooling capacity of indoor units: K1, K2, ... (BTU/h)
Then:
C x 2 (200%) K1 + K2 + .......
30600 x 2 7500 + 7500 + 11900 + 24200
61200 51100
It is therefore possible to connect 4 units with respective capacities of 7500 + 7500 + 11900 + 24200.
However, since this combination is not found in the 4-room operation column of Table 1, operating all these units concurrently
may result in trouble. At a time like this, shut down at least one of the 4 indoor units to match one of the combinations
found in the 3-room operation column of Table 1.
at 208V
If the following holds true
Rated cooling capacity of CMH3172 outdoor unit: C=28600 (BTU/h)
Rated cooling capacity of indoor units: K1, K2, ... (BTU/h)
Then:
C x 2 (200%) K1 + K2 + .......
28600 x 2 7500 + 7500 + 11900 + 24200
57200 51100
It is therefore possible to connect 4 units with respective capacities of 7500 + 7500 + 11900 + 24200.
However, since this combination is not found in the 4-room operation column of Table 2, operating all these units concurrently
may result in trouble. At a time like this, shut down at least one of the 4 indoor units to match one of the combinations
found in the 3-room operation column of Table 2.
NOTE
Be sure to operate the air conditioning system only when 2 or more indoor units have been installed.
If operated with only a single unit installed, the returning fluid to the compressor may cause a malfunction.
Pub. OI-85264180805004
© SANYO 2008
< Combinations of operatable indoor units >
Voltage Rating : 230V 60Hz
NOTE
CMH3172
(Rated cooling capacity at 230V: 30600 BTU/h)
7500 : KMHS0772
9000 : KMHS0972
11900 : KMHS1272
17500 : KMHS1872
24200 : KMHS2472
Table 1
Indoor Unit Combination
Single-room
Operation
2-room
Operation
3-room
Operation
4-room
Operation
7500
9000
11900
17500
24200
7500
7500
7500
7500
7500
9000
9000
9000
9000
11900
11900
11900
17500
17500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
9000
9000
9000
9000
9000
9000
9000
9000
11900
11900
11900
11900
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
9000
9000
9000
9000
9000
9000
11900
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
24200
9000
11900
17500
24200
11900
17500
24200
17500
24200
7500
7500
7500
7500
7500
9000
9000
9000
9000
11900
11900
11900
17500
17500
9000
9000
9000
9000
11900
11900
11900
17500
11900
11900
11900
17500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
9000
9000
9000
9000
9000
11900
11900
9000
9000
9000
9000
9000
11900
11900
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
24200
9000
11900
17500
24200
11900
17500
24200
17500
24200
9000
11900
17500
24200
11900
17500
24200
17500
11900
17500
24200
17500
7500
7500
7500
7500
7500
9000
9000
9000
9000
11900
11900
17500
9000
9000
9000
11900
11900
11900
11900
9000
9000
9000
11900
11900
11900
11900
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
24200
9000
11900
17500
24200
11900
17500
17500
9000
11900
17500
11900
17500
11900
17500
9000
11900
17500
11900
17500
11900
11900
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
7500
9000
11900
17500
24200
15000
16500
19400
25000
31700
18000
20900
26500
33200
23800
29400
36100
35000
41700
22500
24000
26900
32500
39200
25500
28400
34000
40700
31300
36900
43600
42500
49200
27000
29900
35500
42200
32800
38400
45100
44000
35700
41300
48000
46900
30000
31500
34400
40000
46700
33000
35900
41500
48200
38800
44400
50000
34500
37400
43000
40300
45900
43200
48800
36000
38900
44500
41800
47400
44700
47600
Room
A
7500
9000
11900
17500
24200
7500
7500
7500
7320
6625
9000
8957
8626
7861
11900
10848
9625
14500
12296
7467
7500
7082
6600
5587
7294
6972
6309
5381
6613
5935
5023
5153
4451
8533
8187
7352
6185
7848
6844
5827
5973
9267
8414
7239
7409
6800
6667
6235
5738
4914
6409
6058
5530
4761
5915
5169
4590
6217
6136
5337
5695
5000
5313
4703
7650
7080
6189
6589
5810
6161
7650
Room
B
Room
C
7500
9000
11900
17080
21375
9000
11843
16774
21139
11900
15952
19575
14500
17004
7467
7500
7082
6600
5587
8753
8366
7571
6457
10493
9417
7970
12024
10386
8533
8187
7352
6185
10376
9049
7705
11614
9267
8414
7239
10896
6800
6667
6235
5738
4914
6409
6058
5530
4761
5915
5169
4590
7461
7364
6405
6834
6000
8429
7462
7650
7080
6189
6589
5810
8146
7650
7467
9000
11236
15400
18027
8753
11062
14721
17362
10493
13848
16207
12024
14363
8533
10825
14296
16630
10376
13307
15668
11614
9267
12373
14722
10896
6800
6667
6235
5738
4914
7691
7270
6636
5714
9385
8201
10710
7461
7364
6405
9036
7933
8429
7462
7650
7080
6189
8711
7682
8146
7650
Indoor Unit Capacity (BTU/h)
COOLING
Total Performance
Room
Room
Room
A
B
D
Capacity ( Min. - Max. )
7500 ( 4000 - 8800 )
8500
9000 ( 4400 - 10900 ) 12200
11900 ( 4700 - 12200 ) 14300
17500 ( 5100 - 19700 ) 20400
24200 ( 5400 - 25200 ) 29000
8500
8500
15000 ( 4400 - 17400 )
8541 12259
16500 ( 5100 - 19700 )
8500 14300
19400 ( 5800 - 22800 )
8529 20471
24400 ( 7500 - 26200 )
6800 23200
28000 ( 7800 - 30000 )
18000 ( 5800 - 22000 ) 12200 12200
20800 ( 6400 - 25200 ) 11878 13922
25400 ( 7800 - 29000 ) 11002 18398
29000 ( 7800 - 30000 )
9061 21539
23800 ( 7500 - 28600 ) 13600 13600
26800 ( 8800 - 30000 ) 12281 17519
29200 ( 8800 - 30000 ) 10238 20762
29000 ( 8800 - 30000 ) 15300 15300
29300 ( 9200 - 30000 ) 13215 18785
22400 ( 6800 - 26200 )
8467
8467
8442
8442
24000 ( 7500 - 26600 )
7930
7930
25400 ( 8100 - 26800 )
6818
6818
28600 ( 9200 - 30600 )
5802
5802
29200 ( 9800 - 30600 )
7596 10902
24800 ( 7800 - 27200 )
7237 10387
26400 ( 8800 - 27600 )
6328
9083
28600 ( 9800 - 30600 )
5473
7855
29200 ( 9800 - 30600 )
27600 ( 9200 - 28600 )
6873 11563
6100 10262
29200 ( 9800 - 30600 )
5251
8834
29200 ( 9800 - 30600 )
5517 13241
29200 ( 9800 - 30600 )
4698 11275
29200 ( 9800 - 30600 )
25600 ( 8500 - 27200 ) 10000 10000
27200 ( 9200 - 28200 )
9520
9520
8496
8496
29000 ( 9800 - 30600 )
7311
7311
29000 ( 9800 - 30600 )
9150 10725
28600 ( 9200 - 29200 )
8220
9635
29200 ( 9800 - 30600 )
7034
8245
29200 ( 9800 - 30600 )
7366 12317
29200 ( 9800 - 30600 )
27800 ( 9800 - 29000 ) 10333 10333
9280
9280
29200 ( 9800 - 30600 )
7944
7944
29200 ( 9800 - 30600 )
29200 ( 9800 - 30600 )
8305 11848
6800
27200 ( 9800 - 28200 )
7400
7400
6764
6764
8000
28000 ( 9800 - 28200 )
6492
6492
9894
28600 ( 9800 - 28600 )
5815
5815
13388
30600 ( 9800 - 30600 )
4991
4991
15857
30600 ( 9800 - 30600 )
6324
6324
7691
28200 ( 9800 - 28200 )
6097
6097
9613
29000 ( 9800 - 29000 )
12904
30600 ( 9800 - 30600 )
5484
5484
4674
4674
15363
30600 ( 9800 - 30600 )
9385
30600 ( 9800 - 30600 )
5816
5816
5261
5261
12061
30600 ( 9800 - 30600 )
4706
4706
10710
30600 ( 9800 - 30600 )
5880
8440
7461
28600 ( 9800 - 28600 )
9736
30600 ( 9800 - 30600 )
5691
8168
5103
7325
12453
30600 ( 9800 - 30600 )
5517
7919
9036
30600 ( 9800 - 30600 )
11667
30600 ( 9800 - 30600 )
4910
7047
5292
8903
8429
30600 ( 9800 - 30600 )
4730
7958
10973
30600 ( 9800 - 30600 )
8000
8000
7650
30600 ( 9800 - 30600 )
7670
7670
9361
30600 ( 9800 - 30600 )
6849
6849
12034
30600 ( 9800 - 30600 )
7366
7366
8711
30600 ( 9800 - 30600 )
6606
6606
11297
30600 ( 9800 - 30600 )
7085
8305
8146
30600 ( 9800 - 30600 )
7650
30600 ( 9800 - 30600 )
8000
8000
The table lists the wall-mounted type of indoor units as representative models.
-2-
Room
C
8467
12116
13341
16364
19796
10902
12175
15188
18672
11563
14639
17915
13241
16028
10000
11159
14207
17378
10725
13745
16721
12317
10333
13239
16111
11848
7400
6764
6492
5815
4991
9076
8750
7871
6708
9784
8851
11294
8440
8168
7325
9282
8260
8903
7958
8000
7670
6849
8634
7743
8305
8000
HEATING
Total Performance
Room
D
Capacity ( Min. Max.
8500 ( 6100 - 14600
12200 ( 6100 - 16000
14300 ( 6400 - 17400
20400 ( 6800 - 26600
29000 ( 6800 - 30000
17000 ( 6800 - 21800
20800 ( 7100 - 25400
22800 ( 7800 - 28200
29000 ( 10200 - 32000
30000 ( 10200 - 32000
24400 ( 8100 - 29000
25800 ( 8800 - 29000
29400 ( 11200 - 32000
30600 ( 11200 - 32000
27200 ( 9800 - 29000
29800 ( 11600 - 32000
31000 ( 11600 - 32000
30600 ( 11600 - 32000
32000 ( 11600 - 32000
25400 ( 9200 - 30600
29000 ( 10200 - 31200
29200 ( 10900 - 32000
30000 ( 11600 - 32000
31400 ( 11600 - 32000
29400 ( 11200 - 31600
29800 ( 11600 - 32000
30600 ( 11600 - 32000
32000 ( 11600 - 32000
30000 ( 11600 - 32000
31000 ( 11600 - 32000
32000 ( 11600 - 32000
32000 ( 11600 - 32000
32000 ( 11600 - 32000
30000 ( 11600 - 32000
30200 ( 11600 - 32000
31200 ( 11600 - 32000
32000 ( 11600 - 32000
30600 ( 11600 - 32000
31600 ( 11600 - 32000
32000 ( 11600 - 32000
32000 ( 11600 - 32000
31000 ( 11600 - 32000
31800 ( 11600 - 32000
32000 ( 11600 - 32000
32000 ( 11600 - 32000
7400
29600 ( 11600 - 32000
9708
30000 ( 11600 - 32000
10923
30400 ( 11600 - 32000
13956
31400 ( 11600 - 32000
17028
32000 ( 11600 - 32000
9076
30800 ( 11600 - 32000
10257
31200 ( 11600 - 32000
13161
32000 ( 11600 - 32000
15945
32000 ( 11600 - 32000
9784
31200 ( 11600 - 32000
12627
32000 ( 11600 - 32000
11294
32000 ( 11600 - 32000
8440
31200 ( 11600 - 32000
9574
31600 ( 11600 - 32000
12248
32000 ( 11600 - 32000
9282
32000 ( 11600 - 32000
11783
32000 ( 11600 - 32000
8903
32000 ( 11600 - 32000
11353
32000 ( 11600 - 32000
8000
32000 ( 11600 - 32000
8990
32000 ( 11600 - 32000
11453
32000 ( 11600 - 32000
8634
32000 ( 11600 - 32000
11046
32000 ( 11600 - 32000
8305
32000 ( 11600 - 32000
8000
32000 ( 11600 - 32000
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Voltage Rating : 208V 60Hz
NOTE
CMH3172
(Rated cooling capacity at 208V: 28600 BTU/h)
7500 : KMHS0772
9000 : KMHS0972
11900 : KMHS1272
17500 : KMHS1872
24200 : KMHS2472
Table 2
Indoor Unit Combination
Single-room
Operation
2-room
Operation
3-room
Operation
4-room
Operation
7500
9000
11900
17500
24200
7500
7500
7500
7500
7500
9000
9000
9000
9000
11900
11900
11900
17500
17500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
9000
9000
9000
9000
9000
9000
9000
9000
11900
11900
11900
11900
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
9000
9000
9000
9000
9000
9000
11900
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
24200
9000
11900
17500
24200
11900
17500
24200
17500
24200
7500
7500
7500
7500
7500
9000
9000
9000
9000
11900
11900
11900
17500
17500
9000
9000
9000
9000
11900
11900
11900
17500
11900
11900
11900
17500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
7500
9000
9000
9000
9000
9000
11900
11900
9000
9000
9000
9000
9000
11900
11900
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
24200
9000
11900
17500
24200
11900
17500
24200
17500
24200
9000
11900
17500
24200
11900
17500
24200
17500
11900
17500
24200
17500
7500
7500
7500
7500
7500
9000
9000
9000
9000
11900
11900
17500
9000
9000
9000
11900
11900
11900
11900
9000
9000
9000
11900
11900
11900
11900
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
7500
9000
11900
17500
24200
9000
11900
17500
24200
11900
17500
17500
9000
11900
17500
11900
17500
11900
17500
9000
11900
17500
11900
17500
11900
11900
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
7500
9000
11900
17500
24200
15000
16500
19400
25000
31700
18000
20900
26500
33200
23800
29400
36100
35000
41700
22500
24000
26900
32500
39200
25500
28400
34000
40700
31300
36900
43600
42500
49200
27000
29900
35500
42200
32800
38400
45100
44000
35700
41300
48000
46900
30000
31500
34400
40000
46700
33000
35900
41500
48200
38800
44400
50000
34500
37400
43000
40300
45900
43200
48800
36000
38900
44500
41800
47400
44700
47600
Room
A
7500
9000
11900
17500
24200
7500
7500
7500
7320
6625
9000
8957
8626
7373
11900
10848
9098
13600
11583
7467
7500
6747
6185
5281
7118
6444
5912
5086
5799
5610
4748
4871
4207
8267
7284
6439
5886
6805
6469
5508
5645
8467
7953
6843
7003
6300
6048
5625
5363
4593
5864
5557
5169
4450
5528
4831
4290
5696
5735
4988
5323
4673
4965
4395
7150
6617
5784
6158
5430
5758
7150
Room
B
Room
C
7500
9000
11900
17080
21375
9000
11843
16774
19827
11900
15952
18502
13600
16017
7467
7500
6747
6185
5281
8541
7732
7094
6103
9201
8901
7533
11365
9817
8267
7284
6439
5886
8998
8553
7282
10977
8467
7953
6843
10299
6300
6048
5625
5363
4593
5864
5557
5169
4450
5528
4831
4290
6835
6882
5986
6387
5608
7878
6974
7150
6617
5784
6158
5430
7614
7150
7467
9000
10706
14431
17039
8541
10224
13794
16411
9201
13089
15319
11365
13576
8267
9631
12521
15827
8998
12578
14810
10977
8467
11695
13915
10299
6300
6048
5625
5363
4593
7036
6669
6202
5340
8772
7665
10010
6835
6882
5986
8445
7415
7878
6974
7150
6617
5784
8142
7180
7614
7150
Indoor Unit Capacity (BTU/h)
COOLING
Total Performance
Room
Room Room
A
B
D
Capacity ( Min. - Max. )
8500
7500 ( 4000 - 8800 )
9000 ( 4400 - 10900 ) 12200
11900 ( 4700 - 12200 ) 14300
17500 ( 5100 - 19700 ) 20400
24200 ( 5400 - 24800 ) 29000
8500
8500
15000 ( 4400 - 17400 )
8541 12259
16500 ( 5100 - 19700 )
8500 14300
19400 ( 5800 - 22800 )
8529 20471
24400 ( 7500 - 26200 )
6800 23200
28000 ( 7800 - 27600 )
18000 ( 5800 - 22000 ) 12200 12200
20800 ( 6400 - 25200 ) 11878 13922
25400 ( 7800 - 27600 ) 11002 18398
27200 ( 7800 - 27600 )
9061 21539
23800 ( 7500 - 27600 ) 13600 13600
26800 ( 8800 - 27600 ) 12281 17519
27600 ( 8800 - 27600 ) 10238 20762
27200 ( 8800 - 27600 ) 15300 15300
27600 ( 9200 - 27600 ) 13215 18785
22400 ( 6800 - 24800 )
8467
8467
8442
8442
24000 ( 7500 - 25200 )
7930
7930
24200 ( 8100 - 25400 )
6818
6818
26800 ( 9200 - 27600 )
5802
5802
27600 ( 9800 - 27600 )
7596 10902
24200 ( 7800 - 25400 )
7237 10387
24400 ( 8800 - 25800 )
26800 ( 9800 - 27600 )
6328
9083
27600 ( 9800 - 27600 )
5473
7855
6873 11563
24200 ( 9200 - 27600 )
27600 ( 9800 - 27600 )
6100 10262
27600 ( 9800 - 27600 )
5251
8834
5517 13241
27600 ( 9800 - 27600 )
4698 11275
27600 ( 9800 - 27600 )
24800 ( 8500 - 26200 ) 10000 10000
9520
9520
24200 ( 9200 - 25400 )
8496
8496
25400 ( 9800 - 27600 )
7311
7311
27600 ( 9800 - 27600 )
9150 10725
24800 ( 9200 - 26200 )
8220
9635
27600 ( 9800 - 27600 )
7034
8245
27600 ( 9800 - 27600 )
7366 12317
27600 ( 9800 - 27600 )
25400 ( 9800 - 27600 ) 10333 10333
9280
9280
27600 ( 9800 - 27600 )
7944
7944
27600 ( 9800 - 27600 )
27600 ( 9800 - 27600 )
8305 11848
6300
25200 ( 9800 - 25200 )
7400
7400
6764
6764
7257
25400 ( 9800 - 25400 )
6492
6492
8925
25800 ( 9800 - 25800 )
5815
5815
12513
28600 ( 9800 - 28600 )
14821
28600 ( 9800 - 28600 )
4991
4991
7036
25800 ( 9800 - 25800 )
6324
6324
6097
6097
8817
26600 ( 9800 - 26600 )
12060
28600 ( 9800 - 28600 )
5484
5484
4674
4674
14359
28600 ( 9800 - 28600 )
8772
28600 ( 9800 - 28600 )
5816
5816
5261
5261
11273
28600 ( 9800 - 28600 )
4706
4706
10010
28600 ( 9800 - 28600 )
5880
8440
6835
26200 ( 9800 - 26200 )
9100
28600 ( 9800 - 28600 )
5691
8168
5103
7325
11640
28600 ( 9800 - 28600 )
8445
28600 ( 9800 - 28600 )
5517
7919
4910
7047
10904
28600 ( 9800 - 28600 )
5292
8903
7878
28600 ( 9800 - 28600 )
4730
7958
10256
28600 ( 9800 - 28600 )
7150
28600 ( 9800 - 28600 )
8000
8000
7670
7670
8749
28600 ( 9800 - 28600 )
6849
6849
11247
28600 ( 9800 - 28600 )
7366
7366
8142
28600 ( 9800 - 28600 )
6606
6606
10559
28600 ( 9800 - 28600 )
7614
28600 ( 9800 - 28600 )
7085
8305
7150
28600 ( 9800 - 28600 )
8000
8000
The table lists the wall-mounted type of indoor units as representative models.
-3-
Room
C
8467
12116
13341
16364
19796
10902
12175
15188
18672
11563
14639
17915
13241
16028
10000
11159
14207
17378
10725
13745
16721
12317
10333
13239
16111
11848
7400
6764
6492
5815
4991
9076
8750
7871
6708
9784
8851
11294
8440
8168
7325
9282
8260
8903
7958
8000
7670
6849
8634
7743
8305
8000
HEATING
Total Performance
Room
D
Capacity ( Min. - Max.
8500 ( 6100 - 14600
12200 ( 6100 - 16000
14300 ( 6400 - 17400
20400 ( 6800 - 26600
29000 ( 6800 - 30000
17000 ( 6800 - 21800
20800 ( 7100 - 25400
22800 ( 7800 - 28200
29000 ( 10200 - 32000
30000 ( 10200 - 32000
24400 ( 8100 - 29000
25800 ( 8800 - 29000
29400 ( 11200 - 32000
30600 ( 11200 - 32000
27200 ( 9800 - 29000
29800 ( 11600 - 32000
31000 ( 11600 - 32000
30600 ( 11600 - 32000
32000 ( 11600 - 32000
25400 ( 9200 - 30600
29000 ( 10200 - 31200
29200 ( 10900 - 32000
30000 ( 11600 - 32000
31400 ( 11600 - 32000
29400 ( 11200 - 31600
29800 ( 11600 - 32000
30600 ( 11600 - 32000
32000 ( 11600 - 32000
30000 ( 11600 - 32000
31000 ( 11600 - 32000
32000 ( 11600 - 32000
32000 ( 11600 - 32000
32000 ( 11600 - 32000
30000 ( 11600 - 32000
30200 ( 11600 - 32000
31200 ( 11600 - 32000
32000 ( 11600 - 32000
30600 ( 11600 - 32000
31600 ( 11600 - 32000
32000 ( 11600 - 32000
32000 ( 11600 - 32000
31000 ( 11600 - 32000
31800 ( 11600 - 32000
32000 ( 11600 - 32000
32000 ( 11600 - 32000
7400
29600 ( 11600 - 32000
9708
30000 ( 11600 - 32000
10923
30400 ( 11600 - 32000
13956
31400 ( 11600 - 32000
17028
32000 ( 11600 - 32000
9076
30800 ( 11600 - 32000
10257
31200 ( 11600 - 32000
13161
32000 ( 11600 - 32000
15945
32000 ( 11600 - 32000
9784
31200 ( 11600 - 32000
12627
32000 ( 11600 - 32000
11294
32000 ( 11600 - 32000
8440
31200 ( 11600 - 32000
9574
31600 ( 11600 - 32000
12248
32000 ( 11600 - 32000
9282
32000 ( 11600 - 32000
11783
32000 ( 11600 - 32000
8903
32000 ( 11600 - 32000
11353
32000 ( 11600 - 32000
8000
32000 ( 11600 - 32000
8990
32000 ( 11600 - 32000
11453
32000 ( 11600 - 32000
8634
32000 ( 11600 - 32000
11046
32000 ( 11600 - 32000
8305
32000 ( 11600 - 32000
8000
32000 ( 11600 - 32000
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SANYO Commercial Solutions
A Division of SANYO North America Corporation
Cornerstone Business Park, 1062 Thorndale Avenue,
Bensenville, IL 60106, U.S.A.
Sanyo Canada Inc.
1-300 Applewood Crescent, Concord, Ontario L4K 5C7, CANADA
Jan. / 2008 (T)