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Technical
Information
40" 95% Gas Furnaces
GUVA___AX__
Model and Manufacturing
numbers listed in this manual.
MODEL
M/N
GUVA045AX30 P1228301F
GUVA070AX40 P1228303F
GUVA090AX50 P1228305F
GUVA115AX50 P1228306F
GUVA045AX30 P1232501F
GUVA070AX40 P1232503F
• Refer to Service Manual RS6600001 Rev. 1 for installation, operation, and troubleshooting information.
GUVA090AX50 P1232505F
GUVA115AX50 P1232506F
• All safety information must be followed as provided in
the Service Manual.
• Refer to the appropriate Parts Catalog for part number
information.
D E S IG N
This manual replaces RT6612002 Rev. 0 April 2000.
CE RT I F I E D
CE
REV. 1 - Corrections made to manual, no new models added.
R TI FIE D
Heating&Air Conditioning
®
Built Better Than It Has To Be
This manual is to be used by qualified HVAC technicians only. Amana
does not assume any responsibility for property damage or personal injury
due to improper service procedures performed by an unqualified person.
RT6612002
Revision 1
September 2000
PRODUCT IDENTIFICATION
The model and manufacturing number are used for positive identification of component parts used in manufacturing.
When engineering and manufacturing changes take place where interchangeability of components are affected, the
manufacturing number will change.
It is very important to use the model and manufacturing numbers at all times when requesting service or parts information.
G
U
V
A 045 A X 30
Product Type
Airflow Capability
30: 1.5 - 3.0 Tons
G: Gas Furnace
40: 1.5 - 4.0 Tons
50: 2.0 - 5.0 Tons
Supply Type
U: Upflow/Horizontal
Additional Features
X: NOx Certified
Furnace Type
V: Condensing (95%) 2 Stage-Variable Speed
Design Series
A: First Series
Model Family
A: Air Command 95 (40" Height)
WARNING
Nominal Input
045:
45,000 Btuh
070:
70,000 Btuh
090:
90,000 Btuh
115:
115,000 Btuh
IF REPAIRS ARE ATTEMPTED BY UNQUALIFIED PERSONS, DANGEROUS CONDITIONS (SUCH AS EXPOSURE TO ELECTRICAL SHOCK)
MAY RESULT. THIS MAY CAUSE SERIOUS INJURY OR DEATH.
AMANA WILL NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY
DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE PROCEDURES. IF YOU PERFORM SERVICE ON YOUR OWN PRODUCT, YOU ASSUME RESPONSIBILITY
FOR ANY PERSONAL INJURY OR PROPERTY DAMAGE WHICH MAY RESULT.
CAUTION
2 Rev. 1
PRODUCT DESIGN
General Operation
This GUVA furnace is equipped with an electronic ignition
device to light the burners and an induced draft blower to
exhaust combustion products.
An interlock switch prevents furnace operation if the blower
door is not in place. Keep the blower access doors in place
except for inspection and maintenance.
This furnace is also equipped with a self-diagnosing electronic control module. In the event a furnace component is
not operating properly, the control module LED will flash
on and off in a factory-programmed sequence, depending
on the problem encountered. This light can be viewed
through the observation window in the blower access door.
Refer to the Troubleshooting Chart for further explanation
of the LED codes and Abnormal Operation - Integrated
Ignition Control section in the Service Instructions for an
explanation of the possible problem.
3. Conversion kits for propane gas and high altitude natural and propane gas operation are available. See High
Altitude Derate chart for details.
4. Installer must supply the following gas line fittings, depending on which entrance is used:
Left -- Two 90° Elbows, one close nipple, straight pipe
Right -- Straight pipe to reach gas valve.
Accessibility Clearances (Minimum)
MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS
POSITION*
Upflow
Horizontal
SIDES
0
6
(INCHES)
FRONT REAR
3
0
3
0
TOP
1
6
BOTTOM
C
C
FLUE
0
0
* = All positioning is determined as installed unit is viewed from the front.
C = If placed on combustible floor, floor MUST be wood ONLY.
The rated heating capacity of the furnace should be greater
than or equal to the total heat loss of the area to be heated.
The total heat loss should be calculated by an approved
method or in accordance with “ASHRAE Guide” or “Manual
J-Load Calculations” published by the Air Conditioning Contractors of America.
36" at front is required for servicing or cleaning.
*Obtain from: American National Standards Institute 1430
Broadway New York, NY 10018
High Altitude Derate
When this furnace is installed at high altitude, the appropriate High Altitude orifice kit must be installed. This is required due to the natural reduction in the density of both
the gas fuel and combustion air as altitude increases. The
kit will provide the proper design certified input rate within
the specified altitude range.
Location Considerations
•
The furnace should be as centralized as is practical
with respect to the air distribution system.
•
Do not install the furnace directly on carpeting, tile,
or combustible material other than wood flooring.
•
When suspending the furnace from rafters or joists,
use 3/8" threaded rod and 2” x 2” x 3/8” angle as
shown in the Installation and Service Instructions.
The length of the rod will depend on the application
and clearance necessary.
•
When installed in a residential garage, the furnace
must be positioned so the burners and ignition source
are located not less than 18 inches (457 mm) above
the floor and protected from physical damage by vehicles.
Notes:
1. Installer must supply one or two PVC pipes: one for
combustion air (optional) and one for the flue outlet
(required). Vent pipe must be either 2” or 3” in diameter, depending upon furnace input, number of elbows,
length of run and installation (1 or 2 pipes). The optional Combustion Air Pipe is dependent on installation/code requirements and must be 2” or 3” diameter
PVC.
Note: In all cases accessibility clearance shall take precedence over clearances from the enclosure where accessibility clearances are greater. All dimensions are given in
inches.
PROPANE AND HIGH ALTITUDE KITS
MODEL
NUMBER
0 to
7,000 ft.
7,001 to
9,000 ft.
9,001 to
11,000 ft.
7,001 to
11,000 ft.
7,001 to
11,000 ft.
LPTK09
HANG13
HANG14
HALP11
HAPS28
GUVA045AX30
Propane
High Altitude
High Altitude
High Altitude
High Altitude
GUVA070AX40 Conversion Kit Natural Gas Kit Natural Gas Kit Propane Gas Kit
Pressure Switch Kit
(#55 Orifices)
(#44 Orifices)
(#45 Orifices)
(#56 Orifices)
LPTK09
HANG13
HANG14
HALP11
HAPS29
GUVA090AX50
Propane
High Altitude
High Altitude
High Altitude
High Altitude
GUVA115AX50 Conversion Kit Natural Gas Kit Natural Gas Kit Propane Gas Kit
Pressure Switch Kit
(#55 Orifices)
(#44 Orifices)
(#45 Orifices)
(#56 Orifices)
High altitude kits are purchased according to the installation altitude and usage of either natural or propane gas.
Refer to the chart above for a tabular listing of appropriate
altitude ranges and corresponding manufacturer’s high altitude Natural Gas and Propane Gas kits. For a tabular
listing of appropriate altitude ranges and corresponding
manufacturer's High Altitude Pressure Switch kits, refer to
either the Pressure Switch Trip Points & Usage Chart in
this manual or the Accessory Charts in Service Instructions.
2. Line voltage wiring can enter through the right or left
side of the furnace. Low voltage wiring can enter
through the right or left side of furnace.
3 Rev. 1
PRODUCT DIMENSIONS
AIR
DISCHARGE
A
28 3/4
B
(DISCHARGE)
C
3/4
3/4
2 1/2
20 3/16
AIR INTAKE PIPE
2" PVC
ALTERNATE
GAS SUPPLY
HOLE
VENT/FLUE PIPE
2" PVC
2 1/16
2 5/8
DRAIN
TRAP
CL
30 1/4
CONDENSATE
DRAIN TRAP
w/ 3/4" PVC
DISCHARGE
(RIGHT OR
LEFT SIDE)
40
14
27 1/8
30 1/4
2 5/8
19 3/16
2
SIDE CUT-OUT
RIGHT SIDE
DRAIN LINE
HOLES
6 1/8
19 3/16
1 3/4
ALTERNATE
VENT/FLUE
LOCATION
4 1/8
23
LOW VOLTAGE
ELECTRICAL HOLE
HIGH VOLTAGE
ELECTRICAL HOLE
ALTERNATE
AIR INTAKE LOCATION
STANDARD GAS
SUPPLY HOLE
2 11/16
7 3/8
LEFT SIDE
DRAIN LINE
HOLES
AIR
DISCHARGE
3/4
HIGH VOLTAGE
ELECTRICAL HOLE
11 3/4
16 5/8
11 3/4
9 3/8
DRAIN
TRAP
CL
LOW VOLTAGE
ELECTRICAL HOLE
32 13/16
7 7/8
1 3/4
SIDE CUT-OUT
1 5/8
1 1/2
D
BOTTOM KNOCK-OUT
23 1/2
BOTTOM KNOCK-OUT
RIGHT SIDE
VIEW
FRONT
VIEW
LEFT SIDE
VIEW
Cabinet
Size
Units
A
B
C
D
Small
045__30
16-1/2
15
12-3/8
12-5/8
Medium
070__40
20-1/2
19
16-3/8
14-5/8
Large
090__50
115__50
24-1/2
23
20-3/8
18-5/8
All dimensions are in inches.
4 Rev. 1
COMPONENT IDENTIFICATION
BLOWER COMPARTMENT
BURNER COMPARTMENT
5
6
7
8
7
9 10
4
11
3
3
12
2
13
14 15
1
34
16
17
18
19
20
18
19
20
33
22
32
31
30
21
33
23
29
24
28
27
26
25
Upflow/Horizontal
1
Two-Stage Gas Valve
17 Two-Speed Induced Draft Blower
2
Gas Line Entrance (Alternate)
18 Coil Front Cover Pressure Tap
3
Pressure Switch(es)
19 Coil Front Cover Drain Tap
4
Gas Manifold
20 Drain Line Penetrations
5
Combustion Air Intake Connection
21 Drain Trap
6
Hot Surface Igniter
22 Inductor (Not All Models)
7
Rollout Limit
23 Electrical Connection Inlets (Alternate)
8
Burners
24 24 Volt Thermostat Connections
9
Flame Sensor
25 Two-Stage Integrated Control Module
10 Flue Pipe Connection
(with diagnostic LED)
11 Flue Pipe (Internal)
26 Transformer (40 VA)
12 Combustion Air Intake (Alternate)
27 ECM Variable Speed Circulator Blower
13 Primary Limit
28 ECM Motor Interface Board
14 Gas Line Entrance
29 Bottom Return Filter Retainer
15 Flue Pipe Connection (Alternate)
30 Blower Door Interlock Switch
16 Rubber Elbow
31 Junction Box
32 Electrical Connection Inlets
33 Auxiliary Limit(s)
34 Coil Front Cover
5 Rev. 1
PRODUCT DESIGN
PRESSURE SWITCH TRIP POINTS AND USAGE CHART
MODEL
NEGATIVE
PRESSURE
ID BLOWER
WITH FLUE
NOT FIRING
TYPICAL SEA
LEVEL DATA
NEGATIVE
PRESSURE
ID BLOWER
WITH FLUE
FIRING
TYPICAL SEA
LEVEL DATA
NEGATIVE
PRESSURE
COIL COVER
WITH FLUE
NOT FIRING
TYPICAL SEA
LEVEL DATA
NEGATIVE
PRESSURE
COIL COVER
WITH FLUE
FIRING
TYPICAL SEA
LEVEL DATA
LOW
FIRE
HIGH
FIRE
LOW
FIRE
HIGH
FIRE
LOW
FIRE
HIGH
FIRE
LOW
FIRE
HIGH
FIRE
GUVA045AX30
GUVA070AX40
-0.45
-0.90
-0.50
-0.95
-0.25
-0.25
-0.25
-0.25
GUVA090AX50
GUVA115AX50
-0.65
-1.20
-0.70
-1.25
-0.25
-0.25
-0.25
-0.25
PRESSURE SWITCH TRIP POINTS AND USAGE CHART
0 to 7,000 ft.
MODEL
TRIP POINT
COIL COVER
PRESSURE
SWITCH
LOW
HIGH
FIRE
FIRE
COIL
COVER
PRESSURE
SWITCH
PART #
TRIP POINT
ID BLOWER
PRESSURE
SWITCH
LOW
HIGH
FIRE
FIRE
7,001 ft. to 11,000 ft.
ID BLOWER
PS1
PRESSURE
LABEL
SWITCH
COLOR
PART #
PS2
LABEL
COLOR
TRIP POINT
COIL COVER
PRESSURE
SWITCH
LOW
HIGH
FIRE
FIRE
TRIP POINT
ID BLOWER
PRESSURE
SWITCH
LOW
HIGH
FIRE
FIRE
HIGH
ALTITUDE
KIT
PS1
LABEL
COLOR
PS2
LABEL
COLOR
GUVA045AX30
GUVA070AX40
-0.10
-0.10
20197301
-0.30
-0.75
11177113
PURPLE
PINK
-0.10
-0.10
-0.22
-0.55
HAPS28
11177115
GREEN
YELLOW
GUVA090AX50
GUVA115AX50
-0.10
-0.10
20197301
-0.50
-1.10
11177114
WHITE
GRAY
-0.10
-0.10
-0.38
-0.82
HAPS29
11177116
ORANGE
LT BLUE
Note: All installations above 7,000 ft. require a pressure switch change. For installations in Canada the Amana 90% furnace is certified only to 4500.ft.
Note: Replacement pressure switch number is listed below high altitude kit number.
Note: Minimum negative pressure required to activate the pressure switch is -0.52" w.c.
Note: All negative pressure readings are in inches of water column (" w.c.).
T.O.D. PRIMARY LIMIT
PART NUMBER
20162903 20162905 20162907
OPEN SETTING (°F)
160
145
155
COLOR CODE(S)
BLUE
YELLOW ORANGE
1
GUVA045AX30
1
GUVA070AX40
1
GUVA090AX50
1
GUVA115AX50
ROLLOUT LIMIT SWITCHES
PART NUMBER
10123518 10123533 10123537
OPEN SETTING (°F)
170
200
190
COLOR CODE(S)
BLUE
YELLOW
GRAY
1
GUVA045AX30
2
GUVA070AX40
2
GUVA090AX50
2
GUVA115AX50
AUXILIARY LIMIT SWITCHES
PART NUMBER
10123533 10123535 10123536 10123537
OPEN SETTING (°F)
200
150
180
190
COLOR CODE(S)
YELLOW
RED
LT BLUE
GRAY
2
GUVA045AX30
2
GUVA070AX40
2
GUVA090AX50
2
GUVA115AX50
6 Rev. 1
PRODUCT DESIGN
Coil Matches:
A large array of Amana coils are available for use with the new GUVA furnaces, in either upflow or horizontal applications. These coils are available in both cased and uncased models, with or without a TXV expansion device. These new
95%+ furnaces match up with the existing Amana coils as shown in the chart below.
Btuh
Input
45,000
Cabinet Air Flow
Width
(tons)
16 1/2"
1 1/2 - 3
70,000
20 1/2"
2 1/2 - 4
90,000
24 1/2"
3-5
115,000
24 1/2"
3-5
CAA_F*C
Cased
A-Coils
CCA18FCC
CCA24FCC
CCA30FCC
CCA36FCC
CCA42FCC
CCA_FSC
Uncased
A-Coils
CCA18FSC
CCA24FSC
CCA30FSC
CCA36FSC
CCA42FSC
CHA_TCC
Cased
TXV A-Coils
CHA18TCC
CHA24TCC
CHA30TCC
CHA36TCC
CHA_TSC
Uncased
TXV A-Coils
CCF_F*C
Horiz.
A-Coils
CHF_TCC
Horiz.
A-Coils
CHA18TSC
CHA24TSC
CHA30TSC
CHA36TSC
CCF24FCC CHF18TCC
CCF30FCC CHF24TCC
CCF36FCC CHF30TCC
CCA30FDC
CCA36FDC
CCA42FDC
CCA48FCC
CCA48FSC
CHA42TCC
CHA42TSC
CCF24FDC
CCF36FDC CHF36TCC
CCF42FCC CHF42TCC
CCF48FCC
CCA36FKC
CCA48FDC
CCA54FCC
CCA57FCC
CCA60FCC
CCA54FSC
CCA57FSC
CCA60FSC
CHA48TCC
CHA54TCC
CHA57TCC
CHA60TCC
CHA48TSC
CHA54TSC
CHA57TSC
CHA60TSC
CCF48FDC
CHF48TCC
CCF60FCC
CHF60TCC
CCF61FCC
Thermostats:
The following Amana Thermostats are suggested for use with the GUVA Furnace Models:
Thermostats (Two-Stage Applications)
Thermostat
Man/Auto
Programmable
Cool
Heat
Batt. Powered
Batt. Bkup*
Shape
Color
1217701
Man. Changeover
No
2
2
No
No
Rectangular
Beige
1213407
Man. Changeover
Yes
1
2
No
Yes
Rectangular
White
*1213407 is 24V powered with battery backup.
Thermostats (Dual Fuel Applications)
Thermostat
Man/Auto
Programmable
Cool
Heat
Batt. Powered
Batt. Bkup*
Shape
Color
1213406
Man. Or Auto
Yes
2
3
No
Yes
Rectangular
White
*1213406 is 24V powered with battery backup.
Note: The above thermostat 1213406 is the recommended model for the GUVA furnace when used with a heat pump in a fossil fuel
application. It is not for use with the GUVA as a sole heating source.
7 Rev. 1
FURNACE SPECIFICATIONS
MODEL
GUVA045AX30
GUVA070AX40
GUVA090AX50
GUVA115AX50
Btuh Input (US) High Fire
46,000
69,000
92,000
115,000
Output (US) High Fire
44,300
66,900
88,800
111,100
Btuh Input (US) Low Fire
32,000
48,000
64,000
80,000
Output (US) Low Fire
30,800
46,400
61,700
77,400
96%
95.5%
95.6%
95.7%
Rated External Static (" w.c.)
.10 - .50
.10 - .50
.10 - .50
.10 - .50
Temperature Rise (°F)
30 - 60
30 - 60
30 - 60
35 - 65
-0.75
-0.75
-1.10
-1.10
A.F.U.E.
High Stage Pressure Switch Trip Point (" w.c.)
Low Stage Pressure Switch Trip Point (" w.c.)
-0.30
-0.30
-0.50
-0.50
Front Cover Pressure Switch Trip Point (" w.c)
-0.10
-0.10
-0.10
-0.10
Blower Wheel (D" x W")
11 x 7
11 x 9
11 x 10
11 x 10
1/2
3/4
1
1
Blower Horsepower
Blower Speeds
Refer to airflow charts on pages 9-14.
Max CFM @ 0.5 E.S.P.
Power Supply
Minimum Circuit Ampacity (MCA)
Maximum Overcurrent Device
Transformer (VA)
115-60-1
115-60-1
115-60-1
115-60-1
10.4
12.8
14.6
14.6
15
15
15
15
40
40
40
40
Heat Anticipator (Amps)
0.7
0.7
0.7
0.7
Primary Limit Setting (°F)
145
155
145
160
Auxiliary Limit Setting (°F)
150
190
180
200
Rollout Limit Setting (°F)
170
200
190
200
30 secs.
30 secs.
30 secs.
30 secs.
90 secs.
90 secs.
90 secs.
90 secs.
Fan Delay On Heating
Off Heating *
Fan Delay On Cooling **
Off Cooling ***
Gas Supply Pressure (Natural/Propane) ("w.c.)
0 or 5 secs.
0 or 5 secs.
0 or 5 secs.
0 or 5 secs.
0 or 45 secs.
0 or 45 secs.
0 or 45 secs.
0 or 45 secs.
7 / 11
7 / 11
7 / 11
7 / 11
Manifold Pressure (Natural/Propane) High Stage ("w.c.)
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
Manifold Pressure (Natural/Propane) Low Stage ("w.c.)
1.9 / 6.0
1.9 / 6.0
1.9 / 6.0
1.9 / 6.0
Orifice Size (Natural/Propane)
#43 / #55
#43 / #55
#43 / #55
#43 / #55
Number of Burners
2
3
4
5
Vent Connector Diameter (inches)
2
2
2
2
Combustion Air Connector Diameter (inches)
2
2
2
2
133
157
172
184
Shipping Weight (lbs.)
* Off Heating - This fan delay timing is adjustable (60, 90, 120 or 180 seconds), 90 seconds as shipped.
** On Cooling - This fan delay timing can be set at either 0 or 5 seconds. Refer to Circulator Blower Timing and Speeds
Selection section in the Service Instructions for details.
*** Off Cooling - This fan delay timing can be set at either 0 or 45 seconds. Refer to Circulator Blower Timing and Speeds
Selection section in the Service Instructions for details.
1. These furnaces are manufactured for natural gas operation. Optional kits are available for conversion to propane
gas operation.
2. For elevations above 2000 feet the rating should be reduced by 4% for each 1000 feet above sea level. The furnace
must not be derated, orifice changes should only be made if necessary for altitude.
3. The total heat loss from the structure as expressed in TOTAL BTU/HR must be calculated by the manufacturers
method in accordance with the "A.S.H.R.A.E. GUIDE" or "MANUAL J-LOAD CALCULATIONS" published by the
AIR CONDITIONING CONTRACTORS OF AMERICA. The total heat loss calculated should be equal to or less
than the heating capacity. Output based on D.O.E. test procedures, steady state efficiency times output.
4. Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps.
8 Rev. 1
BLOWER PERFORMANCE SPECIFICATIONS
GUVA045AX30
(Rise Range: 30 - 60°F)
Heating
Speed
Tap
Adjust
Tap
Minus (-)
A
B
C
D
Low Stage High Stage
CFM
CFM
at
at
.1" to .5" w.c. .1" to .5" w.c.
ESP
ESP
495
713
GUVA070AX40
(Rise Range: 30 - 60°F)
Rise
(°F)
Heating
Speed
Tap
57
Normal
550
792
51
Plus (+)
605
871
Minus (-)
540
778
Normal
600
864
47
Plus (+)
660
950
Minus (-)
585
842
Adjust
Tap
Minus (-)
A
B
C
D
56
840
1210
50
46
Plus (+)
924
1331
46
52
Minus (-)
828
1192
51
Normal
920
1325
46
43
Plus (+)
1012
1457
42
48
Minus (-)
900
1296
47
B
C
Normal
650
936
43
Normal
1000
1440
42
Plus (+)
715
1030
39
Plus (+)
1100
1584
38
Minus (-)
630
907
45
Minus (-)
972
1400
43
Normal
700
1008
40
Plus (+)
770
1109
36
Adjust
Tap
Minus (-)
A
Rise
(°F)
Normal
D
Normal
1080
1555
39
Plus (+)
1188
1711
35
GUVA090AX50
(Rise Range: 30 - 60°F)
Heating
Speed
Tap
Low Stage High Stage
CFM
CFM
at
at
.1" to .5" w.c. .1" to .5" w.c.
ESP
ESP
756
1089
Low Stage High Stage
CFM
CFM
at
at
.1" to .5" w.c. .1" to .5" w.c.
ESP
ESP
1013
1458
GUVA115AX50
(Rise Range: 35 - 65°F)
Rise
(°F)
Heating
Speed
Tap
Minus (-)
56
Normal
1125
1620
50
Plus (+)
1238
1782
45
Minus (-)
1076
1549
52
Normal
1195
1721
47
Plus (+)
1315
1893
43
Minus (-)
1139
1639
49
Normal
1265
1822
44
Plus (+)
1392
2004
40
Minus (-)
1202
1730
47
Normal
1335
1922
42
Plus (+)
1469
2115
38
1. Units are shipped without filter(s). CFM in chart is without filter(s).
2. All furnaces shipped with heating speed set at "B". Installer should adjust blower speed as needed.
3. INSTALLATION IS TO BE ADJUSTED TO OBTAIN
TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.
Adjust
Tap
A
B
C
D
Low Stage High Stage
CFM
CFM
at
at
.1" to .5" w.c. .1" to .5" w.c.
ESP
ESP
1107
1594
Rise
(°F)
63
Normal
1230
1771
57
Plus (+)
1353
1948
52
Minus (-)
1139
1639
62
Normal
1265
1822
56
Plus (+)
1392
2004
50
Minus (-)
1170
1685
60
Normal
1300
1872
54
Plus (+)
1430
2059
49
Minus (-)
1202
1730
58
Normal
1335
1922
53
Plus (+)
1469
2115
48
5. The above chart is for U.S. furnaces installed at 0-2000
feet. At higher altitudes, a properly derated unit will have
approximately the same temperature rise at a particular CFM, while the ESP at that CFM will be lower.
6. Propane gas installations will have a High Stage rise
approximately 4°F lower than shown in above tables.
4. The chart is for information only. For satisfactory operation, external static pressure not to exceed value
shown on rating plate.
9 Rev. 1
BLOWER PERFORMANCE SPECIFICATIONS
High (Single) Stage Cooling Speed Charts
Single Stage Cooling: “Y” From T-Stat to “Y” on Two-Stage Integrated Control Module
Two-Stage Cooling: “Y2” From T-Stat to “Y/Y2” on Circulator Blower Interface Board
GUVA045AX30
Cooling
Speed
Tap
Adjust
Tap
Minus (-)
A
B
C
D
GUVA070AX40
CFM
at
.1" to .8" w.c.
ESP
540
Normal
600
Plus (+)
660
Minus (-)
720
Normal
800
Plus (+)
880
Minus (-)
900
Normal
1000
Plus (+)
1100
Minus (-)
1080
Normal
1200
Plus (+)
1320
Cooling
Speed
Tap
Minus (-)
A
B
C
D
GUVA090AX50
Cooling
Speed
Tap
Adjust
Tap
Minus (-)
A
B
C
D
Adjust
Tap
CFM
at
.1" to .8" w.c.
ESP
540
Normal
600
Plus (+)
660
Minus (-)
720
Normal
800
Plus (+)
880
Minus (-)
990
Normal
1100
Plus (+)
1210
Minus (-)
1286
Normal
1429
Plus (+)
1572
GUVA115AX50
CFM
at
.1" to .8" w.c.
ESP
720
Normal
800
Plus (+)
880
Minus (-)
990
Normal
1100
Plus (+)
1210
Minus (-)
1260
Normal
1400
Plus (+)
1540
Minus (-)
1620
Normal
1800
Plus (+)
1980
Cooling
Speed
Tap
Adjust
Tap
Minus (-)
A
B
C
D
CFM
at
.1" to .8" w.c.
ESP
720
Normal
800
Plus (+)
880
Minus (-)
990
Normal
1100
Plus (+)
1210
Minus (-)
1260
Normal
1400
Plus (+)
1540
Minus (-)
1620
Normal
1800
Plus (+)
1980
1. Units are shipped without filter(s). CFM in chart is without filter(s).
2. All furnaces shipped with cooling speed set at "D". Installer should adjust blower speed as needed.
3. For most cooling applications, about 400 CFM per ton is desirable.
4. The chart is for information only. For satisfactory operation, external static pressure not to exceed value shown on
rating plate.
5. Do not operate above 0.5" w.c. ESP in heating mode. Operating between 0.5" w.c. and 0.8" w.c. is tabulated for
cooling purposes only.
10 Rev. 1
BLOWER PERFORMANCE SPECIFICATIONS
Low Stage Cooling Speed Charts
“Y1” From T-Stat to “Y1” on Circulator Blower Interface Board
GUVA045AX30
Cooling
Speed
Tap
Adjust
Tap
Minus (-)
A
B
C
D
GUVA070AX40
CFM
at
.1" to .8" w.c.
ESP
380*
Normal
390
Plus (+)
429
Minus (-)
468
Normal
520
Plus (+)
572
Minus (-)
585
Normal
650
Plus (+)
Minus (-)
Normal
780
Plus (+)
858
Cooling
Speed
Tap
Minus (-)
A
B
Adjust
Tap
Minus (-)
A
B
C
D
Normal
CFM
at
.1" to .8" w.c.
ESP
378*
Normal
390
Plus (+)
429
Minus (-)
468
Normal
520
Plus (+)
572
Minus (-)
644
Normal
715
715
Plus (+)
787
702
Minus (-)
836
C
D
GUVA090AX50
Cooling
Speed
Tap
Adjust
Tap
Normal
929
Plus (+)
1022
GUVA115AX50
CFM
at
.1" to .8" w.c.
ESP
513*
520
Cooling
Speed
Tap
Adjust
Tap
Minus (-)
A
Normal
CFM
at
.1" to .8" w.c.
ESP
514*
520
Plus (+)
572
Plus (+)
572
Minus (-)
644
Minus (-)
644
Normal
715
Plus (+)
787
Minus (-)
819
Normal
910
Plus (+)
1001
Minus (-)
1053
Normal
1170
Plus (+)
1287
B
C
D
Normal
715
Plus (+)
787
Minus (-)
819
Normal
910
Plus (+)
1001
Minus (-)
1053
Normal
1170
Plus (+)
1287
1. Units are shipped without filter(s). CFM in chart is without filter(s).
2. All furnaces shipped with cooling speed set at "D". Installer should adjust blower speed as needed.
3. For most cooling applications, about 400 CFM per ton is desirable.
4. The chart is for information only. For satisfactory operation, external static pressure not to exceed value shown on
rating plate.
5. Do not operate above 0.5" w.c. ESP in heating mode. Operating between 0.5" w.c. and 0.8" w.c. is tabulated for
cooling purposes only.
6. * Motor CFM minimum.
11 Rev. 1
BLOWER PERFORMANCE SPECIFICATIONS
Heating-Based Continuous Fan Chart
“G” From T-Stat to “G” on Two-Stage Integrated Control Module
GUVA045AX30
Cooling
Speed
Tap
Adjust
Tap
Minus (-)
A
B
C
D
GUVA070AX40
CFM
at
.1" to .8" w .c.
ESP
495
Cooling
Speed
Tap
Minus (-)
A
550
Normal
840
Plus (+)
605
Plus (+)
924
Minus (-)
540
Minus (-)
828
B
Normal
600
Normal
920
Plus (+)
660
Plus (+)
1012
Minus (-)
585
Minus (-)
900
C
Normal
650
Normal
1000
Plus (+)
715
Plus (+)
1100
Minus (-)
630
Minus (-)
972
Normal
700
Plus (+)
770
Adjust
Tap
Minus (-)
A
B
C
D
CFM
at
.1" to .8" w .c.
ESP
756
Normal
D
GUVA090AX50
Cooling
Speed
Tap
Adjust
Tap
CFM
at
.1" to .8" w .c.
ESP
1013
Normal
1125
Plus (+)
Minus (-)
Normal
1195
Plus (+)
Minus (-)
Normal
1265
Plus (+)
Minus (-)
Normal
1335
Plus (+)
1469
Normal
1080
Plus (+)
1188
GUVA115AX50
Cooling
Speed
Tap
Adjust
Tap
Minus (-)
A
CFM
at
.1" to .8" w .c.
ESP
1170
Normal
1300
1238
Plus (+)
1430
1076
Minus (-)
1180
Normal
1311
1315
Plus (+)
1442
1139
Minus (-)
1191
Normal
1323
1392
Plus (+)
1455
1202
Minus (-)
1202
Normal
1335
Plus (+)
1469
B
C
D
1. Units are shipped without filter(s). CFM in chart is without filter(s).
2. All furnaces shipped with cooling speed set at "D". Installer should adjust blower speed as needed.
3. For most cooling applications, about 400 CFM per ton is desirable.
4. The chart is for information only. For satisfactory operation, external static pressure not to exceed value shown on
rating plate.
5. Do not operate above 0.5" w.c. ESP in heating mode. Operating between 0.5" w.c. and 0.8" w.c. is tabulated for
cooling purposes only.
12 Rev. 1
BLOWER PERFORMANCE SPECIFICATIONS
Cooling-Based Continuous Fan Chart (Option A)
“G” From T-Stat to “G” on”Circulator Blower Interface Board
GUVA045AX30
Cooling
Speed
Tap
Adjust
Tap
Minus (-)
A
B
C
D
GUVA070AX40
CFM
at
.1" to .8" w .c.
ESP
405
Cooling
Speed
Tap
Minus (-)
A
450
Normal
450
Plus (+)
495
Plus (+)
495
Minus (-)
540
Minus (-)
540
B
Normal
600
Normal
600
Plus (+)
660
Plus (+)
660
Minus (-)
675
Minus (-)
743
C
Normal
750
Normal
825
Plus (+)
825
Plus (+)
908
Minus (-)
810
Minus (-)
965
Normal
900
Plus (+)
990
Adjust
Tap
Minus (-)
A
B
C
D
CFM
at
.1" to .8" w .c.
ESP
405
Normal
D
GUVA090AX50
Cooling
Speed
Tap
Adjust
Tap
Normal
Normal
1072
Plus (+)
1179
GUVA115AX50
CFM
at
.1" to .8" w .c.
ESP
540
600
Cooling
Speed
Tap
Adjust
Tap
Minus (-)
A
Normal
CFM
at
.1" to .8" w .c.
ESP
540
600
Plus (+)
660
Plus (+)
660
Minus (-)
743
Minus (-)
743
Normal
825
Normal
825
B
Plus (+)
908
Plus (+)
908
Minus (-)
945
Minus (-)
945
Normal
1050
1155
C
Normal
1050
Plus (+)
1155
Plus (+)
Minus (-)
1215
Minus (-)
1215
Normal
1350
Normal
1350
Plus (+)
1485
Plus (+)
1485
D
1. Units are shipped without filter(s). CFM in chart is without filter(s).
2. All furnaces shipped with cooling speed set at "D". Installer should adjust blower speed as needed.
3. For most cooling applications, about 400 CFM per ton is desirable.
4. The chart is for information only. For satisfactory operation, external static pressure not to exceed value shown on
rating plate.
5. Do not operate above 0.5" w.c. ESP in heating mode. Operating between 0.5" w.c. and 0.8" w.c. is tabulated for
cooling purposes only.
13 Rev. 1
BLOWER PERFORMANCE SPECIFICATIONS
Cooling-Based Continuous Fan Chart (Option B)
“G” From T-Stat to “Y1” on Circulator Blower Interface Board
[Note: Only applicable for installations with single-stage cooling only, or no cooling.]
[Note: EAC terminals on the Two-Stage Integrated Control Module will not energize with this method.]
GUVA045AX30
Cooling
Speed
Tap
Adjust
Tap
Minus (-)
A
B
C
D
GUVA070AX40
CFM
at
.1" to .8" w .c.
ESP
380*
Normal
390
Cooling
Speed
Tap
Minus (-)
A
B
C
D
Normal
390
429
Plus (+)
429
Minus (-)
468
Minus (-)
468
Normal
520
Normal
520
B
Plus (+)
572
Plus (+)
572
Minus (-)
585
Minus (-)
644
Normal
650
Normal
715
C
Plus (+)
715
Plus (+)
787
Minus (-)
702
Minus (-)
836
Normal
780
Plus (+)
858
Adjust
Tap
Minus (-)
A
CFM
at
.1" to .8" w .c.
ESP
378*
Plus (+)
D
GUVA090AX50
Cooling
Speed
Tap
Adjust
Tap
Normal
929
Plus (+)
1022
GUVA115AX50
CFM
at
.1" to .8" w .c.
ESP
513*
Normal
520
Plus (+)
572
Minus (-)
644
Normal
715
Cooling
Speed
Tap
Adjust
Tap
Minus (-)
A
B
CFM
at
.1" to .8" w .c.
ESP
514*
Normal
520
Plus (+)
572
Minus (-)
644
Normal
715
Plus (+)
787
Plus (+)
787
Minus (-)
819
Minus (-)
819
Normal
910
Normal
910
Plus (+)
1001
Plus (+)
1001
Minus (-)
1053
Minus (-)
1053
Normal
1170
Normal
1170
Plus (+)
1287
Plus (+)
1287
C
D
1. Units are shipped without filter(s). CFM in chart is without filter(s).
2. All furnaces shipped with cooling speed set at "D". Installer should adjust blower speed as needed.
3. For most cooling applications, about 400 CFM per ton is desirable.
4. The chart is for information only. For satisfactory operation, external static pressure not to exceed value shown on
rating plate.
5. Do not operate above 0.5" w.c. ESP in heating mode. Operating between 0.5" w.c. and 0.8" w.c. is tabulated for
cooling purposes only.
6. * Motor CFM minimum.
14 Rev. 1
BLOWER PERFORMANCE SPECIFICATIONS
BTU OUTPUT vs TEMPERATURE RISE CHART
100
600 CFM
90
700
80
800
TEMPERATURE RISE
900
1000
70
1100
1200
60
1400
1600
50
1800
2000
2200
2400 CFM
40
30
FORMULAS
BTU OUTPUT = CFM x 1.08 x RISE
BTU OUTPUT
RISE =
÷ CFM
1.08
20
10
15 Rev. 1
30
40
50
60
70
80
90
100
OUTPUT BTU/HR x 1000
110
120
130
140
150
GY-12
BR-13
10
YL-20
C
C
NO
R
OR-22
C
HI
GAS VALVE
BR-13
PM
RD
WH
BK
Y1 W2 W1
RD-15
WH-7
RD-2
NO
BU-12
BU-36
C
BK-3
OR-10
BU-38
HOT
SURFACE
IGNITER
2 PIN
CONNECTOR
AUTO RESET
PRIMARY
LIMIT
CONTROL
PK-30
RD-2
C1
C2
R3
WH-33
VT-28
EM/W2
O
R2
W1
GN
WH-42
BK-41
VT-28
PK-30
GY-8
6 PIN
CONNECTOR
115
VAC
L
GND
N
JUNCTION BOX WITH BLOWER
COMPARTMENT DOOR SWITCH
GND
INDOOR
AIR
CIRCULATION
BLOWER
ELECTRONIC
AIR CLEANER
C
C
CIRC-N
EAC-N
IND-N
HUM-N
IGN-N
XFMR-N
MANUAL RESET
ROLLOUT LIMIT
CONTROL(S)
(SINGLE CONTROL
ON 45 KBTU)
NO
GAS
VALVE
C
HI
PM
FRONT COVER
PRESSURE
SWITCH
LOW FIRE PRESSURE
SWITCH
MANUAL RESET
AUXILIARY
LIMIT CONTROLS
AUTO
RESET
PRIMARY
LIMIT
CONTROL
40 VA TRANSFORMER
24 VAC
115 VAC
GND
LINE-N
DISCONNECT
TO 115VAC/ 1Ø /60 HZ POWER SUPPLY WITH
OVERCURRENT PROTECTION DEVICE
WARNING:
DISCONNECT POWER
BEFORE SERVICING.
WIRING TO UNIT
MUST BE PROPERLY
POLARIZED AND
GROUNDED.
DOOR
SWITCH
INDUCTOR COIL
(NOT ALL MODELS)
LINE-H
EAC H
IND LO
ID
BLWR
HUMIDIFIER
HOT SURFACE
IGNITER
C
DISCONNECT
RD-37
WH-32
VT-28
40 VA
TRANSFORMER
SWITCH (PRESS.)
OVERCURRENT
PROT. DEVICE
IGNITER
SWITCH (TEMP.)
FIELD SPLICE
FIELD GND
EQUIPMENT GND
L
GND
N
WARNING:DISCONNECT POWER BEFORE
SERVICING.WIRING TO UNIT MUST BE
PROPERLY POLARIZED AND GROUNDED.
GND
NO
HIGH FIRE
PRESSURE SWITCH
NO
FLAME SENSOR
C1
R3
TR(9)
GND(4)
MVCOM(8)
MVH(1)
PS2(2)
MVL(7)
PS1(12)
HLI(6)
HLO(11)
TH(5)
CIRC
INPUT
IND HI
IGN H
HUM H
FP (3)
COOL
Y/
Y2 R2
XFMR-H
W1
INTERFACE
BOARD
EM/
W2
HEAT
LO
TO MICRO
TO
MICRO
PLUG CONNECTION
TERMINAL
INTERNAL TO
INTEGRATED CONTROL
JUNCTION
HI VOLTAGE FIELD
HI VOLTAGE (115V)
LOW VOLTAGE FIELD
LOW VOLTAGE (24V)
JUNCTION BOX WITH BLOWER COMPARTMENT
DOOR SWITCH (OPEN WHEN DOOR IS OPEN)
BK
-1
INTEGRATED CONTROL MODULE
C
W2
G
Y
W1
R
HEAT
HI
OR-10
GY-8
WH-5
BK-4
24V THERMOSTAT CONNECTIONS
BU-38
WH-33
G
Y/Y2
STEADY ON = REPLACE CONTROL
VT-28
BK-44
WH-46
0
1 FLASH =
INTEGRATED CONTROL MODULE
RD
3 PIN
CONNECTOR
INDUCED DRAFT
BLOWER
Y2
DIAGNOSTIC
LED
PK-30
HUM
EAC
CIR
XFMR
LINE
IGN-N
IND-N
IND-LO
IND-HI
EAC
HUM
IGN
XMFR
CIRC INPUT
LINE
HEAT-HI
HEAT-LO
INDOOR AIR
CIRCULATION BLOWER
COOL
BU
-27
GY-47
VT-25
HIGH FIRE
PRESSURE SWITCH
FRONT COVER
PRESSURE SWITCH
G
BLOWER COMPARTMENT
BURNER COMPARTMENT
GND
PK
-17
MANUAL RESET ROLLOUT LIMIT CONTROL(S)
(SINGLE CONTROL ON 45 KBTU)
RD-18
WH
YL
WH
BK
THERMOSTAT CONNECTIONS
C
LOW FIRE
PRESSURE
SWITCH
BK
5 PIN
CONNECTOR
WH-45
PK-47
BK-37
1
2 FLASHES = PRESSURE SWITCH STUCK CLOSED
OR-10
BK-31
24
VAC
PK-30
NOTES:
1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.
REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE
3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE
RATING OF AT LEAST 105°C. USE COPPER CONDUCTORS ONLY.
TO 115 VAC/ 1Ø / 60 HZ
POWER SUPPLY WITH
OVERCURRENT PROTECTION
DEVICE
4. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.
GUVA___AX__
INTEGRATED CONTROL MODULE
11
RD
GND
2
3 FLASHES = PRESSURE SWITCH STUCK OPEN
INDUCTOR COIL
GUVA070,090,115
MODELS ONLY
3
4 FLASHES = THERMAL PROTECTIVE DEVICE OPEN
RD-37
4
CONTINUOUS FLASHES = UNANTICIPATED FLAME PRESENT
WH WHITE
BU BLUE
GY GRAY
RD RED
PK PINK
BR BROWN
SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)
C
COLOR CODES:
YL YELLOW
OR ORANGE
VT VIOLET
GN GREEN
BK BLACK
20276101 REV.00
MANUAL
RESET
AUXILIARY
LIMITS
7
OR-15
8
GN
4
VT-25
5
12
YL-20
1
9
ON
BU-36
2
6
1 2
FLAME
SENSOR
3
PS1 HLO GND
INTEGRATED CONTROL
MODULE
TR
GY-8
YL
MVMVL
COM
INTERFACE BOARD
NEUTRAL 120VAC
HOT 120VAC
GND
TH
HLI
NO
WIRING DIAGRAMS
16 Rev. 1
TO AVOID POSSIBLE ELECTRICAL SHOCK, PERSONAL INJURY,
OR DEATH, DISCONNECT THE POWER BEFORE SERVICING.
! WARNING
CIRCULATOR BLOWER
PS2 MVH
FP
DEHUMIDIFY
CUT TO ENABLE
BLOWER ASSEMBLY SCHEMATIC
GUVA___AX__ MODEL FURNACES
This schematic is for reference only. Not all wiring is as shown above,
refer to the appropriate wiring diagram for the unit being serviced.
COOL
BU-38
A
B
C
D
O
RD-37
R3 R2
! WARNING
ADJUST
NORM
(+)
(-)
TEST
C1
HEAT
A
B
C
D
YL
RD
BK
WH
NO
GND
RD-37
BU-38
TRANSFORMER
LOAD
LINE
BK-31
WH-32
YL
BK
WH
OR-10
BK-41
BK-31
RD
WH-32
GY-8
TO AVOID POSSIBLE ELECTRICAL SHOCK, PERSONAL INJURY,
OR DEATH, DISCONNECT THE POWER BEFORE SERVICING.
EM/ W1
W2
MVH
PS2
FP
C2
GND
TH
HLI
2
1
N
O
G
LO
HI
CL
COM
EMERSON ELECTRIC CO.
WHITE-RODGERS
MVL
MV
COM
TR
2
HLO
PS1
OFF
IMPORTANT
WR
NEUTRAL 120VAC
CIRCULATOR BLOWER
C
CONTROL WILL LOCKOUT IF 120 VOLT
SERVICE WIRING IS REVERSED.
1
IGN
N
IND
N
IND
LO
IND
HI
G
CFM
WH-42
BK
-37
WH-45
WH-45
PIN 6
GY-8
BK-37
PIN 5
OR-10
WH-46
PIN 2
BK-41
BK
-44
PIN 1
PIN 3
PIN 4
VT-28
TO ECM
BLWR MOTOR
GN
PK-47
PIN 1
GROUND TO
SCROLL HOUSING
PIN 5
R
Y/Y2
Y
Y/Y2 Y1 G R1 DEHUM
PIN 4
W2
INTERFACE BOARD
PIN 3
HEAT
LO
COOL
HEAT
HI
LINE
XFMR
CIRC
INPUT
EAC
HUM
IGN
INDUCTOR COIL
(GUVA070,090,115 MODELS ONLY)
PIN 2
LINE
XFMR
EAC
HUM
W1
INTEGRATED CONTROL MODULE
UP
ECM BLOWER MOTOR
PK-30
AUXILIARY LIMITS
(SIDES OF BLOWER
HOUSINGS)
YL-34
SCHEMATICS
17 Rev. 1
INDUCER
TYPICAL SCHEMATIC
GUVA___AX__ MODEL FURNACES
WR50A51-235 INTEGRATED IGNITION CONTROL
This schematic is for reference only. Not all wiring is as shown above,
refer to the appropriate wiring diagram for the unit being serviced.
HEAT HEAT
HI
LO
IND IND
NEU LO
COOL
K10
K2
IND
HI
AIR
CLEANER
HUMIDIFIER
ACN
HUMN AC
HUM
R
CIRCULATOR
BLOWER
INPUT
K3A
K3A
K9A
K2
K9B
TH
K1
K1
LINE HOT
SCHEMATICS
18 Rev. 1
CIRCULATOR
BLOWER
XFMR
K4
24 V.A.C.
120 VAC
XFMRN
.001
LINE NEU
1M
K6
K3B
K7
1M
FP
IGNN
FLAME
SENSOR
PROBE
IGN
GND GND MV MVL
COM
C
IGNITOR
K8
PS2 PS1
HLO
HLI
36E
2 STAGE
GAS VALVE
HIGH
LIMIT
ROLLOUT
SWITCH
2ND STAGE
PRESSURE
SWITCH
1ST STAGE
PRESSURE
SWITCH
! WARNING
Y
G
W1
W2
COMPRESSOR
CONTACTOR COIL
R
Y
G
W1
W2
THERMOSTAT
P
M
H1
MVH
TR
C
TO AVOID POSSIBLE ELECTRICAL SHOCK, PERSONAL INJURY,
OR DEATH, DISCONNECT THE POWER BEFORE SERVICING.
AUX
LIMIT