Download Trane XV18 Install Manual

Installer’s Guide
Variable Speed ComfortLink™
™ II
Heat Pumps and Air Conditioners
4TWV8024A1000A
4TWV8036A1000A
4TWV8037A1000A
4TWV8048A1000A
4TWV8049A1000A
4TWV8060A1000A
4TTV8024A1000A
4TTV8036A1000A
4TTV8037A1000A
4TTV8048A1000A
4TTV8060A1000A
N o t e : “Graphics in this document are for representation only.
Actual model may differ in appearance.”
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videos on this
product
S A F E T Y WA R N I N G
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and
air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered
equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the
literature and on the tags, stickers, and labels that are attached to the equipment.
October 2014
18-BC92D1-1D-EN
SAFETY SECTION — OUTDOOR
I m p o rt a n t — This document contains a wiring diagram
and service information. This is customer property and
is to remain with this unit. Please return to service
information pack upon completion of work.
WA R N I N G
H A Z A R D O U S VO LTA G E !
F a i l u r e t o f o l l o w t h i s Wa r n i n g c o u l d r e s u l t i n
p r o p e rt y d a m a g e , s e v e r e p e r s o n a l i n j u r y, o r d e a t h .
D i s c o n n e c t a l l e l e c t r i c p o w e r, i n c l u d i n g r e m o t e
di sc o nne c ts be for e s erv i c in g. Fo ll ow p rop er
l o ck o u t / t a g o u t p r o c e d u r e s t o e n s u r e t h e p o w e r
c a n n o t b e i n a d v e rt e n t l y e n e r g i z e d .
WA R N I N G
R E F R I G E R A NT O I L !
A n y a tt e m p t t o r e p a i r a c e n t r a l a i r c o n d i t i o n i n g
p r o d u c t m a y r e s u l t i n p r o p e rt y d a m a g e , s e v e r e
p e r s o n a l i n j u r y, o r d e a t h .
T h e s e u n i t s u s e R - 4 10 A r e f r i g e r a n t w h i ch o p e r a t e s
at 50 to 70% higher pressures than R-22. Use only
R - 4 10 A a p p r o v e d s e r v i c e e q u i p m e n t . R e f r i g e r a n t
c y l i n d e r s a r e p a i n t e d a “ R o s e” c o l o r t o i n d i c a t e
the type of refrigerant and may contain a “dip”
t u b e t o a l l o w f o r ch a r g i n g o f l i q u i d r e f r i g e r a n t i n t o
t h e s y s t e m . A l l R - 4 10 A s y s t e m s w i t h v a r i a b l e
speed compressor s use a PVE oil that readily
a b s o r b s m o i s t u r e f r o m t h e a t m o s p h e r e . To l i m i t
thi s “ hyg roscop ic” a cti on , th e syste m sh oul d
remain sealed whenever possible. If a system has
been open to the atmosphere for more than 4
hour s, the compressor oil must be replaced. Never
b r e a k a v a c u u m w i t h a i r a n d a l w a y s ch a n g e t h e
driers when opening the system for component
replacement.
C AU T I O N
H OT S U R F A C E !
M ay ca us e m i no r t o s e v ere bur ni ng. Fai l ure t o
f o l l o w t h i s C a u t i o n c o u l d r e s u l t i n p r o p e rt y
d a m a g e o r p e r s o n a l i n j u r y.
D o n o t t o u ch t o p o f c o m p r e s s o r.
CAUTION
C O NTA I N S R E F R I G E R A NT !
Fa il u re to f ol lo w pro pe r p roc e du res c an re s ul t in
per sonal illness or injury or severe equipment
damage.
Syst em cont ains oil and refrigerant u nder high
p ressur e. Re cov e r re fr ig era nt to r el i ev e pr essur e
before opening system.
CAUTION
GR OUNDI NG R E QUIR E D!
Fa il u re to i ns pe c t or us e p rop er se rv i c e too ls m ay
r e s u l t i n e q u i p m e n t d a m a g e o r p e r s o n a l i n j u r y.
R e c o n n e c t a l l g r o u n d i n g d e v i c e s . A l l p a rt s o f t h i s
product that are capable of conducting electrical
c u rr e n t a r e g r o u n d e d . I f g r o u n d i n g w i r e s , s c r e w s ,
s tr ap s, cl i ps , n uts , o r wa s he r s us e d to c ompl e te a
p at h t o gro und a re r emov ed f or se rv ice , th ey must
be returned to their original position and properly
fastened.
WA R N I N G
S E RV I C E VA LV E S !
Fa il u re to f ol lo w thi s wa rn in g w i ll res u lt i n ab rup t
r e l e a s e o f s y s t e m ch a r g e a n d m a y r e s u l t i n
p e r s o n a l i n j u r y a n d / o r p r o p e rt y d a m a g e .
Extreme caution should be exercised when
o p e n i n g t h e L i q u i d L i n e S e r v i c e Va l v e . Tu r n v a l v e
s t e m c o u n t e r c l o ck w i s e o n l y u n t i l t h e s t e m
contacts the rolled edge. No torque is required.
WA R N I N G
B RA ZI NG RE QUI RE D!
Fa il u re to i ns pe c t li n es or us e pr ope r s e rv ic e t oo ls
may result in equipment damage or per sonal
i n j u r y.
i f u s i n g e x i s t i n g r e f r i g e r a n t l i n e s m a k e c e rt a i n t h a t
a ll jo in t s ar e b r a ze d , n o t s o l d e r e d .
WA R N I N G
H I G H L E A K A G E C U R R E NT !
F a i l u r e t o f o l l o w t h i s Wa r n i n g c o u l d r e s u l t i n
p r o p e rt y d a m a g e , s e v e r e p e r s o n a l i n j u r y, o r d e a t h .
E a rt h c o n n e c t i o n e s s e n t i a l b e f o r e c o n n e c t i n g
e l e c t r i c a l s u p p l y.
©2014 Trane
18-BC92D1-1D-EN
SA F E T Y S E C T I ON — O UT DO O R
WARNING
400 VOLTS
CAUTION - HO T S URFACE
ELECTRICAL HAZARD
Fa ilu re to fo llo w th is wa rn in g
coul d re s u lt in p e rs o n a l
in ju ry o r d e a th .
WAIT TWO (2) MINUTES
a fte r d is co n n e ctin g p o w e r
p rio r to to u ch in g e le ctrica l
components as they may
hol d a d a n g e ro u s ch a rg e o f
400VDC, th e n ve rify DC
Vo lta g e is le s s th a n 42 VDC a t
inve rte r te s t p o in ts la b e le d
+VDC and -VDC befor e
ser vicin g b o a rd .
+VDC
-VDC
+ VDC
and
- VDC
Approved Combinations for Variable Speed Units
•
•
•
•
•
TZONE 850 Comfort Control, or TZONE 950 with Software Version
3.0 or Higher
TAM8C or later models
XC80 Furnace
XC95m Furnace
Approved System Accessories
Note: See AHRI directory for approved indoor and outdoor model
combinations. Only Trane coils and air handlers are approved
for use with variable speed outdoor units.
Table 1.
Scan to see an
overview video
about the IVSC
Board
Operating Range
Cooling
55° F to 120° F
Heating
-10° F to 66° F
18-BC92D1-1D-EN
3
Table of Contents
Unit Location Considerations . . . . . . . . . . . . . . . 5
Electrical — High Voltage . . . . . . . . . . . . . . . . . . 18
......................................... 6
Coastal Considerations . . . . . . . . . . . . . . . . 7
Integrated Variable Speed Control Board
LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Setting Up the Unit . . . . . . . . . . . . . . . . . . . . . . . 8
Refrigerant Line Considerations . . . . . . . . . . . . 9
Refrigerant Line Brazing . . . . . . . . . . . . . . . . . . . 12
Refrigerant Line Leak Check . . . . . . . . . . . . . . . 14
Refrigerant Line and Indoor Coil
Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Charging: Weigh-In Method . . . . . . . . . . . . . . . 15
Service Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
System Charge Adjustment . . . . . . . . . . . . . . . 21
Subcool Charging Correction Charts. . . . . . . 22
Refrigerant Charging Chart . . . . . . . . . . . . . . . 22
Charging the Unit. . . . . . . . . . . . . . . . . . . . . . . . . . 23
Communicating Display Assembly
(CDA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Defrost Control (Heat Pump only). . . . . . . . . . 26
Checkout Procedures . . . . . . . . . . . . . . . . . . . . . . 27
Electrical — Low Voltage . . . . . . . . . . . . . . . . . . 17
4
18-BC92D1-1D-EN
Unit Location Considerations
Table 2. Unit Dimensions and Weight
Models
H x D x W (in)
Weight * (lb)
4TWV8024A
41 x 30 x 33
195
4TWV8036A
41 x 30 x 33
208
4TWV8037A
41 x 34 x 37
229
4TWV8048A
41 x 34 x 37
234
4TWV8049A
41 x 34 x 37
241
4TWV8060A
45 x 34 x 37
250
4TTV8024A
41 x 30 x 33
196
4TTV8036A
41 x 30 x 33
207
4TTV8037A
41 x 34 x 37
225
4TTV8048A
41 x 34 x 37
245
4TTV8060A
45 x 34 x 37
250
W
H
* Weight values are estimated (uncrated).
•
•
When mounting the outdoor unit on a roof, be sure the roof will
support the unit’s weight.
Properly selected isolation is recommended to alleviate sound or
vibration transmission to the building structure.
D
Table 3. Refrigerant Line and Service Valve Connection Sizes
Rated Line Sizes
Model
Service Valve
Connection Sizes
Vapor
Line
Liquid
Line
Vapor Line
Connection
Liquid Line
Connection
4TWV8024A
5/8 (a)
3/8
5/8
3/8
4TWV8036A
3/4 (a)
3/8
3/4
3/8
4TWV8037A
3/4 (a)
3/8
3/4
3/8
4TWV8048A
7/8 (a)
3/8
7/8
3/8
4TWV8049A
7/8 (a)
3/8
7/8
3/8
4TWV8060A
1—1/8 (b)
3/8
7/8
3/8
4TTV8024A
5/8 (a)
3/8
5/8
3/8
4TTV8036A
3/4 (a)
3/8
3/4
3/8
4TTV8037A
3/4 (a)
3/8
3/4
3/8
4TTV8048A
7/8 (a)
3/8
7/8
3/8
4TTV8060A
1—1/8 (c)
3/8
7/8
3/8
Sta n d a rd
Lin e Se t
150’ Ma x
Lin e Le n g th
100’ Ma x
Lin e
Le n g th
50’
Ma x
Lin e
Lift
Re fe r to (a ), (b ), a n d (c) fo o tn o te s fo r
s p e cific m o d e l d e ta ils
50
Ma x
Lin e
Lift
(a)
(b)
(c)
100’ Ma x
Lin e
Le n g th
The max length of refrigerant lines from outdoor to indoor unit MUST NOT exceed 150 feet. The max vertical change MUST NOT exceed 50 feet.
The max length of refrigerant lines from the outdoor to indoor unit MUST NOT exceed 80 feet. The max vertical change MUST NOT exceed 10 feet.
The max length of refrigerant lines from outdoor to indoor unit MUST NOT exceed 80 feet. The max vertical change MUST NOT exceed 25 feet.
18-BC92D1-1D-EN
5
Unit Location Considerations
Table 4. Alternate Refrigerant Line and Service Valve Connection Sizes
Service Valve
Connection Sizes
Alternate Line Sizes
Model
Vapor
Line
Liquid
Line
Vapor Line
Connection
Liquid Line
Connection
3/4" (a)
5/16"
5/8"
3/8"
5/8" (a)
5/16"
3/4"
3/8"
7/8" (b)
5/16"
3/4"
3/8"
5/8" (a)
5/16"
3/4"
3/8"
7/8" (b)
5/16"
3/4"
3/8"
4TWV8048A
3/4" (a)
3/8"
7/8"
3/8"
4TWV8049A
3/4" (a)
3/8"
7/8"
3/8"
3/4" (a)
3/8"
7/8"
3/8"
7/8" (a)
3/8"
7/8"
3/8"
4TWV8024A
4TWV8036A
4TWV8037A
4TWV8060A
Service Valve
Connection Sizes
Alternate Line Sizes
Model
4TTV8024A
4TTV8036A
4TTV8048A
4TTV8060A
(a)
(b)
6
Vapor
Line
Liquid
Line
Vapor Line
Connection
Liquid Line
Connection
3/4" (a)
5/16"
5/8"
3/8"
5/8" (a)
5/16"
3/4"
3/8"
7/8" (b)
5/16"
3/4"
3/8"
3/4" (a)
3/8"
7/8"
3/8"
3/4" (a)
3/8"
7/8"
3/8"
7/8" (a)
3/8"
7/8"
3/8"
The max length of refrigerant lines from outdoor to indoor unit MUST NOT exceed 150 feet. The max vertical change MUST NOT exceed 50 feet.
The max length of refrigerant lines from outdoor to indoor unit MUST NOT exceed 80 feet. The max vertical change MUST NOT exceed 25 feet.
18-BC92D1-1D-EN
Unit Location Considerations
Table 5. Suggested Locations for Best Reliability
•
•
•
•
•
•
•
•
Ensure the top discharge area is unrestricted for at least 5
feet above the unit.
Provide at least 3 feet clearance in front of the control box
(access panels) and any other side requiring service.
Do not locate close to bedrooms as operational sounds may
be objectionable.
Avoid locations near windows and similar areas where
condensation and freezing defrost vapor can annoy a
customer.
Position the outdoor unit a minimum of 12” from any wall or
surrounding shrubbery to ensure adequate airflow.
Outdoor unit location must be far enough away from any
structure to prevent excess roof runoff water or icicles from
falling directly on the unit.
Avoid Install
Near Bedrooms
Min 5’ Unrestricted
Min. 12” to
Shrubbery
Min 3’
Unrestricted
Acce ss Panel
Position the outdoor unit a minimum of 12” from any wall or
surrounding shrubbery to ensure adequate airflow.
Outdoor unit location must be far enough away from any
structure to prevent excess roof runoff water or icicles from
falling directly on the unit.
Min. 12” to
Shrubbery
Min. 12”
to Wa ll
Table 6. Cold Climate Considerations (Heat Pump Only)
Note: It is recommended that these precautions be taken for
units being installed in areas where snow accumulation and
prolonged below-freezing temperatures occur.
•
•
Units should be elevated 3–12 inches above the pad or
rooftop, depending on local weather. This additional height
will allow drainage of snow and ice melted during defrost cycle
prior to its refreezing. Ensure that drain holes in unit base pan
are not obstructed, preventing drainage of defrost water.
If possible, avoid locations that are likely to accumulate snow
drifts. If not possible, a snow drift barrier should be installed
around the unit to prevent a build-up of snow on the sides of
the unit.
Min . 12”
Snow
Ba rrie r
Snow L egs
3-12” Elevation
Pa d
Coastal Considerations
If installed within one mile of salt water, including seacoasts and inland waterways, models without factory supplied Seacoast Salt Shields
require the addition of BAYSEAC001 (Seacoast Kit) at installation time.
18-BC92D1-1D-EN
7
Unit Preparation
1. Check for damage and report promptly to the carrier
any damage found to the unit.
2. To remove the unit from the pallet, remove tabs by
cutting with a sharp tool.
Setting Up the Unit
Table 7. Pad Installation
When installing the unit on a support pad, such as a concrete slab,
consider the following:
8
•
The pad should be at least 1” larger than the unit on all sides.
•
The pad must be separate from any structure.
•
The pad must be level.
•
The pad should be high enough above grade to allow for drainage.
•
The pad location must comply with National, State, and Local
codes.
18-BC92D1-1D-EN
Refrigerant Line Considerations
Table 8. Required Refrigerant Line Length
Determine required line length and lift. You will need this to determine
the subcooling charging corrections later in the installation process.
Total Line Length = ___________________________Ft.
Total Vertical Change (lift) = ____________________Ft.
Line Le ngth
Table 9. Refrigerant Line Insulation
Important: The Vapor Line must always be insulated. DO NOT allow
the Liquid Line and Vapor Line to come in direct (metal to
metal) contact.
Liquid Li n e
Va p o r Lin e
Insulati o n
Note: The gas line must always be insulated. Insulating the liquid line
through attic spaces may benefit system performance by
minimizing heat gain in the liquid line.
18-BC92D1-1D-EN
9
Ref ri g er an t Li n e C o n s i d er at i o n s
Table 10. Reuse Existing Refrigerant Lines
C AU T I O N
R E F R I G E R A NT !
Fai l ure t o in sp ec t o r u se pro pe r s er vi c e to ol s m a y
r e s u l t i n e q u i p m e n t d a m a g e o r p e r s o n a l i n j u r y.
I f u s i n g e x i s t i n g r e f r i g e r a n t l i n e s m a k e c e rt a i n t h a t
all joints are brazed, not soldered.
For retrofit applications, where the existing indoor evaporator coil
and/or refrigerant lines will be used, the following precautions should
be taken.
•
Ensure that the indoor evaporator coil and refrigerant lines are
the correct size.
•
Ensure that the refrigerant lines are free of leaks, acid, and oil.
Important: For more information, see publication number SSAPG006–EN
Table 11. Refrigerant Line Routing Precautions
Important: Comply with National, State, and Local Codes when isolating line sets from joists, rafters, walls, or other structural elements.
Important: Take precautions to prevent noise within the building structure due to vibration transmission from the refrigerant lines.
For Example:
•
When the refrigerant lines must be fastened to floor joists or other framing in a structure, use isolation type hangers.
•
Isolation hangers should also be used when refrigerant lines are run in stud spaces or enclosed ceilings.
•
Where the refrigerant lines run through a wall or sill, they should be insulated and isolated.
•
Isolate the lines from all duct work.
•
Minimize the number of 90° turns.
Table 12. Isolation From Joist/Rafter
8 Fe e t Ma xim u m
J o is t/Ra fte r
Is o la to r
Lin e Se t
S id e Vie w
8 Fe e t Ma xim u m
Secure Vapor Line from joists using isolators every 8 ft. Secure Liquid Line directly to insulated Vapor Line using tape, wire, or other appropriate
method every 8 ft.
10
18-BC92D1-1D-EN
Re fr i g e ra n t L i n e C o n s i d e ra ti o n s
Table 13. Isolation In Wall Spaces
8 Fe e t Ma xim u m
Wa ll
Is o la to r
Lin e Se t
8 Fe e t Ma xim u m
S id e Vie w
Secure Vapor Line from joists using isolators every 8 ft. Secure Liquid Line directly to insulated Vapor Line using tape, wire, or other appropriate
method every 8 ft.
Table 14. Isolation Through Wall
Wa ll
Du ct Wo rk
Se a la n t
In s u la tio n
Va p o r Lin e
Is o la to r
Lin e Se t
DO NOT h a n g lin e s e ts fro m d u ct w o rk
18-BC92D1-1D-EN
11
Refrigerant Line Brazing
Table 15. Braze the Refrigerant Lines
1.
Remove caps or plugs. Use a deburring tool to debur the pipe
ends. Clean both internal and external surfaces of the tubing
using an emery cloth.
2.
Remove the pressure tap cap and valve core from each service
valves.
3.
Purge the refrigerant lines and indoor coil with dry nitrogen.
12
18-BC92D1-1D-EN
Re fr ig er a n t L in e B ra z i n g
Table 15. Braze the Refrigerant Lines (continued)
4.
Wrap a wet rag around the valve body to avoid heat damage and
continue the dry nitrogen purge.
5.
Braze the refrigerant lines to the service valves.
a.
6.
For Units shipped with a field-installed external drier, check
liquid line filter drier’s directional flow arrow to confirm
correct direction of refrigeration flow (away from outdoor unit
and toward evaporator coil) as illustrated. Braze the filter
drier to the Liquid Line.
Continue the dry nitrogen purge. Do not remove the wet rag until
all brazing is completed.
Important: Remove the wet rag before stopping the dry nitrogen
purge.
3-4” fro m va lve
Note: Precautions should be taken to avoid heat damage to base pan
during brazing. It is recommended to keep the flame directly
off of the base pan.
7.
Replace the pressure tap valve cores after the service valves have
cooled.
18-BC92D1-1D-EN
13
Refrigerant Line Leak Check
Table 16. Check for Leaks
1.
Pressurize the refrigerant lines and evaporator coil to 150 PSIG
using dry nitrogen.
2.
Check for leaks by using a soapy solution at each brazed location.
150 PSIG
Note: Remove nitrogen pressure and repair any leaks before
continuing.
Refrigerant Line and Indoor Coil Evacuation
I m p o rt a n t : Do not open the service valves until the
refrigerant lines and indoor coil leak check
and evacuation are complete.
1. Evacuate until the micron gauge reads no higher than
350 microns, then close off the valve to the vacuum
pump.
0350
Microns
ON
OFF
2. Observe the micron gauge. Evacuation is complete if
the micron gauge does not rise above 500 microns in
one (1) minute.
3. When evacuation is complete, blank off the vacuum
pump and micron gauge, and close the valves on the
manifold gauge set.
14
1 MIN.
18-BC92D1-1D-EN
Charging: Weigh-In Method
Weigh-In Method can be used for the initial installation, or anytime a system charge is being replaced. Weigh-In Method can also be used when
power is not available to the equipment site or operating conditions (indoor/outdoor temperatures) are not in range to verify with the
subcooling charging method.
Table 17. Heat Pumps
A
Model
024
036
B
C
Factory
Charge
7 lb.
8 lb.
Table 18. Air Conditioners
6 oz.
3 oz.
D
A
B
C
D
Charge
adder for
Indoor Coil
Charge
multiplier for
interconnecting
refrigerant
tube length
0.6 oz/ft
Charge
adder for
Indoor Coil
Charge
multiplier for
interconnecting
refrigerant tube
length
Model
6 oz.
0.6 oz/ft
024
7 lb.
6 oz.
6 oz.
0.6 oz/ft
036
7 lb.
14 oz.
7 oz.
0.6 oz/ft
9 lb.
6 oz.
12 oz.
0.6 oz/ft
8 oz.
Factory
Charge
037
9 lb.
8 oz.
12 oz.
0.6 oz/ft
037
048
9 lb.
13 oz.
13 oz.
0.6 oz/ft
048
11 lb.
1 oz.
1 lb., 0 oz.
0.6 oz/ft
049
10 lb.
12 oz.
15 oz.
0.6 oz/ft
060
11 lb.
14 oz.
1 lb., 2 oz.
0.6 oz/ft
060
11 lb.
14 oz.
1 lb., 2 oz.
0.6 oz/ft
Table 19. New Installations — Calculating Charge using the Weigh-In method
1. Measure in feet the distance between the outdoor unit and the indoor
unit and record on Line 1. Include the entire length of the line from the
service valve to the IDU.
New Installation Weigh-In Method Worksheet
2. Enter the charge multiplier from Column D.
2. Value from Column D
x ________________________
3. Multiply the total length of refrigerant tubing (Line 1) times the value on
Step 2. Record the result on Line 3 of the Worksheet.
3. Step 1 x Step 2
= ________________________
1. Line Length (ft)
________________________
4. Charge Adder (column C) + ________________________
4. Locate the outdoor equipment size in Column A. Record the value shown
in Column C of Table 16 for Heat Pumps or Table 17 for Air Conditioners.
5. Refrigerant (Steps 3+4)
= ________________________
5. Add the values from Step 3 and Step 4 and record the resulting value.
This is the amount of refrigerant to weigh-in prior to opening the service
valves.
Table 20. Sealed-System Repairs — Calculating Charge using the Weigh-In method.
1. Measure in feet the distance between the outdoor unit and the indoor
unit and record on Line 1. Include the entire length of the line from the
service valve to the IDU.
New Installation Weigh-In Method Worksheet
1. Line Length (ft)
2. Enter the charge multiplier from Column D.
2. Value from Column D
x ________________________
3. Multiply the total length of refrigerant tubing (Line 1) times the value on
Line 2. Record the result on Line 3 of the Worksheet.
3. Step 1 x Step 2
= ________________________
4. Charge Adder (column C)
+ ________________________
________________________
4. Locate the outdoor equipment size in Column A. Record the value shown
in Column C of Table 16 for Heat Pumps or Table 17 for Air Conditioners.
5. Factory Charge (column B) + ________________________
5. Record the value in Column B to Line 5 of the Worksheet.
6. Refrigerant (Steps 3+4+5) = ________________________
6. Add the values from Step 3, Step 4, and Step 5 and record the resulting
value on Line 6. This is the amount of refrigerant to weigh-in.
Note: The only mode approved for setting or validating system charge is using Charging Mode-Cooling. Charging Mode-Cooling is a variable
speed test mode found in the 850/950 comfort control Technician Menu. Outdoor Temperature must be between 55°F and 120°F with
Indoor Temperature kept between 70°F and 80°F.
18-BC92D1-1D-EN
15
Service Valves
Table 21. Open the Gas Service Valve
Important: Leak check and evacuation must be completed before
opening the service valves.
Cap
Note: Do not vent refrigerant gases into the atmosphere.
1.
Remove valve stem cap.
2.
Using a wrench, turn valve stem 1/4 turn counterclockwise to
the fully open position.
3.
Replace the valve stem cap to prevent leaks. Tighten finger
tight plus an additional 1/6 turn.
1/4 Turn Only
Counterclockwise
for Full Open Position
Valve Stem
Unit Side
of Valve
Pressure Tap Port
Gas Line Connection
Table 22. Open the Liquid Service Valve
Cap
WA R N I N G
S E RV I C E VA LV E S !
Fai l ure t o fol l ow th is war ni ng wi l l re s ul t in a bru pt
r e l e a s e o f s y s t e m ch a r g e a n d m a y r e s u l t i n
p e r s o n a l i n j u r y a n d / o r p r o p e rt y d a m a g e .
Extreme caution should be exercised when
o p e n i n g t h e L i q u i d L i n e Se r v i c e Va l v e . Tu r n v a l v e
s t e m c o u n t e r c l o ck w i s e o n l y u n t i l t h e s t e m
contacts the rolled edge. No torque is required.
Un it S id e
of Se rvice
Va lve
3/16” He x Wre n ch
Ro lle d Ed g e to
Ca p tiva te S te m
Important: Leak check and evacuation must be completed before
opening the service valves.
4.
Remove service valve cap.
5.
Fully insert 3/16” hex wrench into the stem and back out
counterclockwise until valve stem just touches the rolled edge
(approximately five (5) turns).
6.
Replace the valve cap to prevent leaks. Tighten finger tight
plus an additional 1/6 turn.
He x He a d e d
Va lve Sys te m
Se rvice Po rt
16
18-BC92D1-1D-EN
Electrical — Low Voltage
Table 23, p. 17defines the size and combined total maximum length of low voltage wiring from the outdoor unit, to the indoor unit, and to the
thermostat.
Note: The use of color coded low voltage wire is recommended to simplify connections between the outdoor unit, the control, and the indoor
unit.
Note: The maximum total cable length for the entire comfort control communicating system is 500 ft. 18 AWG.
Table 23. Low Voltage Maximum Wire Length
CONTROL WIRING
WIRE SIZE
MAX. WIRE LENGTH
18 AWG
500 Ft. Combined
Table 24. Low Voltage Hook-up Diagrams
Figure 1. Fully Communicating System
Co m m u n ica tin g Ou td o o r Un it
Neatl y b u n d le a ll lo w
vo lta g e w ire s a s s h o w n .
Com m u n ica tin g
Com for t Cont rol
No te 4
D
R
B
Bro w n
Re d
Blu e
Com m u n ica tin g
Indoo r Unit
R
BK
D
Y1
Y2
G
W1
W2
W3
B
O
Bro w n
D - No te 3
No te 1
&
No te 2
Blu e
Re d
No te 5
On ly u s e d fo r
Lo a d S h e d
(Ca p o ff if
not u s e d )
B - Blue
Fiel d w irin g
1.
2.
3.
4.
5.
In communicating mode, unused terminals are non-functional. Do not use.
Terminals present will vary by indoor model.
“D” is the data line. Installer to select a wire color.
If a 3rd party condensate overflow switch is installed, it should be wired in series with R to the thermostat or connected to the External
Switch terminals on the AFC. See External Switch wiring section in the air handler Installer’s Guide.
Wire present only on Variable Speed Outdoor Units.
Note: Anti-oxidizing grease is supplied in the documentation package for use when making low voltage field wiring connections at the outdoor
unit. Apply grease to field wiring before installing wire caps to protect these connections from corrosion.
18-BC92D1-1D-EN
17
Electrical — High Voltage
Table 25. High Voltage Power Supply
WA R N I N G
L I V E E L E C T R I C A L C O M P O N E NT S !
F a i l u r e t o f o l l o w t h i s Wa r n i n g c o u l d r e s u l t i n
p r o p e rt y d a m a g e , s e v e r e p e r s o n a l i n j u r y, o r d e a t h .
Fol lo w a ll el e ct ri ca l s a fe ty p re ca ut io ns whe n
exposed to li ve electrical components. It may be
necessary to work with li ve electrical components
during installation, testing, servicing, and
troubleshooting of this product.
The high voltage power supply must agree with the equipment
nameplate.
Power wiring must comply with national, state, and local codes.
Follow instructions on unit wiring diagram located on the inside of the
control box cover and in the Service Facts document included with the
unit.
Table 26. High Voltage Disconnect Switch
WA R N I N G
H I G H L E A K A G E C U R R E NT !
F a i l u r e t o f o l l o w t h i s Wa r n i n g c o u l d r e s u l t i n
p r o p e rt y d a m a g e , s e v e r e p e r s o n a l i n j u r y, o r d e a t h .
E a rt h c o n n e c t i o n e s s e n t i a l b e f o r e c o n n e c t i n g
e l e c t r i c a l s u p p l y.
Install a separate disconnect switch at the outdoor unit.
For high voltage connections, flexible electrical conduit is
recommended whenever vibration transmission may create a noise
problem within the structure.
Table 27. High Voltage Disconnect Switch
Ground the outdoor unit per national, state, and local code
requirements.
18
18-BC92D1-1D-EN
Integrated Variable Speed Control Board
LED Indicators
EXT.ODT
CDA
EEV
LSOV
J3
T4
PERSONALITY MODULE
J2
PWM
J 10
J5
J9
PSC
(not used)
J8
J 20
FAN
High
Voltage
to Condensor
T3
COMM
COMM
STATUS
STATUS
LOAD SHED
T1 T2
9
1
J1
10
18
HPCO
CHARGE
SOLENOID
(N/A P hase I)
DATA
J6
MONITOR
TOOL
Th e S t a tu s (Gre e n ) a n d
COMM (Am b e r) LEDs a re
lo ca te d in t h e u p p e r rig h t
re g io n o f t h e Co n t ro l
Bo a rd .
Fa u lt m e s s a ge s a re
d is p laye d o n t h e CDA
D R B
J4
ALUMINUM COVER PLATE
LED’S
LED
RATE
DESCRIPTION
INDICATION
1 TIME PER
SECOND
STANDBY/
IDLE
LED
MEDIUM
2 TIMES PER
SECOND
CALL FOR
CAPACITY
COMM
(AMBER)
FAST
5 TIMES PER
SECOND
POWER UP
DELAY
SLOW
STATUS
(GREEN)
SOLID ON
INTERMITTENT
18-BC92D1-1D-EN
RATE
DESCRIPTION
INDICATION
SLOW
1 TIME PER
DEVICE
DEVICE COUNT
FAST
5 TIME PER
SECOND
LOSS OF
COMMUNICATION
TEST MODE
1 FLASH
EVERY 4
SECONDS
HARD
LOCKOUT
19
Start Up
1.
Ensure you have completed the following sections. ”Refrigerant Line Brazing,” p. 12 through ”Electrical — High Voltage,” p. 18
2.
Set System Thermostat to OFF.
3.
Turn on disconnect(s) to apply power to the indoor and outdoor
units.
ON
OFF
4.
Wait 3 hours before starting the unit if the outdoor ambient
temperature is below 85° F.
3 HRS
.
5.
Run the system using the “Charging Mode-Cooling” test mode
found in the 850/950 comfort control. This is the only approved
method for setting the system charge level by subcooling.
Follow the on-screen prompts.
20
18-BC92D1-1D-EN
System Charge Adjustment
Table 28. Temperature Measurements
Check the outdoor temperatures.
120° F
Subcooling using “Charging Mode-Cooling” is the only
recommended method of charging between 55 ° F and 120° F ambient
outdoor temperature.
55° F
For best results the indoor temperature should be kept between 70° F
to 80° F.
80° F
70° F
Table 29. Subcooling Charging Corrections
Subcooling Charging Correction Worksheet
Determine the final subcooling value using total Line Length and Lift
measured in Table 8, p. 9— (Required Refrigerant Line Length) and
the Subcooling Charging Corrections Charts.
Total Line Length (ft)
________________________
Total Vertical Charge (lift) ________________________
(Values from — Required Refrigerant Line Length)
Design Subcooling Value ________________________
(from nameplate or Service Facts)
Final Subcooling Value ________________________
18-BC92D1-1D-EN
21
Subcool Charging Correction Charts
Figure 2. Subcool Charging Corrections — 2.0 Ton
Figure 4. Subcool Charging Corrections — 4.0 Ton
2.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
4.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
REFRIGERANT LINELIFT (FEET)
40
Add 2°
50
Add 1°
40
REFRIGERANT LINELIFT (FEET)
Add 1°
50
30
Use Design Subcoo
25
lin g
15
10
0
20
30
40
50
60
70
80
90
Add 1°
Add 2°
Add 1°
1°
30
Use Design Subcoo
25
1°
lin g
1°
15
10
0
100 110 120 130 140 150
20
30
40
50
60
70
80
90
100 110 120 130 140 150
TOTAL REFRIGERANT LINE LENGTH (FEET)
TOTAL REFRIGERANT LINE LENGTH (FEET)
Figure 3. Subcool Charging Corrections — 3.0 Ton
Figure 5. Subcool Charging Corrections — 5.0 Ton
3.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
5.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
REFRIGERANT LINELIFT (FEET)
Add 2°
REFRIGERANT LINE LIFT (FEET)
Add 1°
50
Add 1°
40
30
Use Design Subcoo
25
lin g
15
10
0
20
30
40
50
60
70
80
90
100 110 120 130 140 150
1°
50
Ad d 1°
25
15
AC: 1-1/8” Va p o r Lin e Lim it
Ad d 1°
10
0
Add
2°
Use De sig n S u b co o lin g
30
HP: 1-1/8” Va p o r Lin e Lim it
20
TOTAL REFRIGERANT LINE LENGTH (FEET)
Ad d 4°
Ad d 1°
40
30
40
50
60
70
1°
80
90
100 110 120 130 140 150
TOTAL REFRIGERANT LINE LENGTH (FEET)
NOTE: 150 ft. le ngth is a pprove d ONLY with 7/8” va por line s.
Refrigerant Charging Chart
R-410A REFRIGERANT CHARGING CHART
DESIGN SUBCOOLING (°F)
LIQUID
TEMP
(°F)
8
9
10
11
12
13
14
LIQUID GAGE PRESSURE (PSI)
55
179
182
185
188
191
195
198
60
195
198
201
204
208
211
215
65
211
215
218
222
225
229
232
70
229
232
236
240
243
247
251
75
247
251
255
259
263
267
271
80
267
271
275
279
283
287
291
85
287
291
296
300
304
309
313
90
309
313
318
322
327
331
336
95
331
336
341
346
351
355
360
100
355
360
365
370
376
381
386
105
381
386
391
396
402
407
413
110
407
413
418
424
429
435
441
115
435
441
446
452
458
464
470
120
464
470
476
482
488
495
501
125
495
501
507
514
520
527
533
Refer to Service Facts or Installer’s Guide for charging method
22
18-BC92D1-1D-EN
Charging the Unit
Table 30. Proper Gage Pressure
Using the ”Refrigerant Charging Chart”, p. 22adjust refrigerant level
to attain proper gage pressure.
Add refrigerant if the Liquid Gage Pressure is lower than the chart
value.
1. Connect gauges to refrigerant bottle and unit as illustrated.
2. Purge all hoses.
3. Open bottle.
4. Stop adding refrigerant when liquid line temperature and Liquid
Gage Pressure match the charging chart.
Note: Recover refrigerant if the Liquid Gage Pressure is higher than
the chart value.
Table 31. Stabilize the system
5.
Wait 20 minutes for the system condition to stabilize between
adjustments.
Note: When the Liquid Line Temperature and Gage Pressure
approximately match the chart, the system is properly
charged.
6. Remove gauges.
7. Replace service port caps to prevent leaks. Tighten finger tight
plus an additional 1/6 turn.
20 MIN.
Table 32. Verify Performance
PRESSURE CURVE S AMPLE
8.
Refer to System Pressure Curves in the Service Facts document to
verify typical performance.
Cooling @1450 SCFM
550
INDOORENTERING
WET BULB CURVES
TOPTO BOTTO
M
71, 67, 63 AND 59 DEG F.
500
DISCHARGE PRESSURE (PSIG)
Heating @1350 SCFM
500
INDOORENTERING
DRY BULB CURVES
TOP TO BOTTOM
80, 70, AND 60 DEG F.
(2)
450
450
400
400
350
350
(4)
(3)
300
300
250
250
(1)
200
40
60
80
200
100
-5
120
5
15
25
35
45
55
65
25
35
45
55
65
OUTDOORTEMPERATURE (Degree F)
170
165
160
140
INDOORENTERING
WET BULB CURVES
TOPTO BOTTO
M
71, 67, 63 AND 59 DEG F.
(2)
SUCTION PRESSURE (PSIG)
155
150
120
110
100
145
(5)
140
(3)
90
135
80
130
70
125
60
50
120
115
40
(1)
110
40
18-BC92D1-1D-EN
INDOORENTERING
DRY BULB CURVES
TOP TO BOTTOM
80, 70, AND 60 DEG F.
130
60
80
30
100
120
-5
5
15
23
Charging the Unit
Table 33. System Information
9.
Record system pressures and temperatures after charging is
complete.
Outdoor model number =
________________________
Measured Outdoor Ambient =
________________________°F
Measured Indoor Ambient =
________________________°F
Measured Liquid Line Temp =
________________________°F
Indoor Wet Bulb =
________________________°F
Liquid Gage Pressure =
________________________ PSIG
Suction Gage Pressure = ________________________ PSIG
Measured Suction Line Temp = ________________________°F
24
18-BC92D1-1D-EN
Communicating Display Assembly (CDA)
NAVIGATION
• To e n te r a n d e xit Te ch n icia n Me n u s , p re s s th e Up /Do w n b u tto n s
s im u lta n e o u s ly fo r 5 s e co n d s .
• To re tu rn to th e Ho m e Scre e n , p re s s th e Up /Do w n b u tto n s
s im u lta n e o u s ly fo r 5 s e co n d s .
• To re tu rn to th e to p le ve l o f a ny m e n u , p re s s th e Le ft/Rig h t b u tto n s
s im u lta n e o u s ly fo r 5 s e co n d s .
• Afte r five m in u te s o f in a ctivity in th e Te ch n icia n Me n u s e ctio n , th e
Ho m e Scre e n w ill b e d is p la ye d . Pre s s in g th e En te r b u tto n fo r
5 s e co n d s w ill in cre a s e th is tim e to 20 m in u te s .
SYSTEM STATUS
XXXXXXXXXXXXXXXX
TECHNICIAN MENUS
MONITOR MENU
Th e Mo n ito r Me n u
d is p la ys in fo rm a tio n
o n Sys te m s ta tu s ,
Drive s ta ts a n d th e
Sys te m Ta ch o m e te r.
ALERT MENU
ALERT HISTORY
MENU
Th e Ale rt Me n u
Th e Ale rt His to ry
d is p la ys a ctive a le rts . m e n u d is p la ys a le rts
sto re d ove r tim e . No te
th a t cle a rin g Ale rt
His to ry w ill a ls o cle a r
Acti ve Ale rts .
Scan to see an
overview video
about the CDA
CONFIG MENU
CONTROL MENU
Th e Co n fig u ra tio n
Me n u is w h e re
Sys te m p a ra m e te rs
a n d o p tio n s a re s e t
a n d re p o rte d .
Th e Co n tro l Me n u
co n ta in s a s e le ctio n o f
u n it fu n ctio n te s ts th a t
a re u s e d to ve rify
o p e ra tio n .
1. Exte rn a l s h u t d o w n
(Lo a d S h e d )
2. Min . Airflo w
3. Blo w e r o n /o ff d e la ys
4. Cu s to m Airflo w
5. PFC (Po w e r Fa cto r
Co rre ctio n )
1. FRC DFT (Fo rce d De fro s t)
2. EEV Te s t
3. Eva cu a tio n
4. Drive Dia g n o s tic Te s t
5. OD Fa n Te s t
N o t e : See the Service Facts found in the control box of
the outdoor unit for more information.
18-BC92D1-1D-EN
25
Defrost Control (Heat Pump only)
Demand Defrost
C DA N a v i ga t i o n t o Fo r c e d D e f r o s t
The demand defrost control measures heat pump
outdoor ambient temperature with a sensor located
outside the outdoor coil. A second sensor located on
the outdoor coil is used to measure the coil
temperature. The difference between the ambient and
the colder coil temperature is the difference or delta-T
measurement. This delta-T measurement is
representative of the operating state and relative
capacity of the heat pump system. By measuring the
change in delta-T, we can determine the need for
defrost. The coil sensor also serves to sense outdoor
coil temperature for termination of the defrost cycle.
Figure 6. CDA Mini Menu
CONFIG
MENU
CONTROL MENU
FRC DFT
PRESS ENTER
MONITOR
MENU
TEST INPROGRESS
CTS <value>
Fau lt I de nt if ic a ti on
TEST C
OMPLETE
A fault condition is indicated by the CDA connected to
the control board inside the heat pump control box.
Defrost Enabled
N OT E S : F o r c e d D e f r o s t
Demand Defrost is enabled with the following inputs to
the Integrated Variable Speed Control (IVSC):
•
Outdoor ambient temperature sensor (ODS-B)
reporting an outdoor temperature at or below 52° F.
•
Coil temperature sensor (CBS) reporting a coil
temperature at or below 35° F.
•
Heat/Cool Demand (HCD) from the communicating
comfort control for at least two minutes or more.
2. FRC DFT TEST can be initiated in heat mode only.
3. Press ENTER to begin forced defrost.
4. Execute Forced Defrost following Forced Defrost
(Defrost terminates on Coil Temperature or
maximum time override of 15 minutes).
5. When test begins, TEST IN PROGRESS displays on
line 1 and Coil Temperature value on line 2.
Defrost Initiation
The calculated temperature difference between the
outdoor temperature sensor and the coil temperature
sensor is called Delta T. Defrost can occur once the
current Delta T exceeds the Delta T initiate value. The
Defrost initiate value is calculated using a clean-coil
Delta T x 2.0, plus a temperature bin correction factor.
Initiation Delta T will automatically adjust based on the
outdoor temperature. This adaptive logic assures a
complete defrost for a range of outdoor temperatures.
DEFROST TERMINATION PROFILES
N o t e : Home Screen, under System Status will display
DEFROST.
6. When test is complete, TEST COMPLETE displays
for 10 seconds.
7.
If there is a defrost fault condition, test terminates
and sends alert to the alert menu.
8. For more information, refer to the Alert Code Tables
in Service Facts and Technical Service Manual (Pub.
No. 34–4301–01) documents.
N o t e : Screens will update as the test proceeds.
65ºF
HIGH TERMINATION TEMP
60ºF
TERMINATION TEMPERATURE
1. System must be running with demand from the
thermostat.
MEDIUM TERMINATION TEMP
55ºF
50ºF
FACTORY TERMINATION TEMP
45ºF
40ºF
35ºF
30ºF
-40ºF
-20ºF
0ºF
20ºF
40ºF
60ºF
AMBIENT TEMPERATURE
26
18-BC92D1-1D-EN
Checkout Procedures
The final phase of the installation is the system Checkout Procedures. The following list represents the most common items covered in a
Checkout Procedure. Confirm all requirements in this document have been met.
All wiring connections are tight and properly secured.
Supply registers and return grilles are open, unobstructed, and
air filter is installed.
Voltage and running current are within limits.
All refrigerant lines (internal and external to equipment) are
isolated, secure, and not in direct contact with each other or
structure.
All braze connections have been checked for leaks. A vacuum of
350 microns provides confirmation that the refrigeration system
is leak free and dry.
Final unit inspection to confirm factory tubing has not shifted
during shipment. Adjust tubing if necessary so tubes do not rub
against each other or any component when unit runs.
Ductwork is sealed and insulated.
All drain lines are clear with joints properly sealed. Pour water
into drain pan to confirm proper drainage.
18-BC92D1-1D-EN
Indoor blower and outdoor fan are operating smoothly and
without obstruction.
Indoor blower motor set on correct speed setting to deliver
required CFM.
Cover panels are in place and properly tightened.
For gas heating systems, manifold pressure has been checked
and all gas line connections are tight and leak free.
For gas heating systems, flue gas is properly vented.
System functions safely and properly in all modes.
Owner has been instructed on use of system and given manual.
27
Notes
Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader in
creating and sustaining safe, comfortable and energy efficient environments, Trane offers a broad portfolio of advanced
controls and HVAC systems, comprehensive building services, and parts. For more information, visit www.Trane.com.
Trane has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice.
©2014 Trane
18-BC92D1-1D-EN
13 Oct 2014
Supersedes 18-BC92D1-1C-EN
(January 2014)