Trane 4TWV0024A1000A, 4TWV0036A1000A, 4TWV0048A1000A, 4TWV0060A1000A, 4TTV0024A1000A Installer's Manual

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Installer’s Guide

Variable Speed ComfortLink™™ II
Heat Pumps and Air Conditioners

4TWV0024A1000A
4TWV0036A1000A
4TWV0048A1000A
4TWV0060A1000A

4TTV0024A1000A
4TTV0036B1000A
4TTV0048A1000A
4TTV0060A1000A
4TTV0061A1000A

NNoottee:: “Graphics in this document are for representation

only. Actual model may differ in appearance.”

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

SSAAFFEETTYY WWAARRNNIINNGG

18-BC89D1-1D-EN

SAFETY SECTION — OUTDOOR

IImmppoorrttaanntt — 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.

WWAARRNNIINNGG

HHAAZZAARRDDOOUUSS VVOOLLTTAAGGEE!!

FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinn
pprrooppeerrttyy ddaammaaggee,, sseevveerree ppeerrssoonnaall iinnjjuurryy,, oorr ddeeaatthh..
DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmoottee
ddiissccoonnnneeccttss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerr
lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr
ccaannnnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd..

WWAARRNNIINNGG

RREEFFRRIIGGEERRAANNTT OOIILL!!

AAnnyy aatttteemmpptt ttoo rreeppaaiirr aa cceennttrraall aaiirr ccoonnddiittiioonniinngg
pprroodduucctt mmaayy rreessuulltt iinn pprrooppeerrttyy ddaammaaggee,, sseevveerree
ppeerrssoonnaall iinnjjuurryy,, oorr ddeeaatthh..
TThheessee uunniittss uussee RR--441100AA rreeffrriiggeerraanntt wwhhiicchh ooppeerraatteess
aatt 5500 ttoo 7700%% hhiigghheerr pprreessssuurreess tthhaann RR--2222.. UUssee oonnllyy
RR--441100AA aapppprroovveedd sseerrvviiccee eeqquuiippmmeenntt.. RReeffrriiggeerraanntt
ccyylliinnddeerrss aarree ppaaiinntteedd aa ““RRoossee”” ccoolloorr ttoo iinnddiiccaattee
tthhee ttyyppee ooff rreeffrriiggeerraanntt aanndd mmaayy ccoonnttaaiinn aa ““ddiipp””
ttuubbee ttoo aallllooww ffoorr cchhaarrggiinngg ooff lliiqquuiidd rreeffrriiggeerraanntt iinnttoo
tthhee ssyysstteemm.. AAllll RR--441100AA ssyysstteemmss wwiitthh vvaarriiaabbllee
ssppeeeedd ccoommpprreessssoorrss uussee aa PPVVEE ooiill tthhaatt rreeaaddiillyy
aabbssoorrbbss mmooiissttuurree ffrroomm tthhee aattmmoosspphheerree.. TToo lliimmiitt
tthhiiss ““hhyyggrroossccooppiicc”” aaccttiioonn,, tthhee ssyysstteemm sshhoouulldd
rreemmaaiinn sseeaalleedd wwhheenneevveerr ppoossssiibbllee.. IIff aa ssyysstteemm hhaass
bbeeeenn ooppeenn ttoo tthhee aattmmoosspphheerree ffoorr mmoorree tthhaann 44
hhoouurrss,, tthhee ccoommpprreessssoorr ooiill mmuusstt bbee rreeppllaacceedd.. NNeevveerr
bbrreeaakk aa vvaaccuuuumm wwiitthh aaiirr aanndd aallwwaayyss cchhaannggee tthhee
ddrriieerrss wwhheenn ooppeenniinngg tthhee ssyysstteemm ffoorr ccoommppoonneenntt
rreeppllaacceemmeenntt..

CCAAUUTTIIOONN

HHOOTT SSUURRFFAACCEE!!

MMaayy ccaauussee mmiinnoorr ttoo sseevveerree bbuurrnniinngg.. FFaaiilluurree ttoo
ffoollllooww tthhiiss CCaauuttiioonn ccoouulldd rreessuulltt iinn pprrooppeerrttyy
ddaammaaggee oorr ppeerrssoonnaall iinnjjuurryy..
DDoo nnoott ttoouucchh ttoopp ooff ccoommpprreessssoorr..

CCAAUUTTIIOONN

CCOONNTTAAIINNSS RREEFFRRIIGGEERRAANNTT!!

FFaaiilluurree ttoo ffoollllooww pprrooppeerr pprroocceedduurreess ccaann rreessuulltt iinn
ppeerrssoonnaall iillllnneessss oorr iinnjjuurryy oorr sseevveerree eeqquuiippmmeenntt
ddaammaaggee..
SSyysstteemm ccoonnttaaiinnss ooiill aanndd rreeffrriiggeerraanntt uunnddeerr hhiigghh
pprreessssuurree.. RReeccoovveerr rreeffrriiggeerraanntt ttoo rreelliieevvee pprreessssuurree
bbeeffoorree ooppeenniinngg ssyysstteemm..

CCAAUUTTIIOONN

GGRROOUUNNDDIINNGG RREEQQUUIIRREEDD!!

FFaaiilluurree ttoo iinnssppeecctt oorr uussee pprrooppeerr sseerrvviiccee ttoooollss mmaayy
rreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee oorr ppeerrssoonnaall iinnjjuurryy..
RReeccoonnnneecctt aallll ggrroouunnddiinngg ddeevviicceess.. AAllll ppaarrttss ooff tthhiiss
pprroodduucctt tthhaatt aarree ccaappaabbllee ooff ccoonndduuccttiinngg eelleeccttrriiccaall
ccuurrrreenntt aarree ggrroouunnddeedd.. IIff ggrroouunnddiinngg wwiirreess,, ssccrreewwss,,
ssttrraappss,, cclliippss,, nnuuttss,, oorr wwaasshheerrss uusseedd ttoo ccoommpplleettee aa
ppaatthh ttoo ggrroouunndd aarree rreemmoovveedd ffoorr sseerrvviiccee,, tthheeyy mmuusstt
bbee rreettuurrnneedd ttoo tthheeiirr oorriiggiinnaall ppoossiittiioonn aanndd pprrooppeerrllyy
ffaasstteenneedd..

WWAARRNNIINNGG

SSEERRVVIICCEE VVAALLVVEESS!!

FFaaiilluurree ttoo ffoollllooww tthhiiss wwaarrnniinngg wwiillll rreessuulltt iinn aabbrruupptt
rreelleeaassee ooff ssyysstteemm cchhaarrggee aanndd mmaayy rreessuulltt iinn
ppeerrssoonnaall iinnjjuurryy aanndd//oorr pprrooppeerrttyy ddaammaaggee..
EExxttrreemmee ccaauuttiioonn sshhoouulldd bbee eexxeerrcciisseedd wwhheenn
ooppeenniinngg tthhee LLiiqquuiidd LLiinnee SSeerrvviiccee VVaallvvee.. TTuurrnn vvaallvvee
sstteemm ccoouunntteerrcclloocckkwwiissee oonnllyy uunnttiill tthhee sstteemm
ccoonnttaaccttss tthhee rroolllleedd eeddggee.. NNoo ttoorrqquuee iiss rreeqquuiirreedd..

WWAARRNNIINNGG

BBRRAAZZIINNGG RREEQQUUIIRREEDD!!

FFaaiilluurree ttoo iinnssppeecctt lliinneess oorr uussee pprrooppeerr sseerrvviiccee ttoooollss
mmaayy rreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee oorr ppeerrssoonnaall
iinnjjuurryy..
iiff uussiinngg eexxiissttiinngg rreeffrriiggeerraanntt lliinneess mmaakkee cceerrttaaiinn tthhaatt
aallll jjooiinnttss aarree bbrraazzeedd,, nnoott ssoollddeerreedd..

WWAARRNNIINNGG

HHIIGGHH LLEEAAKKAAGGEE CCUURRRREENNTT!!

FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinn
pprrooppeerrttyy ddaammaaggee,, sseevveerree ppeerrssoonnaall iinnjjuurryy,, oorr ddeeaatthh..
EEaarrtthh ccoonnnneeccttiioonn eesssseennttiiaall bbeeffoorree ccoonnnneeccttiinngg
eelleeccttrriiccaall ssuuppppllyy..

©2014 Trane

18-BC89D1-1D-EN

+VDC -VDC

ELECTRICAL HAZARD

Failure to follow this warning
coul d result in personal
injury or death.

WAIT TWO (2) MINUTES
after disconnecting power
prior to touching electrical
components as they may
hol d a dangerous charge of
400VDC, then verify DC
Voltage is less than 42 VDC at
inverter test points labeled
+VDC and -VDC befor e
ser vicing board.

400 VOLTS

WARNING

+ VDC

and

- VDC

CAUTION - HOT SURFACE

Scan to see an
overview video
about the IVSC
Board

SSAAFFEETTYY SSEECCTTIIOONN —— OOUUTTDDOOOORR

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. Operating Range

Cooling 55° F to 120° F

Heating -10° F to 66° F

18-BC89D1-1D-EN

3

Table of Contents

Unit Location Considerations. . . . . . . . . . . . . . . 5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Coastal Considerations . . . . . . . . . . . . . . . . 7

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

Electrical — Low Voltage . . . . . . . . . . . . . . . . . . 17

Electrical — High Voltage . . . . . . . . . . . . . . . . . . 18

Integrated Variable Speed Control Board

LED Indicators . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 19

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

4

18-BC89D1-1D-EN

Unit Location Considerations

D

H

W

50’

Ma

x

Line

Lift

Sta n dard

Line Se t

150’ Max

Line Length

50
Max
Line

Lift

100’

M

ax

Line

Length

100’ Max

Line

Length

Refer to (a), (b), and (c) footnotes for

specific m odel details

Table 2. Unit Dimensions and Weight

Models

4TWV0024A 48 x 30 x 33 206

4TWV0036A 50 x 34 x 37 243

4TWV0048A 50 x 34 x 37 255

4TWV0060A 54 x 34 x 37 265

4TTV0024A 48 x 30 x 33 207

4TTV0036B 50 x 34 x 37 239

4TTV0048A 50 x 34 x 37 259

4TTV0060A 54 x 34 x 37 265

4TTV0061A 54 x 34 x 37 303

* 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.

Table 3. Refrigerant Line and Service Valve Connection Sizes

Model

4TWV0024A

4TWV0036A

4TWV0048A

4TWV0060A

4TTV0024A

4TTV0036B

4TTV0048A

4TTV0060A

4TTV0061A

1 — 1/8

1 — 1/8

1 — 1/8

H x D x W (in) Weight * (lb)

Rated Line Sizes

Vapor

Liquid

Line

(a)

5/8

(a)

3/4

(a)

7/8

(b)

(a)

5/8

(a)

3/4

(a)

7/8

(c)

(d)

Line

3/8 5/8 3/8

3/8 3/4 3/8

3/8 7/8 3/8

3/8 7/8 3/8

3/8 5/8 3/8

3/8 3/4 3/8

3/8 7/8 3/8

3/8 7/8 3/8

3/8 7/8 3/8

Service Valve

Connection Sizes

Vapor Line

Connection

Liquid Line

Connection

(a)

The max length of refrigerant lines from outdoor to indoor unit MUST NOT exceed 150 feet. The max vertical change MUST NOTexceed 50 feet.

(b)

The max length of refrigerant lines from the outdoor to indoor unit MUST NOTexceed 80 feet. The max vertical change MUST NOT exceed 10 feet.

(c)

the max length of refrigerant lines from outdoor to indoor unit MUST NOT exceed 80 feet. The max vertical change MUST NOTexceed 25 feet.

(d)

the max length of refrigerant lines from outdoor to indoor unit MUST NOT exceed 80 feet. The max vertical change MUST NOTexceed 25 feet.

18-BC89D1-1D-EN

5

Min. 12” to
Shrubbe ry

Avoid Install
Nea r Bedrooms

Min 5’ Unre stricte d

Access Pa nel

Min 3’
Unrestricted

Min. 12” to
Shrubbery

Min. 12”
to Wall

UUnniitt LLooccaattiioonn CCoonnssiiddeerraattiioonnss

Table 4. Alternate Refrigerant Line and Service Valve Connection Sizes

Service Valve

Connection Sizes

Vapor Line

Connection

Liquid Line

Connection

Model

4TWV0024A

4TWV0036A

4TWV0048A

4TWV0060A

Alternate Line Sizes

3/4"

Vapor

Line

(a)

Liquid

Line

5/16" 5/8" 3/8"

5/8" 5/16" 3/4" 3/8"

(b)

7/8"

5/16" 3/4" 3/8"

3/4" 3/8" 7/8" 3/8"

3/4" 3/8" 7/8" 3/8"

7/8" 3/8" 7/8" 3/8"

Model

4TTV0024A

4TTV0036B

4TTV0048A

4TTV0060A

4TTV0061A

(a)

The max length of refrigerant lines from outdoor to indoor unit MUST NOT exceed 150 feet. The max vertical change MUST NOTexceed 50 feet.

(b)

The max length of refrigerant lines from outdoor to indoor unit MUST NOT exceed 80 feet. The max vertical change MUST NOTexceed 25 feet.

Vapor

Line

Liquid

Line

3/4" 5/16" 5/8" 3/8"

5/8" 5/16" 3/4" 3/8"

7/8" 5/16" 3/4" 3/8"

3/4" 3/8" 7/8" 3/8"

3/4" 3/8" 7/8" 3/8"

7/8" 3/8" 7/8" 3/8"

3/4" 3/8" 7/8" 3/8"

7/8" 3/8" 7/8" 3/8"

Alternate Line Sizes

Service Valve

Connection Sizes

Vapor Line

Connection

Liquid Line

Connection

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.

• 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.

6

18-BC89D1-1D-EN

Min. 12”

Sn ow

Barrier

3-12” Elevation

Snow L egs

Pad

UUnniitt LLooccaattiioonn CCoonnssiiddeerraattiioonnss

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.

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-BC89D1-1D-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:

• 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.

8

18-BC89D1-1D-EN

Refrigerant Line Considerations

Line Length

Liquid Li ne

Vapor Line

Insulati on

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.

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.

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-BC89D1-1D-EN

9

8 Feet Maximum

Side View

8 Feet Maximum

Joist/Rafter

Isolator

Line Set

RReeffrriiggeerraanntt LLiinnee CCoonnssiiddeerraattiioonnss

Table 10. Reuse Existing Refrigerant Lines

CCAAUUTTIIOONN

RREEFFRRIIGGEERRAANNTT!!

FFaaiilluurree ttoo iinnssppeecctt oorr uussee pprrooppeerr sseerrvviiccee ttoooollss mmaayy
rreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee oorr ppeerrssoonnaall iinnjjuurryy..
IIff uussiinngg eexxiissttiinngg rreeffrriiggeerraanntt lliinneess mmaakkee cceerrttaaiinn tthhaatt
aallll jjooiinnttss aarree bbrraazzeedd,, nnoott ssoollddeerreedd..

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 SS-

APG006–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

Secure Vapor Line from joists using isolators every 8 ft. Secure Liquid Line directly to insulated Vapor Line using tape, wire, or other appropriate

10

method every 8 ft.

18-BC89D1-1D-EN

Table 13. Isolation In Wall Spaces

Side View

Isolator

Line Set

8 Feet Maximum

Wall

8 Feet Maximum

Wall

Sealant
Insulation

Vapor Line

Duct Work

Isolator

Line Set

DO NOT han g line sets from d uct work

RReeffrriiggeerraanntt LLiinnee CCoonnssiiddeerraattiioonnss

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

18-BC89D1-1D-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-BC89D1-1D-EN

Table 15. Braze the Refrigerant Lines (continued)

3-4” from valve

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. 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.

6. 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.

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.

RReeffrriiggeerraanntt LLiinnee BBrraazziinngg

18-BC89D1-1D-EN

13

Refrigerant Line Leak Check

150 PSIG

0350

Microns

ON

OFF

1 MIN.

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.

Note: Remove nitrogen pressure and repair any leaks before

continuing.

Refrigerant Line and Indoor Coil Evacuation

IImmppoorrttaanntt:: Do not open the service valves until the

14

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.

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.

18-BC89D1-1D-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

B C D

Table 18. Air Conditioners

A

Charge

multiplier for

interconnecting

refrigerant

Model

Model

Factory

Charge

Charge

adder for

Indoor Coil

tube length

024 7 lb. 6 oz. 6 oz.

036 9 lb. 8 oz. 12 oz.

048 10 lb. 12 oz. 15 oz.

060 11 lb. 14 oz.

1 lb., 2 oz. 0.6 oz/ft

0.6 oz/ft

0.6 oz/ft

0.6 oz/ft

024 7 lb. 6 oz. 6 oz.

036 9 lb. 6 oz. 12 oz.

048 11 lb. 1 oz.

060 11 lb. 14 oz.

061 12 lb. 7 oz.

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.

2. Enter the charge multiplier from Column D.

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.

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. 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.

New Installation Weigh-In Method Worksheet

1. Line Length (ft) ________________________

2. Value from Column D x ________________________

3. Step 1 x Step 2 = ________________________

4. Charge Adder (column C) + ________________________

5. Refrigerant (Steps 3+4) = ________________________

B C D

Factory

Charge

Charge

adder for

Indoor Coil

1 lb., 0 oz. 0.6 oz/ft

1 lb., 2 oz. 0.6 oz/ft

1 lb., 4 oz. 0.6 oz/ft

Charge

multiplier for

interconnect-

ing refrigerant

tube length

0.6 oz/ft

0.6 oz/ft

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.

2. Enter the charge multiplier from Column D.

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.

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. Record the value in Column B to Line 5 of the Worksheet.

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-BC89D1-1D-EN

New Installation Weigh-In Method Worksheet

1. Line Length (ft) ________________________

2. Value from Column D x ________________________

3. Step 1 x Step 2 = ________________________

4. Charge Adder (column C) + ________________________

5. Factory Charge (column B) + ________________________

6. Refrigerant (Steps 3+4+5) = ________________________

15

Service Valves

Cap

1/4 Turn Only
Counterclockwise
for Full Open Position

Valve Stem

Unit Side
of Valve

Pressure Tap Port

Gas Line Connection

Cap

3/16” Hex Wrench

Rolled Edge to
Captivate Stem

Hex Headed
Valve System

Service Port

Unit Side
of Service
Valve

Table 21. Open the Gas Service Valve

Important: Leak check and evacuation must be completed before

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

3. Replace the valve stem cap to prevent leaks. Tighten finger

Table 22. Open the Liquid Service Valve

opening the service valves.

the fully open position.

tight plus an additional 1/6 turn.

WWAARRNNIINNGG

SSEERRVVIICCEE VVAALLVVEESS!!

FFaaiilluurree ttoo ffoollllooww tthhiiss wwaarrnniinngg wwiillll rreessuulltt iinn aabbrruupptt
rreelleeaassee ooff ssyysstteemm cchhaarrggee aanndd mmaayy rreessuulltt iinn
ppeerrssoonnaall iinnjjuurryy aanndd//oorr pprrooppeerrttyy ddaammaaggee..
EExxttrreemmee ccaauuttiioonn sshhoouulldd bbee eexxeerrcciisseedd wwhheenn
ooppeenniinngg tthhee LLiiqquuiidd LLiinnee SSeerrvviiccee VVaallvvee.. TTuurrnn vvaallvvee
sstteemm ccoouunntteerrcclloocckkwwiissee oonnllyy uunnttiill tthhee sstteemm
ccoonnttaaccttss tthhee rroolllleedd eeddggee.. NNoo ttoorrqquuee iiss rreeqquuiirreedd..

Important: Leak check and evacuation must be completed before

4. Remove service valve cap.

5. Fully insert 3/16” hex wrench into the stem and back out

6. Replace the valve cap to prevent leaks. Tighten finger tight

opening the service valves.

counterclockwise until valve stem just touches the rolled edge
(approximately five (5) turns).

plus an additional 1/6 turn.

16

18-BC89D1-1D-EN

Electrical — Low Voltage

Neatl y bundle all low
voltag e wire s as sh ow n.

Com m unicating
Com fort Cont rol

W1
W2
W3

G

Y2

B

O

BK
D
Y1

R

Field wiring

Brown

Blue

Brown
Blue

Red

B - Blue

D - Note 3

D
R
B

Note 1
&
Note 2

Red

Only used for
Load Shed
(Cap off if
not us ed)

Com m unicating
Indoo r Unit

Note 4

Note 5

Comm unicating Outdoor Unit

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

1. In communicating mode, unused terminals are non-functional. Do not use.

2. Terminals present will vary by indoor model.

3. “D” is the data line. Installer to select a wire color.

4. 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.

5. 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-BC89D1-1D-EN

17

Electrical — High Voltage

Table 25. High Voltage Power Supply

WWAARRNNIINNGG

LLIIVVEE EELLEECCTTRRIICCAALL CCOOMMPPOONNEENNTTSS!!

FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinn
pprrooppeerrttyy ddaammaaggee,, sseevveerree ppeerrssoonnaall iinnjjuurryy,, oorr ddeeaatthh..
FFoollllooww aallll eelleeccttrriiccaall ssaaffeettyy pprreeccaauuttiioonnss wwhheenn
eexxppoosseedd ttoo lliivvee eelleeccttrriiccaall ccoommppoonneennttss.. IItt mmaayy bbee
nneecceessssaarryy ttoo wwoorrkk wwiitthh lliivvee eelleeccttrriiccaall ccoommppoonneennttss
dduurriinngg iinnssttaallllaattiioonn,, tteessttiinngg,, sseerrvviicciinngg,, aanndd
ttrroouubblleesshhoooottiinngg ooff tthhiiss pprroodduucctt..

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

WWAARRNNIINNGG

HHIIGGHH LLEEAAKKAAGGEE CCUURRRREENNTT!!

FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinn
pprrooppeerrttyy ddaammaaggee,, sseevveerree ppeerrssoonnaall iinnjjuurryy,, oorr ddeeaatthh..
EEaarrtthh ccoonnnneeccttiioonn eesssseennttiiaall bbeeffoorree ccoonnnneeccttiinngg
eelleeccttrriiccaall ssuuppppllyy..

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-BC89D1-1D-EN

Integrated Variable Speed Control Board

FAN

ALUMINUM COVER PLATE

LSOV

EEV

LOAD

MONITOR

TOOL

SHED

CDA

EXT.ODT

PERSONALITY MODULE

STATUS

COMM

T4

T3

T1

T2

HPCO

DATA

CHARGE

SOLENOID

(N/A Phase I)

10

1

18

9

J1

J6

J4

DRB

J8

J9

J3

J10

J2

J5

J20

PSC

(no t u se d)

PWM

STATUS

COMM

High
Voltage
to Con de ns or

The Status (Green) and
COMM (Am ber) LEDs are
located in t he upper right
region of the Control
Board.

Fau lt m es sages are
displayed on the CDA

LED Indicators

LLEEDD’’SS

LED RATE

MEDIUM

STATUS

(GREEN)

SOLID ON TEST MODE

INTERMITTENT

SLOW

FAST

DESCRIP-

TION

1 TIME PER
SECOND

2 TIMES PER
SECOND

5 TIMES PER
SECOND

1 FLASH
EVERY 4
SECONDS

INDICA-

TION

STANDBY/
IDLE

CALL FOR
CAPACITY

POWER UP
DELAY

HARD
LOCKOUT

LED RATE DESCRIPTION INDICATION

COMM

(AMBER)

SLOW

FAST

1 TIME PER
DEVICE

5 TIME PER
SECOND

DEVICE COUNT

LOSS OF
COMMUNICATION

18-BC89D1-1D-EN

19

Start Up

ON

OFF

3 HRS.

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.

20

4. Wait 3 hours before starting the unit if the outdoor ambient
temperature is below 85° F.

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.

18-BC89D1-1D-EN

System Charge Adjustment

120° F

55° F

80° F
70° F

Table 28. Temperature Measurements

Check the outdoor temperatures.

Subcooling using “Charging Mode-Cooling” is the only
recommended method of charging between 55 ° F and 120° F ambient
outdoor temperature.

For best results the indoor temperature should be kept between 70° F
to 80° F.

Table 29. Subcooling Charging Corrections

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.

Subcooling Charging Correction Worksheet

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-BC89D1-1D-EN

21

Subcool Charging Correction Charts

2.0 TON S UBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

TOTAL REFRIGERANT LINE LENGTH (FEET)

Add 1°

Add 1°

Use Design Subcoo ling

Add 2°

70 80 90 100 110 120 130 140 1506050403020

50
40
30
25
15
10

0

REFRIGERANT LINE LIFT (FEET)

3.0 TON S UBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

TOTAL REFRIGERANT LINE LENGTH (FEET)

Add 1°

Add 1°

Use Design Subcoo ling

Add 2°

70 80 90 100 110 120 130 140 1506050403020

50
40
30
25
15
10

0

REFRIGERANT LINE LIFT (FEET)

4.0 TON S UBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

TOTAL REFRIGERANT LINE LENGTH (FEET)

Add 1°

1°

1°

1°

Add 1°

Use Design Subcoo ling

Add 2°

70 80 90 100 110 120 130 140 1506050403020

50
40
30
25
15
10

0

REFRIGERANT LINE LIFT (FEET)

5.0 TON S UBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

NOTE: 15 0 ft. le ngth is approv ed ONLY with 7/8” vap or lines .

1°

1°

TOTAL REFRIGERANT LINE LENGTH (FEET)

Add 1°

Add 1°

Add 1°

Use Desig n Subcooling

Add

2°

Add 4°

70 80 90 100 11 0 120 130 140 15060

50

40

3020

50
40
30
25
15
10

0

REFRIGERANT LINE LIFT (FEET)

HP: 1-1 /8” Vapor Line Lim it

AC: 1-1/8 ” Vap or Line Limit

Figure 2. Subcool Charging Corrections — 2.0 Ton

Figure 3. Subcool Charging Corrections — 3.0 Ton

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)

Figure 4. Subcool Charging Corrections — 4.0 Ton

Figure 5. Subcool Charging Corrections — 5.0 Ton

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-BC89D1-1D-EN

Charging the Unit

20 MIN.

PRESSURE CURVE SAMPLE

Cooling @ 1450 SCFM Heating @ 1350 SCFM

DISCHARGE PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

SUCTION PRESSURE (PSIG)

110

115

120

125

130

135

140

145

150

155

160

165

170

40 60 80 100 120

200

250

300

350

400

450

500

550

40 60 80 100 120

(1)

(1)

(3)

(3)

(5)

(4)

(2)

(2)

INDOOR ENTERING
WET BULB CURVES
TOP TO BOTTOM
71, 67, 63 AND 59 DEG F.

INDOOR ENTERING
WET BULB CURVES
TOP TO BOTTOM
71, 67, 63 AND 59 DEG F.

30

40

50

60

70

80

90

100

110

120

130

140

-5 5 15 25 35 45 55 65

200

250

300

350

400

450

500

-5 5 15 25 35 45 55 65

INDOOR ENTERING
DRY BULB CURVES
TOP TO BOTTOM
80, 70, AND 60 DEG F.

INDOOR ENTERING
DRY BULB CURVES
TOP TO BOTTOM
80, 70, AND 60 DEG F.

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.

Table 32. Verify Performance

8. Refer to System Pressure Curves in the Service Facts document to
verify typical performance.

18-BC89D1-1D-EN

23

CChhaarrggiinngg tthhee UUnniitt

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

Measured Suction Line Temp = ________________________°F

Indoor Wet Bulb = ________________________°F

Liquid Gage Pressure = ________________________ PSIG

Suction Gage Pressure = ________________________ PSIG

24

18-BC89D1-1D-EN

Communicating Display Assembly (CDA)

1. External shut d own
(Loa d Sh ed)

2. Min. Airflow

3. Blower on/off delays

4. Custom Airflow

5. PFC (Powe r Factor
Correction)

1. FRC DFT (Force d Defrost)

2. EEV Test

3. Evacua tio n

4. Drive Diagn ostic Tes t

5. OD Fan Tes t

TECHNICIAN MENUS

SYSTEM STATUS

XXXXXXXXXXXXXXXX

NAVIGATION

• To enter and exit Technician Menus, pres s the Up/Do wn buttons
s im ultaneou sly for 5 se co nds.

• To return to the Ho me Screen, press th e Up/Dow n bu ttons
s im ultaneou sly for 5 se co nds.

• To return to the top level of any m enu , p re ss the Left/Right buttons
s im ultaneou sly for 5 se co nds.

• After five min utes o f inactivity in th e Technician Menu sectio n, the
Ho m e Screen will be disp layed. Press ing the Enter button fo r
5 seco nds will increas e this time to 20 minutes.

ALERT HISTORY

MENU

ALERT MENU

CONFIG MENU

CONTROL MENU

MONITOR MENU

The Monitor Me nu
displays in formation
on System statu s,
Drive s tats and the
System Tach omete r.

The Alert His tory
menu displays alerts
sto red over time. Note
that clearing Alert
History will also cle ar
Active Alerts.

The Alert Menu
displays active alerts.

The Co nfiguration
Menu is whe re
System p arameters
and options are s et
and reported.

The Co ntrol Me nu
contain s a selection of
unit function tests that
are used to verify
operation.

Scan to see an
overview video
about the CDA

NNoottee:: See the Service Facts found in the control box of

the outdoor unit for more information.

18-BC89D1-1D-EN

25

Defrost Control (Heat Pump only)

65ºF

60ºF

55ºF

50ºF

45ºF

40ºF

35ºF

30ºF

-40ºF -20ºF 0ºF 20ºF 40ºF 60ºF

FACTORY TERMINATION TEMP

AMBIENT TEMPERATURE

TERMINATION TEMPERATURE

MEDIUM TERMINATION TEMP

HIGH TERMINATION TEMP

DEFROST TERMINATION PROFILES

FRC DFT

PRESS ENTER

TEST IN PROGRESS

CTS <value>

TEST COMPLETE

CONTROL MENU

CONFIG

MENU

MONITOR

MENU

DDeemmaanndd DDeeffrroosstt

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.

FFaauulltt IIddeennttiiffiiccaattiioonn

A fault condition is indicated by the CDA connected to
the control board inside the heat pump control box.

DDeeffrroosstt EEnnaabblleedd

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.

DDeeffrroosstt IInniittiiaattiioonn

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 Twill automatically adjust based on the
outdoor temperature. This adaptive logic assures a
complete defrost for a range of outdoor temperatures.

CCDDAA NNaavviiggaattiioonn ttoo FFoorrcceedd DDeeffrroosstt

Figure 6. CDA Mini Menu

NNOOTTEESS:: FFoorrcceedd DDeeffrroosstt

1. System must be running with demand from the
thermostat.

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.

NNoottee:: 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.

NNoottee:: Screens will update as the test proceeds.

26

18-BC89D1-1D-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.

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.

Supply registers and return grilles are open, unobstructed, and
air filter is installed.

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.

18-BC89D1-1D-EN

27

NNootteess

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-BC89D1-1D-EN

Supersedes 18-BC89D1-1C-EN (January 2014)

13 Oct 2014