Trane 4TTX3, 4TTX4 User Manual

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18-AC50D1-3

Condensing n

4TTX3; 4TTX4

ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES

IMPORTANT -- This Document is customer property and is to remain with this unit. Please return to service information

pack upon completion of work.

These instructions do not cover all variations in systems nor provide for every possible contingency to

be met in connection with installation. All phases of

this installation must comply with NATIONAL, STATE

AND LOCAL CODES. Should further information be

desired or should particular problems arise which are not covered sufficiently for the purchaser's purposes, the matter should be referred to your installing dealer or local distributor.

A. GENERAL

The following instructions cover 4TTX3; 4TTX4 Condensing Units.

NOTICE:

These outdoor units may be used with indoor units

equipped with Thermostatic Expansion Valve or

Accutron TM Flow Control Check Valve (F.C.C.V.) assembly

for refrigerant flow control only.

UNiT CONTAINS R-410A REFRIGERANT!

R-410A OPERATING PRESSURE EXCEEDS THE

LiMiT OF R-22. PROPER SERVICE EQUIPMENT IS

REQUIRED. FAILURE TO USE PROPER SERVICE

TOOLS MAY RESULT IN EQUIPMENT DAMAGE OR

PERSONAL INJURY.

SERVICE

USE ONLY R-410A REFRIGERANT AND

APPROVED POE COMPRESSOR OiL.

5 FT. ABOVE UNIT=UNRESTRICTED

These units use R-410A refrigerant which operates at 50

to 70% higher pressures than R-22. Use only R-410A

approved service equipment. Refrigerant cylinders are painted a "Rose" color to indicate the type of refrigerant and may contain a "dip" tube to allow for charging of liquid refrigerant into the system. All R-410A systems use a POE oil that readily absorbs moisture from the atmosphere. To limit this "hygroscopic" action, the system should remain sealed whenever possible. Never break a vacuum with air and always change the driers when opening the system for component replacement.

Check for transportation damage after unit is uncrated. Report promptly, to the carrier, any damage found to the unit.

To determine the electrical power requirements of the unit, refer to the nameplate of the unit. The electrical power available must agree with that listed on the nameplate.

B. LOCATION & PREPARATION

OF THE UNiT

1. When removing unit from the pallet, notice the tabs on the basepan. Remove tabs by cutting with a sharp tool as

shown in Figure 2 (see page 2).

2. The unit should be set on a level support pad at least as large as the unit base pan, such as a concrete slab. If this is not the application used please refer to application

bulletin "XLi-APG**-EN" (* latest revision number).

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3. The support pad must NOT be in direct contact with any structure. Unit must be positioned a minimum of 12" from any wall or surrounding shrubbery to insure adequate airflow. Clearance must be provided in front of control box (access panels) & any other side requiring

service access to meet National Electrical Code. Also, the unit location must be far enough away from any

structure to prevent excess roof run-offwater from pouring directly on the unit. Do not locate unit(s) close

to bedroom(s).

4. The top discharge area must be unrestricted for at least five (5) feet above the unit.

5. When the outdoor unit is mounted on a roof', be sure the roof will support the unit's weight. Properly selected isolation is recommended to prevent sound or vibration transmission to the building structure.

6. The maximum length of refrigerant lines from outdoor to indoor unit should NOT exceed sixty (60) feet.

7. If outdoor unit is mounted above the air handler, maximum lift should not exceed sixty (60) feet (suction line). If air handler is mounted above condensing unit, maximum lift should not exceed sixty (60) feet (liquid

line).

NOTE: Refer to "Refrigerant Piping Software" Pub. No. 32-3312-0",

and "Refrigerant Piping Manual Pub. No. 32-3009=0* (the position of the * denotes the latest revision no.)

8. Locate and install indoor coil or air handler in accor- dance with instruction included with that unit.

C. ACCUTRON TM FLOW CONTROL VALVE

If the indoor unit System Refrigerant Flow control is an Accutron TM orifice and check valve assembly, an orifice size change may be necessary.

BRAZE TYPE INDOOR END

SEALING CAP

ACCUTRON TM

oo> -" ADAP'E""xi'2)

\ FLQWCQN,.QL

SSH

_ LIQUID LINE

FIELD SUPPLIED

The outdoor model determines the required orifice size. Check the listed orifice size on nameplate of the selected outdoor model. If the indoor unit is factory shipped with a diffhrent orifice size, the orifice must be changed to obtain system rated performance.

NOTE:

Attach R-410A CAUTION Label (located in documentation

package) to access panel of indoor section.

IMPORTANT:

The outdoor unit is shipped withthe proper size orifice and a stick-on orifice size label in an envelope attached to the outdoor unit. Outdoor unit nameplate will have correct orifice size specified as BA YFCCV---A for rated performance.

D. iNSTALLiNG REFRIGERANT LINES

If using existing refrigerant lines make certain that all joints

are brazed, not soldered.

Condensing units have provisions for braze connections. Pressure taps are provided on the service valves of outdoor

unit for compressor suction and liquid pressures. The indoor end of the recommended refrigerant line sets may

be straight or with a 90 degree bend, depending upon situa- tion requirements. This should be thoroughly checked out before ordering refrigerant line sets.

The gas line must always be insulated.

In scroll compressor applications, dome temperatures may be hot. Do not touch top of compressor, may cause minor to severe burning.

The units are factory charged with the system charge required when using fifteen (15) feet of connecting line. Unit

nameplate charge is the same. Final refrigerant charge adjustment is necessary. Use

the Charging Charts in the outdoor unit Service Facts.

1. Determine the most practical way to run the lines.

2. Consider types of bends to be made and space limitations.

NOTE:

Large diameter tubing will be very difficult to rebend once it

has been shaped.

3. Determine the best starting point for routing the refrigerant tubing -- INSIDE OR OUTSIDE THE

STRUCTURE.

Provide a pull-thru hole of sufficient size to allow both liquid and gas lines.

Be sure the tubing is of sufficient length.

Uncoil the tubing -- do not ldnk or dent.

Route the tubing making all required bends and properly secure the tubing before maMng connections.

To prevent a noise within the building structure due to vibration transmission from the refrigerant lines, the following precautions should be taken:

a. When the refrigerant lines have to be fastened to floor

joists or other framing in a structure, use isolation

type hangers.

|nsta||er's Guide

LIQUID LINE SERVICE VALVE

CAP'_ (_

UNIT SIDE OF f

SERVICE VALVE "_._.._ _

PORT

LIQUID LINE CONNECTION

ROLLED EDGE TO

CAPTIVATE STEM

b. Isolation hangers should also be used when refrigerant

lines are run in stud spaces or enclosed ceilings.

c. Where the refrigerant lines run through a wall or sill,

they should be insulated and isolated.

d. Isolate the lines from all ductwork.

E. SERVICE VALVE OPERATION

BRASS LIQUID LiNE SERVICE VALVE

The Brass Liquid Line Service Valve is factory shipped in the seated position to hold factory charge. The pressure tap

service port (when depressed) opens only to the field brazing side of the valve when the valve is in the seated position.

The liquid line valve is not a back seating valve (see WARNING below).

Extreme caution should be exercised when opening the Liquid Line Service Valve. Turn valve stem counterclock- wise only until the stem contacts the rolled edge. (See Figure 4) No torque is required.

BRASS GAS LINE SERVICE VALVE

The Brass Gas Line Service Valve is shipped in the closed position to hold the fhctory refrigerant charge. The pressure tap service port (when depressed) opens only to the field

brazing side when the valve is in the closed position. The Gas

Line Service Valve is full open with a 1/4 turn. See Figure 5. BRAZING REFRIGERANT LINES

1. Remove lower access cover to access service valves.

2. Before brazing, remove plugs from external eopper stub tubes. Clean internal and external surfaces of stub

tubes prior to brazing.

3. Cut and fit tubing, minimizing the use of sharp 90 ° bends.

4. Insulate the entire gas line and its fittings.

5. Do NOT allow uninsulated liquid line to come in direct contact with bare gas line.

6. Precautions should be taken to avoid heat damage to the pressure tap valve core during brazing. It is

recommended that the pressure tap port valve core be removed and a wet rag wrapped around

the valve body.

NOTICE: Use care to make sure that no moisture enters pressure tap

port, while wet rag is being used.

7. Use a Dry Nitrogen Purge and Brazing Alloy without flux when brazing the field line to the copper factory connec-

tion. Flow dry nitrogen into either valve pressure tap port, thru the tubing and out the other port while brazing.

8. Braze using accepted good brazing techniques.

LEAK CHECK

IMPORTANT:

Replace pressure tap port valve core before attaching hoses for evacuation.

After the brazing operation of refrigerant lines to both the

outdoor and indoor unit is completed, the field brazed connections must be checked for leaks. Pressurize through the service valve ports, the indoor unit and field refrigerant lines with dry nitrogen to 350-400 psi. Use soap bubbles or other leak-checking methods to see that all field joints are leak-free! If not, release pressure; then repair!

SYSTEM EVACUATION

NOTE: Since the outdoor unit has a refrigerant charge, the gas and

liquid line valves must remain closed.

1. Upon completion of leak check, evacuate the refrigerant lines and indoor coil before opening the gas and liquid

line valves.

2. Attach appropriate hoses from manifold gauge to gas and liquid line pressure taps.

NOTE:

Unnecessary switching of hoses can be avoided and complete evacuation of all lines leading to sealed system can be accomplished with manifold center hose and connecting branch hose to a cylinder of R-410A and

vacuum pump.

Attach center hose of manifold gauges to vacuum pump.

Evacuate until the micron gauge reads no higher than 350 microns.

5. Close offvalve to vacuum pump and observe the micron gauge. If gauge pressure rises above 500 microns in one (1) minute., then evacuation is incomplete, or system has a leak.

6. If vacuum gauge does not rise above 500 microns in one (1) minute, the evacuation should be complete.

7. With vacuum pump and micron gauge blanked off; open

valve on R-410A cylinder and charge refrigerant lines and

indoor coil with vapor to tank pressure of R-410A supply.

GAS LINE SERVICE VALVE

FORFULLOPEN

OFVALVE

UNIT SIDE / _STEM

PRESSURETAPPORT

GAS LINE CONNECTION

NOTICE: Precautions should be taken to avoid heat damage to

basepan during brazing. It is recommended to keep the flame directly off of the baeepan.

18-AC50D1-3

|nsta||er's Guide

NOTE: DO NOT VENT REFRIGERANT INTO THE ATMOSPHERE.

8. Close valve on R-410A supply cylinder. Close valves on manifold gauge set and remove refrigerant charging hoses from liquid and gas pressure tap ports.

NOTE: A 3/16" Allen wrench is required to open liquid line service

valve. A I/4" Open End or Adjustable wrench is required to open gas line valve. A 3/4" Open End wrench is required to take off the valve stem cap.

9. The liquid line shut-offvalve can now be opened. Remove shut-off valve cap. Fully insert hex wrench into the stem and backout counte.rclockwise until valve stem just touches rolled edge (approximately five [5] turns) observing WARNING statement on page 3. See Figure 4.

10. Replace liquid service pressure tap port cap and valve

stem cap. These caps MUST BE REPLACED to prevent leaks. Replace valve stem cap and pressure tap cap finger tight, then tighten an additional 1/6 turn.

11. The gas valve can now be opened. Open the gas valve by removing the shut-off valve cap and turning the valve stein 1/4 turn counterclockwise, using 1/4" Open End or Adjustable wrench. See Figure 5.

12. The gas valve is now open for refrigerant flow. Replace valve stem cap to prevent leaks. Again, these caps MUST BE REPLACED to prevent leaks. Replace valve stem cap and pressure tap cap finger tight, then tighten an additional 1/6 turn. See Figure 5.

If refrigerant lines are longer than 15 feet and/or a difihrent size than recommended, it will be necessary to adjust system refrigerant charge upon completion of

installation. See unit Service Facts.

F. ELECTRICAL CONNECTIONS

When installing or servicing this equipment, ALWAYS exercise basic safety precautions to avoid the possibility

of electric shock.

1. Power -wiring and grounding of equipment must comply with local codes.

2. Power supply must agree with equipment nameplate.

3. Install a separate disconnect switch at the outdoor unit.

4. Ground the outdoor unit per local code requirements.

5. Provide flexible electrical conduit whenever vibration transmission may create a noise problem within the

structure.

6. The use of color coded low voltage wire is recommended to simplify connections between the outdoor unit, the

thermostat and the indoor unit.

Table 1 -- NEC Class II Control Wiring

24 VOLTS

7. Table i defines maximum total length of low voltage wiring from outdoor unit, to indoor unit, and to thermostat.

8. Mount the indoor thermostat in accordance with instruc- tion included with the thermostat. Wire per appropriate

hook-up diagram (included in these instructions).

G. COMPRESSOR START UP

After all electrical wiring is complete, SET THE THERMO- STAT SYSTEM SWITCH IN THE OFF POSITION SO

COMPRESSOR WILL NOT RUN, and apply power by closing the system main disconnect switch. This will activate the compressor sump heat (where used). Do not change the Thermostat System Switch until power has been applied for one (1) hour. Following this procedure -will prevent potential compressor overload trip at the initial start-up.

H. OPERATIONAL AND

CHECKOUT PROCEDURES

Final phases of this installation are the unit Operational and Checkout Procedures which are found in this instruction (see

page 8). To obtain proper performance, all units must be operated and charge adjustments made in accordance with procedures found in the Service Facts.

I. ELECTRIC HEATERS

Electric heaters, if used, are to be installed in the air han- dling device according to the instructions accompanying the

air handler and the heaters.

J. START CONTROL

Some models have quick start components which are factory installed. For models that do not have factory installed start components, provisions are made for a field installed start kit accessory. When adding an accessory, follow the instructions provided with the kit.

K. OUTDOOR THERMOSTAT

An outdoor thermostat TAYSTAT250A may be field installed. For data, see wiring diagram attached to unit and instruction sheet packaged with outdoor thermostat.

L. XL SEACOAST SHIELD

All units are shipped with a black Seacoast Shield attached to the access panel. Removal of the shield will potentially shorten the life of the joints in the outdoor coil.

M. TROUBLESHOOTING

TROUBLESHOOTING CHART -- WHAT TO CHECK

SYSTEMFAULTS

WIRE SIZE MAX. WIRE LENGTH

18 AWG 150 FT

Compressor&OD FanDoNotStart CompressorWIllNotStartButODFanRuns

16 AWG 225 FT. 14 AWG 300 FT.

P- PrimaryCauses S-SecondaryCauses

4 18-AC50 D1-3

TYPICAL FIELD HOOK=UP DIAGRAMS

|nsta|ler's Guide

1 ' S1AF

T'STAT

A R tIANDL R

_- ..... R

_ .... G

_[--B

PRINTED FROM B152g01 P02

I-STAGE

OR 2-STAGE FURNACE

A CONDITIONER

...... y

ODT

t:)......B

AIR CONDITIONER

T'STAT AIR HANDLER AIR CONDIr}ONER

VARIABLE SPEED

"_,'i'... y

ODT A

•.r_i_ _--

I OP leNA R_40T

N '

PRINTED FROM B152908 P02

CONNECTIONS TO BE MADE FOR OPERATION OF BLOWER WITH

NUMIDISTAT IN COOLING

I 'S J',

V;R _ i : SP '_D

2 S AGE :UF!['£,C Ai_] (()N} i ION R

NOTE

PRINTEDFROMB152903P02

"kW2presentonlyon2stage

thermostatandfurnace

Notes:

1. Be sure power supply agrees with equipment nameplate.

2. Power wiring and grounding of equipment must comply with local codes.

3. Low voltage wiring to be No. 18 AWG minimum conductor.

4. ODT-B must be set lower than ODT-A.

5. If outdoor thermostats (ODT) are not used, connect W1 to W2 and W3.

..... y

i _oi '

i NOTE,k l

PRINTED FROM B152907 P03

_rW2 present only on 2 stage

thermostat and furnace

LEGEND

..... FACTORY WIRING

_ FIELD WIRING

_,"....

18-AC5OD1-3 5

|nsta||er's Guide

S[RViCL PANEi ................

EIDCIFiiCAi AND REIRiOERANI

COMPONEN[CiBARANCES

PER PRDVAiilNG CODES

4TTX3; 4TTX4 OUTLINE DRAWING

Note: All dimensions are in MM (Inches).

}NI J SOULO B PLAf;ED SO ROD

i) REC [v O1'4 JNI , AND SHO D BE

AI AS 305 {2' FRO_,_ _,Ail #ND AI

SURROUN}I_6 S RUBBERY OK T_,O S DES

OHER [WO $ D_S U RES RICED

RU DEE _,A ER DOS NOI POUR

MODELS BASE

4TTX3018A 3 4TTX3024A 3 4TTX303OA 3 4TTX3036A 3

4TTX3042A 3 4TTX3048A 3 4TTX3060A 4 4TTX4018B 3 4TTX4024B 3

4TTX4030B 3 4TTX4038B 3 4TTX4042B 4 4TTX4048B 4 4TTX4080C 4

LIQUID LINE SERVICE

VAiV r, "E" ID FEMALE

BRAZE CONB_CTiON

WiTii i/4" SA_ FLARE _\

P_{SSURE rAP FITiiNOS

A 1016 (40) 829 1016 (40) 829 1016 (40) 829 1016 (40) 829 1118 (44) 829

1219 (48) 829

1064 (41-7/8) 946

1016 (40) 829 1016 (40) 829 1016 (40) 829

1118 (44) 829

1165 (48-7/8) 946 1267 (49-7/8) 946 1267 (49-7/8) 946

B (32-5/8) (32-5/8) (32-5/8) (32-5/8) (32-5/8)

(32-5/8) (37-1/4) (32-5/8) (32-5/8) (32-5/8)

(32-5/8) (37-1/4) (37-1/4) (37-1/4)

GAS LINE i/4 FURN BALL SERVICE VALVE, "D" iD FEMALE BRAZED CONNECTION

WiiR I/4 ¸`SAE ELATE P_ESS_RE

rAP EliiiN6

C D E F 758 (29-3/4) 1/2 1/4 143 (5-5/8) 758 (29-3/4) 5/8 5/18 143 (5-5/8) 758 (29-3/4) 3/4 5/18 143 (5-5/8) 758 (29-3/4) 3/4 3/8 143 (5-5/8) 758 (29-3/4) 3/4 3/8 143 (5-5/8)

758 (29-3/4) 7/8 3/8 143 (5-5/8) 870 (34-1/4) 7/8 3/8 152 (8) 758 (29-3/4) 1/2 1/4 143 (5-5/8) 758 (29-3/4) 5/8 5/18 143 (5-5/8) 758 (29-3/4) 3/4 5/18 143 (5-5/8)

758 (29-3/4) 3/4 3/8 143 (5-5/8) 870 (34-1/4) 3/4 3/8 152 (8) 870 (34-1/4) 7/8 3/8 152 (8) 870 (34-1/4) 7/8 3/8 152 (8)

G 92 (3-5/8) 92 (3-8/8) 92 (3-8/8) 92 (3-8/8) 92 (3-8/8)

92 (3-8/8) 98 (3-7/8) 92 (3-8/8) 92 (3-8/8) 92 (3-8/8)

92 (3-8/8) 98 (3-7/8) 98 (3-7/8) 98 (3-7/8)

H 210 (8-1/4) 210 (8-1/4) 210 (8-1/4) 210 (8-1/4) 210 (8-1/4)

210 (8-1/4) 219 (8-8/8) 210 (8-1/4) 210 (8-1/4) 210 (8-1/4)

210 (8-1/4) 219 (8-8/8) 219 (8-8/8) 219 (8-8/8)

J 79 (3-1/8) 79 (3-1/8) 79 (3-1/8) 79 (3-1/8) 79 (3-1/8)

79 (3-1/8) 86 (3-3/8) 79 (3-1/8) 79 (3-1/8) 79 (3-1/8)

79 (3-1/8) 86 (3-3/8) 86 (3-3/8) 86 (3-3/8)

K 692 (27-1/4) 692 (27-1/4) 692 (27-1/4) 692 (27-1/4) 692 (27-1/4)

692 (27-1/4)

730 (28--3/4)

692 (27-1/4) 692 (27-1/4) 692 (27-1/4)

692 (27-1/4) 730 (28-3/4) 730 (28-3/4) 730 (28-3/4)

From Dwg. 21D152635 Rev. 3

6 18-AC5 0D1-3

319)

|nsta||er's Guide

MOUNTING HOLE LOCATION

Note: All dimensions are in IVllVl(Inches).

i7i (6 i/,)

72_ (869

...........................................482 (1899} ......................................

!39'9 (2}%)

BASE 3

;'1;' (28 24)

NOTE: For model base size,

5'99 (73 58)

see table on page 6.

' 2 (26 64 )

BASE 4

18-AC50D1-3 7

|nstaller's Guide

CHECKOUTPROCEDURE

After installation has been completed, it is recommended that the entire system be checked against the following list:

1. Refrigerant Line, Leak checked .................................. [

2. Suction Lines and Fittings properly insulated ........... [

3. Have all Refrigerant Lines been secured and

isolated properly? ........................................................ [

4. Have passages through masonry been sealed? If mortar is used, prevent mortar from coining

into direct contact with copper tubing ........................ [

5. Verify tightness of all electrical connects ................... [

6. Observe outdoor fan during on cycle for clearance

and smooth operation .................................................. [

7. Indoor coil drain line drains freely. Pour water

into drain pan .............................................................. [

]

8. Supply registers and return grilles open and

]

] ]

unobstructed ................................................................ [ ]

9. Return air filter installed ............................................ [ ]

10. Thermostat thermometer is accurate. Check against a reliable thermometer. Adjust per

instructions with thermostat ...................................... [ ]

11. Is correct speed tap being used?

(Indoor blower motor) .................................................. [ ]

12. Operate complete system in each mode to

insure safe operation ................................................... [ ]

CHECKOUT PROCEDURE WITH MAiN P(

iNDOORTHERMOSTAT

SWITCHSETTING

Step

No.

1 SumpHeat

2 IndoorFan Operation 3 CoolingOperation

4 CheckingPerformance

5 Heating@

@ Also set thermostat dial to call for cooling or heating as necessary. @ Check only necessary if heating unit is used for indoor section and wiring has been disturbed during installation of cooling equipment, @ When applicable.

TOCHECK

&Charge

Informowneronhowto operatesystemandwhattoexpectofit. At thesametimedeliverOwner'sUseand CareBooklet.

@ @ FanSwitch

Off

Cool Heat Auto On

X X

x x x x x

x ix I x I x x

I Ixlx! Ix ! I

)WER DISCONNECTS CLOSED (ON)

COMPONENTOPERATION

indoor Outdoor

Blower Fan

Runs Runs

x x

USECHARTSATTACHEDTOO.D. UNIT

Compressor @ Comp. Furnace

Runs Sump Heat

Heater Comes On

X X X

1r'JMNE

Trane A business of

American Standard Companies www.trane.com

,0°0°,

210/248UAC

Trane has a policy of continuous product and product data improvement and it reserves the right to change design and specifications without notice.

P.I. 10/06

Trane 4TTX3, 4TTX4 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual