Trane 5TTR4018A User manual

18-AC128D1-1B-EN

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 informa-

tion pack upon completion of work.

Condensing Units

These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with

the installation. 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.

Note: The manufacturer recommends installing only approved matched indoor and outdoor systems. Some of the benefits of

installing approved matched indoor and outdoor split systems are maximum efficiency, optimum performance and the best overall

system reliability.

5TTR4018 – 060

Installation and Operation Manual

Table of Contents

Section 1. Safety ..................................................................................... 2

Section 2. Unit Location Considerations.............................................. 3

Section 3. Unit Preparation.................................................................... 4

Section 4. Setting the Unit ..................................................................... 4

Section 5. Refrigerant Line Considerations......................................... 4

Section 6. Refrigerant Line Routing ..................................................... 5

Section 7. Refrigerant Line Brazing...................................................... 7

Section 8. Refrigerant Line Leak Check ............................................... 8

Section 9. Evacuation............................................................................. 8

Section 10. Service Valves..................................................................... 8

Section 11. Electrical - Low Voltage ..................................................... 9

Section 12. Electrical - High Voltage .................................................. 11

Section 13. Start Up.............................................................................. 11

Section 14. System Charge Adjustment............................................. 12

Section 15. Checkout Procedures....................................................... 16

Section 16. Refrigeration Circuits........................................................18

Section 17. Wiring Diagrams................................................................20

Section 18. Pressure Curves................................................................23

Note: R-454B refrigerant is an “A2L” refrigerant meaning: A = non-toxic, 2 = flammable, L = low burning velocity.

The term “A2L” is used throughout this document.

2 18-AC128D1-1B-EN

Section 1. Safety

WARNING

This information is intended for use by individuals

possessing adequate backgrounds of electrical and

mechanical experience. Any attempt to repair a central

air conditioning product may result in personal injury

and/or property damage. The manufacture or seller

cannot be responsible for the interpretation of this

information, nor can it assume any liability in connec-

tion with its use.

Extreme caution should be exercised when opening

the Liquid Line Service Valve. Turn counterclockwise

until the valve stem just touches the rolled edge. No

torque is required. Failure to follow this warning will

result in abrupt release of system charge and may

result in personal injury and /or property damage.

UNIT CONTAINS R-454B REFRIGERANT!

Proper service equipment is required. Failure to use

proper service tools may result in equipment damage

or personal injury.

SERVICE

USE ONLY R-454B REFRIGERANT AND

APPROVED COMPRESSOR OIL.

WARNING

The appliance is not to be used by persons (including

children) with reduced physical, sensory or mental

capabilities, or lack of experience and knowledge, un-

less they have been given supervision or instruction.

WARNING

Children should be supervised to ensure that they do

not play with the appliance.

WARNING

If using existing refrigerant lines should be brazed not

soldered. Solder alloys with a melting temperature

less than 427°C are not acceptable.

CAUTION

Scroll compressor dome temperatures may be hot. Do

not touch the top of compressor; it may cause minor to

severe burning.

CAUTION

WARNING

WARNING!

This product can expose you to chemicals including lead,

which are known to the State of California to cause cancer

and birth defects or other reproductive harm. For more

information go to www.P65Warnings.ca.gov

WARNING

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 equip-

ment, observe all precautions in the literature and on

the tags, stickers, and labels that are attached to the

equipment.

WARNING

RISK OF FIRE!

Flammable refrigerant used. To be repaired only by

trained service personnel. Do not puncture refrigerant

tubing.

Dispose of properly in accordance with federal or local

regulations. Flammable refrigerant used.

Mode Model Operating Range

Cooling 1.5 – 5 Ton 55°F – 120°F

Table 1. Operating Range

Ensure that the area is in the open or that it is

adequately ventilated before breaking into the system

or conducting any hot work.

WARNING

The appliance shall be stored in a room without contin-

uously operating ignition sources (for examples: open

flames, an operating gas appliance or an operating

electric heater). Do no pierce or burn. Be aware that

refrigerants may not contain an odour.

WARNING

LIVE ELECTRICAL COMPONENTS!

During installation, testing, servicing, and troubleshoot-

ing of this product power should be disconnected. It

may be necessary to work with live electrical compo-

nents. Failure to follow all electrical safety precautions

when exposed to live electrical components could

result in death or serious injury.

18-AC128D1-1B-EN 3

Table 2.1

Unit Dimensions and Weight

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

5TTR4018A 37 x 30 x 33 184

5TTR4024A 33 x 30 x 33 156

5TTR4030A 37 x 30 x 33 184

5TTR4036A 33 x 30 x 33 156

5TTR4042A 37 x 34 x 37 212

5TTR4048A 45 x 34 x 37 252

5TTR4060A 45 x 34 x 37 252

* Weight values are estimated.

Section 2. Unit Location Considerations

2.1 Unit Dimensions and Weight

2.2 Refrigerant Piping Limits

1. The maximum TOTAL length of refrigerant lines from outdoor to indoor unit should NOT exceed 150 feet

(including lift).

2. The maximum vertical change should not exceed 50 feet.

3. Service valve connection diameters are shown in Table 5.1.

Note: For other line lengths, refer to Refrigerant Piping Application Guide, SS-APG006-EN or Refrigerant Piping

Software Program, 32-3312-03 (or latest revision).

When mounting the outdoor unit on a roof, be sure the

roof will support the unit’s weight.

Properly selected isolation is recommended to allevi-

ate sound or vibration transmission to the building

structure.

Standard

Line Set

150’ Max

TOTAL Line Length

50’

Max

Vertical

Change

50’

Max

Vertical

Change

Min. 12” to

Shrubbery

Avoid Install

Near Bedrooms

Min 5’ Unrestricted

Access Panel

Min 3’

Unrestricted

2.3 Suggested Locations for Best Reliability

Ensure the top discharge area is unrestricted for

at least five (5) feet above the unit.

Three (3) feet clearance must be provided 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.

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 from pouring directly on the unit.

Please reference Indoor Unit Installer’s Guide

for correct specifications on indoor unit install.

4 18-AC128D1-1B-EN

Section 3. Unit Preparation

3.1 Prepare The Unit For Installation

STEP 1 - Check for damage and report promptly to the carrier any damage found to the unit.

STEP 2 - To remove the unit from the pallet, remove tabs by cutting with a sharp tool.

Section 4. Setting the Unit

4.1 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.

2.4 Coastal Considerations

If installed within one mile of salt water, including seacoasts and inland waterways, models without factory sup-

plied Seacoast Salt Shields require the addition of BAYSEAC001 (Seacoast Kit) at installation time.

Rated Line Sizes Alternate Line Sizes Service Valve Connection Sizes

Model Vapor Line Liquid Line Liquid Line Vapor Line

Connection Liquid Line

Connection

5TTR4018A 3/4 5/16 3/8 3/4 5/16

5TTR4024A 3/4 5/16 3/8 3/4 5/16

5TTR4030A 3/4 5/16 3/8 3/4 5/16

5TTR4036A 3/4 5/16 3/8 3/4 5/16

5TTR4042A 3/4 5/16 3/8 3/4 5/16

5TTR4048A 7/8 5/16 3/8 7/8 5/16

5TTR4060A 1-1/8 5/16 3/8 7/8 5/16

Section 5. Refrigerant Line Considerations

5.1 Refrigerant Line and Service Valve Connection Sizes

Table 5.1

Line Length

5.3 Required Refrigerant Line Length

5.2 Factory Charge

Determine required line length and lift. You will

need this later in STEP 2 of Section 14.

Total Line Length = __________ Ft.

Total Vertical Change (lift) = __________ Ft.

The outdoor condensing units are factory charged with the system charge required for the outdoor condensing

unit, ten (10) feet of tested connecting line, and the smallest rated indoor evaporative coil match. Always verify

proper system charge via subcooling (TXV/EEV) or superheat (fixed orifice) per the unit nameplate.

18-AC128D1-1B-EN 5

5.5 Reuse Existing Refrigerant Lines

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.

CAUTION

REFRIGERANT!

Failure to inspect or use proper service tools may

result in equipment damage or personal injury.

If using existing refrigerant lines make certain that

all joints are brazed, not soldered.

5.4 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.

Vapor Line

Liquid Line

Insulation

Section 6. Refrigerant Line Routing

6.1 Precautions

Important: Comply with National, State, and Local Codes when isolating line sets from joists, rafters, walls, or

other structural elements.

Important: For buried linesets, see publication number SS-APG006-EN.

Important: Take precautions to prevent noise within the building structure due to vibration transmission from the

refrigerant lines.

Important: Take care that piping material, pipe routing, and installation shall include protection from physical

damage in operation and service, and be in compliance with national and local codes and standards, such as

ASHRAE 15, ASHRAE 15.2, IAPMO Uniform Mechanical Code, ICC International Mechanical Code, or CSA B52.

All field joints shall be accessible for inspection prior to being covered or enclosed.

Important: Take care to account for expansion and contraction of long runs of piping.

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, isolated and servicable.

• Isolate the lines from all duct work.

• Minimize the number of 90° turns.

6 18-AC128D1-1B-EN

Isolation From Joist/Rafter

Side View

8 Feet Maximum

Secure Vapor line from joists using isolators every 8 ft. Secure

Liquid Line directly to Vapor line using tape, wire, or other appro-

priate method every 8 ft.

Joist/Rafter

Isolator

Line Set

8 Feet Maximum

Isolation In Wall Spaces

Side View

Wall

Isolator

Line Set

8 Feet Maximum

Secure Vapor Line using isolators every 8 ft. Secure Liquid Line

directly to Vapor Line using tape, wire, or other appropriate

method every 8 ft.

8 Feet Maximum

Isolation Through Wall

DO NOT hang line sets from ductwork

Sealant

Insulation

Vapor Line

Wall

Ductwork

Isolator

Line Set

18-AC128D1-1B-EN 7

Section 7. Refrigerant Line Brazing

7.1 Braze The Refrigerant Lines

STEP 1 - Remove caps or plugs. Use a deburing tool to debur the pipe ends. Clean both internal and external

surfaces of the tubing using an emery cloth.

STEP 2 - Remove the pressure tap cap and valve cores from both service valves.

STEP 3 - Purge the refrigerant lines and indoor coil with dry nitrogen.

Purge the refrigerant lines and indoor coil with dry nitrogen.

Note: A2L equipment shall have red marked service ports and pipes through which refrigerant is serviced.

STEP 4 - Wrap a wet rag around the valve body to avoid heat damage and continue the dry nitrogen purge.

Braze the refrigerant lines to the service valves.

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.

Note: Install drier in Liquid Line.

NOTE:

Precautions should be taken to avoid heat damage to basepan during brazing. It is recommended to

keep the flame directly off of the basep

an.

STEP 5 - Replace the pressure tap valve cores and plastic tabs after the service valves have cooled.

3-4” from valve

STEP 1 STEP 2 STEP 3

STEP 4 STEP 5

8 18-AC128D1-1B-EN

Section 8. Refrigerant Line Leak Check

8.1 Check For Leaks

After completion of field piping for split systems, the field pipework shall be pressure tested with nitrogen and then

vacuum tested prior to refrigerant charging, according to the following requirements:

1. The minimum leak test pressure of the lineset and indoor coil shall be the high side design pressure, unless the

high side of the system, cannot be isolated from the low side of the system in which case the entire system

shall be pressure tested to the low side design pressure.

2. The test pressure after removal of pressure source shall be maintained for at least 1 hour with no decrease of

pressure indicated by the test gauge, with test gauge resolution not exceeding 5% of the test pressure.

Important: Under no circumstances shall potential sources of ignition be used in the searching for or detection of

refrigerant leaks.

Important: The following leak detection methods are deemed acceptable for all refrigerant systems:

• Electronic leak detectors calibrated for R454B

• Bubble method

STEP 1 - Pressurize the refrigerant lines and evaporator coil to 150 PSIG using dry nitrogen.

STEP 2 - Check for leaks by using a soapy solution or bubbles at each brazed location.

Note: Remove nitrogen pressure and repair any leaks before continuing.

STEP 3 - Once the initial leak check is complete, complete a system pressure test. Pressurize the system to the

design pressure of the system for a minimum of 60 minutes. Do not add additional refrigerant or test gas after

reaching the design pressure. The system should show no loss of pressure once pressurized. Once the pressure

test is complete follow the steps for evacuation.

Section 9. Evacuation

9.1 Evacuate the Refrigerant Lines and Indoor Coil

Important: Do not open the service valves until the refrigerant lines and indoor coil leak check and evacuation

are complete.

STEP 1 - Evacuate until the micron gauge reads no higher than 350 microns, then close off the valve to the

vacuum pump.

STEP 2 - Observe the micron gauge. Evacuation is complete, if the micron gauge does not rise above

500 microns in one (1) minute and 1500 microns in ten (10) minutes.

Once evacuation is complete, blank off the vacuum pump and micron gauge, and close the valve on the manifold

gauge set.

Section 10. Service Valves

10.1 Open the Gas Service Valve

Important: Leak check and evacuation must be completed before opening the service valves.

NOTE: Do not vent refrigerant gases into the atmosphere.

STEP 1 - Remove valve stem cap.

STEP 2 - Using an adjustable wrench, turn valve stem 1/4 turn counterclockwise to the fully open position.

STEP 3 - Replace the valve stem cap to prevent leaks. Tighten finger tight plus an additional 1/6 turn.

18-AC128D1-1B-EN 9

10.2 Open the Liquid Service Valve

Important: Leak check and evacuation must be completed before opening the service valves.

STEP 1 - Remove service valve cap.

STEP 2 - 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.)

STEP 3 - Replace the valve cap to prevent leaks. Tighten finger tight plus an additional 1/6 turn.

SERVICE VALVES!

Failure to follow this warning will result in abrupt

release of system charge and may result in personal injury and/or property damage. Extreme caution should be

exercised when opening the Suction and Liquid Line Service Valve. Turn valve stem counterclockwise only until

the stem contacts the rolled edge. No torque is required.

WARNING

CAP

1/4 TURN ONLY

COUNTERCLOCKWISE

FOR FULL OPEN

POSITION

VALVE STEM

GAS LINE CONNECTION

UNIT SIDE

OF VALVE

PRESSURE TAP PORT

Gas Service Valve Liquid Service Valve

Cap

Rolled Edge to

Captivate Stem

Hex Headed

Valve System

Service Port

3/16” Hex Wrench

Unit Side

of Service

Valve

Section 11. Electrical - Low Voltage

11.1 Low Voltage Maximum Wire Length

Table 11.1 defines the maximum total length of

low voltage wiring from the outdoor unit, to the

indoor unit, and to the thermostat.

Table 11.1

24 VOLTS

WIRE SIZE MAX. WIRE LENGTH

18 AWG 150 Ft.

16 AWG 225 Ft.

14 AWG 300 Ft.

10 18-AC128D1-1B-EN

11.2 Low Voltage Hook-up Diagrams

With Furnace With Variable Speed Furnace

• Units with pigtails require wirenuts for

connections. Cap all unused wires.

•

In AC systems for multiple stages of heat,

jumper W1 and W2 together if comfort control

has only one stage of heat.

* If equipped with second stage heat

** When using a BK enabled comfort control,

cut BK jumper and bypass Y and YLo at the

furnace. Connect BK from comfort control to

BK of the furnace

Thermostat Furnace Furnace

Outdoor

Unit

B/C

24 VAC HOT

FAN

24 VAC

Common

COOL

HEATING

YY1 YY

Thermostat Outdoor

Unit

B/C

24 VAC HOT

FAN

24 VAC

Common

COOL

HEATING

BK **

With 5TEM4, 6 and C With 5TAM5 and X

• Units with pigtails require wirenuts for connections. Cap all

unused wires.

•

In AC systems for multiple stages of electric heat, jumper W1

and W2 together if comfort control has only one stage of heat.

•

TEM3/4 - Bypass air handler and connect Y from comfort

control directly to OD unit

* TEM6 Only

** TEM6 only - When using a BK enabled comfort control, cut BK

jumper and bypass Y1 and Y2 at the air handler. Connect BK

from comfort control to BK of the air handler

•

TAM4 only - Wire as shown, no BK is available

•

TAM7 only - When using a BK enabled comfort control, cut BK

jumper on the AFC and connect BK from comfort control to BK of

the air handler

Thermostat Air Handler Outdoor

Unit

B/C

Blue

24 VAC HOT

FAN

24 VAC

Common

SOV

COOL/HEAT

1st STAGE

HEATING

2nd STAGE

EMERGENCY

HEAT Pink

White

WH/BLK

Thermostat Air Handler Outdoor

Unit

B/C

Blue

24 VAC HOT

FAN

24 VAC

Common

SOV

COOL/HEAT

1st STAGE

HEATING

2nd STAGE

EMERGENCY

HEAT Pink

White

YOYO

WH/BLK

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