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
!
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
!
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
D
H
W
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:
NOTE:
Precautions should be taken to avoid heat damage to basepan during brazing. It is recommended to
Precautions should be taken to avoid heat damage to basepan during brazing. It is recommended to
keep the flame directly off of the basep
keep the flame directly off of the basep
an.
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
R
G
B
W1
W2
B
Y
R
G
B/C
W1
W2
24 VAC HOT
FAN
24 VAC
Common
COOL
HEATING
YY1 YY
Y
LO
Thermostat Outdoor
Unit
R
G
B
W1
W2
B
R
G
B/C
Y1
W1
W2
24 VAC HOT
FAN
24 VAC
Common
COOL
HEATING
O
BK
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
R
G
B
W1
W2
B
Y
R
G
B/C
Y
W1
W2
Blue
24 VAC HOT
FAN
24 VAC
Common
SOV
COOL/HEAT
1st STAGE
HEATING
2nd STAGE
EMERGENCY
HEAT Pink
White
O
Y1
Y2 *
BK
WH/BLK
BK
WH/BLK
Thermostat Air Handler Outdoor
Unit
R
G
B
W1
W2
B
R
G
B/C
Yl
W1
W2
Blue
24 VAC HOT
FAN
24 VAC
Common
SOV
COOL/HEAT
1st STAGE
HEATING
2nd STAGE
EMERGENCY
HEAT Pink
White
O
Yl
YOYO
BK
WH/BLK
BK
WH/BLK
**