Trane 5TTR3018-060 User manual

18-AC127D1-1A-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.
5TTR3018 – 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..................................................................... 5
Section 5. Refrigerant Line Considerations......................................... 5
Section 6. Refrigerant Line Routing ..................................................... 6
Section 7. Refrigerant Line Brazing...................................................... 7
Section 8. Refrigerant Line Leak Check............................................... 9
Section 9. Evacuation .......................................................................... 10
Section 10. Service Valves .................................................................. 10
Section 11. Electrical - Low Voltage ................................................... 11
Section 12. Electrical - High Voltage .................................................. 12
Section 13. Start Up.............................................................................. 13
Section 14. System Charge Adjustment............................................. 14
Section 15. Checkout Procedures ...................................................... 19
Section 16. Refrigeration Circuits........................................................20
Section 17. Wiring Diagrams................................................................22
Section 18. Pressure Curves................................................................26

2 18-AC127D1-1A-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
!
LIVE ELECTRICAL COMPONENTS!
During installation, testing, servicing, and trouble-
shooting of this product, it may be necessary to work
with live electrical components. Failure to follow all
electrical safety precautions when exposed to live
electrical components could result in death or serious
injury.
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
!

18-AC127D1-1A-EN 3
D
H
W
50’
Max
Vertical
Change
Standard
Line Set
150’ Max
TOTAL Line Length
50’
Max
Vertical
Change
Table 2.1
Unit Dimensions and Weight
Models H x D x W (in) Weight* (lb)
5TTR3018A 29 x 26 x 29 133
5TTR3024A 29 x 26 x 29 133
5TTR3030A 29 x 30 x 33 161
5TTR3036A 29 x 30 x 33 161
5TTR3042A 37 x 30 x 33 184
5TTR3048A 37 x 34 x 37 211
5TTR3060A 37 x 34 x 37 211
* 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 Refriger-
ant 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
alleviate sound or vibration transmission to the
building structure.

4 18-AC127D1-1A-EN
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.
Min. 12” to
Shrubbery
Min. 12”
to Wall
STEP 2 - To remove the unit from the pallet,
remove tabs by cutting with a sharp tool.
Section 3. Unit Preparation
3.1 Prepare The Unit For Installation
STEP 1 - Check for damage and report prompt-
ly to the carrier any damage found to the unit.
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.
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.

18-AC127D1-1A-EN 5
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.
Alternate Line Sizes Line Sizes Service Valve Connection Sizes
Model Liquid Line Vapor Line Liquid Line Vapor Line
Connection Liquid Line Connection
5TTR3018A 3/8 3/4 5/16 3/4 5/16
5TTR3024A 3/8 3/4 5/16 3/4 5/16
5TTR3030A 3/8 3/4 5/16 3/4 5/16
5TTR3036A 3/8 3/4 5/16 3/4 5/16
5TTR3042A 3/8 7/8 5/16 7/8 5/16
5TTR3048A 3/8 7/8 5/16 7/8 5/16
5TTR3060A 3/8 7/8 5/16 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.

6 18-AC127D1-1A-EN
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.
Section 6. Refrigerant Line Routing
6.1 Precautions
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
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 and isolated.
• Isolate the lines from all duct work.
• Minimize the number of 90° turns.

18-AC127D1-1A-EN 7
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
Section 7. Refrigerant Line Brazing
7.1 Braze The Refrigerant Lines
STEP 1 - Remove caps or plugs. Use a debur-
ing tool to debur the pipe ends. Clean both
internal and external surfaces of the tubing
using an emery cloth.

8 18-AC127D1-1A-EN
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 refriger-
ant is serviced.
STEP 4 - Wrap a wet rag around the valve body
to avoid heat damage and continue the dry nitro-
gen 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 evapo-
rator 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 avoidPrecautions should be taken to avoid
heat damage to basepan during brazing. It isheat damage to basepan during brazing. It is
recommended to keep the flame directly off ofrecommended to keep the flame directly off of
the basepan.the basepan.
3-4” from valve

18-AC127D1-1A-EN 9
STEP 5 - Replace the pressure tap valve cores
and plastic tabs after the service valves have
cooled.
STEP 2 - Check for leaks by using a soapy solu-
tion or bubbles at each brazed location.
Note: Remove nitrogen pressure and repair any
leaks before continuing.
Section 8. Refrigerant Line Leak Check
8.1 Check For Leaks
STEP 1 - Pressurize the refrigerant lines and
evaporator coil to 150 PSIG using dry nitrogen.
150 PSIG
After completion of field piping for split systems, the field pipework shall be pressure tested with an inert gas and
then vacuum tested prior to refrigerant charging, according to the following requirements:
1. The minimum test pressure for the low side of the system shall be the low side design pressure and the
minimum test pressure for the high side of the system 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 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.

10 18-AC127D1-1A-EN
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.
1 MIN.
Section 10. Service Valves
10.1 Open the Gas Service Valve
CAP
1/4 TURN ONLY
COUNTERCLOCKWIS
E
FOR FULL OPEN
POSITION
VALVE STEM
GAS LINE CONNECTION
UNIT SID
E
OF VALVE
PRESSURE TAP PORT
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.
10.1 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.
Cap
Rolled Edge to
Captivate Stem
Hex Headed
Valve System
Service Port
3/16” Hex Wrench
Unit Side
of Service
Valve
WARNING
!
SERVICE VALVES!
Failure to follow this warning will result in abrupt
release of system charge and may result in per-
sonal 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.
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.
0350
Microns
ON OFF