Trane 4TTB6018A Instrucciones de montaje
18-AC96D1-1
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. All of the manufacturer’s split
systems are A.H.R.I. rated only with TXV/EEV indoor 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.
4TTB6018–060
Installer’s Guide
Table of Contents
Section 1. Safety..................................................................................... 2
Section 2. Unit Location Considerations..............................................3
Section 3. Unit Preparation.................................................................... 5
Section 4. Setting the Unit ..................................................................... 5
Section 5. Refrigerant Line Considerations......................................... 6
Section 6. Refrigerant Line Routing ..................................................... 7
Section 7. Refrigerant Line Brazing...................................................... 8
Section 8. Refrigerant Line Leak Check ............................................. 10
Section 9. Evacuation........................................................................... 11
Section 10. Service Valves................................................................... 11
Section 11. Electrical - Low Voltage.................................................... 13
Section 12. Electrical - High Voltage ................................................... 16
Section 13. Start Up.............................................................................. 17
Section 14. System Charge Adjustment............................................. 18
Section 15. Checkout Procedures and Troubleshooting................... 22
2 18-AC96D1-1
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.
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 cyl-
inders 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 “hygro-
scopic” action, the system should remain sealed
whenever possible. If a system has been open to the
atmosphere for more than 4 hours, the compressor oil
must be replaced. Never break a vacuum with air and
always change the driers when opening the system
for component replacement. For specific handling
concerns with R-410A and POE oil reference Retrofit
Bulletins SS-APG006-EN and APP-APG011-EN.
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-410A REFRIGERANT!
R-410A operating pressures exceed 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 AP-
PROVED POE COMPRESSOR OIL.
▲
WARNING
!
▲
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
!
If using existing refrigerant lines make certain that all
joints are brazed, not soldered.
▲CAUTION
!
Scroll compressor dome temperatures may be hot. Do
not touch the top of compressor; it may cause minor to
severe burning.
▲CAUTION
!
▲
WARNING
!
18-AC96D1-1 3
D
H
W
60’
Max
Vertical
Change
Standard
Line Set
60’ Max
Line Length
60’
Max
Vertical
Change
Unit Dimensions and Weight
Models H x D x W (in)
Weight* (lb)
4TTB6018A
29 x 30 x 33 173
4TTB6024A
29 x 30 x 33 174
4TTB6030A
33 x 34 x 37 201
4TTB6036A
37 x 34 x 37 193
4TTB6042A
41 x 34 x 37 235
4TTB6048A
45 x 34 x 37 245
4TTB6049A
45 x 34 x 37 267
4TTB6060A
45 x 34 x 37 248
* Weight values are estimated.
Table 2.1
Section 2. Unit Location Considerations
2.1 Unit Dimensions and Weight
2.2 Refrigerant Piping Limits
1. The maximum length of refrigerant lines
from outdoor to indoor unit should NOT
exceed sixty (60) feet.
2. The maximum vertical change should not
exceed sixty (60) feet.
3. Service valve connection diameters are
shown in Table 5.1.
Note: For line lengths greater than sixty (60)
feet, Refer to Refrigerant Piping Application
Guide, SS-APG006-EN or Refrigerant Piping
Software Program, 32-3312-03 (or latest revi-
sion).
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-AC96D1-1
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
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.
2.4 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. Please
refer to Seacoast Application Guide.
18-AC96D1-1 5
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.
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.
For other applications refer to Application Guide.
6 18-AC96D1-1
Line Length
Line Sizes Service Valve Connection Sizes
Model Vapor
Line Liquid
Line Vapor Line
Connection Liquid Line
Connection
4TTB6018A 5/8 3/8 5/8 3/8
4TTB6024A 3/4 3/8 3/4 3/8
4TTB6030A 3/4 3/8 3/4 3/8
4TTB6036A 3/4 3/8 3/4 3/8
4TTB6042A 7/8 3/8 7/8 3/8
4TTB6048A 7/8 3/8 7/8 3/8
4TTB6049A 7/8 3/8 7/8 3/8
4TTB6060A 7/8 3/8 7/8 3/8
Section 5. Refrigerant Line Considerations
5.1 Refrigerant Line and Service Valve Connection Sizes
Table 5.1
5.3 Required Refrigerant Line Length
5.2 Factory Charge
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
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.
Outdoor condensing units are factory charged with the system charge required for the outdoor condensing unit,
fifteen (15) feet of tested connecting line, and the smallest indoor evaporative coil match. If connecting line
length exceeds fifteen (15) feet and/or a larger indoor evaporative coil is installed, then final refrigerant
charge adjustment is necessary.
18-AC96D1-1 7
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.
Important: For more information see publi-
cation numbers SS-APG006-EN and APP-
APG011-EN.
▲CAUTION
!
If using existing refrigerant lines make certain that
all joints are brazed, not soldered.
Section 6. Refrigerant Line Routing
6.1 Precautions
Important: Take precautions to prevent noise
within the building structure due to vibration
transmission from the refrigerant lines.
For Example:
• When the refrigerant lines have to 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 ductwork.
• Minimize the number of 90º turns.
Comply with National, State, and Local Codes when
isolating line sets from joists, rafters, walls, or other
structural elements.
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
8 18-AC96D1-1
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.
18-AC96D1-1 9
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.
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.
Continue the dry nitrogen purge. Do not re-
move 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 basepan during brazing. It is
recommended to keep the flame directly off of
the basepane.
10 18-AC96D1-1
STEP 5 - Replace the pressure tap valve cores
after the service valves have cooled.
STEP 2 - Check for leaks by using a soapy solu-
tion or bubbles at each brazed location.
Remove nitrogren 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
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