Trane 4TTR3018H Bedienungsanleitung
18-AC79D1-10D-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.
4TTR3
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 ..................................................... 8
Section 7. Refrigerant Line Brazing...................................................... 9
Section 8. Refrigerant Line Leak Check............................................. 11
Section 9. Evacuation .......................................................................... 12
Section 10. Service Valves .................................................................. 12
Section 11. Electrical - Low Voltage ................................................... 13
Section 12. Electrical - High Voltage .................................................. 15
Section 13. Start Up.............................................................................. 16
Section 14. System Charge Adjustment............................................. 17
Section 15. Checkout Procedures ...................................................... 23
Section 16. Refrigerant Circuits.......................................................... 24
Section 17. Wiring Diagrams............................................................... 26
Section 18. Pressure Curves............................................................... 34
Installation and Operation Manual
2 18-AC79D1-10D-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.
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 sys-
tem. 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. 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 or
APP-APG012-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
!
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
!
18-AC79D1-10D-EN 3
D
H
W
50’
Max
Vertical
Change
Standard
Line Set
150’ Max
TOTAL Line Length
50’
Max
Vertical
Change
Section 2. Unit Location Considerations
2.1 Unit Dimensions and Weight
2.2 Refrigerant Piping Limits
Table 2.1
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.
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. Standard and alternate line sizes and
service valve connection sizes are shown in
Table 5.1.
* See Table 5.1 for exceptions for certain
tonnages.
Note: For other line lengths, Refer to Refriger-
ant Piping Application Guide, SS-APG006-EN
or Refrigerant Piping Software Program, 32-
3312-xx (latest revision).
4TTR3018H 29 x 26 x 29 127
4TTR3024H 29 x 26 x 29 130
4TTR3030H 29 x 26 x 29 137
4TTR3036H 29 x 30 x 33 147
4TTR3042E 29 x 30 x 33 172
4TTR3043A 29 x 34 x 37 184
4TTR3048E 37 x 30 x 33 184
4TTR3049A 29 x 34 x 37 189
4TTR3060E 37 x 34 x 37 211
* Weight values are estimated.
Unit Dimensions and Weight
Models H x D x W (in)
Weight* (lb)
4TTR3018N 29 x 26 x 29 133
4TTR3024N 29 x 26 x 29 133
4TTR3030N 29 x 30 x 33 156
4TTR3036N 29 x 30 x 33 161
4TTR3042N 29 x 34 x 37 184
4TTR3048N 29 x 34 x 37 189
4TTR3060N 37 x 34 x 37 211
4 18-AC79D1-10D-EN
Min. 12” to
Shrubber
y
Avoid Install
Near Bedrooms
Min 5’ Unrestricted
Access Panel
Min 3’
Unrestricted
2.3 Suggested Locations for Best Reliability
Min. 12” to
Shrubber
y
Min. 12”
to Wall
2.4 Cold Climate Considerations
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.
It is not recommended to install in a location
where noise may distract the building occu-
pants. Some examples of these types of loca-
tions are sleeping quarters and by windows of
a living area. Please discuss location with the
building owner prior to installation.
NOTE: It is recommended that these precau-
tions be taken for units being installed in areas
where snow accumulation and prolonged below
freezing temperatures occur.
• Units should be elevated 3-12 inches above
the pad or rooftop, depending on local
weather. This additional height will allow
drainage of snow and ice melted during
defrost cycle prior to its refreezing. Ensure
that drain holes in unit base pan are not
obstructed preventing draining of defrost
water.
• If possible, avoid locations that are likely to
accumulate snow drifts. If not possible, a
snow drift barrier should be installed around
the unit to prevent a build-up of snow on the
sides of the unit.
Min. 12”
Snow
Barrier
3-12” Elevation
Snow Legs
Pad
Avoid locations such as near windows where
condensation and freezing defrost vapor can
annoy a customer.
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 or icicles from falling directly on the unit.
18-AC79D1-10D-EN 5
2.5 Coastal Considerations
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.
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.
6 18-AC79D1-10D-EN
Section 5. Refrigerant Line Considerations
5.1 Refrigerant Line and Service Valve Connection Sizes
Table 5.1
RATED
LINE SIZES
Line Sizes Service Valve Connection Sizes Max Line & Lift Lengths
Vapor
Line
Liquid
Line
Vapor Line
Connection
Liquid Line
Connection
TOTAL Max
Line Length (ft.) Max Lift (ft.)
4TTR3018N 3/4 3/8 3/4 3/8 150 50
4TTR3024N 3/4 3/8 3/4 3/8 150 50
4TTR3030N 3/4 3/8 3/4 3/8 150 50
4TTR3036N 3/4 3/8 3/4 3/8 150 50
4TTR3042N 7/8 3/8 7/8 3/8 150 50
4TTR3048N 7/8 3/8 7/8 3/8 150 50
4TTR3060N 7/8 3/8 7/8 3/8 150 50
Note: For other line lengths, Refer to Refrigerant Piping Application Guide, SS-APG006-EN or Refrigerant Piping
Software Program, 32-3312-xx (latest revision).
4TTR3018H 3/4 3/8 3/4 3/8 150 50
4TTR3024H 3/4 3/8 3/4 3/8 150 50
4TTR3030H 3/4 3/8 3/4 3/8 150 50
4TTR3036H 3/4 3/8 3/4 3/8 150 50
4TTR3042E 7/8 3/8 7/8 3/8 150 50
4TTR3043A 7/8 3/8 7/8 3/8 150 50
4TTR3048E 7/8 3/8 7/8 3/8 150 50
4TTR3049A 7/8 3/8 7/8 3/8 150 50
4TTR3060E 7/8 3/8 7/8 3/8 150 50
18-AC79D1-10D-EN 7
Line Length
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.
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.
8 18-AC79D1-10D-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
!
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
18-AC79D1-10D-EN 9
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.
10 18-AC79D1-10D-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.
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
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16
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