Trane AC 36, AC 18, AC 30, AC 42, AC 48 Installation Instructions Manual
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INSTALLATION INSTRUCTIONS
14 SEER
14 SEER
Split System Air Conditioner & Heat Pump
1.5-5 Tons
R410A
NOTE: Appearance of unit may vary.
RECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY INFORMATION
WARNING
These instructions are intended as an aid to qualified
licensed service personnel for proper installation, adjustment and operation of this unit. Read these instructions
thoroughly before attempting installation or operation.
Failure to follow these instructions may result in improper
installation, adjustment, service or maintenance possibly
resulting in fire, electrical shock, property damage,
personal injury or death.
DO NOT DESTROY THIS MANUAL
Please read carefully and keep in a safe place for future reference by a serviceman.
TABLE OF CONTENTS
1. KEY TO SYMBOLS AND SAFETY INSTRUCTIONS............................................1
2. UNIT LOCATION CONSIDERATIONS.................................................................2
3. UNIT PREPARATION..........................................................................................3
4. SETTING UP THE UNIT.......................................................................................3
5. REFRIGERANT LINE CONSIDERATIONS.........................................................4
6. REFRIGERANT LINE ROUTING........................................................................5
7. REFRIGERANT LINE BRAZING..........................................................................7
8. REFRIGERANT LINE LEAK CHECK...................................................................8
9. EVACUATION......................................................................................................8
10. SERVICE VALVE...............................................................................................8
11. ELECTRICAL - LOW VOLTAGE.........................................................................9
12. ELECTRICAL - HIGH VOLTAGE......................................................................10
13. START UP........................................................................................................10
14. SYSTEM CHARGE ADJUSTMENT..................................................................11
15. SYSTEM OPERATION AND TROUBLESHOOTING.......................................16
16. WARRANTY.....................................................................................................19
17. WIRING DIAGRAMS.......................................................................................20
18 . MATCHING TABLE AND CHECKOUT PROCEDURES.................................22
All phases of this installation must comply with NATIONAL, STATE, AND
LOCAL CODES.
1. Key to symbols and safety instructions
1.1 Key to symbols
WARNING: HAZARDOUS VOLTAGE
Failure to follow this warning could result in property damage,
severe personal injury or death.
Disconnect all electric power, including remote disconnects
before servicing. Follow proper lockout/tagout procedures to
ensure the power cannot be inadvertently energized.
Warnings in this document are identified by a warning
triangle. Keywords at the start of a warning indicate the
type and seriousness of the ensuing risk if measures to
prevent the risk are not taken.
This symbol indicates important information where there
is no risk to people or property.
The following keywords are defined and can be used in this document:
DANGER indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION indicates a hazardous situation which, if not avoided, could
result in minor to moderate injury.
NOTICE is used to address practices not related to personal injury.
1.2 Safety
CAUTION:
This document is customer property and is to remain with
this unit. Please return to service information pack upon
completion of work.
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.
WARNING: REFRIGERANT OIL
These units use R-410A refrigerant which operates at 50% to 70%
higher pressures than
equipments. 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 system. 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 opening 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.
R-22. Use only R-410A approved service
CAUTION: HOT SURFACE
May cause minor to severe burning. Failure to follow this Caution
could result in property damage or personal injury. Do not touch
the top of compressor.
CAUTION: CONTAINS REFRIGERANT
Failure to follow proper procedures can result in personal illness
or injury or severe equipment damage. System contains oil and
refrigerant under high pressure. Recover refrigerant to relieve
pressure before opening system.
CAUTION: GROUNDING REQUIRED
Failure to inspect or use proper service tools may result in
equipment damage or personal injury. Reconnect all grounding
devices. All parts of this product that are capable of conducting
electrical current are grounded. If grounding wires, screws,
straps, clips, nuts or washers used to complete a path to ground
are removed for service, they must be returned to their original
position and properly fastened.
This document contains a wiring diagram and service information.
CAUTION:
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.
WARNING: 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
Liquid Line Service Valve. Turn valve stem counterclockwise only
until the stem contacts the rolled edge. No torque is required.
WARNING: BRAZING REQUIRED
Failure to inspect lines or use proper service tools may result in
equipment damage or personal injury.
All outdoor unit and evaporator coil connections are
copper-to-copper and should be brazed with a
phosphorous-copper alloy material such as Silfos-5 or
equivalent. Do not use soft solder.
1
WARNING: HIGH CURRENT LEAKAGE
Unit Dimensions
Failure to follow this warning could result in property damage,
severe personal injury or death. Grounding is essential before
connecting electrical supply.
Position unit where water, snow or ice from roof or overhang cannot fall
directly on unit.
Position the outdoor unit a minimum of 12’’ from any wall or surrounding
shrubbery to ensure adequate airflow.
See Figure 2 and Figure 3.
2. Unit location considerations
2.1 Unit dimensions
Model
AC HP
18 24-15/16 21-7/8 21-7/8
/
24 18/24 24-15/16 23-5/8 23-5/8
30 30 24-15/16 28 28
36 36 24-15/16 29-1/8 29-1/8
4242 33-3/16 28 28
48 48 33-3/16 28 28
60 60 33-3/16 29-1/8 29-1/8
Table 1
The unit’s weight value is on the cardboard box.
When mounting the outdoor unit on a roof, be sure the roof will support
the unit’s weight. Properly selected isolation is recommended to prevent
sound or vibration transmission to the building structure.
H(Inches) W(Inches) L(Inches)
Cold climate considerations (heat pump only)
Precautions must 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 drainage of defrost water (Figure 4).
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.
Avoid Install
Near Bedrooms
Min. 60” Unrestricted
Figure 1
2.2 Location restrictions
Ensure the top discharge area is unrestricted for at least 60 inches above
the unit.
Do not locate outdoor unit near bedrooms since normal operational
sounds may be objectionable.
Position unit to allow adequate space for unobstructed airflow, wiring,
refrigerant lines, and serviceability.
Maintain a distance of 24 inches between units.
Min. 12’’ to
Shrubbery
Figure 2
Min. 12” to
Shrubbery
Min. 24’’
Unrestricted
Access Panel
Min. 12” to
Wall
24 inches clearance must be provided in front of the control box (access
panels) and any other side requiring service.
2
Figure 3
The pad must be high enough above grade to allow for drainage.
Min. 12"
Snow
barrier
Snow legs
3- 12" Elevation
pad
Figure 4
3. Unit preparation
3.1 Pre-installation
STEP 1 - Check for damage and report promptly to the carrier any
damage found to the unit (Figure 5).
STEP 2 - Instruments must be designed to install/serve R410A
equipmens.
Gauge sets, hoses, refrigerant containers and recovery system
must be designed to handle the POE type oils.
Manifold sets should be 800 PSIG high side and 250 PSIG low
side.
The pad location must comply with National, State and Local codes.
These instructions are intended to provide a method to tie-down
system to concrete slab as a securing procedure for high wind
areas. Check Local Codes for tie-down methods and protocols.
All hoses must have a 700 PSIG service pressure rating.
Leak detectors should be disigned to detect R410A.
Recovery equipments (including refrigerant recovery containers
) must be specifically designed to handle R410A.
Do not use an R22 TXV.
Figure
5
4. Setting up the unit
Figure
6
#7 X 3/8” Self Tapping Screws
(Don’t Exceed 3/8” long)
Detail A
The dimension
see Unit Dimensions.
See Detail A
Brackets:
2" width, 1/16" thickness,
height as required.
Available from distributor
or in market place.
4.1 Pad installation
When installing the unit on a support pad, such as a concrete slab,
consider the following:
The pad must be at least 1-2” larger than the unit on all sides.
The pad must be separate from any structure.
The pad must be level.
1/4” Χ 1-1/2” Hex Washer Head Concrete Screws
(3/16” Pilot Hole Needed. Pilot Hole Should Be 1/4” Deeper
Than The Fastener Embedment)
Figure
7
3
5. Refrigerant line considerations
optional standard optional standard
Suction line
Liquid line
25 50 75 100 125 150
3/8 25 50 56 44 32 20
Total equivalent length(Feet)
Maximum vertical length(Feet)
25 50 100 150
1-1/8 1.00 0.99 0.98 0.97
Coefficient
Total suction line length(Feet)
5.1 Service valve connection sizes
Model
18 3/4 3/8
24 3/4 3/8
30 3/4 3/8
36 3/4 3/8
42 3/4 3/8
48 7/8 3/8
60 7/8 3/8
Table 2
Suction line
connection
Liquid line
connection
Model
18
24
30
36
42
48
60
Table 5 Suction line length/size VS capcaity multiplier
Using suction line larger than shown in chart will result in poor oil
return and is not recommended.
For example: the system capacity published in AHRI is 17800
Btu/h. This data is based on the AHRI test condition and 25 feet
line set with standard suction tube size (3/4" tube). If you need to
add the line set more than 25 feet or use the optional suction
tube size, you need to recalculate the capacity with the
coefficient in the table. For 50 feet line and 5/8" suction tube, the
capacity will be 17800*0.97=17266 Btu/h.
Suction line
(Inches)
5/8 1.00 0.97 0.94 0.90
3/4 1.00 0.98 0.95 0.92
5/8 1.00 0.97 0.94 0.90
3/4 1.00 0.98 0.95 0.92
5/8 1.00 0.97 0.94 0.90
3/4 1.00 0.98 0.96 0.93
5/8 1.00 0.97 0.94 0.90
3/4 1.00 0.99 0.97 0.96
5/8 1.00 0.98 0.95 0.91
3/4 1.00 0.98 0.97 0.96
3/4 1.00 0.98 0.95 0.92
7/8 1.00 0.98 0.97 0.96
7/8 0.99 0.98 0.94 0.90
Figure
8
5.2 Refrigerant line sizes
Model
18 5/8 3/4 5/16 3/8
24 5/8 3/4 5/16 3/8
30 5/8 3/4 5/16 3/8
36 5/8 3/4 5/16 3/8
42 5/8 3/4 5/16 3/8
48 3/4 7/8 1/2 3/8
60 7/8 1-1/8 1/2 3/8
Table 3
5.3 Refrigerant piping limits and required refrigerant
line length
18
24
30
36
42
48
60
Liquid line
(Inches)
5/16 25 50 60 58 40 30
3/8 25 50 60 60 40 30
5/16 25 36 29 23 16 9
3/8 25 50 60 60 40 30
5/16 25 49 38 27 17 6
3/8 25 50 60 60 40 30
5/16 25 50 37 22 7 N/A
3/8 25 50 60 60 40 30
5/16 25 23 4 N/A N/A N/A
3/8 25 50 43 36 30 24
1/2 25 50 56 55 40 30
3/8 25 46 38 30 22 15
1/2 25 50 60 60 40 30
Model
Determine required line length and lift. You will need this later in Section
14.
Total Line Length = __________ Feet.
Total vertical Change(Lift) = __________ Feet.
Line Length
Figure 9
5.4 Refrigerant line insulation
The suction line must always be insulated. DO NOT allow the
Liquid Line and Suction Line to come in direct (metal to metal)
contact.
Table 4
4
Figure 10
5.5 Reuse existing refrigerant lines
CAUTION:
If using existing refrigerant lines make certain that all joints are
brazed, not soldered.
For retrofit applications, where the existing refrigerant lines will be used,
the following precautions should be taken:
Ensure that the refrigerant lines are the correct size. Refer to
Section 5.1 listed and Table 3.
Ensure that the refrigerant lines are free of leaks, acid, and oil.
The manufacturer recommends installing only approved matched
indoor and outdoor systems. All of the manufacturer’s split
systems are AHRI certified. Some of the benefits of installing
approved matched indoor and outdoor split systems are maximum
efficiency, optimum performance and the best overall system
reliability.
Figure 11
6. Refrigerant line routing
6.1 Precautions
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.
Use PVC piping as a conduit for all underground installations as
shown in Figure 15. Buried lines should be keep as short as
possible.
The lines should not obstruct service access to the coil, air
handling system or filter.
Care must also be taken to isolate the refrigerant lines to
minimize noise transmission from the equipment to the
structure.
Comply with National, State, and Local Codes when isolating line
sets from joists, rafters, walls or other structural elements.
Figure 12
Side Vi ew
8 Feet Maximum
8 Feet Maximum
Secure Suction li n e from jois ts us ing isolators every 8 feet. Secure
Liquid Line directly to Suc tion line using tape, wire, or other
approp riate m ethod ever y 8 feet.
Isolation From Joist/Rafter
5
Joist/Raft er
Isolator
Line Set
8 Feet Maximum
Wall
Isolator
Figure 13
Wall
Side View
Sealant
Insulation
8 Feet Maximum
Secure Suc tion Line using isolators ever y 8 feet.
Secure Liqu id Line directly t o Suction Line using
tape, wir e, or other approp ri ate m ethod every 8 feet.
Isolation In Wall Spaces
Sucti o n Li ne
Line Set
Ductwork
Is
olator
Isolation Through Wall
Figure 14
Line Set
DO NOT han g line s ets from d uctwork
Figure 15
6
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