Goodman GSX16S421AA, GSX16S361AA, GSX16S301AA, GSX16S181AA, GSX16S241AA Installation Manual
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CONDENSING UNIT
AIR CONDITIONING
INSTALLATION & SERVICE REFERENCE
© 2005-2013, 2017-2018
Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500, Houston, TX 77056
www.goodmanmfg.com -or- www.amana-hac.com
P/N: IO-258T Date: January 2018
Important Safety Instructions
The following symbols and labels are used throughout this
manual to indicate immediate or potential safety hazards. It is
the owner’s and installer’s responsibility to read and comply
with all safety information and instructions accompanying these
symbols. Failure to heed safety information increases the risk
of personal injury, property damage, and/or product damage.
HIGH VOLTAGE!
Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage,
personal injury or death.
O
NLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL
ADJUST, SERVICE OR REPAIR (HEREINAFTER
EQUIPMENT SPECIFIED IN THIS MANUAL SHOULD SERVICE THE
EQUIPMENT
FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM
IMPROPER SERVICE OR SERVICE PROCEDURES
THIS UNIT, YOU ASSUME RESPONSIBILITY FOR ANY INJURY OR
PROPERTY DAMAGE WHICH MAY RESULT
JURISDICTIONS THAT REQUIRE ONE OR MORE LICENSES TO
SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL, ONLY
LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT
MPROPER INSTALLATION, ADJUSTMENT, SERVICING OR REPAIR
I
OF THE EQUIPMENT SPECIFIED IN THIS MANUAL, OR ATTEMPTING
TO INSTALL, ADJUST, SERVICE OR REPAIR THE EQUIPMENT
SPECIFIED IN THIS MANUAL WITHOUT PROPER TRAINING MAY
RESULT IN PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH
. THE
,
, “
SERVICE
MANUFACTURER WILL NOT BE RESPONSIBLE
. IF
. IN
ADDITION, IN
.
”)
THE
YOU SERVICE
.
Codes & Regulations
This product is designed and manufactured to comply with
national codes. Installation in accordance with such codes
and/or prevailing local codes/regulations is the responsibility
of the installer. The manufacturer assumes no responsibility
for equipment installed in violation of any codes or regulations. Rated performance is achieved after 72 hours of
operation.Rated performance is delivered at the specified airflow. See outdoor unit specification sheet for split system models or product specification sheet for packaged and light commercial models. Specification sheets can be found at
www.goodmanmfg.com for Goodman® brand products or
www.amana-hac.com for Amana® brand products. Within ei-
ther website, please select the residential or commercial products menu and then select the submenu for the type of product to be installed, such as air conditioners or heat pumps, to
access a list of product pages that each contain links to that
model’s specification sheet.
The United States Environmental Protection Agency (EPA)
has issued various regulations regarding the introduction and disposal of refrigerants. Failure to follow these
regulations may harm the environment and can lead to
the imposition of substantial fines. Should you have any
questions please contact the local office of the EPA.
If replacing a condensing unit or air handler, the system must
be manufacturer approved and Air Conditioning, Heating and
Refrigeration Institute (AHRI) matched. NOTE: Installation of
unmatched systems is strongly discouraged.
Outdoor units are approved for operation above 55°F in cooling mode. Operation below 55°F requires the use of an approved low ambient kit.
Shipping Inspection
Always keep the unit upright; laying the unit on its side or top
may cause equipment damage. Shipping damage, and subsequent investigation is the responsibility of the carrier. Verify
the model number, specifications, electrical characteristics,
and accessories are correct prior to installation. The distributor or manufacturer will not accept claims from dealers for transportation damage or installation of incorrectly shipped units.
is a registered trademark of Maytag Corporation or its related companies and is used
under license to Goodman Company, L.P., Houston, TX. All rights reserved.
Damage to the unit caused by operating the unit in a structure
that is not complete (either as part of new construction or
renovation) is not covered under the warranty.
Installation Clearances
Special consideration must be given to location of the condensing unit(s) in regard to structures, obstructions, other units,
and any/all other factors that may interfere with air circulation.
Where possible, the top of the unit should be completely unobstructed; however, if vertical conditions require placement beneath an obstruction there should be a minimum of 60
inches between the top of the unit and the obstruction(s).
The specified dimensions meet requirements for air circulation only. Consult all appropriate regulatory codes prior to
determining final clearances.
Another important consideration in selecting a location for the
unit(s) is the angle to obstructions. Either side adjacent the
valves can be placed toward the structure provided the side
away from the structure maintains minimum service clearance.
Corner installations are strongly discouraged.
NOT
RECOMMENDED
B B B
AA AAA
AA
C
AA
C
B
AA
OK!
OK!
OK!
OK!
OK!
OK!
Safe Refrigerant Handling
While these items will not cover every conceivable situation,
they should serve as a useful guide.
Refrigerants are heavier than air. They can "push out"
the oxygen in your lungs or in any enclosed space. To
avoid possible difficulty in breathing or death:
Never purge refrigerant into an enclosed room or
•
space. By law, all refrigerants must be reclaimed.
If an indoor leak is suspected, thoroughly ventilate the
•
area before beginning work.
• Liquid refrigerant can be very cold. To avoid possible
frostbite or blindness, avoid contact and wear gloves
and goggles. If liquid refrigerant does contact your
skin or eyes, seek medical help immediately.
• Always follow EP A regulations. Never burn refrigerant,
as poisonous gas will be produced.
A
Model Type A B C AA
Residential
Light Commercia l
AA
Minim um Airf low Clearance
10" 10" 18" 20"
12" 12" 18" 24"
AA
CC
This unit can be located at ground floor level or on flat roofs.
At ground floor level, the unit must be on a solid, level foundation that will not shift or settle. To reduce the possibility of
sound transmission, the foundation slab should not be in contact with or be an integral part of the building foundation. Ensure the foundation is sufficient to support the unit. A concrete slab raised above ground level provides a suitable base.
Rooftop Inst allations
If it is necessary to install this unit on a roof structure, ensure
the roof structure can support the weight and that proper consideration is given to the weather-tight integrity of the roof. Since
the unit can vibrate during operation, sound vibration transmission should be considered when installing the unit. Vibration
absorbing pads or springs can be installed between the condensing unit legs or frame and the roof mounting assembly to
reduce noise vibration.
T o avoid possible injury, explosion or death, practice
safe handling of refr ig erants.
To av oi d po s sible explosion:
Never apply flame or steam to a refrigerant cylinder.
•
If you must heat a cylinder for faster charging,
partially imm erse it in wa rm water.
Never fill a cylinder more than 80% full of liquid re-
•
frigerant.
• Never add anything other than R-22 to an R-22 cy linder or R-410A to an R-410A cylinder. The service
equipment used must be listed or certified for the
type of refrigerant used.
• Store cylinders in a cool, dry place. Never use a cy linder as a platform or a roller.
To avoid possible explosion, use only returnable (not
disposable) service cylinders when removing refrigerant from a system.
• Ensure the cylinder is free of damage which could
lead to a leak or explosion.
• Ensure the hydrostatic test date does not exceed
5 years.
• Ensure the pressure rating meets or exceeds 400
psig.
When in doubt, do not use cylinder.
Refrigerant Lines
CAUTION
The compressor POE oil for R-410A units is extremely
susceptible to moisture absorption and could cause
compressor failure. Do not leave system open to atmosphere any longer than necessary for installation.
Use only refrigerant grade (dehydrated and sealed) copper
tubing to connect the condensing unit with the indoor evaporator. After cutting the tubing, install plugs to keep refrigerant
tubing clean and dry prior to and during installation. Tubing
should always be cut square keeping ends round and free
from burrs. Clean the tubing to prevent contamination.
2
Do NOT let refrigerant lines come in direct contact with plumbing, ductwork, floor joists, wall studs, floors, and walls. When
running refrigerant lines through a foundation or wall, openings
should allow for sound and vibration absorbing material to be
placed or installed between tubing and foundation. Any gap
between foundation or wall and refrigerant lines should be filled
with a pliable silicon-based caulk, RTV or a vibration damping
material. Avoid suspending refrigerant tubing from joists and
studs with rigid wire or straps that would come in contact with
the tubing. Use an insulated or suspension type hanger. Keep
both lines separate and always insulate the suction line.
These sizes are recommended for line lengths of 79 feet or
less to obtain optimum performance. For alternate line sizing
options or runs of more than 79 feet, refer to Remote Cooling
Service Manual or TP-107 Long Line Set Application R-410A
or contact your distributor for assistance.
RECOMMENDED INTERCONNECTING TUBING (Ft)
Cond
Unit
Tons Suct Liq Suct Liq Suct Liq
0-24 25-49 50-79*
Line Di ameter (I n. OD )
1 1/2 5/8 1/4 3/4 3/8 3/4 3/8
2 5/81/43/43/83/43/8
2 1/2 5/8 1/4 3/4 3/8 7/8 3/8
3 3/4 3/8 7/8 3/8 1 1/8 3/8
3 1/2 7/8 3/8 1 1/8 3/8 1 1/8 3/8
4 7/ 8 3/8 1 1/8 3/8 1 1/8 3/8
5 7/ 8 3/8 1 1/8 3/8 1 1/8 3/8
* Lines greater than 79 feet in length or vertical elevation
changes more than 50 feet
Service Manual or contact your distributor for assistance.
refer to the Remote Cool ing
Insulation is necessary to prevent condensation from forming
and dropping from the suction line. Armflex (or satisfactory
equivalent) with 3/8” min. wall thickness is recommended. In
severe conditions (hot, high humidity areas) 1/2” insulation
may be required. Insulation must be installed in a manner
which protects tubing from damage and contamination.
Where possible, drain as much residual compressor oil from
existing systems, lines, and traps; pay close attention to low
areas where oil may collect. NOTE: If changing refrigerant
types, ensure the indoor coil and metering device is compatible with the type of refrigerant being used; otherwise, the indoor coil must be replaced.
Burying Refrigerant Lines
If burying refrigerant lines can not be avoided, use the following
checklist.
1. Insulate liquid and suction lines separately.
2. Enclose all underground portions of the refrigerant lines
in waterproof material (conduit or pipe) sealing the ends
where tubing enters/exits the enclosure.
3. If the lines must pass under or through a concrete slab,
ensure lines are adequately protected and sealed.
Refrigerant Line Connections
IMPORTANT
To avoid overheating the service valve, TXV valve, or filter
drier while brazing, wrap the component with a wet rag, or
use a thermal heat trap compound. Be sure to follow the
manufacturer’s instruction when using the heat trap
compound. Note: Remove Schrader valves from service
valves before brazing tubes to the valves. Use a brazing
alloy of 2% minimum silver content. Do not use flux.
Torch heat required to braze tubes of various sizes is
proportional to the size of the tube. Tubes of smaller size
require less heat to bring the tube to brazing temperature
before adding brazing alloy. Applying too much heat to
any tube can melt the tube. Service personnel must use
the appropriate heat level for the size of the tube being
brazed. Note: The use of a heat shield when brazing is
recommended to avoid burning the serial plate or the finish
on the unit.
1. The ends of the refrigerant lines must be cut square, deburred, cleaned, and be round and free from nicks or dents.
Any other condition increases the chance of a refrigerant
leak.
3
2. “Sweep” the refrigerant line with nitrogen or inert gas
during brazing to prevent the formation of copper-oxide
inside the refrigerant lines. The POE oils used in R410A applications will clean any copper-oxide present
from the inside of the refrigerant lines and spread it
throughout the system. This may cause a blockage or
failure of the metering device.
3. After brazing, quench the joints with water or a wet cloth
to prevent overheating of the service valve.
4. Ensure the filter drier paint finish is intact after brazing. If
the paint of the steel filter drier has been burned or chipped,
repaint or treat with a rust preventative. This is especially
important on suction line filter driers which are continually wet when the unit is operating.
NOTE: Be careful not to kink or dent refrigerant lines. Kinked
or dented lines will cause poor performance or compressor
damage.
Do NOT make final refrigerant line connection until plugs are
removed from refrigerant tubing.
NOTE: Before brazing, verify indoor piston size by checking
the piston kit chart packaged with indoor unit.
Leak Testing (Nitrogen or Nitrogen-Traced)
System Evacuation
Condensing unit liquid and suction valves are closed to contain the charge within the unit. The unit is shipped with the
valve stems closed and caps installed. Do not open valves
until the system is evacuated.
WARNING
REFRIGERANT UNDER PRESSURE!
Failure to follow proper procedures may cause
proper ty damag e , pe rsonal injury or de a th.
NOTE: Scroll compressors should never be used to evacuate
or pump down a heat pump or air conditioning system.
CAUTION
Prolonged operation at suction pressures less than 20
psig for more than 5 seconds will result in overheating of
the scrolls and permanent damage to the scroll tips, drive
bearings and internal seal.
1. Connect the vacuum pump with 250 micron capability to
the service valves.
2. Evacuate the system to 250 microns or less using suction and liquid service valves. Using both valves is necessary as some compressors create a mechanical seal
separating the sides of the system.
WARNING
To avoid the risk of fire or explosion, never use
oxygen, high pressure air or flammable gases for leak
testing of a refrigeration system.
WARNING
To avoid possible explosion, the line from the
nitrogen cylinder must include a pressure regulator
and a pressure relief valve. The pressure relief valve
must be set to open at no more than 150 psig.
Pressure test the system using dry nitrogen and soapy water
to locate leaks. If you wish to use a leak detector, charge the
system to 10 psi using the appropriate refrigerant then use
nitrogen to finish charging the system to working pressure then
apply the detector to suspect areas. If leaks are found, repair
them. After repair, repeat the pressure test. If no leaks exist,
proceed to system evacuation.
3. Close pump valve and hold vacuum for 10 minutes. Typically pressure will rise during this period.
• If the pressure rises to 1000 microns or less and remains
steady the system is considered leak-free; proceed to
startup.
5000
4500
4000
3500
MICRONS
3000
IN
2500
ACUUM
2000
V
1500
1000
500
0 1 2 3 4 5 6 7 8 9
CONDENSIBLES OR SMALL
LEAK PRESENT
NO LEAKS
NO CONDENSIBLES
MINUTES
LEAK(S)
PRESENT
10
4
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