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INSTALLATION INSTRUCTIONS
Refrigerant Piping
The length of refrigerant lines, and the number of bends,
determine the pressure drop which affects capacity,
efficiency, and oil return to the compressor.
The outdoor unit connections are braze type. Tube size
should always be the same diameter as the connections
provided at the service valves. Installing tubing sizes
other than those shown can result in inadequate oil return
to the compressor and excessive refrigerant charge, and
will void the warranty.
Refrigerant Piping
12k
Liquid O.D. (inch)
1/4"
Suction O.D. in ( Std )
1/2"
Suction O.D. in ( Opt)
3/8"
Max.Refrigerant Line
Length (inch)
Max.Elevation Vertical
Lift (inch)
*Pipe length must not be less than 10 feet.
** Oil traps are required every 15 ft. when the outdoor
unit is installed above the indoor unit.
Choose a location that places this unit as close to the
indoor unit as possible. Use only clean refrigeration grade
tubing. Always keep the tube ends capped until you are
ready to make the final connections. Remove burrs from
cut ends of tubing. Use tube benders to avoid kinking.
Insulate the suction line with a wall thickness of at least
3/8". Support the tubing adequately to avoid sags that can
trap oil. Isolate the tubing so as not to transmit noise to
the building structure. Avoid sharp edges that could cut
the insulation or piping.
WARNING
It is illegal to discharge refrigerant into
the atmosphere. Use proper recovery methods and
equipment when working on parts of the unit containing
refrigerant. Service should be performed by a qualified
service agency and certified technician.
Using the appropriate fittings if needed, attach the line
set to the service valve stubs.
Apply heat paste to stub next to the valve and wrap the
valve body with a wet cloth.
At the outdoor service valves, remove the valve cores.
Introduce a purging flow of dry nitrogen through the first
tube, allowing it to flow out of the flared connection stub.
Braze connections with a brazing alloy. 15% braze rod is
recommended.
Repeat the above process for the second tube.
14
Model Number
18k
24k
30k
36k
48k
1/4"
3/8"
3/8"
3/8"
3/8"
1/2"
5/8"
3/4"
3/4"
3/4"
5/8"
3/4"
5/8"
5/8"
7/8"
82
98
33
49
Pairing with A-coils
Manufacture recommend installing AHRI listed matched
indoor and outdoor system. Installing approved matched
indoor and outdoor system will provide optimum
efficiency and best overall system reliability. AHRI
certification for approved matched system can be verified
in the AHRI site, Residential AC and AC coil section.
https://www.ahridirectory.org/Search/SearchHome
Under the warranty, damage caused by a used or
unapproved component is not covered by the Standard
Base Warranty. When installing the Side-discharge
Outdoor Unit with non-AHRI listed 3rd party indoor
equipment, manufacture will presume that any damage to
the outdoor unit was not caused by the indoor equipment
if the following installation guidance is followed.
When installers pair 14 SEER Side-discharge outdoor
with a pre-existing "A coil + gas furnace indoor" system
1) Ensure to change the indoor coil to a new R410a, TXV,
tonnage to tonnage matched A-coil
2) Ensure to install a bi-flow Filter Drier (Field supplied) in
liquid line
3) Ensure the lineset size matches 14 SEER Side-
discharge outdoor as stated in the outdoor unit
installation manual (If existing lineset size is different
new lineset must be installed).
4) Ensure proper airflow
5) Ensure existing linesets are cleaned by flushing if re-
used.
When installers pair 14 SEER Side-discharge outdoor
with a new 3rd party AHU
1) Ensure the 3rd party AHU is a R410a, TXV, tonnage to
tonnage matched AHU
2) Ensure to install a bi-flow Filter Dryer (Field supplied) in
liquid line
3) Ensure the lineset size matches 14 SEER Side-
discharge outdoor as stated in the outdoor unit
installation manual (If existing lineset size is different
new lineset must be installed)
4) Ensure proper airflow
5) Ensure existing linesets are cleaned by flushing if re-
used.
31-5000485 Rev. 4
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