Refrigerant Piping - GE UUC112WC Instructions D'installation

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-Gas in. 1/4-1/2
Max. Ft.
Refrigerant
Line Length
Max. Ft.
Elevation
Vertical Lift
*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
3/8-5/8 3/8-3/4
82
33
Pairing with A‑coils
Please refer to the AHRI website for the latest approved
system matches.
The outdoor units are shipped with a refrigerant
charge(refer to the table below). An additional charge is
required when the refrigerant line between indoor and
outdoor units exceeds 25ft( Refer to the table below).
Model Number
48K
Factory Charge
98
Liquid O.D. in
49
Suction O.D. in
Max. Refrigerant Line
between Indoor and
Outdoor
Max. Refrigerant Line
elevation between
Indoor and Outdoor
Additional charge
if refrigerant line
exceeding 25 ft
Note: Factory charge for UUC124WCDBA is 100.6 oz and
UUC130WCDBA is 119.9 oz.
Oz 49.4 75.8 97.0 119.9 123.5
Inch 1/4" 1/4" 3/8" 3/8"
Inch 1/2" 1/2" 5/8" 3/4"
Ft 66 66 66 66
Ft 33 33 33 33
oz/ 0.16 0.16 0.32 0.32
ft
141.1
3/8" 3/8"
3/4" 3/4"
66 66
33 33
0.32 0.32
31-5000483 Rev. 3