Line Set Installation - GE UUY24ZGDA Installation Instructions Manual

Installation Instructions
Conventional Line Set Installation
Pipe Size
Model
UUY24ZGDA*
UUY36ZGDA*
UUY48ZGDA*
UUY60ZGDA*
Pipe Preparation
• All cut ends are to be round, burr free, and cleaned.
Failure to follow this practice increases the chances
for refrigerant leakage.
• First, wrap the rubber grommet with water saturated
towel, and then weld off the cap closures from the gas
and liquid pipes. Then weld the gas and liquid pipes
with the connecting pipes.
Liquid Pipe
Cap Closure
Welding Torch
Liquid
Connecting Pipe
31-5000710 Rev. 2
External Diameter (inch)
Gas pipe Liquid Pipe
3/4 3/8
Water
Saturated
Towel
Rubber Grommet
Gas Pipe
Refrigerant Line Installation
Refrigerant lines must be connected by a licensed,
EPA certified refrigerant technician in accordance with
established procedures.
IMPORTANT:
• Connecting refrigerant lines must be clean,
dehydrated, refrigerant-grade copper lines. Air handler
coils should be installed only with specified line sizes
for approved system combinations.
• Use care with the refrigerant lines during the
installation process. Sharp bends or possible kinking
in the lines will cause a restriction.
• Do not remove the caps from the lines or system
connection points until connections are ready to be
completed.
1. Route the suction and liquid lines from the fittings on
the indoor coil to the fittings on the outdoor unit. Run
the lines in a direct path, avoiding unnecessary turns
and bends.
2. Ensure that the suction line is insulated over the
entire exposed length and that both suction and
liquid lines are not in direct contact with floors, walls,
ductwork, floor joists, or other piping.
3. Connect the suction and liquid line to the evaporator
coil.
4. To avoid damage; remove the TXV sensing bulb
while brazing. Relocate rubber grommets away from
the heat to avoid melting them.
5. Braze with an alloy of silver or cooper and
phosphorus with a melting point above 1,100°F.
NOTE: Do not use soft solder.
6. Reinstall the TXV sensing bulb and the rubber
grommets after brazing is finished.
7. Make sure the outdoor air conditioning unit has been
put in place according to the Installation Instructions
and is connected to the refrigerant lines.
While brazing, purge the system with Nitrogen to
prevent contamination. Manufacturer recommends
reattaching and insulating the TXV sensing bulb at a 10
or 2 o'clock position on the suction line, outside the coil
housing, no more than one foot from the connection.
Evacuate the system to 500 microns to ensure proper
air and moisture removal (Note: Deep evacuation or
triple evacuation method recommended). Open the
suction service valve slowly and allow the refrigerant to
bleed into the system before opening the liquid service
valve.
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