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XPG20 SERIES
METAL
SLEEVE
STRAPPING
MATERIAL (AROUND
SUCTION LINE
ONLY)
TAPE OR
WIRE TIE
WIRE TIE
(AROUND
SUCTION
LINE ONLY)
FLOOR JOIST OR
ROOF RAFTER
TAPE OR
WIRE TIE
TO HANG LINE SET FROM JOIST OR RAFTER, USE EITHER METAL
STRAPPING MATERIAL OR ANCHORED HEAVY NYLON WIRE TIES.
8 FEET
8 FEET (2.43 METERS)
STRAP THE SUCTION LINE
TO THE JOIST OR RAFTER
AT 8 FEET (2.43 METERS)
INTERVALS THEN STRAP
THE LIQUID LINE TO THE
SUCTION LINE.
FLOOR JOIST OR
ROOF RAFTER
Figure 13. Refrigerant Line Set: Installing
Horizontal Runs
Brazing Connections
WARNING
Polyol ester (POE) oils used with HFC−410A
refrigerant absorb moisture very quickly. It is very
important that the refrigerant system be kept
closed as much as possible. DO NOT remove line
set caps or service valve stub caps until you are
ready to make connections.
WARNING
When using a high pressure gas
such as dry nitrogen to pressurize
a refrigeration or air conditioning
system, use a regulator that can
control the pressure down to 1 or
2 psig (6.9 to 13.8 kPa).
CAUTION
Brazing alloys and flux contain materials which are
hazardous to your health.
Avoid breathing vapors or fumes from brazing
operations. Perform operations only in well
ventilated areas.
Wear gloves and protective goggles or face shield
to protect against burns.
Wash hands with soap and water after handling
brazing alloys and flux.
WARNING
Danger of fire. Bleeding the
refrigerant charge from only the high
side may result in the low side shell
and suction tubing being
pressurized. Application of a brazing
torch while pressurized may result in
ignition of the refrigerant and oil
mixture − check the high and low
pressures before unbrazing.
1
2
CUT AND DEBUR
CAP AND CORE REMOVAL
Cut ends of the refrigerant lines square (free from nicks or
dents). Debur the ends. The pipe must remain round, do not
pinch end of the line.
Remove service cap and core from both the suction and liquid
line service ports.
