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a) Factory Line Set Installation
1) Route the factory line set (5/8" OD suction line and 1/2" OD liquid line) from the remote
condensing unit to the icemaker. Leave a service loop behind the icemaker to allow
the icemaker to be pulled out for service. See Fig. 14. Factory fabricated line sets are
precharged and do not need to be evacuated. If the line set is too long or too short, see
"II.E.2.a)(1) Factory Line Set Modification."
• Ensure that there are no traps and no kinks in the line set. The service loop is not
considered an oil trap.
• Do not coil extra line set.
2) Connect the refrigerant lines to the appropriate male fittings on the icemaker first and
then at the remote condensing unit. Make a proper connection as follows:
a. Remove the protective covers from the male fitting and female coupling.
b. Apply Polyol Ester (POE) refrigerant oil or Parker Super O Lube to the entire male
fitting, including O-ring, diaphragm, and threads before making the connection.
See Fig. 15.
Do not use thread sealant on the fittings. Use POE refrigerant oil or Parker Super O
Lube only.
c. Make sure the male fitting and female coupling are properly aligned, then start the
connection by hand to ensure that it is not cross threaded.
d. Tighten the connection with a wrench until it is tight. At this point, the nut has
covered most of the threads on the male fitting.
e. Mark a reference line on the female coupling and the remote condensing unit or
icemaker panel. Using a backup wrench on the back of the female coupling, tighten
the six-sided nut of the female coupling an additional 1/6 turn. See Fig. 16.
(1) Factory Line Set Modification
1) Recover the line set charge through the Schrader access ports on the Parker quick
connect couplings and store it in an approved container. Do not discharge the
refrigerant into the atmosphere. Remove the extra line set length or add extra tubing.
When adding extra tubing, insulate the additional copper tubes separately. Braze the
connections.
2) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace
of refrigerant to the lines through the Schrader access ports on the Parker quick
connect couplings (if using an electronic leak detector), and then raise the pressure
using nitrogen gas (140 PSIG). WARNING! Do not use R-404A as a mixture with
pressurized air for leak testing.
3) Evacuate through the Schrader access ports on the Parker quick connect couplings and
charge with R-404A refrigerant vapor to a pressure of 15 to 30 PSIG. Go to step 2 in
"II.E.2.a) Factory Line Set Installation."
NOTICE
NOTICE
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