G. Connection to an R-404A Parallel Rack System
WARNING
1.Installation must be performed by properly trained and
2.Failure to install the equipment within these guidelines may adversely affect safety, performance, component life, and warranty coverage.
3.The icemaker, line set, and rack system must contain the same type of refrigerant. Mixing of refrigerants will result in improper operation and possible damage to the refrigeration system.
•The rack system must be sized to provide a maximum load of 5,700 BTU/h at 90°F (32°C) ambient temperature and 70°F (21°C) water temperature.
•Install a
•The evaporator pressure regulator (EPR) valve is factory adjusted to sustain a suction pressure of 31 PSIG for a
•The icemaker is shipped with a holding charge of 3.5 oz. of
•Charging
1.Line Set Installation
1)Route a 3/8" OD copper tube suction line and a 1/4" OD copper tube liquid line between the icemaker and the rack system. Leave a service loop behind the icemaker to allow the icemaker to be pulled out for service. See Fig. 11.
CAUTION
Do not coil extra line set. Fabricate the line set to the proper length.
2)Insulate the 2 copper tubes separately.
3)Braze the charging
4)When using couplings to connect the line set to the rack system, braze them to the rack system end of the copper tubes. Otherwise, braze the line set directly to the rack system. Do not open the rack system service valves at this time.
5)Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the line set copper tubes (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). WARNING! DO NOT use
6)Evacuate the line set copper tubes through the charging ports on the Parker quick connect couplings and charge with
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