Instruction Manual

33
H. Parallel Rack System Connection
WARNING
• Installation must be performed by properly trained and EPA-certied service
personnel.
• Failure to install the appliance within these guidelines may adversely affect safety,
performance, component life, and warranty coverage.
• Connect the line set to the rack system per the rack system manufacturer's
instructions.
NOTICE
• The icemaker is shipped with a nitrogen holding charge. Nitrogen must be vented
from multiple points prior to evacuating the refrigeration circuit.
• 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.
• Ensure that there are no traps and no kinks in the line set. The service loop is not
considered an oil trap.
• Icemaker may be used with refrigerants 404A, 407A, or 407F. See table below for
EPR valve settings.
1. Line Set Size and Rack System Requirements
Line Set Size and Rack System Requirements
Hoshizaki Icemaker
Liquid
Line
Suction
Line
Maximum Load at
90°F (32°C) Ambient
70°F (21°C) Water
Suction Pressure
(Evaporator Pressure Regulator
(EPR) Valve is factory adjusted
for R-404A. Adjust only if
necessary.)
F-1002MLJ 1/4" OD 3/8" OD 5,700 BTU/h R-404A - 31 PSIG
R-407A - 22 PSIG
R-407F - 23 PSIG
• Install a p-trap in the suction line if required by the rack system manufacturer's
instructions.
• Parker quick connect couplings (OS-QUICK) with charging ports are required to
connect the line set to the icemaker.
2. Line Set Installation
1) Route the copper tube liquid line and copper tube suction line (see "II.H.1 Line Set
Size and Rack System Requirements" for details) from the rack system to the icemaker.
Leave a service loop behind the icemaker to allow the icemaker to be pulled out for
service. See Fig. 15. NOTICE! Do not coil extra line set. Fabricate the line set to the
proper length.
2) Insulate the 2 copper tubes separately.