Connection To An R-404A Parallel Rack System; Line Set Size And Rack System Requirements; Line Set Installation - Hoshizaki F-450MAH(-C) Instruction Manual

H. Connection to an R-404A Parallel Rack System
• Installation must be performed by properly trained and EPA-certified service
personnel.
• Failure to install the appliance within these guidelines may adversely affect safety,
performance, component life, and warranty coverage.
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.

1. Line Set Size and Rack System Requirements

Hoshizaki Liquid
Icemaker Line
F-1001MLH(-C) 1/4"
OD
F-2000MLH(-C) 3/8"
OD
• Install a p-trap in the suction line if required by the rack system's instructions.
• The icemaker is shipped with a holding charge of 3.5 oz. of R-404A.
• Charging port-equipped Parker quick connect couplings are needed 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.
3) Braze the charging port-equipped Parker quick connect couplings to the icemaker end
of the copper tubes. Do not connect the charging port-equipped Parker quick connect
couplings to the icemaker at this time.
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.
WARNING
NOTICE
Line Set Size and Rack System Requirements
Maximum Load at
Suction 90°F (32°C) Ambient
Line 70°F (21°C) Water
3/8" OD 5,700 BTU/h
5/8" OD 11,600 BTU/h
Suction Pressure
(Evaporator Pressure Regulator (EPR)
Valve is factory adjusted. Adjust only if
necessary.)
31 PSIG for a -2°F (-19°C) evaporator
22 PSIG for a -14°F (-26°C) evaporator
32