Hoshizaki KM-81BAJ Instruction Manual page 19

b) Connection to a Closed Loop System
Condenser Water Minimum Condenser
Supply Inlet Water Supply Line Size
1/2" Female Pipe 1/4" Nominal ID Copper
Thread (FPT) Water Tubing or Equivalent
• Shut-off valves and drain valves must be installed at both the condenser water supply inlet
and condenser return outlet.
• Minimum water flow to the condenser is 4 GPM.
• The pressure differential between the condenser water supply inlet and condenser return
outlet must be no less than 10 PSIG.
• When using a glycol blend, the solution mixture should be less than 30% glycol.
• In order to maintain the proper high side pressure, the condenser water supply inlet
temperature should not drop below 45°F (7°C) and the condenser drain outlet temperature
must be in the 104°F to 115°F (40°C to 46°C) range. Once the icemaker installation is
complete, confirm the condenser drain outlet temperature 5 minutes after a freeze cycle
starts. If the condenser drain outlet temperature is not in the proper range, use a flat
blade screwdriver to rotate the adjustment screw on the water-regulating valve until the
temperature is in the proper range.
KM-161BWJ
Icemaker Drain
Outlet 3/4" FPT
Vent Tube
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Be sure there is sufficient
extra water supply line and
drain line for the appliance
to be pulled out for service.
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the
drain.
Trap
1/4" fall per foot
2-inch (5-cm)
air gap
Floor
Drain
19
Condenser Minimum Condenser
Return Outlet Return Line Size
1/2" Female Pipe 1/4" Nominal ID Copper
Thread (FPT) Water Tubing or Equivalent
Condenser Return
Outlet 1/2" FPT
To approved
floor drain
Drain Valve Shut-Off Valve
Fig. 6
Condenser Water
Supply Inlet 1/2" FPT
Icemaker Water Supply
Inlet 1/2" FPT
Minimum 1/4" Nominal ID
Copper Water Tubing or
Equivalent
Shut-off Valve
Drain Valve
Shut-off Valve
Drain Valve