Hoshizaki KM-320MAH Instruction Manual page 25

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 return 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 return outlet temperature 5 minutes after a
freeze cycle starts. If the condenser return 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 (rotate counterclockwise to raise temperature
or clockwise to lower temperature).
Icemaker Water
Supply Inlet
1/2" FPT
Condenser Water
Supply Inlet
1/2" FPT
Condenser
Return Outlet
3/8" FPT
Icemaker
Condensation
Drain Outlet
3/8" OD Hard Tube
Icemaker
Drain Outlet
3/4" FPT
Vent Tube
Bin Drain Outlet
3/4" FPT
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Fig. 9
Model Shown:
Connection to a Closed Loop System
KM-650MWH
Condenser
Return Outlet
3/8" Female Pipe
Thread (FPT)
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Icemaker
Ice
Storage
Bin
Water-Cooled Models
25
Minimum Condenser
Return Line Size
1/4" Nominal ID Copper
Water Tubing or Equivalent
Shut-Off Valve
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Be sure there is sufficient
Drain Valve
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.
2-inch (5-cm) air gap
Floor Drain