25
b) Connection to a Closed Loop System
Condenser Water
Supply Inlet
Minimum Condenser
Water Supply Line Size
Condenser
Return Outlet
Minimum Condenser
Return Line Size
1/2" Female Pipe
Thread (FPT)
1/4" Nominal ID Copper
Water Tubing or Equivalent
3/8" Female Pipe
Thread (FPT)
1/4" Nominal ID Copper
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).
Shut-Off Valve
Icemaker
Drain Outlet
3/4" FPT
Icemaker Water
Supply Inlet
1/2" FPT
Fig. 9
Condenser Water
Supply Inlet
1/2" FPT
Condenser
Return Outlet
3/8" FPT
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the
drain.
Icemaker
Bin Drain Outlet
3/4" FPT
Floor Drain
Drain Valve
Water-Cooled Models
Connection to a Closed Loop System
Model Shown:
KM-650MWH
Ice
Storage
Bin
Icemaker
Condensation
Drain Outlet
3/8" OD Hard Tube
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Vent Tube
Be sure there is sufficient
extra water supply line and
drain line for the appliance
to be pulled out for service.
2-inch (5-cm) air gap
