19
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. 6
Condenser Water
Supply Inlet
1/2" FPT
Condenser
Return Outlet
3/8" FPT
Separate piping to approved
drain. Leave a 2" (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-660MWJ
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" (5 cm) air gap
