Hoshizaki KM-81BAJ Instruction Manual page 18

2. Water-Cooled Condenser
a) Connection to an Open Drain System
Condenser Water
Supply Inlet
1/2" Female Pipe
Thread (FPT)
• A condenser water supply line shut-off valve and drain valve must be installed.
• In some areas, a back flow preventer may be required in the cooling water circuit.
• 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
Minimum 1/4" 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.
Minimum Condenser
Water Supply Line Size
1/4" Nominal ID Copper
Water Tubing or Equivalent
Trap
1/4" fall
per foot
2-inch (5-cm)
air gap
To approved
floor drain
Floor
Drain
Condenser Drain
Outlet
1/2" Female Pipe
Thread (FPT)
Condenser Drain
Outlet 1/2" FPT
Drain Valve
Shut-off Valve
Fig. 5
18
Minimum Condenser
Drain Line Size
1/4" Nominal ID Hard
Pipe or Equivalent
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