Hoshizaki DCM-500B H Instruction Manual page 19

b) Connection to a Closed Loop System
• Condenser water supply inlet is 1/2" female pipe thread (FPT). A minimum of
1/4" nominal ID copper water tubing or equivalent is required for the condenser water
supply line.
• Condenser return outlet is 3/8" FPT. A minimum of 1/4" nominal ID copper water tubing
or equivalent is required for the condenser return line.
• Shut-off valves and drain valves should be installed at both the condenser water supply
inlet and condenser return outlet.
• The water supply to the condenser should not drop below 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 (rotate
counterclockwise to raise temperature or clockwise to lower temperature).
Drip Tray
Drain Outlet
3/4" FPT
Ice Storage Bin
Drain Outlet
3/4" FPT
Stand
Fig. 6
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Icemaker
Icemaker Water
Supply Inlet
1/2" FPT
Condenser
Return Outlet
3/8" FPT
Vent
Tube
Model Shown: DCM-751BWH
19
Icemaker Water Supply Line
Shut-Off Valve
Condenser Return
Line Drain Valve
Condenser Water Supply
Line Drain Valve
Condenser Water
Supply Inlet
1/2" FPT
Icemaker Water Supply
Line Drain Valve
Condenser Return
Line Shut-Off Valve
Condenser Water Supply
Line Shut-Off Valve
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