Water-Cooled Condenser; A) Connection To An Open-Drain System - Hoshizaki DKM-500BAH Instruction Manual

2. Water-Cooled Condenser

a) Connection to an Open-Drain System

• Condenser water supply inlet is 1/2" female pipe thread (FPT). A minimum of
3/8" nominal copper water tubing is recommended for the condenser water supply line.
• A condenser water supply line shut-off valve and drain valve should be installed.
• Condenser drain outlet is 3/8" FPT. A minimum of 3/8" nominal hard pipe is
recommended for the condenser drain line.
• 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 (rotate
counterclockwise to raise temperature or clockwise to lower temperature).
Icemaker Water
Supply Inlet
1/2" FPT
Minimum 3/8"
Nominal Copper
Water Tubing
Icemaker
Drain Outlet
3/4" FPT
Vent Tube
Condenser Water
Supply Inlet
1/2" FPT
Condenser Drain
Outlet 3/8" FPT
Storage Bin Drain
Outlet 3/4" FPT
Vent Tube
Fig. 4
Vent Tube
Icemaker
Minimum 3/4"
Nominal Hard Pipe
DKM-500BWH
Connection to an Open-Drain System
Minimum 3/4"
Nominal Hard Pipe
Minimum 3/8"
Nominal Copper
Water Tubing
Separate piping to approved drain.
Leave a 2-inch (5-cm) vertical air
gap between the end of each pipe
and the drain.
Minimum 3/8"
Nominal Hard Pipe
15
Icemaker Water Supply
Line Shut-Off Valve
Icemaker Water Supply
Line Drain Valve
Condenser Water Supply
Line Shut-Off Valve
Condenser Water Supply
Line Drain Valve
2-inch (5-cm) air gap
Floor Drain