Hoshizaki KM-1900SAH/3 - Manual (Page 29)

29
KM-1900SWH/3
Connection To An Open Drain System
Condenser Water Supply Inlet 1/2" FPT
Icemaker Water Supply Inlet 1/2" FPT
Icemaker
Drain Outlet
3/4" FPT
Condensation
Drain Outlet
3/8" OD Hard
Tube
Condenser Drain Outlet 3/8" FPT
Bin
Icemaker
Separate piping to approved drain. Leave a
2 inch (5 cm) vertical air gap between the
end of each pipe and the drain.
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
Fig. 18
2-inch (5-cm)
air gap
Floor
Drain
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
ID copper water tubing or equivalent is required 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 ID hard pipe or equivalent
is required 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).
Bin Drain Outlet
3/4" FPT
Minimum 3/8" Nominal
ID Copper Water Tubing
Minimum 3/4"
Nominal ID Hard Pipe
Vent Tube
Minimum 3/8" Nominal
ID Copper Water Tubing
Minimum 3/8"
Nominal ID Hard Pipe
Vent Tube