B) Connection To A Closed Loop System - Hoshizaki KML-250MWH Instruction Manual

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).
Icemaker
Water Supply
Inlet
1/2" FPT
Condenser
Return Outlet
3/8" FPT
Condenser
Water Supply
Inlet
1/2" FPT
Icemaker
Drain Outlet
3/4" FPT
Condenser Water Supply Line
Drain Valve
Condenser Return Line
Drain Valve
Fig. 6
Connection to a Closed Loop System
Icemaker
Bin
KML-250MWH
Separate piping to approved drain.
Leave a 2-inch (5-cm) vertical air
gap between the end of each pipe
and the drain.
Bin Drain Outlet
3/4" FPT
15
Icemaker Water Supply
Line Shut-Off Valve
Condenser Water Supply Line
Shut-Off Valve
Condenser Return Line
Shut-Off Valve
Icemaker Water Supply Line
Drain Valve
2-inch (5-cm) air gap
Floor Drain