Hoshizaki KML-250MAH, MRH Connection to an Open Drain System, b KML-631MWH, Water-CooledModels

b) KML-631MWH

(1) Connection to an Open Drain System

Condenser Water	Minimum Condenser	Condenser Drain	Minimum Condenser
Supply Inlet	Water Supply Line Size	Outlet	Drain Line Size
1/2" Female Pipe	1/4" Nominal ID Copper	3/8" Female Pipe	1/4" Nominal ID Hard Pipe
Thread (FPT)	Water Tubing or Equivalent	Thread (FPT)	or Equivalent

•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 (rotate counterclockwise to raise temperature or clockwise to lower temperature).

		Minimum 1/4" Nominal ID Copper
Icemaker Water		Water Tubing or Equivalent
Supply Inlet		Icemaker
1/2" FPT			Shut-Off Valve
Condenser
Drain Outlet
3/8" FPT
Condenser Water			Drain Valve
Supply Inlet
1/2" FPT
Vent Tube
Icemaker	Ice
	Storage		Be sure there is sufficient
Drain Outlet
	Bin		extra water supply line and
3/4" FPT
			drain line for the appliance
Minimum 1/4"			to be pulled out for service.
Nominal ID			Separate piping to approved
Hard Pipe or			drain. Leave a 2-inch (5-cm)
Equivalent			vertical air gap between the
			end of each pipe and the
Bin Drain Outlet			drain.
3/4" FPT
		Vent Tube	2-inch (5-cm) air gap
		Minimum 3/4" Nominal ID
		Hard Pipe or Equivalent
Fig. 7	Water-Cooled Models		Floor Drain
Model Shown:
	Connection to an Open Drain System
KML-631MWH

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