Hoshizaki MWH KML-631MAH, MWH KML-451MAH Water-Cooled Models Connection to a Closed Loop System

(2) Connection to a Closed Loop System

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

•Shut-off valves and drain valves must be installed at both the condenser water supply inlet and condenser return outlet.

•Minimum water flow to the condenser is 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 return 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 return outlet temperature 5 minutes after a freeze cycle starts. If the condenser return 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

Vent Tube

Icemaker

Drain Outlet

3/4" FPT

Bin Drain Outlet

3/4" FPT

Fig. 6

Model Shown: KML-451MWH

Minimum 1/4" Nominal ID Copper

Water Tubing or Equivalent

Icemaker

Shut-Off Valve

	Drain Valve
Ice	Be sure there is sufficient
Storage
	extra water supply line and
Bin
	drain line for the appliance
	to be pulled out for service.
	Separate piping to approved
	drain. Leave a 2-inch (5-cm)
	vertical air gap between the
	end of each pipe and the
	drain.
	Vent Tube
	2-inch (5-cm) air gap
	Minimum 3/4" Nominal ID
	Hard Pipe or Equivalent

Water-Cooled Models
Connection to a Closed Loop System	Floor Drain

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