Hoshizaki KM-650MAH instruction manual KM-650MWH

b) Connection to a Closed Loop System

•Condenser water supply inlet is 1/2" female pipe thread (FPT). A minimum of 3/8" OD copper tubing is recommended for the condenser water supply line.

•Condenser return outlet is 3/8" FPT. A minimum of 3/8" OD hard pipe is recommended 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 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 outlet temperature is not in the proper range, adjust the water‑regulating valve to bring it into range.

Icemaker Water

Supply Inlet

1/2" FPT

Condenser Water

Supply Inlet

1/2" FPT

Condenser

Return Outlet

3/8" FPT

Condensation

Drain Outlet

3/8" OD Stainless

Tube

Icemaker

Drain Outlet

3/4" FPT

Icemaker

Bin

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

Condenser Water Supply Line

Drain Valve

Separate piping to approved drain. Leave a two-inch (5 cm) vertical air gap between the end of each pipe and the drain.

Bin Drain Outlet	Two-inch
3/4" FPT	(5 cm) air
	gap

Condenser Return Line

Drain Valve

Fig. 13	KM-650MWH	Floor	Drain
	Connection to a Closed Loop System

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