Hoshizaki KMD-450MWH, KMD-450MAH instruction manual b Connection to a Closed Loop System

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 1/2" 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 SupplyIcemaker

Inlet

1/2" FPT

Condenser

Water Supply

Inlet

1/2" FPT

CondenserBin

Return Outlet

1/2" FPT

Icemaker

Drain Outlet

3/4" FPT

Condenser Return Line

Drain Valve

Bin Drain Outlet 3/4" FPT

Icemaker Water Supply

Line Shut-Off Valve

Condenser Water Supply Line

Shut-Off Valve

Icemaker Water Supply Line

Drain Valve

Condenser Return Line

Shut-Off 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.

Two-inch (5 cm) air gap

Floor Drain

Fig. 9	KMD-450MWH
	Connection to a Closed Loop System

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