Hoshizaki KM-1400SWH/3-M 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" nominal copper water tubing is recommended for the condenser water supply line.

•Condenser return outlet is 3/8" FPT. A minimum of 3/8" nominal copper water tubing 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 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).

Minimum 3/8" Nominal Copper Water Tubing

Icemaker

Water Supply

Inlet

1/2" FPT

Condenser Water

Supply Inlet

1/2" FPT

Condenser

Return Outlet

3/8" FPT

Icemaker

Vent Tube

Minimum 1/2" Nominal Copper Water Tubing

Icemaker Water Supply Line

Shut-Off Valve

Icemaker Water Supply Line

Drain Valve

Condenser Water Supply Line

Shut-Off Valve

Condenser Water Supply Line Drain Valve

Condenser Return Line

Shut-Off Valve

Condenser Return Line Drain Valve

Icemaker	Bin
Drain Outlet
3/4" FPT
Condensation
Drain Outlet
3/8" OD Hard Tube

	Separate piping to approved drain.
	Leave a 2-inch (5-cm) vertical air
	gap between the end of each pipe
Minimum	and the drain.
3/4" Nominal
Hard Pipe
Vent Tube	2-inch (5-cm) air gap

Bin Drain Outlet

See Manufacturer's Instructions

Floor Drain

Fig. 10	KM-1400SWH/3-M
	Connection to a Closed Loop System

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