Hoshizaki DCM-751BAH(-OS), DCM-751BWH(-OS) DCM-751BWH-OS, Connection to a Closed Loop System, Fig

b) Connection to a Closed Loop System

•Condenser water supply inlet is 1/2" female pipe thread (FPT). A minimum of 1/4" nominal

ID copper water tubing or equivalent is required for the condenser water supply line.

•Condenser return outlet is 3/8" FPT. A minimum of 1/4" nominal ID copper water tubing or equivalent is required 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 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).

Storage Bin

Drain Outlet

3/4" FPT

Drip Tray

Drain Outlet

3/4" FPT

Fig. 6

		Minimum 1/4" Nominal ID
	Icemaker	Copper Water Tubing
		Icemaker Water Supply
		Line Shut-Off Valve
	Icemaker Water
	Supply Inlet
	1/2" FPT			Icemaker Water Supply
				Line Drain Valve
	Condenser			Condenser Return
	Return Outlet
	3/8" FPT			Line Shut-Off Valve
				Condenser Water Supply
				Line Shut-Off Valve
			Condenser Return
			Line Drain Valve
			Condenser Water Supply
			Line Drain Valve
Stand		Condenser Water		Separate piping to approved
		Supply Inlet
	Vent			drain. Leave a 2-inch (5‑cm)
		1/2" FPT
	Tube			vertical air gap between the
				end of each pipe and the
				drain.
				2-inch (5-cm)
				air gap
Minimum 3/4" Nominal ID
Hard Pipe
	DCM-751BWH(-OS)
Connection to a Closed Loop System				Floor Drain

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