Hoshizaki KM-1900SRH/3 b Connection to a Closed Loop System, 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

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

•Condenser return outlet is 3/8" FPT. A minimum of 3/8" 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 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		Icemaker Water Supply
	ID Copper Water Tubing		Line Shut-Off Valve
				Icemaker Water Supply
Icemaker Water Supply				Inlet 1/2" FPT
Line Drain Valve
					Condenser Water
Condenser Return Outlet 3/8" FPT					Supply Inlet
					1/2" FPT
Condenser Water Supply Line Shut-Off Valve			Icemaker
Condenser Return Line					Icemaker
Shut-Off Valve
					Drain Outlet
Minimum 3/8" Nominal					3/4" FPT
ID Copper Water Tubing
Condenser Return Line Drain Valve					Condensation
					Drain Outlet
Separate piping to approved			Vent Tube	Bin	3/8" OD Hard
					Tube
drain. Leave a 2 inch (5 cm)
		Condenser Water
vertical air gap between the
end of each pipe and the drain.		Supply Line
		Drain Valve			Bin Drain Outlet
2-inch (5-cm)					3/4" FPT
air gap
			Minimum 3/4"
Floor			Nominal ID Hard Pipe
		KM-1900SWH/3
Drain					Fig. 19
	Connection To A Closed Loop System

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