Hoshizaki FD-1001MLH(-C), FD-1001MRH(-C), FD-1001MAH(-C) FD-1001MWH-C, Connection to, Closed Loop

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.

FD-1001MWH(-C)	Condenser	Icemaker Water
Condenser	Return Outlet
	3/8" FPT	Supply Line
Connection to		Drain Valve
a Closed Loop	Icemaker Water
Water Supply
	Supply Line
	Shut-Off Valve
Condenser Shut-Off Valves

To convert to top water supply, install the optional Top Water Supply Kit (HS-2123).

Icemaker Water

Supply Inlet

1/2" FPT

Icemaker Icemaker

Drain Outlet

3/4" FPT

Condenser Drain Valves

Separate piping to approved drain. Leave a 2-inch (5-cm) vertical air gap between the end of each pipe and the drain.

2-inch

(5‑cm) air gap

Condenser Water

Supply Inlet

1/2" FPT

Bin Drain Outlet 3/4" FPT

Storage Bin

Drain Floor

Fig. 16

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