GEM Models A/W For the Plumber Page 8
Water Inlet:
●Air Cooled Models: The recommended water supply is clean, cold water. Use 3/8 inch O.D. copper tubing,
connect to the 3/8 inch male flare at the back of the cabinet. Install a hand valve near the machine to control
the water supply.
●Water Cooled Models: A separate 3/8 inch O.D. copper line is recommended, with a separate hand valve to
control it. Connect to the 3/8 inch FPT condenser inlet at the back of the cabinet. The water pressure to all
lines must always be above 20 psig, and below 80 psig.
●Water Treatment: In most areas, a water filter of some type will be useful. In areas where the water is
highly concentrated with minerals, the water should be tested by a water treatment specialist, and the
recommendations of the specialist regarding filtration and/or treatment should be followed.
Drains:
●Air Cooled Models: Connect a rigid drain tube to the ¾ FPT drain fitting at the back of the cabinet. The
drain is a gravity type, and a ¼ inch per foot fall is the minimum acceptable pitch for the drain. There should
be a vent at the highest point of the drain line, and the ideal drain receptacle would be a trapped and vented
floor drain. Use only ¾ inch rigid tubing.
●Water Cooled Models: Connect a separate drain line to the ½ inch condenser drain connection at the back
of the cabinet. Do not vent this drain.
●Storage Bin: Connect a separate gravity type drain line to the ice storage bin drain. Vent this drain if there is
a long horizontal run from the bin to the floor drain. Insulation of this drain line is recommended.
WATER COOLED MODELS AIR COOLED MODELS
Floor Drain
Water Inlet
Vented Drain
Water Filter
Condenser Drain Water In
Hand Valve
Bin Drain
Condenser Inlet
Water Filter
Hand Valve
Bin Drain
Condenser Drain
Vented Drain
Condenser Inlet
Vented Drain
Vented Drain
Water In