For The Plumber - Scotsman NDE554 Service Manual

NDE554 & NDE654

FOR THE PLUMBER

Water Inlet
Air Cooled Models: Connect a potable, cold water
supply to the 3/8" male flare at the back of the
cabinet. Install a hand valve near the machine to
control the water supply. 3/8" O.D. copper tubing is
recommended.
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.
Water Cooled Models: Connect a separate 3/8"
O.D. copper line with a separate hand valve to
control it to the 3/8" 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.
Drains
Air Cooled Models: There is one ¾ " FPT drain at
the back of the cabinet, the drain line is of the
gravity type, and ¼ inch per foot fall is an
acceptable pitch for the drain tubing. 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 " rigid tubing.
Water Cooled Models: In addition to the above
mentioned drain, a separate condenser drain must
be installed. Connect it to the ½ " condenser drain
connection at the back of the cabinet.
CONFORM TO ALL APPLICABLE CODES
WATER INLET
CABINET
DRAIN
OPTIONAL
WATER
FILTER
WATER INLET
SHUT OFF
VALVE
VENTED
DRAIN TUBE
WATER COOLED DETAIL
CONDENSER
WATER INLET
POTABLE
WATER INLET
March 2000
Page 6
FLOOR DRAIN
CABINET
DRAIN
CONDENSER
DRAIN