Plumbing - Hussmann DSF Installation And Operation Manual

Plumbing

Waste Outlet and P-TRAP
The waste outlet is located off the center of the case on
one side allowing drip piping to be run lengthwise under the
fixture. The water seal is factory installed. Do not tighten the
water seal where it connects to the drain fitting. Twisting the
water seal "trap" can cause a water leak in the case's bottom
liner. Do not use thread sealant between ABS drain fitting
and water seal.
A 1-1/2" P-TRAP and threaded adapter are supplied with
each fixture. The P-TRAP must be installed to prevent air
leakage and insect entrance into the fixture.
NOTE: PVC-DWV solvent cement is recommended. Follow the
manufacturer's instructions.
WARNING
The drain and water seal are factory installed.
DO NOT use thread sealant or over-tighten these parts.
DO NOT twist water seal. Damage to the drain fitting or water seal
may occur if overtightened or incorrectly tampered with.
Installing Condensate Drain
Poorly or improperly installed condensate drains can seriously
interfere with the operation of this refrigerator, and result in
costly maintenance and product losses. Please follow the
recommendations listed below when installing condensate
drains to insure a proper installation:
1. Never use pipe for condensate drains smaller than the
nominal diameter of the pipe or P-TRAP supplied with
the case.
2. When connecting condensate drains, the P-TRAP
must be used as part of the condensate drain to
prevent air leakage or insect entrance. Store plumb-
ing system floor drains should be at least 14" off the
center of the case to allow use of the P-TRAP pipe
section. Never use two water seals in series in any one
line. Double P-TRAPS in series will cause a lock and
prevent draining.
3. Always provide as much down hill slope ("fall") as pos-
sible; 1/8" per foot is the preferred minimum. PVC pipe,
when used, must be supported to maintain the 1/8"
pitch and to prevent warping.
4. Avoid long runs of condensate drains. Long runs make
it impossible to provide the "fall" necessary for good
drainage.
5. Provide a suitable air break between the flood rim of
the floor drain and outlet of condensate drain. 1" is
ideal.
6. Prevent condensate drains from freezing:
a. Do not install condensate drains in contact with
non-insulated suction lines. Suction lines should be
insulated with a non absorbent insulation material
such as Armstrong's Armaflex.
b. Where condensate drains are located in dead air
spaces (between refrigerators or between a refrig-
erator and a wall), provide means to prevent freez-
ing. The water seal should be insulated to prevent
condensation.
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