hussmann P/N 0420057_B - Manual (Page 23)

WASTE OUTLET AND WATER SEAL
The waste outlet is located in front of the fan
plenum 6 ft (1829 mm) from the left-hand of the
merchandiser (facing case front) allowing drip
piping to be run under the fixture lengthwise.
A 1
1 /
2
in. (38 mm) water seal is supplied with
each fixture. The water seal must be installed to
prevent air leakage and insect entrance into the
fixture. A tee, adapter, ell, and plug have been
shipped to allow field installation to determine
direction of drain.
NOTES:
Water seal outlet must clear front skid rail.
PVC–DWV solvent cement is recommended.
Follow the manufacturer’s instructions.
INSTALLING DRIP PIPING
Poorly or improperly installed drip pipes can
seriously interfere with the operation of these
merchandisers, and result in costly maintenance
and product losses. Please follow the recommen-
dations listed below when installing drip pipes to
ensure proper installation.
1. Never use drip piping smaller than the
nominal diameter of the pipe or water seal
supplied with the merchandiser.
2. When connecting drip piping, the water seal
must be used as part of the drip piping to
prevent air leakage or insect entrance. Never
use two water seals in series in any one drip
pipe. Double water seals in series will cause
an air lock and prevent draining.
3. Pitch the drip piping in the direction of flow.
There should be a minimum pitch of 1 / 8 in.
per foot (3 mm per 300 mm).
4. Avoid long runs of drip piping. Long runs
make it impossible to provide the pitch
necessary for good drainage.
5. Provide a suitable air break between
flood rim of the floor drain and outlet
of drip pipe. To meet code on low base
merchandisers, it may be necessary
to install a field-supplied drip pipe
reducer. An alternative is to cut the
last section of drip pipe at an angle.
6. Prevent drip pipes from freezing:
A. Do NOT install drip pipes in contact with
uninsulated suction lines. Suction lines should
be insulated with a non-absorbent insulation
material.
B. Where drip pipes are located in dead air
spaces, such as between merchandisers or
between a merchandiser and a store wall,
provide means to prevent freezing.
Note: To prevent condensation problems, the
water seal should be insulated.
P/N 0420057_B 3-1
Service Merchandisers
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
DRIP PIPING AND SPLASHGUARDS