WASTE OUTLET AND WATER SEAL
The waste outlet is located in the center end of
these fixtures allowing drip piping to be run
under the fixture lengthwise. A water seal is
supplied with each fixture. The water seal must
be installed at the waste outlet to prevent air
leakage and insect entrance into the fixture.
A
Tee
, adapter, plug and street ell are also
supplied with each merchandiser. PVC-DWV
solvent cement is recommended for drip pipe
installation. Follow manufacturer’s directions.
INSTALLING DRIP PIPING
Poorly or improperly installed drip pipes can
seriously interfere with the merchandiser’s opera-
tion and result in costly maintenance and product
losses. Please follow the recommendations 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. Store
waste drains should be at least 14 in. (356
mm) off center of the case to allow use of the
water seal provided. Never use two water
seals in series in any one drip pipe.
D
OUBLE
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 ft (3 mm per 300 mm). PVC pipe, when
used, must be supported to maintain the pitch
and to prevent warping.
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 nonabsorbent 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. Water seal
may be insulated to prevent condensation.
Island & Multi-deck Island
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0446551_A
3-1
DRIP PIPING AND SPLASHGUARDS
