Installing Drip Piping - Hussmann BEXDWG Installation & Operation Manual

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INSTALLING DRIP PIPING

Poorly or improperly installed drip pipes can
seriously interfere with the merchandiser's
operation and result in costly maintenance and
product losses.
Optional drip pipe arrangements are shown on
the next page. Assemble the components using
PVC specific threaded pipe sealer according to
the manufacturer's direction.
It is the installing contractor's
responsibility to consult local agencies
for local code requirements.
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.
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 / in. per ft (20 mm per 1 m).
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4. Avoid long runs of drip piping. Long runs
make it impossible to provide the pitch
necessary for good drainage.
5. Ensure that drip piping is supported to
relieve any stress on drip pipe connectors
and drain hub.
a. Drip piping MUST be supported 24 inches
from drain hub tee.
6. Provide a suitable air break
between flood rim of the floor drain
and outlet of drip pipe. To meet code
requirements, 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.
7. Prevent drip pipes from freezing:
a. Do NOT install drip pipes in contact
with uninsulated suction lines. Suction lines
should be installed 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.