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Waste Outlet and Water Seal
On refrigerated merchandisers, remote and self-
contained, the waste outlet is centrally located and
accessible from the rear of the case.
For remote refrigerated merchandisers, fi eld install the
water seal/90 elbow assembly and coupling, and attach
3/4" PVC drip piping in the desired orientation. See
illustration. The self-contained merchandiser empties
into an evaporator pan.
Installing Drip Piping
NOTE:
PVC-DWV solvent cement is recommended. Follow the
Hussmann's instructions.
Waste Outlet
Nipple
Coupling
90°
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 drip pipes to insure a proper installation:
1. Never use drip piping smaller than the nominal
diameter of the pipe or water seal supplied with the
merchandiser.
9. Plumbing
Inside Case
(All Models)
Remote
Refrigeration
Air Gap
Only!
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 fl ow. There
should be a minimum pitch of 1/8" per foot.
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 fl ood rim of the
fl oor drain and outlet of drip pipe.
6. Prevent condensate drains from freezing:
a. Do not install drip pipes in contact with non-
insulated 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.
It is the contractor's responsibility to install
case(s) according to local construction and
7
health codes.
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