Rev. 0000
5
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, field install the
water seal/90 elbow assembly and coupling, and attach 3/
4” PVC drip piping in the desired orientation. See illustra-
tion. The self-contained merchandiser empties into an
evaporator pan.
INSTALLING DRIP PIPING
Note: PVC-DWV solvent cement is recommended.
Waste Outlet
Nipple
Inside Case
(All Models)
Coupling
90
°
Air Gap
Remote
Refrigeration
Only!
Poorly or improperly installed drip pipes can seriously
interfere with the merchandisers’ operation 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 diam-
eter of the pipe or water seal supplied with the mer-
chandiser.
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” 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 flood rim of the
floor drain and outlet of drip pipe.
6. Prevent drip pipes from freezing:
a. Do Not install drip pipes in contact with 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
health codes.
PLUMBING
