Schier | GB-75-B Installation Guide
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SPECIAL PRECAUTIONS
Do not install this unit in any manner
except as described in these instructions.
Doing so may result in property damage, personal injury or death.
DO NOT AIR TEST UNIT OR RISER SYSTEM!
For Schier Grease Interceptor Installations - Failure to follow this guidance
voids your warranty
Provide at least 16"
clearance above unit for
routine maintenance.
16" min.
Install interceptor as close as possible
to fixtures being served
Installation Instructions
Installation instructions and additional
components are included with the
interceptor. Read all instructions prior to
installation. This interceptor is intended
to be installed by a licensed plumber in
conformance with all local codes.
Suspended Installations
Design trapeze to support the wet
weight of the unit. Do not partially
support unit or suspend unit using
metal U-channel to create a trapeze.
concrete floor
Support Inlet and Outlet Piping
For above grade installations ensure
heavy inlet and outlet piping (such as
cast iron or long runs) is properly
supported or suspended during the
entire installation process to prevent
connection failure or damage to
bulkhead fittings.
pipe supports
ODOR ALERT!
Interceptor is not a
sewer gas trap.
All upstream fixtures
must be trapped
ODOR ALERT!
Do not install air
gap on outlet side
of interceptor.
DO NOT USE CAST IRON
COVERS IN ABOVE GRADE OR
INDOOR INSTALLATIONS
Use composite cover C24H2 for
above grade installations
Fully Support Base of Unit
Install unit on solid, level surface in
contact with the entire footprint of
unit base
High Temperature Kitchen Water
If water is entering the interceptor at excessive temperature (over 150º
F), a drain water tempering valve (DTV) and approved backflow
prevention assembly must be installed. Most state and local plumbing
codes prohibit water above 150º F being discharged into the sanitary
sewer. Water above 150º F will weaken or deform PVC Schedule 40
pipe, poly drainage fixtures like interceptors and erode the coating of
cast iron (leading to eventual failure).
