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3
Install Inlet Diffuser Components
Choose appropriate inlet diffuser component based on diffuser size
3a
Install flow control
cartridge (red) or plate
This unit is certified to ASME A112.14.3 (Type C) and CSA B481.1
and requires internal flow control. External flow control with
vent not required.
Install chosen component
3b
6" Diffusers
Flow Control
Plate
Before
connecting
piping and burial,
fasten flow
control plate to
inlet bulkhead fitting
using supplied screws. Holes in
plate must line up with pre-drilled holes in
bulkhead fitting and grooved side of plate
must face the unit.
OPTIONAL for 4" Diffusers: install extension handle
3c
For easy inlet diffuser
cover or flow control
cartridge removal in
deep burial
installations, 1-1/2" PVC
SCH. 40 pipe may used
as an extension handle.
Before risers have been
installed, cut pipe to length
and attach to top of cover using PVC
primer/cement. Extension handle length
should be about 12" shorter than total
riser height.
Schier | GB-1000-L Installation Guide
4" diffuser
6" diffuser
4" Diffusers
Inlet
Bulkhead Fitting
This unit is supplied with additional components for
use in high flow/ increased head pressure conditions.
• If dimension "A" is 13 feet or less, no additional
components are needed, go to Step 4,
Connect Piping.
• If dimension "A" is more than 13 feet, or a high
flow/increased head pressure condition exists,
follow Steps below.
Remove Safety Star® insert and remove flow control cartridge from
the parts bag. Slide component into top of inlet diffuser and rotate
clockwise until cartridge drops onto the retainer pins. Continue
rotating clockwise until pins are fully seated.
Finished
installation
showing
optional
extension
handle
retainer
pin
receiver
slot
page 5 of 9
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