Schier Products FS-DUO User manual

Part #: 8070-011-02
Find these instructions online at: schierproducts.com/fs-duo
Contents
Special Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Getting to Know the FS-DUO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Buried Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
On the Floor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
On the Floor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
INSTALLATION GUIDE
FS-DUO Wastewater Sampling Port
© Copyright 2020 Schier, 04/24/2020

page 2 of 8
FS-DUO Installation Guide
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 SV24 Sampling Port Installations - Failure to follow this
guidance voids your warranty
Read all instructions before installation Install in conformance with all local codes
Installation Instructions
Installation instructions and additional
components are included with the
sampling port. Read all instructions
prior to installation. This sampling
port is intended to be installed by a
licensed plumber in conformance
with all local codes.
DO NOT
COMPACT
BACKFILL
A concrete slab to finished grade with rebar is required when
installing interceptor below grade.
Below Grade Installation Slab Requirements
Pedestrian Traffic or
Greenspace Areas Vehicular Traffic Areas
Rebar
4" min. slab 8" min. slabRebar
To prevent connection failure or
damage to fittings, ensure heavy
inlet and outlet piping (such as
cast iron or long runs) is properly
supported or suspended during
entire installation process.
Above grade installations must be
supported by a platform or trapeze
(not included) that contacts the
entire footprint of the unit.
Composite cover C24H2 is
recommended for use in above
grade installations.
Above Grade Installation Additional Support
pipe supports
DO NOT USE CAST
IRON COVERS IN
ABOVE GRADE
OR INDOOR
INSTALLATIONS
THE FS-DUO MUST
BE INSTALLED LEVEL
TO FUNCTION
PROPERLY
Support
Structure
(by others)

GETTING TO KNOW THE FS-DUO
1. Pickable Cast Iron Cover (standard)
2. Cover Gasket
3. Safety Star
4. Safety Star Tether
5. Cover Adapter
6. Cover Adapter Gasket
Assembly(x2) with Upper and
Lower Stainless Steel Band Clamps
7. Flow Distributor Body
8. Bulkhead Connection Retaining Nut
9. Bulkhead Connection Gasket
10. Outlet Bulkhead Connection
4" FPT (x2)
11. 4" Plain End Fitting (x3)
12. Inlet Diffuser
13. Inlet Diffuser Retaining Nut
14. Inlet Bulkhead Connection 4" FPT
15. Composite Cover Bolts
and Washers (x4)
16. Bolted Composite Cover (optional)
17. 7/16" Nut Driver Bit
3
4
5
6
7
8
9
10
11
17
15
16
2
11
10
9
8
12
13
9
8
14
11
page 3 of 8
FS-DUO Installation Guide
1
2

Special Precautions
BURIED INSTALLATION
Install flow distributor as close as possible to and
upstream from interceptors being served
1
Provide at least 16"
clearance above unit for
routine maintenance.
2
16" min.
3 Risers
(94") Max
4
Max Water Level
Risers are
not designed
to retain water
5
3ODOR ALERT!
Interceptor is not a sewer gas
trap. All upstream fixtures must
be trapped
page 4 of 8
FS-DUO Installation Guide
Excavate hole at least 12" larger than sampling port
on all sides and 6" deeper than port bottom.
Lay a level bed of well-packed, crushed aggregate
(approximately 3/4" size rock or sand, with no fines)
in the base of hole.
1a 1b
6" or more
12" 12"
6"
1 Excavate Burial Pit

Screw plain end
fittings (included)
into bulkhead
fittings using
pipe thread
sealant or tape
approved for use
with plastics. 6"
connection types
come pre-installed
from the factory.
2a
4" Plain End
4" FPT
DETAIL
BURIED INSTALLATION
3 Wet or Air Test Piping Per Local Code
Doing so may result in property damage, personal injury or death.
DO NOT AIR TEST UNIT OR RISER SYSTEM! Have a Leak? Call customer
care at 913-951-3300
Hours 8am-5pm CST, M-F
2b
2 Connect Piping
Lower unit into pit and
set level. Mechanically
couple inlet and outlet
drainage lines to unit.
Do not solvent weld.
Vent per local code.
DETAIL
Flexible PVC Coupling
Plain End
Fitting
Drain line
page 5 of 8
FS-DUO Installation Guide

BURIED INSTALLATION
4 Bring Cover Flush-to-Grade
The FS-DUO is ready for burial depth of 22" from finished grade to bottom of unit (or 13-1/2" to centerline of inlet).
Deeper burials will require extending the Cover Adapter and possibly adding risers.
Measure dimension X to determine riser height needed.
4a
Install riser(s) if required
(see instructions included with FCR2).
4b
Riser Height Risers
Needed Required
0" - 4" None (use adapter)
>4" - 34" FCR2 (x1)
>34" - 64" FCR2 (x2)
>64" - 94" FCR2 (x3)
If required, Cover Adapter
may now be tilted up to
10º in any direction using
gasket flexibility.
4f
Adjust Cover Adapter
height as needed.
Maintain a minimum
2-1/2" insertion depth.
2-1
/
2" minimum
4d
Loosen the
Cover Adapter Upper
Band Clamp using 7/16"
Nut Driver Bit.
4c
Tighten Upper
Band Clamp to 5 -8 ft.
lbs. of torque using 7/16"
Nut Driver Bit.
4e
5 Backfill and Finished Grade
TOP VIEW 18"
min
45º
18"
min
18"
min
18"
min
Concrete Slab
Rebar
Pour concrete slab to finished grade.
5b
Vehicular Traffic Areas:
Minimum 8" thick concrete slab with rebar required. Thickness of
concrete around covers to be determined by specifying engineer. If
traffic loading is required the concrete slab dimensions shown are for
guideline purposes only. Concrete to be 28 day compressive strength
to 4,000 PSI. Use No. 4 rebar (ø 1/2") grade 60 steel per ASTM A615:
connected with tie wire. Rebar to be 2-1/2" from edge of concrete and
spaced in a 12" grid with 4" spacing around access openings.
Pedestrian Traffic or Greenspace Areas:
Minimum 4" thick concrete slab with rebar required.
5b1
Rebar
5a
Backfill evenly around tank using crushed aggregate
(approximately 3/4" size rock or sand with no fines) or
flowable fill. Do not compact backfill around unit.
page 6 of 8
FS-DUO Installation Guide

Special Precautions
Install flow distributor as close as
possible to and upstream from
interceptors being served
1
Use composite cover C24H2 only for
above grade installations
2
Above grade installations must be
supported by a platform or trapeze
(not included) that contacts the
entire footprint of the unit.
3
ON THE FLOOR INSTALLATION
Screw plain end
fittings (included)
into bulkhead
fittings using
pipe thread
sealant or tape
approved for use
with plastics. 6"
connection types
come pre-installed
from the factory.
1a
4" Plain End
4" FPT
DETAIL
ODOR ALERT!
Sampling port is not a sewer gas trap. All
upstream fixtures must be trapped
4
1 Connect Piping FLOOR BELOW INSTALLATION DETAIL
Mechanically
couple inlet and
outlet drainage
lines to unit. Do not
solvent weld.
Ensure all upstream
fixtures are trapped.
Vent per local code.
1b
vent per
local code
DETAIL
Flexible PVC Coupling
Plain End
Fitting
Drain line
2 Wet or Air Test Piping Per Local Code
Doing so may result in property damage, personal injury or death.
DO NOT AIR TEST UNIT OR RISER SYSTEM! Leak? Call customer care at
913-951-3300
8a – 5p M – F CST
Provide at least 16"
clearance above unit for
routine maintenance.
16" min.
5
page 7 of 8
FS-DUO Installation Guide
composite cover C24H2
support platform (by others)

INSTALLATION DETAILS
page 8 of 8
FS-DUO Installation Guide
1 Parallel Installations
For flow rates above 100 GPM and higher grease storage requirements the FS-DUO flow distributor must be piped
in parallel with two grease interceptors as shown to ensure the system works properly as designed. Units must be
equally spaced to ensure equal euent flow distribution.
For below grade installations, all units must be level in the excavation pit. It is recommended to install a two-way
cleanout tee extended to finished grade before and after each unit for line cleaning purposes.
All manifolds, piping between units and two-way cleanout tees by others.
TOP VIEW OF 2 GB-250 UNITS PIPED IN PARALLEL
Inlet Manifold
Outlet Manifold
Two-way cleanout tee
extended to grade
(provided by others)
FS-DUO