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Schier SI-75 Installation Manual Download Page 7

page 7 of 9

Schier | SI-75 Installation Guide

4a

Install plain end fittings 

4b

Connect interceptor to drain lines 

4 

 Connect Piping

4" Plain End

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.

Place unit into final position and set level. Mechanically couple inlet and outlet drainage lines to 
unit. 

Do not solvent weld.

 Ensure all upstream fixtures are trapped. Vent per local code. Installation 

of 2-way cleanout tees to grade (by others) is recommended for buried installations.

Outlet

2-way 

cleanout tee

Inlet

BURIED INSTALLATION

Kitchen floor

Add this vent if unit is installed 
one or more floors below the 
fixtures being served  

Vent per local code

FLOOR BELOW INSTALLATION

COUPLING DETAIL

Drain 
line

Flexible coupling

Plain end fitting

Bulkhead fitting

4" FPT

4" FPT

4" FPT

Summary of Contents for SI-75

Page 1: ...hierproducts com si 75 Contents Special Precautions 2 3 Getting to Know the SI 75 4 Installation 5 9 INSTALLATION GUIDE SI 75 125 Gallon Billy Goat Indoor Outdoor Kitchen Solids Interceptor 913 951 3300 schierproducts com Copyright 2020 Schier 06 23 2020 ...

Page 2: ...s trap All upstream fixtures must be trapped ODOR ALERT Do not install air gap on outlet side of interceptor 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 High Temperature Kitchen Water c...

Page 3: ...see figure If it is possible for this to occur install the interceptor and risers in a water tight concrete vault or backfill with concrete or flowable fill wet concrete and flowable backfill should be poured in stages to avoid crushing the interceptor At risk areas include but are not limited to tidal surge areas floodplains and areas that receive storm water Billy Goat models that are direct bur...

Page 4: ...n gasket 10 Bulkhead connection retaining nut 11 Inlet diffuser 12 Inlet diffuser retaining nut 13 Inlet bulkhead connection 4 FPT 14 4 plain end fitting x2 15 Composite cover bolts and washers x4 16 Bolted composite cover optional 17 Air relief visual access 18 Outlet diffuser retaining nut 19 Outlet diffuser 20 Outlet bulkhead connection standard 4 FPT 21 7 16 nut driver bit 1 15 16 17 18 19 10 ...

Page 5: ...stics Remove cover For base unit testing fill with water to just above the highest connection Inspect unit connections and gaskets for leaks Check water level at specific time intervals per local code Fill Line Excavate hole at least 12 larger than interceptor on all sides and 6 deeper than tank bottom Lay a level bed of well packed crushed aggregate approximately 3 4 size rock or sand with no fin...

Page 6: ...outlet connections attached to the diffusers 3a Choose outlet location 3c Cap unused connections all configurations Side Outlet Go to Step 3b Straight Through Go to Step 3c 3b Reposition outlet diffuser side outlets only Remove safety star insert leave tethered to unit Unscrew diffuser retaining nut and remove outlet diffuser Rotate diffuser toward chosen outlet insert into chosen outlet and hand ...

Page 7: ...on and set level Mechanically couple inlet and outlet drainage lines to unit Do not solvent weld Ensure all upstream fixtures are trapped Vent per local code Installation of 2 way cleanout tees to grade by others is recommended for buried installations Outlet 2 way cleanout tee Inlet BURIED INSTALLATION Kitchen floor Add this vent if unit is installed one or more floors below the fixtures being se...

Page 8: ...mine riser height needed 6a See instructions included with FCR2 Riser Height Risers Needed Required 0 4 None use adapter 4 34 FCR2 x1 34 64 FCR2 x2 64 94 FCR2 x3 Loosen the cover adapter upper band clamp using 7 16 Nut Driver Bit Adjust cover adapter heights as needed Maintain a minimum 2 1 2 insertion depth Tighten upper band clamp to 5 8 ft lbs of torque using 7 16 nut driver Bit If required cov...

Page 9: ...chier model AK1 anchor kit Max water table height for direct burial Model AK1 anchor kit 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 ...

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