GB2 Installation 122721 - schierproducts.com

1 Installation GUIDE. GB2 35/50 GPM Grease Interceptor for Indoor Use Contents Special Precautions .. 2-3. Getting to Know the GB2 .. 4. On the Floor Installation .. 5-7. Buried Installation .. 8-10. Part #: 057-1260-05. Find these instructions online at: SPECIAL PRECAUTIONS. For Schier Grease Interceptor Installations - Failure to follow this guidance voids your warranty DO NOT AIR TEST UNIT OR RISER SYSTEM! Do not install this unit in any manner Doing so may result in property damage, personal injury or death. except as described in these instructions. Installation Instructions High Temperature Kitchen Water Installation instructions and additional If water is entering the interceptor at excessive temperature (over Installation components are included with the instructions 150 F), a drain water tempering valve (DTV) and approved backflow interceptor. Read all instructions prior inside prevention assembly must be installed.

2 Most state and local to Installation . This interceptor is plumbing codes prohibit water above 150 F being discharged into intended to be installed by a licensed the sanitary sewer. Water above 150 F will weaken or deform PVC. plumber in conformance with all Schedule 40 pipe, poly drainage xtures like interceptors and erode local codes. the coating of cast iron (leading to eventual failure). When Installing Interceptor Inside ODOR ALERT! Do not install air If your dishwashing sink(s). gap on outlet side discharges into a oor of interceptor. drain/sink (drain), you must regulate the ow into the drain to avoid an over ow of water onto the kitchen oor. This can be done by installing a valve Fernco or similar rubber ow or ow restriction cap on restriction end cap the sink piping that discharges into the drain. See drawing for guidance. For detailed guidance on indirect connections, go to: Hydrostatic Slabs (or Pressure Slabs).

3 When installed under a concrete slab subject to hydrostatic pressure hydrostatic slab (slab designed to withstand upward lift, usually caused by hydrostatic watertight Interceptor pressure) interceptor concrete must be enclosed in a vault watertight concrete vault. GB2 Installation Guide Page 2 of 10. SPECIAL PRECAUTIONS. For Schier Grease Interceptor Installations - Failure to follow this guidance voids your warranty High Water Table Installations Fully Support Base of Unit Interceptors and risers are not designed Install unit on solid, level surface in concrete floor max water table height to withstand water table height in for direct burial contact with the entire footprint of excess of the top of the unit when buried unit base; for suspended (see gure). If it is possible for this to installations design trapeze to Interceptor occur, install the interceptor and risers in support the wet weight of the unit.

4 A water-tight concrete vault or back ll Interceptor Do not partially support unit or with concrete or owable ll (wet suspend unit using metal concrete and owable back ll should be U-channel to create a trapeze. suspended Installation poured in stages to avoid crushing the interceptor). At risk areas include but are not limited to tidal surge areas, oodplains and areas that receive storm water. Great Basin models that are direct buried in high water table scenarios must be installed Support Inlet and Outlet Piping with an anchor kit. Models GB-50, GB-75, and GB-250 use model AK1. anchor kit. Model GB-500 uses model AK2 anchor kit for use with For above grade installations ensure pipe supports deadmen anchors. Models GB-1000, GGI-750 and GGI-1500 use model heavy inlet and outlet piping (such as AK3 anchor kit for use with deadmen anchors. cast iron or long runs) is properly supported or suspended during the Interceptor entire Installation process to prevent Flush-to-Grade Burials connection failure or damage to bulkhead fittings.

5 Flush-to-Grade buried installations (without a riser) are not recommended for heavy foot traffic areas without the use of an internal gusset support kit SGK2 (for GB2) or SGK3 (for GB3). DO NOT. COMPACT. BACKFILL. Interceptor GB2 Installation Guide Page 3 of 10. GETTING TO KNOW THE GB2. 1 16. 17. 2. 3. 18. 4. 5 12. 6 13. 7. 19. 8. 9. 9. 10. 10. 6. 9. 20. 11. 14. 12 21. 13. 10. 7. 14. 8. 15. 9. 10. 1. Cover 7. 4" Cleanout Plugs (x2) 14. Diffuser Foot Retaining Nuts (x2). 2. Standard Installation Flow 8. Optional Side Outlets 4" FPT (x2) 15. Inlet Diffuser (Foot). Control Cartridge 9. Connection Fitting Gaskets (x4) 16. Cover Bolts (x4). 3. 35 GPM Flow Control Extension 10. Bulkhead Connection 17. Cover Gasket (>5' below kitchen only) Retaining Nuts (x4) 18. Air Relief/Visual Access 4. 50 GPM Flow Control Extension 11. Inlet 4" FPT Connection (>5' below kitchen only) 19.

6 Outlet 4" FPT Connection 12. 3" Plain End Fittings (x2) 20. Outlet Diffuser (Top). 5. Inlet Diffuser (Top). 13. 4" Plain End Fittings (x2) 21. Outlet Diffuser (Foot). 6. Diffuser Retaining Nuts (x2). GB2 Installation Guide Page 4 of 10. ON THE FLOOR Installation . Special Precautions 1 3 4. ODOR ALERT! ODOR ALERT! Provide at least 5-1/2". Interceptor is not a sewer gas clearance above unit for Do not install air trap. All upstream fixtures routine maintenance. gap on outlet side must be trapped of interceptor. 2. 5-1/2" min. Install interceptor as close as possible to fixtures being served 1 Test Tank for Water Tightness Remove cover and ll 1a 1b with water to just above the highest connection. Leak? Cap all For riser system testing (if connection required) ll to nished grade Call customer points with 4" level. CAUTION: Support risers care at 913-951-3300. cleanout plugs using before lling to prevent tipping.

7 Inspect unit, pipe thread sealant or tape connections and gaskets for leaks. Check water 8a 5p M F CST. approved for use with plastics. level at speci c time intervals per local code. 2 Set Up Outlet Diffuser and Install Cleanout Plugs Choose outlet 2a 2b 2c 2d location. Rotate diffuser toward chosen outlet, replace foot ensuring it will point to the back Unscrew diffuser Unscrew diffuser foot wall of the unit Side outlet retaining nut and retaining nut and remove and hand tighten remove outlet diffuser. outlet diffuser foot. foot retaining nut. Cap all unused 2e 2f connection points with 4" cleanout plugs using pipe thread sealant or tape approved for use with plastics. Insert diffuser into chosen outlet and hand tighten retaining nut. Straight-through GB2 Installation Guide Page 5 of 10. ON THE FLOOR Installation . 3 Calibrate Flow Control Figure 1 Note to Plumbing Inspector This interceptor includes certified internal flow control and does not require a dedicated Flow Control Vent (air intake).

8 A. If dimension is 5 feet or less go to Step 4. OR If dimension is greater than 5. feet follow Steps below. Depending on which flow rate is 3a1 3a2 3b desired, attach either the 35 or 50. GPM Flow Control Cartridge Extension using PVC primer/cement. Make sure extension is fully inserted into the cartridge and hold both components firmly together (until cement grabs) to prevent push-out. Rotate flow control cartidge counter-clockwise OR. to release and remove from inlet diffuser 35 GPM 50 GPM. 3c1 3c2. flow control retainer pin cartridge receiver slot Slide flow control cartridge into top of inlet diffuser and rotate clockwise until cartridge drops onto flow control retainer pins. Continue rotating clockwise until pins are fully seated. GB2 Installation Guide Page 6 of 10. ON THE FLOOR Installation . 4 Connect Piping Connect piping using pipe thread sealant or tape 4a 4b approved for use with plastics.

9 Ensure all upstream fixtures are trapped. Vent per local code. 4b1 Next to Sink OR 4b3 Floor Below 4" FPT. 3" PE. 4" PE. Choose inlet and outlet fittings (included). based on pipe size. OR 4b2 Under Sink 5-1/2" min. 5. 1. Wet or Air Test Piping Per Local Code Leak? Call customer care at DO NOT AIR TEST UNIT OR RISER SYSTEM! 913-951-3300. Doing so may result in property damage, personal injury or death. 8a 5p M F CST. GB2 Installation Guide Page 7 of 10. BURIED Installation . Special Precautions 1 2 3. Max Water Level 2 Risers (25") Max Risers are not designed to retain water Install interceptor as close as possible to fixtures being served 1 Test Tank for Water Tightness Remove cover and ll 1a 1b with water to just above the highest connection. Leak? Cap all For riser system testing (if connection required) ll to nished grade Call customer points with 4" level. CAUTION: Support risers care at 913-951-3300.

10 Cleanout plugs using before lling to prevent tipping. Inspect unit, pipe thread sealant or tape connections and gaskets for leaks. Check water 8a 5p M F CST. approved for use with plastics. level at speci c time intervals per local code. 2 Set Up Outlet Diffuser and Install Cleanout Plugs Choose outlet 2a 2b 2c 2d location. Rotate diffuser toward chosen outlet, replace foot ensuring it will point to the back Unscrew diffuser Unscrew diffuser foot wall of the unit Side outlet retaining nut and retaining nut and remove and hand tighten remove outlet diffuser. outlet diffuser foot. foot retaining nut. Cap all unused 2e 2f connection points with 4" cleanout plugs using pipe thread sealant or tape approved for use with plastics. Insert diffuser into chosen outlet and hand tighten retaining nut. Straight-through GB2 Installation Guide Page 8 of 10. BURIED Installation . 3 Calibrate Flow Control Figure 1 Note to Plumbing Inspector This interceptor includes certified internal flow control and does not require a dedicated Flow Control Vent (air intake).