TWO eF COMMERCIAL GAS MODELS WITH STORAGE TANK

TWO eF COMMERCIAL GAS MODELS WITH STORAGE TANK & RETURN CIRCULATION HOT WATER SHUT OFF VALVE

T&P RELIEF VALVE

SHUT OFF VALVE UNION

EXHAUST VENT **INTAKE PIPE VENT PIPE

STORAGE TANK UNION

T&P RELIEF VALVE DISCHARGE TUBE

SHUT OFF VALVE UNION **INTAKE VENT PIPE

UNION

EXHAUST VENT PIPE

T&P RELIEF VALVE

SHUT OFF VALVE DISCHARGE TUBE

REDUCER BUSHING

BACK-FLOW PREVENTER

SHUT OFF VALVE

DRAIN OUTLET

CIRCULATOR DRAIN OUTLET

SHUT OFF VALVE SYSTEM RETURN

SHUT OFF VALVE (2 PLS.)

WATER SUPPLY

UNION (2 PLS.) DISCHARGE TUBE

BACK-FLOW PREVENTER CONDINSATE TRAP

SHUT OFF VALVE

THIS DRAWING SHOWS A SUGGESTED PIPING DRAIN OUTLET CONFIGURATION AND OTHER DEVICES; CHECK WITH SHUT OFF VALVE LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS. CIRCULATOR *EXPANSION TANK RECOMMENDED TO MINIMIZE ANY PRESSURE BUILD UP SHUT OFF VALVE IF THE WATER SUPPLY PIPING HAS A BACK-FLOW PREVENTER, CHECK VALVE OR WATER METER WITH A CHECK VALVE. BACK-FLOW **AIR INTAKE PIPE OPTIONAL.

PREVENTER

EXPANSION TANK* UNION

SHUT OFF VALVE CONDENSATE TRAP DRAIN