ld atmospheric vent models with return

TWO RESIDENTIAL/LD ATMOSPHERIC VENT MODELS WITH RETURN CIRCULATION SHUT OFF VALVE

THIS DRAWING SHOWS A SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES; CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS.

SYSTEM RETURN

CIRCULATOR

WATER SUPPLY

BACK-FLOW PREVENTER

*EXPANSION TANK RECOMMENDED TO MINIMIZE ANY PRESSURE BUILD UP IF THE WATER SUPPLY PIPING HAS A BACK-FLOW PREVENTER, CHECK VALVE OR WATER METER WITH A CHECK VALVE.

BACK-FLOW PREVENTER SHUT OFF VALVE

SHUT OFF VALVE

EXPANSION TANK* UNION

SHUT OFF VALVE

SHUT OFF VALVE

UNION SHUT OFF VALVE UNION

HOT WATER

T&P RELIEF VALVE

UNION SHUT OFF VALVE

DISCHARGE TUBE

UNION T&P RELIEF VALVE

DRAIN DISCHARGE TUBE DRAIN OUTLET

DRAIN OUTLET DRAIN