ONE eF COMMERCIAL GAS MODEL

ONE eF COMMERCIAL GAS MODEL THIS DRAWING SHOWS A SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES; CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS. *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.

**INTAKE VENT PIPE

EXHAUST VENT PIPE

UNION

SHUT OFF VALVE

**AIR INTAKE PIPE OPTIONAL.

T&P RELIEF VALVE

HOT WATER

DISCHARGE TUBE DRAIN OUTLET WATER SUPPLY

BACK FLOW PREVENTER

SHUT OFF VALVE

SHUT OFF VALVE UNION

EXPANSION TANK*

UNION DRAIN

CONDENSATE TRAP