three commercial hd electric models with return circulation
THREE COMMERCIAL HD ELECTRIC MODELS WITH RETURN CIRCULATION THIS DRAWING SHOWS A SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES; CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS.
HOT WATER
*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.
SHUT OFF VALVE (6 PLS.) UNION (6 PLS.)
T&P RELIEF VALVE BACK FLOW PREVENTOR CIRCULATOR PUMP SHUT OFF VALVE
DISCHARGE TUBE DRAIN SYSTEM RETURN VIEW OF SINGLE WATER HEATER WITH NO PIPING CONNECTIONS WATER SUPPLY
EXPANSION TANK* SHUT OFF VALVE BACK FLOW PREVENTOR
HOT WATER
*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.
SHUT OFF VALVE (6 PLS.) UNION (6 PLS.)
T&P RELIEF VALVE BACK FLOW PREVENTOR CIRCULATOR PUMP SHUT OFF VALVE
DISCHARGE TUBE DRAIN SYSTEM RETURN VIEW OF SINGLE WATER HEATER WITH NO PIPING CONNECTIONS WATER SUPPLY
EXPANSION TANK* SHUT OFF VALVE BACK FLOW PREVENTOR
