68
WATER PIPING DIAGRAMS
ONE WATER HEATER, TWO TEMPERATURE
WITH HIGH TEMPERAURE LOOP RECIRCULATION
WITH BUILDING RECIRCULATION
LEGEND
TEMPERATURE & PRESSURE
RELIEF VALVE
PRESSURE RELIEF VALVE
CIRCULATING PUMP
DRAIN
FULL PORT BALL VALVE
TEMPERATURE GAGE
WATER FLOW SWITCH
CHECK VALVE
MIXING VALVE
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
HOT WATER
OUTLET
HO
12” TO 15”
MINIMUM
T
COLD
TEMPERED
WATER
TO FIXTURES
COLD WATER
SUPPLY
TEMPERED WATER
RETURN
HOT WATER
RETURN
EXPANSION
TANK
PIPE T&P TO
OPEN DRAIN
LINE TEMPERATURE
CONTROL
LINE TEMPERATURE
CONTROL
TANK OR LINE TEMPERATURE
CONTROL
MIXING VALVE