A.O. Smith BTH-120 - One Water Heater, Single Temperature with Horizontal Storage Tank Forced Recirculation with Building Recirculation

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                
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WATER PIPING DIAGRAMS       
ONE WATER HEATER, SINGLE TEMPERATURE WITH HORIZONTAL STORAGE TANK FORCED RECIRCULATION WITH BUILDING RECIRCULATION
LEGEND
TEMPERATURE & PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP DRAIN
FULL PORT BALL VALV
E
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.
FINISHED FLOOR
HOT WATER OUTLET
ALTERNATE TANK TEMPERATURE CONTROL LOCATION
EXPANSION TANK
HOT WATER RETURN
COLD WATER SUPPLY
PIPE T&P TO
OPEN DRAIN
LINE TEMPERATURE CONTROL
TANK TEMPERATURE CONTROL
NOTE: The water heater’s Operating Set Point should be set 5° higher than the Tank Temperature Control in the auxiliary storage tank.
TANK OR LINE TEMPERATURE CONTROL
AOS
STORAGE TANK