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7 Domestic water heaters
Installation & Service Manual
Figure 7-3_Multiple water heater_single tank
THERMOMETER
HOT WATER
SUPPLY
DRAIN
TEMPERATURE
& PRESSURE
RELIEF VALVE
(TYPICAL)
FLOW SWITCH
( TYPICAL )
WATER HEATER
CIRCULATOR
( TYPICAL)
STORAGE
TANK
WATER
HEATER
UNION
(TYPICAL)
BALL VALVE
(TYPICAL)
Y-STRAINER
[RECOMMENDED]
( TYPICAL)
PRESSURE RELIEF
VALVE
( TYPICAL )
TEMPERATURE/PRESSURE
GAUGE
(TYPICAL)
EXPANSION
TANK
FLOW CHECK
VALVE ( TYPICAL )
COLD WATER
SUPPLY
MIXING VALVE
BUILDING
RETURN
Please note that these illustrations are meant to show system piping concept only, the installer is responsible
for all equipment and detailing required by local codes.
NOTICE