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SOLUTION
BOILER
BACKFLOW
PREVENTER
PRESSURE
REDUCING VALVE
PRESSURE
GAUGE
TEMPERATURE / PRESSURE
GAUGE
AIR
SEPARATOR
EXPANSION
TANK
BALL VALVE
(TYPICAL)
UNION
(TYPICAL)
PRESSURE
RELIEF VALVE
MAKE UP WATER
FROM
SYSTEM
SYSTEM
CIRCULATOR
TO
SYSTEM
SYSTEM SUPPLY
SENSOR
DRAIN
Y-STRAINER
(RECOMMENDED)
Figure 4-7_Single Boiler Full System Flow
Full System Flow
4 Water connections
32
Installation & Service Manual