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6 System piping
FLOW CHECK
VALVE (TYPICAL)
BALL VALVE
(TYPICAL)
EXPANSION
TANK
THERMOMETER
(TYPICAL)
COLD
WATER
SUPPLY
140° HOT
WATER
SUPPLY
HIGH TEMPERATURE
BUILDING RETURN
UNION
(TYPICAL)
LOW TEMPERATURE
BUILDING RETURN
180° HOT
WATER
SUPPLY
MIXING
VALVE
Figure 6-4 Two Temperature - Single Unit
Installation & Service Manual
TM