10
FIGURE 6 - PIPING DIAGRAM FOR SERIES I BOILERS
WATER SUPPLY
STOP VALVE
DOMESTIC
COLD WATER
IN
ANTI-SCALD/MIXING
VALVE
TEMPERED
WATER
(SHOWERS AND
FAUCETS)
HOT WATER
(DISHWASHER)
BALL VALVE
BACK FLOW PREVENTER
PRESSURE REDUCING VALVE
AIR VENT
EXPANSION TANK
RELIEF VALVE
HYDRONIC SYSTEM
SUPPLY
FLOW VALVE
RETURN
ALTERNATE RETURN LOCATED
ON OPPOSITE SIDE OF BOILER
CIRCULATOR
MAY ALSO MOUNT THE
CIRCULATOR ON SUPPLY
DRAIN
VALVE
DRAFT / SIGHT
PORT
AIR VENT
EXPANSION TANK
RELIEF VALVE
SECONDARY
HIGH LIMIT
HYDRONIC SYSTEM
SUPPLY
FIGURE 7 - PIPING DIAGRAM FOR SERIES II BOILERS
(PIPING THE SAME EXCEPT THE ADDITION OF A SECONDARY HIGH LIMIT)