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Figure 6 - Multi-zone Boiler Piping with Circulators
Figure 7 Multi Zone Boiler Piping With Zone Valves
4 - NEAR BOILER PIPING
CIRCULATORS
PRESSURE
REDUCING VALVE
CAN VENT
AIR SCOOP
EXPANSION TANK
PRESSURE
REDUCING VALVE
CIRCULATOR
CAN VENT
AIR SCOOP
EXPANSION TANK
SHUT OFF VALVE
PURGE VALVE
DIELECTRIC UNIONS
ZONE SERVICE
VALVE
FLOW CHECK
VALVE
RETURN FROM
ZONES
ZONE SERVICE
VALVE
ZONE SERVICE
VALVE
DIELECTRIC UNIONS
DIELETRIC UNION
ZONE SERVICE
VALVE
ZONE
VALVE
SUPPLY TO
ZONES
ZONE SERVICE
VALVE
GATE VALVE
REDUCED PRESSURE
BACKFLOW PREVENTER
FEED
WATER
RETURN FROM
ZONES
ZONE SERVICE
VALVE
ZONE SERVICE
VALVE
DIELETRIC UNION
Supply And Return Lines
Packaged boiler receives 1¼" NPT supply and return piping
from top access.
11
SUPPLY TO
ZONES
ZONE SERVICE
VALVE
FLOW CHECK
VALVE
GATE VALVE
REDUCED PRESSURE
BACKFLOW PREVENTER
FEED
WATER
NOTE: When zoning with
circulators, use furnished circulator
pump as one of zone pumps. Tape
or wire nut each stripped end of
electrical wire for circulator pump
inside junction box to prevent short
circuits. Unplug circulator pump
wiring at integrated boiler control.
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