Utica Boilers UB90-200 Installationsanweisungen

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.

Supply And Return Lines
Packaged boiler receives 1¼” NPT supply and return piping

from top access.

Figure 6 - Multi-zone Boiler Piping with Circulators

4 - NEAR BOILER PIPING

Figure 7 Multi Zone Boiler Piping With Zone Valves

SUPPLY TO

ZONE SERVICE

FLOW CHECK
VALVE

VALVE

RETURN FROM

ZONE SERVICE

ZONE SERVICE
VALVE

ZONES

VALVE

FLOW CHECK

ZONE SERVICE
VALVE

CIRCULATORS

AIR SCOOP

EXPANSION TANK

REDUCED PRESSURE
BACKFLOW PREVENTER

GATE VALVE

FEED

WATER

PRESSURE

REDUCING VALVE

CAN VENT

DIELETRIC UNION

CIRCULATOR

SUPPLY TO

ZONE SERVICE
VALVE

ZONE SERVICE

RETURN FROM

ZONE SERVICE
VALVE

VALVE

ZONES

VALVE

ZONE

VALVE

ZONE SERVICE

ZONES

EXPANSION TANK

AIR SCOOP

REDUCED PRESSURE
BACKFLOW PREVENTER

PRESSURE

REDUCING VALVE

FEED

WATER

GATE VALVE

PURGE VALVE

SHUT OFF VALVE

CAN VENT

DIELETRIC UNION

DIELECTRIC UNIONS