UTICA BOILERS MGB50 Installation, Operation & Maintanance Manual page 9

National Excelsior Company
www.excelsiorhvac.com
WATER INLET
BOILER
HOSE BIB
FLOW CONTROL
VAVLE
MULTIZONE SYSTEM WITH CIRCU-
LATORS AND DHW PRIORITY
WATER INLET
EXPANSION
BOILER
CIRCULATOR
SHUT-OFF
VALVE
CONNECTING SUPPLY AND RETURN PIPING
EXPANSION
TANK
PRIORITY ZONE
CIRCULATOR
SHUT-OFF
VALVE
CIRC 4
CIRC 3
CIRC 2
DHW CIRCULATOR
TANK
PRESSURE
REDUCER VALVE
CHECK VALVE
Subject to change without notice.
Figure #7
CH CIRCULATOR
DHW
CIRCULATOR
PRESSURE
BALL VALVE
REDUCER VALVE
ZONE VALVE
CHECK VALVE
Figure #8
ZONE 1 (PRIORITY ZONE)
BALL VALVE
AIR SEPARATOR
ZONE VALVE
HOSE BIB
9
SINGLE ZONE SYSTEM WITH
DHW PRIORITY
AIR SEPARATOR
ZONE 4
ZONE 3
ZONE 2
FLOW CONTROL
VALVE