ZONE 3
ZONE 2
ZONE 1 (PRIORITY ZONE)
BOILER
ZONE 4
DHW CIRCULATOR
WATER INLET
CIRC 2
CIRC 3
CIRC 4
CIRCULATOR
SHUT-OFF
VALVE
PRESSURE
REDUCER VALVE
CHECK VALVE
BALL VALVE
AIR SEPARATOR
ZONE VALVE
HOSE BIB
FLOW CONTROL
VALVE
EXPANSION
TANK
PiPiNg DiAgrAMS
25
Diagram 5 - Multizone System With Circulators And Domestic Hot Water Priority