36
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 Diagram 4
Multizone system with circulators and domestic hot water priority
XvI - PIPInG And wIRInG APPEndIX
nOTE: nOT RECOmmEndEd fOR AnTIfREEZE APPLICATIOnS