38
XvI - PIPING aND wIRING aPPENDIX
BOILER
CH & DHW
BOILER
CIRCULATOR
ZONE 1 (PRIORITY ZONE)
ZONE 2
ZONE 3
ALTERNATE BOILER
CIRCULATOR
LOCATION
12" MAX APART
(TO PREVENT FORCED
FLOW IN SECONDARY)
ZONE 4
DHW
CIRCULATOR
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
WATER INLET
Piping Diagram 5
Primary/secondary piping with circulators and domestic hot water
*SEE NOTE
NOTE: RECOmmENDED fOR aNTIfREEZE aPPLICaTIONS