ZONE 3
ZONE 2
ZONE 1 (PRIORITY ZONE)
BOILER
WATER INLET
CH & DHW
SYSTEM
CIRCULATOR
*USE FULL PORT ZONE
VALVE. FOR OPTIMUM TANK
PERFORMANCE, CONSIDER
USING ZONE CIRCULATOR
(SEE FIGURE 5)
ZONE 4
CIRCULATOR
SHUT-OFF
VALVE
PRESSURE
REDUCER VALVE
CHECK VALVE
EXPANSION
TANK
AIR SEPARATOR
ZONE VALVE
HOSE BIB
FLOW CONTROL
VALVE
PiPiNg DiAgrAMS
23
Diagram 3 - Multizone Piping With Zone Valves And Domestic Hot Water Priority (With Zone Valve)