UTICA BOILERS Trifire 3 Series Installation, Operation & Maintenance Manual page 23

Figure 19 - Multi-Zone Piping and Wiring With Zone Valves And Domestic Hot Water Priority
(With Zone Valve)
10 - HYDRONIC PIPING
SEE FIGURE 20
(CONSULTER LA FIGURE 20)
24 VAC
120 VAC
TO XFRM
PRIMARY
120VAC
PUMP
23
*
STATUS
PRIORITY ON
PRIMARY PUMP
PRIORITY PUMP
X-X CONTACT
ZR ON
PRIORITY
FROM BOILER
PUMP
PN 240013415 REV A [08/15/2021]
ZONE VALVE / PUMP
PRIORITY
ZR-ZC
DPM-2
OPTION SWITCHES
ZONE VALVE / PUMP
PRIORITY
ZR-ZC
DPM-2
OPTION SWITCHES