UTICA BOILERS UB95M-200 Installation, Operation & Maintenance Manual page 41

Wiring Diagram 7 : Primary/Secondary Piping With Zone Valves And Domestic Hot Water (With Circulator)
AR822-II
T T
24V
R W C
L2
L1/3 FACTORY
120
INSTALLED
VAC
JUMPER
APPENDIX A - BOILER PIPING AND WIRING
SWITCH LEGEND
ON
OFF
Yellow
Yellow
Black
White
120 VAC
5 6 6
N.O. N.C.
RELAY
N.O. N.C.
4 4
*BOILER
CIRC
*BOILER CIRCULATOR WILL RUN
WITH ALL CALLS FOR HEAT.
Note: a priority loop zone valve is used with this con guration
INDIRECT WATER
HEATER AQUASTAT
OR THERMOSTAT
ARGO AZ-4CP
CONTROL
X X
STATUS
PRIORITY ON
PRIMARY PUMP
PRIORITY PUMP
X-X CONTACT
ZR ON
PRIMARY PRIORITY
FROM BOILER
PUMP PUMP
N L N L N L ZR ZC
AZ-4CP
41
TANK
CONTROL
T-STAT
T T T T T T
ON
ZC ON
OPTION SWITCH
ZONE 2
PRI ZONE ZONE 3
1 2 3 4 1 2 3 4 1 2 3 4
JUMPER
1
2
3
END DO NOT USE
MOTOR
SWITCH
1 2 3 4
4 WIRE ZONE
VALVE ONLY
Boiler Control Panel
CH T1 L1
CH T2 L2
DWH T1 CH C1
DHW T2 CH C2
A1 DHW C1
A2 DHW C2
OUTDOOR
AIR SENSOR
T-STAT
T T
ZONE VALVE/PUMP
PRIORITY
ZR-ZC
DPM-2
ZONE 4
1 2 3 4
Note: Install
wire jumper
between
terminals 3
and 4 when
END using zone
MOTOR
SWITCH
valves
without an
end switch.
CH
CIRC
DHW
CIRC