UTICA BOILERS UB95M-200 Installation, Operation & Maintenance Manual page 37

Wiring Diagram 5 : Primary/Secondary Wiring With Circulators And Domestic Hot Water
AR822-II
AR822-TT
T
R W
L2 N
120V AC
L1 (HOT)
APPENDIX A - BOILER PIPING AND WIRING
NOTE: IN PLACE OF 115
VOLT ISOLATION RELAY,
OPTIONAL CONTROL
ARGO AR822II
TERMINAL 5 & 6 N.O.
TO DHW T1 & DHW T2
TORQUE TERMINAL
AR822-TT SCREWS
6 TO 7 INCH LBS
T T
24V
NO NC
R W C 5 6 6
15 VA
L2 4 4
NO NC
120
VAC
SILKSCREEN
L1 & L2 TO ARM L &
N ON PRIORITY ZONE
TORQUE TERMINAL
SCREWS
6 TO 7 INCH LBS
T
24V
NO NC
C 5 6 6
L2 4 4
NO NC
120
VAC
OUTDOOR
AIR SENSOR
BOILER CIRC (WILL RUN FOR ALL CH
AND DHW CALLS FOR HEAT)
INDIRECT HOT WATER HEATER
AQUASTAT OR THERMOSTAT
DATA PORT
X-X
ARM-4P
CONTROL WITH
PRIORITY
X X
ISOLATED
ZC
SWITCH
115 V COIL / ISOLATION RELAY
Boiler Control Panel
CH T1 L1
CH T2 L2
DHW T1 CH C1
DHW T2 CH C2
A1 DHW C1
A2 DHW C2
DHW CIRC
37
T-STAT
T-STAT
T-STAT
THERMOSTATS
PRIORITY
ZONE 2 ZONE 3 ZONE 4
ZONE
T 1 T T 2 T T 3 T T 4 T
W R W R W R W
ZR-ZC
ZONE 1 ZONE 2 ZONE 3 ZONE 4
1 2 3 4
L N L N L N L N
ZONE 2 ZONE 3 ZONE 4
ZR
CIRC 2
CIRC 3
CIRC 4
NORMALY OPEN
COMMON
R
24 VAC
@ 1VA
TO EXTRA
ZONE MODULE
PRIORITY ON
L N
120 VAC