Priority
T-Stat
Primary Wiring
Burner
Class 2 Wiring
AR861-3II
Primary Wiring
Jumper
Priority
Circ
T-Stat
T-Stat
L8124
A or C
T
T
L1
L2
Circ
G
W
L
R
GZ1
T1 T1 T2 T2 T3 T3
C1
C2
B2
B1
ZR
ZC
HZ1 GZ2 HZ2 GZ3 HZ3
Circ
L2
G
120 VAC
L1
Hot
A
Priority
T-Stat
Primary Wiring
Burner
Class 2 Wiring
AR861-3II
Primary Wiring
Jumper
Priority
Circ
T-Stat
T-Stat
L8124
A or C
T
T
L1
L2
Cad Cell
Circ
G W L
R
GZ1
T1 T1 T2 T2 T3 T3
C1
C2
B2
B1
ZR
ZC
HZ1 GZ2 HZ2 GZ3 HZ3
Circ
L2
G
120 VAC
L1
Hot
A
AR861-2II & AR861-3II APPLICATIONS
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
14
PN 240005122 Rev. D [11/15/2021]
