Installation Guide

Aquastat Wiring
L
1
L
2
T T
L
1
(
HOT)
L
2
(
NEUTRAL)
LINE VOLTAGE
OIL BURNER RELAY
OR GAS VALVE
C
IRCULATOR
O
N BOILER
(IF ATTACHED)
B
2
C
2
B
1
Z
R
TACO
SWITCHING
RELAY
HONEYWELL L8124A & C OR EQUAL
120 VAC
I
NPUT
C
1
Z
C
Z
C
Z
R NH
T
THERMOSTAT
(
IF INDEPENDENT ZONE)
XX
E
ND SWITCH
TV T
Z
L1
(HOT)
CIRCULATOR
ON BOILER
(IF ATTACHED)
B2
C2
B1
C1
HONEYWELL L8124G & L OR EQUAL
120 VAC
INPUT
ZR
L1
L2
(NEUTRAL)
L2
ZC
LINE
VOLTAGE
OIL BURNER
RELAY OR
GAS VALVE
T
T
HERMOSTAT
(IF INDEPENDENT ZONE)
TACO
SWITCHING
RELAY
Z
C
Z
R NH
X
X
END SWITCH
L1 L2
T T
L1
(HOT)
L2
(NEUTRAL)
LINE VOLTAGE
OIL BURNER RELAY
OR GAS VALVE
CIRCULATOR
ON BOILER
(IF ATTACHED)
B2 C2 B1ZR
HONEYWELL L8124M OR EQUAL
120 VAC
INPUT
C1
ZC
T
THERMOSTAT
(IF INDEPENDENT ZONE)
TACO
SWITCHING
RELAY
ZC ZR NH
XX
END SWITCH
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