Aquastat Wiring - Taco SR501 Wiring Manual

L1
(HOT) (NEUTRAL)
120 VAC
INPUT
L1 L2
B2 C2
MILLI-VOLTAGE
GAS VALVE
B1 B2
L1
L1
(HOT)
120 VAC
INPUT
TV T
B1 B2
LOW VOLTAGE
GAS VALVE
80
L2
T T
C1 ZC
ZR B1
CIRCULATOR
ON BOILER
(IF ATTACHED)
T T
C
L2 C2
L2
(NEUTRAL)
Z
C1 C2
L1 L2
120 VAC
L1
INPUT
(HOT) (NEUTRAL)

Aquastat Wiring

LINE VOLTAGE
OIL BURNER RELAY
OR GAS VALVE
CIRCULATOR
ON BOILER
(IF ATTACHED)
CIRCULATOR
ON BOILER
(IF ATTACHED)
L2
TACO
ZONE
CONTROL
END SWITCH
HONEYWELL L8124A & C OR EQUAL
TACO
ZONE
CONTROL
END SWITCH
HONEYWELL L8124B OR EQUAL
TACO
ZONE
CONTROL
END SWITCH
HONEYWELL L8124E OR EQUAL