Taco SR501 User Manual

Aquastat Wiring
TV T
Z
L1
(HOT)
CIRCULATOR
ON BOILER
(IF ATTACHED)
B2
C2
B1
C1
TACO
ZONE
CONTROL
HONEYWELL L8124G & L OR EQUAL
120 VAC
INPUT
ZR
END SWITCH
L1
L2
(NEUTRAL)
L2
ZC
LINE
VOLTAGE
OIL BURNER
RELAY OR
GAS VALVE
81
L1 L2
T T
L1
(HOT)
L2
(NEUTRAL)
LINE VOLTAGE
OIL BURNER RELAY
OR GAS VALVE
CIRCULATOR
ON BOILER
(IF ATTACHED)
B2
C1
B1ZR
TACO
ZONE
CONTROL
HONEYWELL L8124M OR EQUAL
120 VAC
INPUT
C2
ZC
END SWITCH
L1 L2
T T
L1
(HOT)
L2
(NEUTRAL)
LINE VOLTAGE
OIL BURNER RELAY
OR GAS VALVE
CIRCULATOR
ON BOILER
(IF ATTACHED)
C1 B2B1
TACO
ZONE
CONTROL
HONEYWELL L8148A OR EQUAL
120 VAC
INPUT
C2
END SWITCH
3

Taco SR501 Specifications

General

Model	SR501
Category	Control Unit
Input Voltage	120 VAC
Frequency	60 Hz
Switch Type	SPDT
Enclosure Rating	NEMA 1
Type	Relay
Operating Temperature	0°C to 40°C
Relay Output	24 VAC