Taco SR501 User Manual

Aquastat Wiring
L1 L2
T T
L1
(HOT)
L2
(NEUTRAL)
LINE VOLTAGE
OIL BURNER RELAY
OR GAS VALVE
CIRCULATOR
ON BOILER
(IF ATTACHED)
B2 C2 B1ZR
TACO
SWITCHING
RELAY
HONEYWELL L8124A & C OR EQUAL
120 VAC
INPUT
C1 ZC
ZC ZR N H
T
THERMOSTAT
(IF INDEPENDENT ZONE)
XX
END SWITCH
83
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
THERMOSTAT
(IF INDEPENDENT ZONE)
TACO
SWITCHING
RELAY
ZC ZR N HXX
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 N HXX
END SWITCH

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