Taco SR502 User Manual

Aquastat Wiring to 24VAC Low Water Cutoff
TV W
T
L1
(HOT)
L2
(NEUTRAL)
CIRCULATOR
ON BOILER
(IF ATTACHED)
L1
C2
L2
120 VAC
INPUT
C1
LOW VOLTAGE
GAS VALVE
B1 B2
HONEYWELL
L8148E
TACO LNA024 or LTA024-2
N H COM NC NO
SPILL
SWITCH
B
R
Z
G
TO
THERMOSTAT
Aquastat Wiring to 120VAC Low Water Cutoff
TV W
T
L1
(HOT)
L2
(NEUTRAL)
CIRCULATOR
ON BOILER
(IF ATTACHED)
L1
C2
L2
120 VAC
INPUT
C1
LOW VOLTAGE
GAS VALVE
B1 B2
HONEYWELL
L8148E
TACO LNA120 OR LTA120-2
N H COM NC NO
SPILL
SWITCH
B
R
Z
G
TO
THERMOSTAT
86

Taco SR502 Specifications

General

Zones	2
Frequency	60 Hz
Relay Type	SPDT
Mounting	Wall mount
Input Voltage	120 VAC
Output Voltage	24 VAC
Enclosure Type	Plastic
Terminal Type	Screw terminal