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Taco SR502 User Manual

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570 Zone Valve to Switching Relay
SR 503
ZONE1 ZONE2 ZONE3
24 VAC
POWER
FUSE 1 AMP
120 VOLT
CIRCULATORS
ZONE1 ZONE2 ZONE3
JUMPERS
N P ZC H X ZR
1
X
2
THREE ZONE SWITCHING RELAY
WITH OPTIONAL PRIORITY
ZONE 2
POWER
ZONE 1
ZONE 3
TO: 120 VAC POWER (NEUTRAL)
TO: 120 VAC POWER (HOT)
TO: "TT" ON AQUASTAT CONTROL
TO: "TT" ON AQUASTAT CONTROL
T
1
2
3
24 VAC
TRANSFORMER
THERMOSTAT
55

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Taco SR502 Specifications

General IconGeneral
Zones2
Frequency60 Hz
Relay TypeSPDT
MountingWall mount
Input Voltage120 VAC
Output Voltage24 VAC
Enclosure TypePlastic
Terminal TypeScrew terminal

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