Taco SR501 User Manual

24 VAC
ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5
FUSE (5 AMP MAX)
TT
TT TT TT TT
ZVC 405
1234 12 34 12 34 1234 1234
ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5
2 WIRE ZONE VALVE
(NO END SWITCH)
JUMPER
3 & 4
TACO
3 WIRE ZONE VALVE
1
2
3
MOTOR
END
SWITCH
THERMOSTAT
THERMOSTAT
THERMOSTAT
4 WIRE ZONE VALVE
(POWER OPEN, SELF CLOSING)
T STAT 1 VALVE 1 T STAT 2 VALVE 2 T STAT 3 VALVE 3 T STAT 4 VALVE 4 T STAT 5 VALVE 5 POWER
FIVE ZONE ZONE VALVE CONTROL
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
END
SWITCH
N/O COM N/C
TO BOILER AQUASTAT RELAY
POWER IN
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
BOILER
H
N
SYSTEM
PUMP
SYSTEM PUMP AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS.
TTT
29
ZVC403/405 with System Pump

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