Taco SR501 User Manual

8
Priority Zoning Circulator Controlling SR504/506 Switching Relay
SIX ZONE SWITCHING RELAY
WITH OPTIONAL PRIORITY
ZONE 6
ON
OFF
PRIORITY
120V RELAY
120 VOLT CIRCULATORS
ZC ZR
X X
END
SWITCH
POWER
INPUT
120 VAC INPUT
TO: "TT" ON BOILER
ZONE1 ZONE2 ZONE3 ZONE4 ZONE5 ZONE6
ZONE1 ZONE2 ZONE3 ZONE4 ZONE5 ZONE6
FUSE 1 AMP
24 VAC
POWER
SR 506
ZONE 2
POWER
ZONE 1
ZONE 3
ZONE 4
ZONE 5
ZONE 6
ON
OFF
PRIORITY
POWER IN
120 VAC INPUT
THERMOSTAT BOILER PRIORITY
PRIORITY ZONING CIRCULATOR
PR-IN
PR-OUT
LIVE
NEUT
1
2
3
4
THERMOSTATS
BOILER
H
N
A
AQUASTAT ON
DHW HEATER
MASTER
SLAVE
PRIORITY
ON
REMOVE
JUMPER
PRIORITY
OFF
T

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