Taco SR501 - Page 11

9
Priority Zoning Circulator Controlling 2 SR504/506 Switching Relays
ZONE 4
ON OFF
PRIORITY
120V RELAY
FUSE 1 AMP
ZONE 1 ZONE 2 ZONE 3 ZONE 4
120 VOLT CIRCULATORS
ZC ZR
X X
END
SWITCH
ZONE1 ZONE2 ZONE3 ZONE4
POWER
INPUT
SR 504
ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4
TT T
BOILER
ZONE 4
ON OFF
PRIORITY
120V RELAY
FUSE 1 AMP
24 VAC
POWER
ZONE 1 ZONE 2 ZONE 3 ZONE 4
120 VAC INPUT
TO: "TT" ON BOILER
120 VOLT CIRCULATORS
ZC ZR
X X
END
SWITCH
ZONE1 ZONE2 ZONE3 ZONE4
POWER
INPUT
SR 504
ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4
TT T
H
N
FOUR ZONE SWITCHING RELAY
WITH OPTIONAL PRIORITY
FOUR ZONE SWITCHING RELAY
WITH OPTIONAL PRIORITY
SLAVE
SLAVE
PRIORITY
OFF
PRIORITY
OFF
T T
24 VAC
POWER
ON
OFF
PRIORITY
POWER IN
THERMOSTAT
BOILER
PRIORITY
PRIORITY ZONING CIRCULATOR
PR-IN PR-OUT LIVE NEUT
1
2
3
4
A
AQUASTAT ON
DHW HEATER
120 VAC INPUT
MASTER
PRIORITY
ON
REMOVE
JUMPER
REMOVE
JUMPER