Vac Input; Vac - Taco SR501 Wiring Manual

SR501-EXP Switching Relay Controlling Another SR504/506 Switching Relay
BOILER
12
TO: "TT" ON BOILER
MODE
POWER
MASTER
RESET
CONTROLS
NORMAL
SLAVE
FUSE
1 AMP
MASTER
SLAVE
SR 506
120V RELAY

24 VAC

X X
POWER
END
SWITCH
FUSE 1 AMP
TO: "TT" ON BOILER
AQUASTAT ON
DHW HEATER
A
END ZONE
EXPANSION THERMOSTAT
SWITCH VALVE
X X 1 2 3 4 1 2
T/R T/W COM
SR 501-EXP
FUSE
5 AMP
N H ZC ZR H H
POWER
120VAC 120VAC CIRC PRIORITY
INPUT
INPUT OUTPUT OUTPUT OUTPUT
JUMPER
T
THERMOSTATS
ZONE1 ZONE2 ZONE3 ZONE4 ZONE5 ZONE6
SIX ZONE SWITCHING RELAY
WITH OPTIONAL PRIORITY
ZONE1 ZONE2 ZONE3 ZONE4 ZONE5 ZONE6
ZC ZR
120 VOLT CIRCULATORS
REMOVE
JUMPER
TO: OPTIONAL ZONE VALVE
OR iSeries MIXING VALVE
POWER
T STAT
DHW CIRCULATOR
PRIORITY
OFF
ZONE 6
PRIORITY
ON
OFF
POWER
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE 5
ZONE 6
POWER
INPUT

120 VAC INPUT

H
N