Specifications

SR502/503 Switching Relay 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
A
SR 503
ZONE1 ZONE2 ZONE3
24 VAC
POWER
FUSE 1 AMP
ZONE1 ZONE2 ZONE3
JUMPER
N P ZC H X ZR
1
X
2
ZONE 2 POWER ZONE 1
TWO ZONE SWITCHING RELAY
WITH OPTIONAL PRIORITY
PRIORITY
ON
FOUR ZONE SWITCHING RELAY
WITH OPTIONAL PRIORITY
FOUR ZONE SWITCHING RELAY
WITH OPTIONAL PRIORITY
MASTER
SLAVE
SLAVE
PRIORITY
OFF
PRIORITY
OFF
T T
T
T
24 VAC
POWER
ZONE 3
REMOVE
JUMPER
REMOVE
JUMPER
AQUASTAT ON
DHW HEATER
10