Specifications

14
2 Expandable Switching Relays Connected Together
FOUR ZONE SWITCHING RELAY
WITH OPTIONAL PRIORITY
ZONE 4
ON
OFF
PRIORITY
120V RELAY
FUSE 1 AMP
24 VAC
POWER
24 VAC
POWER
MASTER
PLUG-IN CARDS
RESET NORMAL
SLAVE
POWER
CONTROL
INTERFACE
POWER
CONTROL
INTERFACE
THERMOSTATS
ZONE 1 ZONE 2 ZONE 3 ZONE 4
120 VAC INPUT
120 VOLT CIRCULATORS
ZC ZR
X X
END
SWITCH
ZONE1 ZONE2 ZONE3 ZONE4
POWER
INPUT
SR 504-EXP
ZONE 2
POWER
ZONE 1
ZONE 3
ZONE 4
JUMPER
BOILER
SWITCH SETTINGS
Master/Slave: Slave
Reset/Normal: Normal
Priority Zone: Off
120 VAC INPUT
H
N
SWITCH SETTINGS
Master/Slave: Master
Reset/Normal: Normal
Priority Zone: On
1234
EXPANSION
1234
EXPANSION
SR504-EXP
SIX ZONE SWITCHING RELAY
WITH OPTIONAL PRIORITY
ZONE 6
ON
OFF
PRIORITY
120V RELAY
PLUG-IN CARDS
FUSE 1 AMP
SLAVE
MASTER
RESET NORMAL
120 VOLT CIRCULATORS
ZC ZR
X X
END
SWITCH
POWER
INPUT
TO: "TT" ON BOILER
ZONE1 ZONE2 ZONE3 ZONE4 ZONE5 ZONE6
ZONE1 ZONE2 ZONE3 ZONE4 ZONE5 ZONE6
SR 506-EXP
ZONE 2
POWER
ZONE 1
ZONE 3
ZONE 4
ZONE 5
ZONE 6
JUMPER
DHW
CIRCULATOR
THERMOSTATS
SLAVE
MASTER
A
AQUASTAT
ON DHW
HEATER
T
T