Wiring Guide

120 VAC INPUT
TO: "TT" ON BOILER
H
N
SLAVE
120 VAC INPUT
MASTER
TT T
120 VAC INPUT
FOUR ZONE SWITCHING RELAY
120 VAC CIRCULATORS
ZC
INPUT
120 VAC
ZONE 1 ZONE 2 ZONE 3 ZONE 4
ZONE1
ZONE2
ZONE3
THERMOSTATS
SR 504-4
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
XX
RW
RW
RW
RW
ISOLATED
END
SWITCH
THERMOSTATS (24 VAC)
PRIORITY
120 VAC
ZR
HHNHNHNHNH NH
ZONE4
ZONE 2
POWER
ZONE 1
ZONE 3
ZONE 4
LED
INDICATORS
ZONE 4
PRIORITY
OFF
ON
PRIORITY
24 VAC
COM
BOILER
SLAVE
ZONE
NOT
USED
TT T
FOUR ZONE SWITCHING RELAY
120 VAC CIRCULATORS
ZC
INPUT
120 VAC
ZONE 1 ZONE 2 ZONE 3 ZONE 4
ZONE1
ZONE2
ZONE3
THERMOSTATS
SR 504-4
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
XX
RW
RW
RW
RW
ISOLATED
END
SWITCH
THERMOSTATS (24 VAC)
PRIORITY
120 VAC
ZR
HHNHNHNHNH NH
ZONE4
ZONE 2
POWER
ZONE 1
ZONE 3
ZONE 4
LED
INDICATORS
ZONE 4
PRIORITY
OFF
ON
PRIORITY
24 VAC
COM
INDIRECT
WATER HEATER
AQUASTAT OR
THERMOSTAT
ZONE
NOT
USED
JUMPER
JUMPER
PRIORITY
ON
PRIORITY
ON
TWO ZONE SWITCHING RELAY
CIRCULATORS
ZC
INPUT
120 VAC
ZONE 1
ZONE 2
PRIORITY
ZONE1
ZONE2
PRIORITY
SR 502-4
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
XX
RW
RW
ISOLATED
END
SWITCH
THERMOSTATS
120 VAC
ZR
HHNHNH NH
ZONE 2
POWER
ZONE 1
LED
INDICATORS
ZONE 2
PRIORITY
OFF
ON
JUMPER
24 VAC
COM
120 VAC
PRIORITY
OFF
INDIRECT
WATER HEATER
AQUASTAT OR
THERMOSTAT
2 Indirect Water Heaters with Priority Connected to Standard Switching Relays
14