THREE ZONE ZONE VALVE CONTROL
ZVC 403
1
2
3
4
ZONE 1
ZONE 2
ZONE 3
END
SWITCH
T
FUSE
(5 AMP MAX)
N/O
N/C
COM
POWER IN
FOUR ZONE ZONE VALVE CONTROL
WITH OPTIONAL PRIORITY
OFF
ON
ZONE 4 PRIORITY
MODE
RESET
ZVC 404
ZONE 4
ZONE 4 RELAY
EXTRA
MAIN
NORMAL
(3 AMP MAX)
FOUR ZONE ZONE VALVE CONTROL WITH OPTIONAL PRIORITY
ZVC 404-EXP
PUMP
ENDSW
B
BOILER
A
SLAVE
MASTER
POWER
CONTROLS
FUSE 7 AMP MAX
EXPANSION
PLUG-IN
CARDS
PRIORITY
FIVE ZONE ZONE VALVE CONTROL
ZVC 405
ZONE 5
SIX ZONE ZONE VALVE CONTROL
ZONE 6 PRIORITY
ZVC 406
ZONE 6
ZONE 6 RELAY
(7 AMP MAX)
SIX ZONE ZONE VALVE CONTROL WITH OPTIONAL PRIORITY
ZVC 406-EXP