30
24 V
A
C
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE 5
ZONE 6
MODE
NORMAL
RESET
FUSE (7 AMP MAX)
TT
TT
TT
TT
TT
TT
ZONE 6 PRIORITY
OFF
ON
ZVC 406
12
34
12
34
12
34
12
34
12
34
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE 5
2 WIRE ZONE V
A
LV
E
(NO END SWITCH)
JUMPER
3 & 4
T
ACO
3 WIRE
ZONE
V
A
L
V
E
1
2
3
MOTOR
END
SWITCH
THERMOSTAT
THERMOSTAT
THERMOSTAT
4 WIRE
ZONE VALVE
(POWER OPEN, SELF CLOSING)
T STAT 1
VALVE 1
T STAT 2
VALVE 2
T STAT 3
VALVE 3
T STAT 4
VALVE 4
T STAT 5
VALVE 5
T STAT 6
VALVE 6
POWER
SIX ZONE ZONE VALVE CONTROL
WITH OPTIONAL PRIORITY
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
POWER IN
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
N/O
COM
ZONE 6 RELAY
DRY
CONT
ACTS
END
SWITCH
EXTRA
END
SWITCH
MAIN
N/C
TO BOILER AQUASTAT RELAY
BOILER
H
N
SYSTEM
PUMP
A
AQUASTAT ON
DHW HEATER
SYSTEM PUMP AND BOILER TURN ON
WHEN ANY ZONE VALVE OPENS.
12
34
ZONE 6
PRIORITY
ZONE
JUMPER 3 & 4
SEE NOTE
Note: When a circulator is used on the
priority zone instead of a zone valve,
jumper 3 and 4 of the priority zone.
TT
T
ZV
C
404/4
06
with S
ystem P
ump
