Specifications

2 EXP Zone Valve Controls Connected Together with System and DHW Pumps
37
ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6
FUSE 7 AMP MAX
TT
TT TT TT TT TT
ZONE 6
OFF
ON
1234
ZONE 1
1234
ZONE 2
1234
ZONE 3
1234
ZONE 4
1234
ZONE 5
1234
ZONE 6
MODE
NORMALRESET
PRIORITY
ZONE
2 WIRE ZONE VALVE
(NO END SWITCH)
TACO
3 WIRE ZONE VALVE
1
2
3
JUMPER
3 & 4
MOTOR END
SWITCH
4 WIRE ZONE VALVE
(POWER OPEN, SELF CLOSING)
JUMPER
3 & 4
1234
MASTER
SLAVE
POWER
CONTROLS
PLUG-IN
CARDS
PRIORITY
TACO, INC ZVC406-EXP
T STAT 1
T STAT 2
T STAT 3
T STAT 4
T STAT 5
T STAT 6
POWER ON
VALVE 1
VALVE 2
VALVE 3
VALVE 4
VALVE 5
VALVE 6

SEE NOTE
EXPANSION
ZVC 406-EXP
SIX ZONE ZONE VALVE CONTROL
WITH OPTIONAL PRIORITY
24 VAC
POWER IN
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
TO BOILER
AQUASTAT RELAY
N/O COM
ZONE 6 RELAY
N/C
END
SWITCH
A
PUMP
END
SWITCH
B
BOILER
H
N
BOILER
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6
FUSE 7 AMP MAX
TT
TT TT TT TT TT
ZONE 6
OFF
ON
1234
ZONE 1
1234
ZONE 2
1234
ZONE 3
1234
ZONE 4
1234
ZONE 5
MODE
NORMALRESET
2 WIRE
ZONE VALVE
(NO END SWITCH)
TACO
3 WIRE
ZONE VALVE
1
2
3
JUMPER
3 & 4
MOTOR END
SWITCH
4 WIRE
ZONE VALVE
(POWER OPEN, SELF CLOSING)
1234
MASTER
SLAVE
POWER
CONTROLS
PLUG-IN
CARDS
PRIORITY
TACO, INC ZVC406-EXP
T STAT 1
T STAT 2
T STAT 3
T STAT 4
T STAT 5
T STAT 6
POWER ON
VALVE 1
VALVE 2
VALVE 3
VALVE 4
VALVE 5
VALVE 6
EXPANSION
ZVC 406-EXP
SIX ZONE ZONE VALVE CONTROL
WITH OPTIONAL PRIORITY
POWER IN
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
DRY
CONTACTS
N/O COM
ZONE 6 RELAY
N/C
END
SWITCH
A
PUMP
END
SWITCH
B
BOILER
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
Note: When a circulator is used on the
priority zone instead of a zone valve,
jumper 3 and 4 of the priority zone.
SWITCH SETTINGS
Master/Slave: Master
Reset/Normal: Normal
Priority Zone: On
SWITCH SETTINGS
Master/Slave: Slave
Reset/Normal: Normal
Priority Zone: Off
A
AQUASTAT ON
DHW HEATER
TTT
T T T
120 VAC
INPUT
1234
ZONE 6
PRIORITY
ZONE
JUMPER
3 & 4
SEE NOTE
MASTER
SLAVE
SYSTEM PUMP AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS.
DHW PUMP TURNS ON ONLY WHEN PRIORITY ZONE CALLS.
DHW
PUMP
SYSTEM
PUMP