Installation Guide

55
ZVC404-EXP Zone Valve Control Controlling a Standard (Non-Expandable) Zone Valve Control
1 2 3 4
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
PRIORITY
ZONE
2 WIRE
ZONE VALVE
(NO END SWITCH)
MUST USE JUMPER
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
POWER
CONTROLS
SEE NOTE 2
ZVC 404-EXP-4
FOUR ZONE EXPANDABLE
ZONE VALVE CONTROL
POWER IN
24 VAC
N/O COM N/C
PUMP END
SWITCH
ZONE 4 PUMP
END SWITCH
SLAVE
PRIORITY ON
RESET
POST PURGE ON
PRIORITY PROTECTION ON
PUMP EXERCISE ON
30 SEC/2 WK
MASTER
OFF
NORMAL
OFF
OFF
OFF
4 MIN/24 HOUR
NOTE 2: When a circulator is used
on the priority zone instead of a
zone valve, jumper 3 and 4 of
the priority zone.
THERMOSTATS (24 VAC)
INDIRECT
WATER HEATE
R
AQUASTAT O
R
THERMOSTAT
T STAT 1
VALVE 1
T STAT 2
VALVE 2
T STAT 3
VALVE 3
T STAT 4
VALVE 4
POWER
LED
INDICATORS
ZONE 1 ZONE 2 ZONE 3 ZONE 4 NET
EXPANSION
MAIN
PRIORITY
X X X X A B C R W C R W C R
W C R W C 1 2
END SWITCH THERMOSTATS (24 VAC) PRIORITY
24 VAC ZONE VALVES
ACCESSORY
PORT
PRIORITY
X X
FUSE
5 AMP
FUSE
5 AMP
Powered from
Transformer A
Powered from
Transformer B
A
B
ZONE VALVE PUMP
(MASTER)
Powered from
Transformer A
Powered from
Transformer B
BOILER
SLAVE (EXISTING CONTROL)
MASTER
TO: “TT” ON BOILER
TO: “TT” ON BOILER WITH
DHW “TT” INPUT
POWER IN
ZONE 2 ZONE 3 ZONE 4
MODE
NORMAL RESET
FUSE (3 AMP MAX)
ZONE 1
T T
T T T T T T
ZONE 4 PRIORITY
OFF
ON
N/O COM
N/C
ZONE 4 RELAY
DRY
CONTACTS
1 2 3 4 1 2 3 4
ZONE 1 ZONE 2
2 WIRE ZONE VALVE
(NO END SWITCH)
JUMPER
3 & 4
TACO
3 WIRE ZONE VALVE
1
2
3
1 2 3 4
ZONE 3
MOTOR
END
SWITCH
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
POWER
END
SWITCH
EXTRA
END
SWITCH
MAIN
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
ZVC 404
FOUR ZONE ZONE VALVE CONTROL
WITH OPTIONAL PRIORITY
1 2 3 4
ZONE 4
PRIORITY
ZONE
JUMPER
3 & 4
SEE NOTE 2
THERMOSTATS (24 VAC)
120 VAC
INPUT
HN
NOTE 2: When a circulator is used
on the priority zone instead of a
zone valve, jumper 3 and 4 of
the priority zone.
PRIORITY
ON
ZONE VALVE PUMP
(SLAVE)
TO: “TT” ON BOILER
FACTORY
INSTALLED
TRANSFORMER
FACTORY
INSTALLED
TRANSFORMER
24 VAC
24 VAC
120 VAC
INPUT
WHITE
BLACK
120 VAC
INPUT
WHITE
BLACK
NOTE 1: Terminals C are for
optional 24V thermostat
COMMON connections.