7
See appendix for listing of additional components.
Quick Reference Boiler Piping and Wiring Guide
7
See appendix for listing of additional components.
CH2
Thermostat
6
5
System
Sensor
4
3
Modulation
Signal
-
+
2
1
CH 2
Thermo sta
t
CH1
Thermostat
4
3
Outdoor
Sensor
2
1
DHW
Sensor or
Aquastat
2
1
Modbus
+
G
-
3
2
1
X7
X4
X6
X5
CH2
Thermostat
6
5
System
Sensor
4
3
Modulation
Signal
-
+
2
1
CH 2
Thermo sta
t
CH1
Thermostat
4
3
Outdoor
Sensor
2
1
DHW
Sensor or
Aquastat
2
1
Modbus
+
G
-
3
2
1
X7
X4
X6
X5
N G L
N G L
N G L
N G
FLAME
SUPPLY
CH PUMP
DHW PUMP
L
N G L
N G L
N G L
N G
FLAME
SUPPLY
CH PUMP
DHW PUMP
L
WATER
SUPPLY
O S
COMBI BOILER
USING ZONE VALVES
PO
WE
R
IN
PO
WE
R
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
PRIORITY
ZONE 1
1 2 3 4
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
24 VAC ZONE VALVES
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOURZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
FOURZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT1
T STAT2
T STAT3
T STAT4
POWER
T STAT1
T STAT2
T STAT3
T STAT4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT1
T STAT2
T STAT3
T STAT4
ZONE 3
ZONE 3
ZONE 2
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
THERMOSTATS (24 VAC)
R W C
R W C
R W C
R W C
R W C
R W C
EXPANSION
A B C
A B C
X X
X X
X X
X X
MAIN
MAIN
PR IOR ITY
END SWITCH
END SWITCH
1 2
1 2
NET
NET
R W C
ZONE 4
PRIORITY
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X
X
PU MP EN D
SW IT CH
X
X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
X
X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
PO
WE
R
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOURZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT1
T STAT2
T STAT3
T STAT4
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X
X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
FU SE
5 AMP
FU SE
5 AMP
FU SE
5 AMP
FU SE
5 AMP
PO
WE
R
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOURZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT1
T STAT2
T STAT3
T STAT4
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X
X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
FU SE
5 AMP
FU SE
5 AMP
ACCESSORY
PORT
ACCESSORY
PORT
POWER
CONTROLS
POWER
CONTROLS
POWER
CONTROLS
PO
WE
R
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOURZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT1
T STAT2
T STAT3
T STAT4
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X
X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
FU SE
5 AMP
FU SE
5 AMP
ACCESSORY
PORT
POWER
CONTROLS
PO
WE
R
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOURZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT1
T STAT2
T STAT3
T STAT4
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X
X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
FU SE
5 AMP
FU SE
5 AMP
ACCESSORY
PORT
POWER
CONTROLS
*
No Pump Setting Changes Needed With This Configuration
Power
120VAC
CH2
Thermostat
6 5
System
Sensor
4 3
Modulation
Signal
-
+
2 1
CH 2
Thermo sta
t
CH1
Thermostat
4 3
Outdoor
Sensor
2 1
DHW
Sensor or
Aquastat
2 1
Modbus
+ G -
3 2 1
X7
X4
X6
X5
CH2
Thermostat
6 5
System
Sensor
4 3
Modulation
Signal
-
+
2 1
CH 2
Thermo sta
t
CH1
Thermostat
4 3
Outdoor
Sensor
2 1
DHW
Sensor or
Aquastat
2 1
Modbus
+ G -
3 2 1
X7
X4
X6
X5
N G L
N G L
N G L
N G
FLAME
SUPPLY
CH PUMP
DHW PUMP
L
N G L
N G L
N G L
N G
FLAME
SUPPLY
CH PUMP
DHW PUMP
L
WATER
SUPPLY
O S
COMBI BOILER
USING ZONE VALVES
PO
W
ER
IN
PO
W
ER
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
PRIORITY
ZONE 1
1 2 3 4
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
24 VAC ZONE VALVES
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOUR ZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
FOUR ZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
ZONE 3
ZONE 3
ZONE 2
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
THERMOSTATS (24 VAC)
R W C
R W C
R W C
R W C
R W C
R W C
EXPANSION
A B C
A B C
X X
X X
X X
X X
MAIN
MAIN
PR IOR ITY
END SWITCH
END SWITCH
1 2
1 2
NET
NET
R W C
ZONE 4
PRIORITY
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X X
PU MP EN D
SW IT CH
X X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
X X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
PO
W
ER
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOUR ZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
FU SE
5 AMP
FU SE
5 AMP
FU SE
5 AMP
FU SE
5 AMP
PO
W
ER
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOUR ZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
FU SE
5 AMP
FU SE
5 AMP
ACCESSORY
PORT
ACCESSORY
PORT
POWER
CONTROLS
POWER
CONTROLS
POWER
CONTROLS
PO
W
ER
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOUR ZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
FU SE
5 AMP
FU SE
5 AMP
ACCESSORY
PORT
POWER
CONTROLS
PO
W
ER
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOUR ZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
FU SE
5 AMP
FU SE
5 AMP
ACCESSORY
PORT
POWER
CONTROLS
*
No Pump Setting Changes Needed With This Configuration
Power
120VAC
CH2
Thermostat
6 5
System
Sensor
4 3
Modulation
Signal
-
+
2 1
CH 2
Thermo sta
t
CH1
Thermostat
4 3
Outdoor
Sensor
2 1
DHW
Sensor or
Aquastat
2 1
Modbus
+ G -
3 2 1
X7
X4
X6
X5
CH2
Thermostat
6 5
System
Sensor
4 3
Modulation
Signal
-
+
2 1
CH 2
Thermo sta
t
CH1
Thermostat
4 3
Outdoor
Sensor
2 1
DHW
Sensor or
Aquastat
2 1
Modbus
+ G -
3 2 1
X7
X4
X6
X5
N G L
N G L
N G L
N G
FLAME
SUPPLY
CH PUMP
DHW PUMP
L
N G L
N G L
N G L
N G
FLAME
SUPPLY
CH PUMP
DHW PUMP
L
WATER
SUPPLY
O S
COMBI BOILER
USING ZONE VALVES
PO
W
ER
IN
PO
W
ER
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
PRIORITY
ZONE 1
1 2 3 4
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
24 VAC ZONE VALVES
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOUR ZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
FOUR ZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
ZONE 3
ZONE 3
ZONE 2
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
THERMOSTATS (24 VAC)
R W C
R W C
R W C
R W C
R W C
R W C
EXPANSION
A B C
A B C
X X
X X
X X
X X
MAIN
MAIN
PR IOR ITY
END SWITCH
END SWITCH
1 2
1 2
NET
NET
R W C
ZONE 4
PRIORITY
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X
X
PU MP EN D
SW IT CH
X
X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
X
X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
PO
W
ER
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOUR ZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X
X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
FU SE
5 AMP
FU SE
5 AMP
FU SE
5 AMP
FU SE
5 AMP
PO
W
ER
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOUR ZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X
X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
FU SE
5 AMP
FU SE
5 AMP
ACCESSORY
PORT
ACCESSORY
PORT
POWER
CONTROLS
POWER
CONTROLS
POWER
CONTROLS
PO
W
ER
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOUR ZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X
X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
FU SE
5 AMP
FU SE
5 AMP
ACCESSORY
PORT
POWER
CONTROLS
PO
W
ER
IN
SLAVE
MASTER
PRIORITY
OFF
RESET
NORMAL
POST PURGE
OFF
PRIOR. PROTECT
OFF
PUMP EXERCISE
OFF
30 SEC / 2 WK
4 MIN / 2 4 HR
PRIORITY
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
24 VAC ZONE VALVES
FOUR ZONE EXPANDABLE
ZONE VALVE CONTROL
ZVC 404-EXP-4
LED
INDICATO RS
VAL VE 1
VAL VE 2
VAL VE 3
VAL VE 4
POWER
T STAT 1
T STAT 2
T STAT 3
T STAT 4
ZONE 3
ZONE 2
ZONE 1
THERMOSTATS (24 VAC)
R W C
R W C
R W C
EXPANSION
A B C
X X
X X
MAIN
PR IOR ITY
END SWITCH
1 2
NET
R W C
ZONE 4
PRIORITY
X
X
PU MP EN D
SW IT CH
N/O COM N/C
ZONE 4 P UMP
EN D SW ITCH
FU SE
5 AMP
FU SE
5 AMP
ACCESSORY
PORT
POWER
CONTROLS
*
No Pump Setting Changes Needed With This Configuration
Power
120VAC
