Zone Controls Wiring Guide

44
PC702 and PC705 Connected To 2 EXP Zone Valve Controls
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
H
N
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
SWITCH SETTINGS
Master/Slave: Master
Priority Zone: On or Off
Reset/Normal: Reset
SWITCH SETTINGS
Master/Slave: Slave
Priority Zone: Off
Reset/Normal: Reset
120 VAC
INPUT
MASTER
SLAVE
DHW
PUMP
DRY
CONTACTS
1234
ZONE 1
1234
ZONE 2
1234
ZONE 3
1234
ZONE 4
1234
ZONE 5
1234
ZONE 6
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
ZVC 406-EXP-4
SIX ZONE EXPANDABLE
ZONE VALVE CONTROL
POWER IN
24 VAC
N/O COM N/C
ZONE 6 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
THERMOSTATS (24 VAC)
T STAT 1
VALVE 1
T STAT 2
VALVE 2
T STAT 3
VALVE 3
T STAT 4
VALVE 4
VALVE 5
T STAT 6
VALVE 6
POWER
LED
INDICATORS
T STAT 5
ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 NET
EXPANSION
MAIN
PRIORITY
XX
XX
AB
CRW
CRW
CRW
CRW
CRW
CRW
C
12
END SWITCH THERMOSTATS (24 VAC)
PRIORITY
24 VAC ZONE VALVES
1234
ZONE 1
1234
ZONE 2
1234
ZONE 3
1234
ZONE 4
1234
ZONE 5
1234
ZONE 6
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
ZVC 406-EXP-4
SIX ZONE EXPANDABLE
ZONE VALVE CONTROL
POWER IN
24 VAC
N/O COM N/C
PUMP END
SWITCH
ZONE 6 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
THERMOSTATS (24 VAC)
INDIRECT
WATER HEATER
AQUASTAT OR
THERMOSTAT
T STAT 1
VALVE 1
T STAT 2
VALVE 2
T STAT 3
VALVE 3
T STAT 4
VALVE 4
VALVE 5
T STAT 6
VALVE 6
POWER
LED
INDICATORS
T STAT 5
ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 NET
EXPANSION
MAIN
PRIORITY
XX
XX
AB
CRW
CRW
CRW
CRW
CRW
CRW
C
12
END SWITCH THERMOSTATS (24 VAC) PRIORITY
24 VAC ZONE VALVES
PRIORITY
PRIORITY
XX
PUMP END
SWITCH
XX
POWER
CONTROLS
ACCESSORY
PORT
FUSE
5 AMP
FUSE
5 AMP
POWER
CONTROLS
ACCESSORY
PORT
FUSE
5 AMP
FUSE
5 AMP
NOTE 2: When a circulator
is used on the priority zone
instead of a zone valve,
jumper 3 and 4 of the
priority zone.
See
NOTE 2
NOTE 1:
Terminals C are for
optional 24V thermostat
COMMON connections.
Powered from Transformer A
A
B
A
B
Powered from Transformer A
Powered from Transformer B
Powered from Transformer A
Powered from Transformer B
Powered from Transformer B
See NOTE 1
TTT
TTT
SYSTEM PUMP AND BOILER TURN ON
WHEN ANY ZONE VALVE OPENS.
SYSTEM
PUMP
ZONE
CONTROL
BOIL
SEN
OUT
SEN
BOILER SENSOR
OUTDOOR
SENSOR
PC702
STAGE
1
STAGE
2
BOILER
#2
BOILER
#1
DHW
DEMAND
WIRING NEEDED ONLY IF
PRIORITY ZONE IS DHW
DHW PUMP TURNS ON ONLY
WHEN PRIORITY ZONE CALLS.
ZONE
CONTROL
BOIL
SEN
OUT
SEN
BOILER SENSOR
OUTDOOR
SENSOR
PC705-2
SUP
SEN
SUPPLY SENSOR
INJECTION
CIRCULATOR
SYSTEM
CIRCULATOR
BLACK
BLUE
RED
GREEN/GROUND
(SEE NOTE B
ON PAGE 22)