10
Fig. 8: Schematic wiring diagram - Basic 2 x 2 port valve system
Fig.9: Schematic wiring diagram - 3 port mid position valve system. N.B. Must be used in conjunction with 2
port zone valve supplied
PROGRAMMER
BOILER
PUMP
ROOM STAT
ZONE VALVE (DHW)
(SUPPLIED)
ZONE VALVE (HTG)
CYLINDER
TERMINAL BLOCK
JUNCTION BOX
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
L N
L N
G Br Bl O
G Br Bl O GY
1 3 2
L
N
2 3
HTG
DHW
ON
ON
1
2
2
3
1
2
1
2 3
2 3
2
3
L N
(SUPPLY)
1
3
NOTES:
CONTROL TERMINAL NUMBERING MAY DIFFER FROM THOSE SHOWN.
REFER TO INSTRUCTIONS WITH CONTROLS SELECTED.
A DOUBLE POLE ISOLATING SWITCH MUST BE INSTALLED IN THE MAINS SUPPLY.
ALL EARTH CONNECTIONS MUST BE CONNECTED BACK TO THE MAINS EARTH SUPPLY.
CONTROL CIRCUIT FOR AUXILLARY HEATING BOILER ONLY.
SEPARATE CONTROLS WILL BE REQUIRED FOR THE SOLAR PRIMARY CIRCUIT.
PROGRAMMER
BOILER
PUMP
ROOM STAT
ZONE VALVE (DHW)
(SUPPLIED)
ZONE VALVE (HTG)
CYLINDER
TERMINAL BLOCK
JUNCTION BOX
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
L N
G Br Bl O
G
W Bl O GY
1 3 2
L
N
2 3
2
2
3
1
2
2 3
2
3
L N
(SUPPLY)
1
3
L N
HTG
DHW
ON
ON
1 2 3
DHW
OFF
NOTES:
CONTROL TERMINAL NUMBERING MAY DIFFER FROM THOSE SHOWN.
REFER TO INSTRUCTIONS WITH CONTROLS SELECTED.
A DOUBLE POLE ISOLATING SWITCH MUST BE INSTALLED IN THE MAINS SUPPLY.
ALL EARTH CONNECTIONS MUST BE CONNECTED BACK TO THE MAINS EARTH SUPPLY.
CONTROL CIRCUIT FOR AUXILLARY HEATING BOILER ONLY.
SEPARATE CONTROLS WILL BE REQUIRED FOR THE SOLAR PRIMARY CIRCUIT.