23
3A Fused Supply
L
1
1
8
5
3
1
2
3
E
2
3
4
5
6
7
8
9
10
Terminal Box (Not supplied)
2
3
1
4
2
3
1
2
3
8
7
N
E
L
PL
N
E
SL
L
N
E
DHW ON DHW OFF
Boiler Terminal Strip
Programmer
5
Cylinder Auxiliary Controls
7
6
9
2
1
2
N
Room Stat
1
L
Solar
Controller
3
1
2
E
Solar O/Temp Cutout
3
2
PE
L
N
Solar Differential Controller
11
A1
12
N
T1
T2
T4
T7
4
2
3
L
N
E
CH Pump
A1
N
PE
11
12
E
Solar Pump
3
2
10
NOT USED
G/Y
BL
BR
GR
2 Port Valve
OR
3
2
9
7
G/Y
BL
WH
GR
3 Port Mid Position Valve
5
OR
6
CH ON
See Fig. 23
3A Fused Supply
L
1
1
8
5
3
1
2
3
E
2
3
4
5
6
7
8
9
10
Terminal Box (Not supplied)
2
3
1
4
2
3
1
2
1
9
N
E
L
PL
N
E
SL
L
N
1
2
Boiler Terminal Strip
Programmable Room Stat
5
Cylinder Auxiliary Controls
7
1
6
3
1
2
E
Solar O/Temp Cutout
3
6
2
PE
L
N
Solar Differential Controller
11
A1
12
8
2
N
A3
N
T1
T2
T4
T5
T7
4
2
3
L
N
E
CH Pump
A1
N
PE
11
12
E
Solar Pump
3
2
5
NOT USED
G/Y
BL
BR
GR
DHW 2 Port Valve
OR
3
2
9
7
G/Y
BL
WH
GR
3 Port Mid Position Valve
5
OR
See Fig. 23
A2
N
A1
N
PE
11
12
E
Solar Pump 2
A2
N
A1
N
PE
11
12
E
Solar Pump 2
D.
Auxiliary heating by boiler with 3 port mid position valve system
- no reheat control by solar controller.
E.
Auxiliary heating by boiler with 3 port mid position valve system
- reheat control by solar controller.
9.0
Installation of solar controller
9.8
1. Key to abbreviations:
L
-
Live
N
-
Neutral
E
-
Earth
PL
- Pump
Live
SL
-
Switched Live
G/Y
-
Green and Yellow
BL
-
Blue
BR
-
Brown
GR
-
Grey
OR
-
Orange
WH
-
White
2. The wiring schemes assume the use of an unvented Solar
DHW cylinders.
3. These diagrams are presented for guidance only, terminal
numbers may differ between different manufacturers
equipment.
4. Baxi accept no liability for any loss or damage arising from
any errors or omissions that may be inadvertently contained
within these diagrams.
5. The various ancillary equipment manufacturers should be
consulted to confirm the correct operation of their products
within the system.
6. The Warranty only applies to equipment and controls
supplied with the system.
© Baxi Heating UK 2012
Fig. 26
