Illustrated Wiring Diagram - Baxi 105 HE Installation And Servicing Instructions

Flame
Sensing
Electrode
F2
1 2 3
A1
g/y
bk br
Condensate
Trap
br - brown
bk - black
b - blue
r - red
g - green
g/y - green / yellow
w - white
© Baxi Heating UK Ltd 2011
Fan
Control PCB
b br br bk
4 5 1 2 3 4
A2
5 6 7 8
b b b
Overheat Stat Flue Stat
g/y
Gas Valve

15.0 Illustrated Wiring Diagram

1
2
3
4
5
6
7
8
9
10
A5
A4
br
6
br
5
b
4
b
3
r
2
b
1
1 2 3 4
bk
A3
9
b bk br bk
4
3
1 2
Optional Timer
Central Heating
Temperature Sensor
Domestic Hot Water
Temperature Sensor
Domestic Hot Water Flow
Priority Pressure Switch
r
g
r
g
g
Hydraulic Differential
g
Pressure Switch
r
r
bk
bk
Pump
Mains Input
Link
g/y
b
bk
g/y
Reset Selector Switch
br
br
Fuse
b
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