49
Fig. 28
- brown
- black
- blue
- white
br
bk
b
w
- green
- green / yellow
- red
- orange
g
g/y
r
o
Control
PCB
X2
X3
X9
X501
1
2
1
2
3
3
4
4
5
5
6
7
8
9
X1
1
2
C
y
linder
Thermistor
Reset
S
elector
S
witch
Flow
Thermistor
Fan
Gas
Valve
Overheat
S
tat
Flame
S
ensing
E
lectrode
Pump
Mains
I
nput
L
in
k
g/
y
b
br
Flue
Thermistor
X400
X401
g
g
b
b
r
r
b
b
b
b
b
br
b
k
g
b
br
g/
y
b
br
b
br
br
b
b
b
br
br
br
b
b
br
r
o
r
o
o
br
b
b
br
Water
Pressure
S
witch
S
par
k
Generator
I
gnition
E
lectrode
9
8
7
5 4
2 1
9
10
8
7 6 5 4 3 2 1
br
b
k
b
b
b
k
br
Diverter
Valve
12
3
4
N
L
w
g
1
4
2
5
3
1
2
a
b
r
o
br
o
b
b
w
Timer
6
3
© Baxi Heating UK Ltd 2012