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4.5 Wiring diagram
32
Remove if
external control
fitted 230Vac
N
230 V
L
Key
16
Fan
32
Central heating pump (not supplied)
34
C.h. fl ow temperature sensor
44
Combination gas valve
49
Overheat cut-off thermostat
81
Spark electrode
82
Ionisation probe
175
Transformer
186
Return sensor
191
Flue temperature sensor
34
34
6
3
X3
X6
8
7
6
5
175
4
3
24 V .
2
1
F2A
S4965V1018
DC F02.1
186
49
T
191
4
3
5
4
10
9
8
7
6
8
7
6
5
2
1
5
4
3
2
1
4
3
2
1
2
1
X1
X2
X7
DSP49A1100
CPD5.1
fi g. 22
Optimax 25 OV
81
82
X1
L
5
10
N
4
9
3
8
V1
44
2
7
V2
1
6
X12
8
16
7
15
6
14
5
13
4
12
3
11
2
10
1
9
X11
3
6
2
5
1
4
1
2
3
4
5
6
X5
GND
TACHO
PWM
24V
16
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