Electrical - Benchmark MAIN Installation & Service Instructions Manual

Flame
Sensing
Electrode
1
g/y
A1
br - brown
bk - black
b - blue
r - red
g - green
g/y - green / yellow
w - white
48
© Baxi Heating UK Ltd 2007
Fan
Control PCB
F2
b
2 3 4 5 1 2 3 4
A2
5
bk br b b b
Overheat Stat Flue Stat
g/y
Gas Valve
15.1
Air Pressure
Switch
br br bk b b
A3
1 2 3 4 1 2
3
6 7 8 9
r

15.0 Electrical

Illustrated Wiring Diagram
Pump
Hydraulic Differential
Pressure Switch
bk
10
bk
9
r
8
r
7
g
6
5 g
g
4
3 r
g
2
r
1
A5
Mains Input
br
A4
Link
4 5
6
bk
b br
bk
g/y
Reset Selector Switch
br
Return Heating
Temperature Sensor
Central Heating
NTC Sensor
g/y
b
br
Fuse
b