© Baxi Heating UK Ltd 2008
30
5. Wiring Diagrams
Ov
erheat
Stat
Spar
k
Gener
ator
Spar
k
Electrode
Flame
Detection
Electrode
Fa
n
Gas
V
alv
e
Flo
w
Ther
mistor
Casting
Ther
mistor
Air Pressure
Switch
Ear
th to
Bur
ner
L
N
E
SwL
L
N
E
Mains
Pump
g/y
g/y
g/y
g/y
g/y
g/y
b
br
y
r
b
w
p
p
br
b
bk
bk
bk
r
bk
y
y
b
b
or
or
b - b
lue
bk - b
lac
k
br - bro
wn
g/y - g
reen/y
ello
w
or - or
ange
p - pur
ple
y - y
ello
w
r - red
w - white
Boiler Wiring
Fig. 39