Electrical Diagram - Potterton assure combi 25 Installation And Service Manual

3 Technical specifications
3.4

Electrical diagram

Fig.4 Electrical wiring diagram
M
M1
E
N
L
L
K
J
Key Description
A Gas valve
B Hall effect sensor
C Flue sensor
D Hydraulic pressure switch
E Heating return sensor
F Heating flow sensor
G DHW NTC sensor
H M2 low voltage external control connection P
18
A
N
r
b g b
r
br
br bk
b
X23 X37
X3
bk
br
X10
g/y
b
X13
bk
r
w
b
b
br
X11
br
g/y
X12
X2
g/y
g/y
g/y
O
bk — black
r — red
B
C
g g
r
b w
g
g
b
b
r
g
b r
X36 X22 X20
P
X1
I
br — brown
w — while
Key Description
I Spark ignition electrode
J Diverter valve motor
K Pump
L Terminal strip
M Fan
N Safety thermostat
O Earth point on boiler chassis
Printed circuit board (PCB)
D
E
g
g
br
br
X24
bk
bk
X31
b — blue
g/y — green/
yellow
7678846 - A - 22052017
F
G
10
M2
9
8
7
6 H
5
4
3
2
1
PN-0000341
g — green