MAINTENANCE INSTRUCTIONS
47
6.6 Wiring diagrams
Electrical connections
M5
M9
M6
M2
1
2
3
4
5
6
6
7
8
M1
1
2
3
4
5
6
1
2
3
4
5
6
7
1
2
3
4
1
2
3
4
5
6
5
4
M10
3
2
1
b
ro
w
n
E
V
2
E
V
1
10000 Ohm
SR
IG
TF
TS
M4
M8
M
1
0
M9
M7
M6
M3
M2
M1
M5
+
b
ro
w
n
lig
h
t-
b
lu
e
b
ro
w
n
o
ra
n
g
e
o
ra
n
g
e
lig
h
t-
b
lu
e
lig
h
t-
b
lu
e
b
ro
w
n
w
h
it
e
-b
lu
e
b
la
c
k
b
ro
w
n
brown
lig
h
t
b
lu
e
b
ro
w
n
light-blue
o
ra
n
g
e
re
d
lig
h
t-
b
lu
e
lig
h
t-
b
lu
e
R
e
la
y
b
la
c
k
b
la
c
k
VG
PRINTED CIRCUIT BOARD DIGITECH 2 - SM30003
COD. 40-00016
N
L
M11
light-blue
brown
M11
Legend
IG:
Main Switch
TS:
Safety thermostat
TF:
Thermo Fuse 102°C
SR:
Heating sensor
EV:
Fan
ER:
Ionisation electrode
EA:
Ignition electrode
TRA: Ignition transformer
VG:
Gas Valve
SL: Switched live from external
control 240V connection
( i.e. room Thermostat, Programmer )
PN:
System pump neutral
PL: Pump live
PACQ : Water pressure switch
b
ro
w
n
lig
h
t-
b
lu
e
Pacq
M7
1
2