57
EN
5.11 Wiring diagram
BROWN
BLUE
BLUE
BROWN
NL
CD .6324916
TRA
X3 X2
X22
X6
X9
X4
X10
X11
X21
X16
F
X5A
X19
EAR
BROWN
BLUE
V
RED
GREEN
WHITE
IN
GND
VCC
RED
RED
RED
RED
ORANGE
RED
BLUE
BLACK
BLUE
BLACK
BLACK
BLACK
BLACK
BLACK
BLUE
BLACK
BLACK
BLUE
BLUE
3 4
1
2
SE
TA
CR
X22
ORANGE
GREEN
VIOLET
BLUE
BLACK
BLUE
6 5 4
1 2 3
VD
L
Line
N
Neutral
F
Fuse (3.15AT - 250V)
TRA
Ignition transformer
PI
System pump
V
Fan
EAR
Ignition / Detection electrode
EV
Gas solenoid valve
SS
Domestic hot water sensor
SM
Delivery sensor
TS
Safety thermostat
PSF
Flue gas pressure switch
FLM
Flow meter
VD
Diverter valve
PA
Water pressure switch
TA
Air thermostat
SE
External sensor
CR
Remote control (instead of
room thermostat)
To connect the "Air Thermostat" or, alternatively the "Remote Control", remove the bridge between terminals
1-2.
Fig. 21
m
CAUTION
Users must:
– Use an omnipolar cut-off switch, disconnect switch
in compliance with EN Standards
which ensures
complete cut-off in overvoltage category III conditions
(i.e. where there is at least 3 mm between the open
contacts)
.
– Respect the connections L (Live) - N (Neutral).
– Ensure that the special power cable is only replaced
with a cable ordered as a spare part and connected
by professionally qualified personnel.
m
CAUTION
Users must:
– Connect the earth wire to an effective earthing
system. The manufacturer is not responsible for any
damage caused by failure to earth the appliance or
failure to observe the information provided in the
wiring diagrams.
d
IT IS FORBIDDEN
To use water pipes for earthing the appliance.