70
EN
5.14 Wiring diagram
5.14.1 Thermal unit
FU
L
N
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
IG
KA
1
5
2
4 3
C
C
2
1
C
E
E
I
I
C
2
1
2
C
C
NA
NA
NC
NC
C
1
1
2
3
5
TM
TR
TL
E/I
SPAC
TS
PAC
NC
NO
BR
BK
R
BR or GR
R
BL
BR
BK
COM
PB
SA
N
L
230V-50Hz
SBB
PI
VP
1
L1
2
N
T1
T2
S3
B4
3
4
5
BR
CTP
TA
BR
Burner
CTP
Programmer timer-controlled
thermostat
E/I
Summer/winter switch
FU
Fuse (2,5AT - 250V)
IG
Main switch
L
Line
N
Neutral
PAC
Water pressure switch
PB
Calorifier pump (high-efficien-
cy)
PI
System pump (high-efficiency)
KA
Relè
SA
Voltage indicator light
SBB
Burner lock-out indicator light
SPAC
Water pressure switch activa-
tion indicator light
TA
Room thermostat
TR
Heating thermostat
TS
Safety thermostat
TMIN
Minimum-temperature ther-
mostat
TL
Temperature-limit thermostat
VP
Pressostatic valve
BL
Blue
BR
Brown
BK
Black
GR
Grey
R
Red
–
To connect the room thermostat (TA), remove the jumper between terminals 17-18.
–
To connect the programmer timer-controlled thermostat (CTP), remove the jumper between terminals 15-16.
–
The programmer timer-controlled thermostat must be wired in conformity to the electrical safety regulations in the country
where the appliance is used.
Fig. 26
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 sys-
tem.
The manufacturer is not responsible for any dam-
age caused by failure to earth the appliance or failure
to observe the information provided in the wiring dia-
grams
.
d
IT IS FORBIDDEN
To use water pipes for earthing the appliance.
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