WIRING DIAGRAMS EM 40/2- E
The connections to be carried out by the installer are:
- Main supply line
- Thermostat line
- Lock-out warning light (where applicable)
- Hour counter (where applicable)
- Flame modulation thermostat (where applicable) (remove the jumper wire).
EC
A
B
B4
S3
PGm
T2
T1
N
1°
L1
VP
2°
C
D
VS
L1
N
T1
T2
Tmf
S3
B4
Legend
EC
Control electrode
F
Fuse
FA
Anti-interference filter
FCA
Auxiliary circuit fuse
IG
Main switch
IMA
ON/OFF switch
Im.M. Min./Max. switch
NOTE: Always make sure that no more than two wires are connected to each terminal.
Warning:
- Do not invert the neutral with the phase.
- Make the connection to an efficient earthing system.
- The electrical power line to the burner must be fitted with an omnipolar switch with an opening of at least 3 mm between
the contacts.
- The earth connection to the terminal board of the burner must be made with a cable at least 20 mm longer than the phase
and neutral cables.
- Must be workmanlike performed and comply with the local regulations in force.
1
2
2 2 3 4 5 6 7 8
9
10 1112
TR
PA
MB
Im.M.
1
2
3 4 5 6 7 8
N
1
2
3 4 5 6 7 8
MB
Burner motor
MR
Auxiliary terminal board
MS
Servo control terminal board
MPE Control box terminal board
PA
Air pressure switch
PGm Minimum gas pressure switch
TC
Boiler thermostat
MPE
IMA
FCA
TP
1 2 3 4
FA
MR
MS
Tmf
TP
TR
TS
VP
VS
- 35
-
230V/50HZ
TS
IG
F
L1
L1
N
N
1
TC
2
3
Flame modulation thermostat
Timer
Ignition transformer
Safety thermostat
Main safety valve
2nd safety valve