WIRING DIAGRAMS
EM 16/M-E
The connections to be carried out by the installer are:
- Main supply line
- Thermostatic line
- Lock-out lamp at terminal S3 (if present)
- Hour counter at terminal B4 (if present)
- Flame modulation thermostat at terminals 1-3 of 3-pole plug (if present) (remove the bridge)
EC
Control electrode
F
Fuse
FA
Anti-interference filter
IG
Main switch
MB Burner motor
MS
Servocontrol terminal
board
MPE Control box terminal board
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 ope-
ning of at least 3 mm between the contacts
- Must be workmanlike performed and comply with the regulations in force.
PA
Air pressure switch
PGm Minimum gas pressure
switch
TC
Boiler thermostat
Tmf 2
stage modulation
nd
thermostat (if present)
TR
Ignition transformer
TS
Safety thermostat
37
Mains supply
230V-50Hz
VP
Main safety valve
VS
2
safety valve
nd
MRM Continuos modulation
terminal board
(if present)
S
Probe (if present)
M
UK