15
ELECTRICAL CONNECTIONS
To execute the electrical connections, proceed as follows:
find the pulg or the plugs, according to the model, that comes out from the burnrer:
7 pins plug for the power supply (for all models);
4 pins plug (double-stage burners);
Connectors identification
Respect the basic safety rules. make sure of the connection to the earthing system. do not reverse the phase and
neutral connections. fit a differential thermal magnet switch adequate for connection to the mains.
ATTENTION: before executing the electrical connections, pay attention to turn the plant’s switch to OFF and be
sure that the burner’s main switch is in 0 position (OFF) too. Read carefully the chapter “WARNINGS”, and the
“Electrical connections” section.
WARNING: if the cable that connects the thermostats and the control box should be longer than 3 meters, insert a
sectioning relay following the attached electrical wiring diagram.
Burner power supply connector
HIGH/LOW flame connector
Single stage burner connector
Double-stage burner connectors
7-pins connector
7-pins and 4-pins connectors
Key
C1
LOW FLAME TIME METER
C2
HIGH FLAME TIME METER
FU1
FAN MOTOR LINE FUSE
FU3
LINE FUSE
IL
BURNER LINE SWITCH
IM
FAN MOTOR LINE SWITCH
KM1
FAN MOTOR CONTACTOR
LAF
BURNER IN HIGH FLAME INDICATOR LIGHT
LB
INDICATOR LIGHT FOR BURNER LOCK-OUT
LBF
BURNER IN LOW FLAME SIGNALLING LAMP
MV
FAN MOTOR
ST
THERMOSTATS O PRESSURE SWITCHES SERIE
TAB
HIGH LOW FLAME THERMOSTAT/PRESSURE SWITCH
TS
SAFETY THERMOSTAT/PRESSURE SWITCH
CONN-MOTORE FAN MOTOR CONNECTOR
CONN-LINEA BURNER POWER SUPPLY CONNNECTOR
CONN-TAB HIGH-LOW FLAME CONNECTOR
($)
IF "TAB" USED REMOVE THE BRIDGE BETWEEN TERMINALS
T6-T8
WARNING: the burner is fitted with a bridge between terminals T6 and T8 on CN2-TAB connector (external side link,
male connector); remove this bridge before thermostat connection.
