19
Electrical connections diagram
Remove the cover of the electrical board mounted on the burner.
Execute the electrical connections to the power supply terminal board as shown here following, check the direction of the fan
motor and the pump motor - see note at the end of page and refit the cover of the electrical board.
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 ADE-
QUATE FOR CONNECTION TO THE MAINS. STRICTLY OBSERVE THE DATA PLATE.
WARNING: The burner is provided with a jumper between terminals 6 and 7; in the event of connecting the high/low
flame thermostat remove this jumper before connecting the thermostat.
IMPORTANT: while connecting electric supply wires to burner’s teminal block be sure that ground wire should be
longer than phase and neutral ones.
Progressive burners
Fig. 16
Probes connection
Fig. 17
Fan motor and pump motor rotation
Once the electrical connection of the burner is executed, remem-
ber to check the rotation of the motor. The motor should rotate
according to the direction shown by the “Arrow” attache to the
body. In the event of wrong rotation, reverse the three-phase sup-
ply and check again the rotation of the motor.
NOTE (except for motors with “star-delta” start up
)
:
Burners
are provided for three-phase 400 V supply, and in the case of
three-phase 230 V supply it is necessary to modify the electrical
connections inside the terminal box of the electric motor and
replace the thermal cutout relay.
Fully-modulating burners
Fig. 18
Probes connection by means of the 7-pins plug (Fig. 19) - see
Fig. 17 and the ELECTRIC WIRING DIAGRAMS for connec-
tions.
Fig. 19
