PART III: INSTALLATION
24
Rotation of electric motor
Once the electrical connection of the burner is executed, remember to check the rotation of the electrical motor (pump motor if any, and
fan motor) . The motor should rotate according to the “arrow” symbol on the body. In the event of wrong rotation, change 2 of the 3 pha-
ses of the three-phase power cable and check again the rotation of the motor.
NOTE: In the case of standard burners, see the connection of probes / modulation signals on the following page. In any
case, the wiring diagram attached to this manual always applies.
ATTENTION:
the burners are supplied for three-phase 380/400/415/480 V supply, and in the case of three-phase 220/
230/240 V supply it is necessary to modify the electrical connections into the terminal box of the electric motor and replace
the overload tripped relay.
ATTENTION: check the calibration of the thermal relay sensor (+5% ÷ +10% rated value).
DANGER! Incorrect motor rotation can seriously damage property and injure people.
After completing the electrical connection of the burner, remember to check the rotation of the
electric motor of both the pump (if present) and the fan. The motor must rotate in the direction
indicated on the housing. In case of incorrect rotation, reverse the connection of 2 of the 3
phases of the 3-phase power supply cable and re-check the motor rotation.
Summary of Contents for C70N US
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