Unigas HTP90A, Installation, User'S, And Maintenance Manual, Page: 23 / 60

C.I.B. UNIGAS - M039219CA
23
Electrical wiring diagram for burners with no printed circuit provided
If the burner is ordered without printed circuit, follow the next connections diagrams.
Rotation of fan motor
Once the electrical connection of the burner is executed, remember to check the rotation of the fan motor. The motor should rotate
according to the indication on the body. In the event of wrong rotation, reverse the three-phase supply and check again the rotation of
the motor.
NOTE:
(
except for motors with “star-delta” start up
):
burners are supplied for three-phase 400V supply, and in the case of
three-phase 230V supply it is necessary to modify the electrical connections into the terminal box of the electric motor and
replace the overload tripped relay.
Fig. 22 - Progressive burners
Fig. 23 - Probes connection
Fig. 24 - Fully modulating burners
Probes connection by means of the 7-pins plug (Fig. 25) -
see Fig. 23 for connections.
Fig. 25