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Ventilation system
C.
B.
A.
Fig. 11 - Ventilation system diagram.
A. Electrical motor, B. Centrifugal fan, C. Sleeve.
The electrical motor on the burner box turns a centrifugal fan found inside the burner box. Air is moved by the
centrifugal fan and, thanks to the particular shape of the box, it picks up speed until it reaches the burner
sleeve. At this point, the air passes through the flame disc and reaches the nozzle where it mixes with the
fuel exiting the nozzle outlet. After combustion, the air flow expands, slowing down. The air therefore lightly
touches the internal walls of the combustion chamber and then reaches the outside through the front baffle at
a speed that is almost null.
Motor
Figure 12 - Single phase electrical motor.
The motor is 2 pole single phase. It is air cooled thanks to fins on the motor block. It has two drives, one
powering the fuel pump, the other rotating the internal fan of the burner box. The drive power for both heaters
is 90 W.
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