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Training manual ALTEAS & GENUS ONE
6.2
MODUALTING SPEED VENTILATOR
The fan has the dual purpose of expelling the fumes produced by the combustion and ensuring a consistent
flow of excess air throughout the entire modulation range, from the maximum to the minimum heat output.
As soon as heat is requested the ventilator is piloted by the electronic card if required on ignition speed.
The tachymeter of the ventilator detects the right speed the gas valve is supplied. When the flame is
detected by the detecting electrode the ventilator if free to modulate according to the thermal load requested
by the boiler. The burner power is directly proportional to the speed of the ventilator.
The HALL sensor, to detect the fan speed, is integrated inside the motor.
It is possible to display the ventilator rpm measured by means of the parameter
1
Page. 56 of 88
Power
12 KW
18 KW
EBM NRG 118/0800-3612 - 365Vdc
24 KW
FIME PX 118 006 03 - 365Vdc
30 KW
35 KW
8
1
Fan
2
Mixer
2
Fan
22.
CAPTION
Version 2V2.
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