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Fire / Smoke Damper 4040
This is a double purpose fire damper.
It has two electronic fusible links – one for 72°C degrees and the other for 175°C degrees.
First it will close at receiving signal by the control board or when the ambient temperature reaches 72°C.
This will be the the fire spread prevention mode.
It will reopen at 175°C degrees and remain open for the purpose of smoke removal.
At this point, it cannot be activated again.
It is twin cable wired by fire resistant cables to both the normal and emergency power supply sources.
The damper is supplied with a unique Belimo motor tested to function at the requested temperatures.
It is being used in double purpose (smoke removal or daily ventilation) ducts.