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EF: Fire Damper Actuators

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EF: Fire Damper Actuators

I

IAmSparkytus!

Fire Damper Actuators

Hello

Working on a site with dampers fitted on the ducting which need fire shut offs connected to the fire panel via an actuator.

The actuators have 4 contacts “Damper Closed NO and NC” and “Damper Open NO and NC”.

Presuming they need a NC contact so the actuator operates and closes the damper when the alarm goes off but not sure which NC contact to utilise.

Any insight appreciated.

Thanks.

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