Hardwired vents, Better control?

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Brian Wuttke
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I have hardwired (no batteries) a couple of my vents.  Does the Flair system know that these are hardwired rather than using batteries?  

Reason I ask was because months ago (prior to hardwiring) Flair support mentioned something about the vent not operating too often as to help save on battery.  If the vents are hardwired then they don't need battery saving options.  Does the system treat the hardwired vents differently than the battery ones?  If not then this should be built into the system.  Assuming the Flair system can tell the difference between the hardwired vents and the battery vents.

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    Steve Rossi

    I asked this same question to support two months ago. Response was:

     

    "The biggest power advantage to hardwiring a vent to a 24V transformer is less consumption of batteries."

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    James Downing

    I would assume that the vent software is not aware of its power source.  There is likely a small transformer and rectifier inside the vent that converts AC 24v down to the equivalent of the batteries (3.5v).  If you look on the statistics page, the system reports the voltage input to the vents at 3.5v, and not 24v, so I believe the system doesn't know the difference.

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    Brian Wuttke

    James, with that said you figure the vents should know if the power is going through the rectifier or not. If it's using the rectifier then they are hardwired.

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    James Downing

    I would bet that the rectifier and transformer are sensorless and simply feed directly into the board power and ground bus.  Whether the bus is getting power from the battery or rectifier, it probably has no clue.

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