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Attic Fan Control via Z-wave

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    Attic Fan Control via Z-wave

    I have a switch in the hall that controls an attic fan but without a neutral. So I figured to put the z-wave controller where the fan wiring connects to the house wiring by the fan.

    The motor is quite small, just under three inches in diameter and 5 inches long. I have no idea of the draw.

    What are the consequences if I use for example a Qubino Flush Relay? I guess there can be operational issues because being a motor it's induction instead of resistance.

    Any thoughts appreciated.

    #2
    If you are using a relay (not a dimmer) you do not have to worry if the load is resistive or inductive.

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      #3
      You need to determine the startup amperage of that motor. The max on that relay is 10A, as I recall. What about using the Qubino to control a HD relay that in turn controls the fan?
      .

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        #4
        That seems like a reasonable way to do it. A relay should be just fine for a motor. A relay is really just a switch. Where you can get in trouble is if you try to use a light dimmer with a fan. Actually, if you look at Qubino's website, they even show a ceiling fan as one application for the relay.

        https://qubino.com/products/flush-1-relay/

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          #5
          For a fan that is not easily accessible, I put a relay between the fan and a Z-Wave switch/relay.
          We know HS is 100% reliable but still, if I ever need to do anything with the Z-Wave switch, I would not want to climb to the roof.
          I think I paid like $10 for a 25A relay on Amazon.

          I have another fan (5-6 amps) that's been driven by an old Aeotec PlugIn module for several years.

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            #6
            Thanks everyone, yes it is a relay not a dimmer. Strictly ON/OFF. The fan and wiring are easily accessible in the attic, luckily. I already included it with the temp sensor and will install tomorrow.

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