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kwalstad55 asked

Multiplus 24 V 3000 Aux fan wiring

Looking to add blower fan to my 24V 3000. The blower is 12V. Should a 12V power be applied to the relay to have it act as a switch?

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mrhappy answered ·

Yes, as long as the fan is pulling 4 amps or less (48W). If it is pulling more power, then "the relay" in the multiplus could be used to activate a bigger relay which act as the fan switch.

Edit: I assume you are talking about the primary relay (alarm relay)

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kwalstad55 avatar image kwalstad55 commented ·
Thank you mrhappy, I am looking for advice of which relay to use. I want it to turn on & off with the Multiplus fan. The unit I am going to use is a 130 cfm blower 12V 2.5 amps.
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