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      01-11-2022, 12:25 PM   #19
BMWGUYinCO
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Drives: 22 M850 Convertible '23 X3 M40
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Quote:
Originally Posted by lakefront View Post
Sounds like you installed a current sensing relay on one of the fan wires. This insures the humidifier is only powered when the fan is running. Once the fan starts, the humidistat senses whether to open the water valve on the humidifier. As long as you have the relay on the "heating" speed, this should work fine. You don't want it running when the fan is on "circ" mode (what you are calling Stage 1). Only when the furnace is running.
Not quite. I installed a current sensing relay on the furnace live wire, not the fan live wire (those are two separate things).

This ensures the humidifier is only running when the furnace is on.

The fan operates 24/7/365 in stage 1 (low level speed), ensuring air circulation and more balanced temps across all 3 finished levels of our home.

When the furnace kicks on, then so does the humidifier and the fan then kicks into stage 2 (higher fan speed). When furnace shuts off, so does the humidifier, and the fan returns to stage 1 low level fan speed, but it is running continuously. So the fan, regardless of stage 1 or 2, runs independently of the humidifier.

Last edited by BMWGUYinCO; 01-11-2022 at 12:31 PM..
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