I have a single AC damper that is fail-close, but was wired as always powered open by the people who put the AC unit into my house before I bought it. This would be fine, except I live near a meat packing plant, and sometimes the air outside stinks. I want to be able to close and open the damper based on various criteria I get from home assistant. (air quality, direction, speed, etc)
And the multimeter says the output power for the damper (which is powered by my AC unit) outputs 30V AC power.
I was able to power the shelly device by just plugging it into the AC power with Red to Red, and Black to Black. However, it turns out the Shelly device does not send that power out through its two switchable outputs. Those are called “dry circuits” apparently.
So my goal is to power the shelly device, the ac damper device, and have the shelly device ALSO switch the damper on and off. I know it’s possible, I just don’t know how.
So, the above diagram is my attempt to wire the shelly device into the setup. However, whenever I power the relay in the shelly device, the shelly device fries itself. So I’m looking for where I went wrong, and how to make it all work.
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Alright.
Give me a bit. I posted wrong, but it’s being written up now.
Posted wrong, here’s my whole story:
I have a single AC damper that is fail-close, but was wired as always powered open by the people who put the AC unit into my house before I bought it. This would be fine, except I live near a meat packing plant, and sometimes the air outside stinks. I want to be able to close and open the damper based on various criteria I get from home assistant. (air quality, direction, speed, etc)
This is the AC damper unit: https://www.resideo.com/us/en/pro/products/air/forced-air-zoning/replacement-actuators/replacement-motor-for-eard-ventilation-damper-m847d-vent-u/
This is the shelly plus uni im trying to use: https://us.shelly.com/products/shelly-plus-uni
And the multimeter says the output power for the damper (which is powered by my AC unit) outputs 30V AC power.
I was able to power the shelly device by just plugging it into the AC power with Red to Red, and Black to Black. However, it turns out the Shelly device does not send that power out through its two switchable outputs. Those are called “dry circuits” apparently.
So my goal is to power the shelly device, the ac damper device, and have the shelly device ALSO switch the damper on and off. I know it’s possible, I just don’t know how.
So, the above diagram is my attempt to wire the shelly device into the setup. However, whenever I power the relay in the shelly device, the shelly device fries itself. So I’m looking for where I went wrong, and how to make it all work.