Hey Ed, How Does an Electronic Thermostat Work?
In This Edition of “Hey Ed,” Ed Discusses How an Electronic Thermostat Works
Hey Ed, how does an electronic thermostat work? A lot better than the thermostats of the days of yore. I think that's a good way to sum it up. Back in the day, we used mercury bulb thermostats; as the name implies, it was a bulb or a glass bulb with mercury in it. It had a couple of wires hanging in the bulb and a bimetal disc with two dissimilar metals fused together. They react differently to temperature, and it moves when it gets warm or cold, which would make and break those two contact points inside that bowl. A good product but something that we would use in the past. An electronic thermostat is going to use a much more reliable set of electronic contacts that are going to open and close based off of the signal or the mechanics of that electronic thermostat to cycle the equipment on and off. The modern thermostats are a much more reliable, much more dependable product, and that's the way I see it.
In This Edition of “Hey Ed,” Ed Discusses How an Electronic Thermostat Works
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Ed Janowiak is the Manager of HVAC Design Education at ACCA.
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Posted In: Hey Ed, Technical Tips