I have a propane powered vent free fireplace in my garage. It doesn’t get plugged in anywhere and it doesn’t take batteries. I get how the peizo works to start it but how the hell does it turn the gas valve on and off by itself? When I go from pilot light to on there is a delay to when you actually hear the gas start flowing. Then it will also click and just shut itself off sometimes.
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It’s hard to know without knowing the exact model, but it’s likely got a thermal switch.
You may be aware of a thermal couple, a type of temperature sensing equipment that creates a small voltage when it’s heated.
Thing is, if you pack enough thermal couples together into a bundle and serialise their output you can achieve a high enough voltage to do things like actuate a valve.
There’s probably an electric valve actuated by a thermal switch that’s heated by the pilot flame.
It’s hard to know without knowing the exact model, but it’s likely got a thermal switch.
You may be aware of a thermal couple, a type of temperature sensing equipment that creates a small voltage when it’s heated.
Thing is, if you pack enough thermal couples together into a bundle and serialise their output you can achieve a high enough voltage to do things like actuate a valve.
There’s probably an electric valve actuated by a thermal switch that’s heated by the pilot flame.
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