A wiring diagram is a simplified traditional pictorial representation of an electric circuit.
Gas fireplace switch wiring.
On the gas fireplaces i have installed the on off switch was a millivolt contact.
Slide the spade connectors onto the spade terminals on the back of the switch in the control panel or connect them directly to the pigtail wires if installed.
If the fireplace is a 120v control then in most cases you will need a neutral.
When attempting to automate a fireplace with a smart switch you have a problem because a lot of switches require a neutral wire to be connected so they have constant power for the zwave radios to send and receive signals.
The thermopile in your fireplace puts out millivolts nothing near the 120v the light switch was designed for.
All the switch is doing is making or breaking a connection it is not wired up to standard 110 volts.
A generic low voltage switch from a electronics store or ripped out of a toy would probably do it for example a 12v spst.
It shows the parts of the circuit as streamlined shapes and also the power and signal links in between the devices.
It s probably just a matter of finding a switch with a low enough on resistance.
Assortment of gas fireplace wiring diagram.