It’s extremely common for the mechanism that only allows the fuel to be turned on if the pilot is lit to work by having a thermocouple in the pilot flame. Some of these also power the controls (thermostat, for example) and some don’t.
It’s extremely common for the mechanism that only allows the fuel to be turned on if the pilot is lit to work by having a thermocouple in the pilot flame. Some of these also power the controls (thermostat, for example) and some don’t.
Yeah blowing yourself up with a gas leak is common enough when you're working on these systems that it's pretty important to have an interlock there.