Eli5 How can one small flame in a boiler be enough to warm a whole houses central heating system?

Question

Eli5 How can one small flame in a boiler be enough to warm a whole houses central heating system?

In: Engineering

Answer 1

The pilot light which is always burning is a small flame. But when the boiler is on and heating that pilot light ignites lines of burners (like it does in a gas oven) that are used to heat the boiler. When the boiler turns off gas supply to those burners turns off and they go out but the pilot stays it.