I'm considering how I would power my boiler to keep the house warm if our electical power was out for an extended period. My thought is to use a generator. Yes, I would isolate the boiler electronics from the house power for safety. My question is: Is generator power clean enough to not damage anything in the boiler controls. This is an older, standard efficiency boiler with a standing pilot. Are there any control boards to be concerned about?
What is the typical arrangement for powering a boiler when the electricity fails?