| Thanks Luana for the explanation of a powerpile vs. a thermocoupling. Now I know why the new Honeywell 'powerpile' cost so much!
If there's no pressure sensor in my system, can you explain why it would kick on out of the blue with a lot more pressure than the 12 psi indicated in the owner's manual, heat up the water to the point where you couldn't touch the pipe & then cut out completely (including the pilot) when the water pressure valve released? That's the one mystery in all this. Like I said, everything seems fine now & the boiler is firing up & shutting down as it's s'posed to do. Thanks DAS |