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So I’ve had some other posts about replacing my boiler and adding a zone but I wanted to take a step back to what started this journey and pick the collective brain here again:
Back in early part of this year my pipes started thundering like crazy, went down and saw my cg7 WM boiler water temp was pushing 250. Long story short, the boiler heats the house up but when you turn it on the water temp keeps rising, it just won’t stop. I shut her down, it cools down, turn her back on, just keeps right on rising again and in a few hours back pushing 250 and need to cut power off again.
Is this the aquastat? The relay? Something else? Thanks in advance for your thoughts!