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I can only get hot water when i turn the heating on! the boiler is a sime super 90 plus (so it says on the front). i have turned all the radiators in the house off, am i causing damage doing this?

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  • 308 Answers

It sounds like you have a bad aquastat, if you have steam heat, and you have closed off the radiators, it will not cause a problem, it will just shut off when you build a couple psi of pressure. I would not recommend the same on a hot water boiler, because it could cause problems if you start making steam. Hope this helps.

Posted on Jun 17, 2009

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