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Re: thermal expansion/ closed water system
A condo building will typically have a closed water system, which requires a 'pressure relief device', which could be just a 'pressure relief valve', which, of course, brings up the question as to 'where in tarnation are you going to dump the pressure relief discharge to? Unless there is a pan under the water heater, and the water heater will not be setting in water, and ... and ...
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