Are residential hydronic boilers required to be ASME H stamped ?
Are residential hydronic boilers required to be ASME H stamped ?
(OP)
Can anyone tell me if a hydronic boiler, if used in a private residence is required to be ASME H stamped if it is used on an open vented system i.e. atmospheric pressure ? Or are there exemptions ??





RE: Are residential hydronic boilers required to be ASME H stamped ?
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