Posted by Harold Kestenholz - Hydronic Network on January 04, 2000 at 11:08:29:
In Reply to: Boiler in Off Mode posted by Ted on January 04, 2000 at 08:48:28:
Yes, as straight runs of pipe expand and contract they can slide next to structural members and thud when the force overcomes the friction. Search through the house for pipes up against members and loose in fixed hangars.
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