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Posted by HeatPro on December 14, 2008 at 15:28:27:
In Reply to: Weil Mclein Gold cgs gas boiler seems too noisy posted by deanna on December 14, 2008 at 11:16:31:
There is no standard combustion air installation to the roof in installation manuals; it is an option that is rarely used.
Whoomfs are not a good sign. There is something wrong in a combustion setup when a boiler makes a whoompf. Further tuning with pressure reading instruments is necessary.