I just finished installing my Harman P35i pellet insert and fired it up this morning. I installed it myself, took my time, and followed all the instructions exactly. The stove works great and my entire downstairs warmed up within an few hours of lighting it. The only thing is, I am experienceing a low frequency rumbling noise every so often. It almost sounds like when a car drives by your house with the giant subwoofer in the trunk. It can get quite loud at times. It seems to be being caused by the exhaust blower. I think it's the chimney liner vibrating, almost like when you blow across the top of a beer bottle, but I am not sure. I used a 4" 316Ti Stainless Steel Chimney Liner and ran it to the top of the chimney, then capped it with a terracotta flue cap with a roof and a round opening and band collar connection. I also used the lintel kit which secures the inserts frame into the fireplace opening by tightening some threaded rods against the lintel bar at the top of the fireplace opening.
Is rumbling a known or common problem with chimney liners? Any other ideas on what this noise could be? If it is the liner, any ideas on how I might correct it?
Thanks for any suggestions.
Is rumbling a known or common problem with chimney liners? Any other ideas on what this noise could be? If it is the liner, any ideas on how I might correct it?
Thanks for any suggestions.