|
Re: carbon build up at draft hood - furnace
The markings tell a story of impaired performance that should be followed up as Davidr posted. They also warrant a closer inspection of the heat exchanger, burners, orifices, manifold and inlet gas pressures, primary aeration, etc. I disagree that in a non-luminous flame burner, you should not be getting soot. If you enlarge those pics, it appears there may be a crack along the top of the HX. Regardless, these components are made of materials that have a corrosion resistance suitable for the class of service. If you are getting corrosion here, it is probably an indicator of excessive condensation. Even if this unit tests up ok, its long term durability is certainly in question. In such cases, I'm not shy at all about sending pics to the mfr. for written comment. While they may not have sufficient information to comment fully on this, they can comment on the warranty, durability, replacement parts, etc.
Full inspection combustion analysis and Worst Case Depressurization testing are in order.
Bob
__________________
disgusted with some people on this forum. Out of here!
|