Thanks for your input Gerald.
to clarify the odor, it is an exhaust odor from the Aqua Hot. I have inspected the exhaust fittings and pipe and there is no sign of a leak. The cover to the Aqua Hot was removed and when the Burner was running, there was a definite odor coming from the 9:00 to 12:00 o'clock position of the burner. There is, as it appears in my opinion, staining from an exhaust leak around this same position, but the staining does not wipe away as soot would, but is a black stain non the less. The Aqua Hot was serviced last year in Chandler, and I brought this stain marking to the attention of the tech because it looks like a leak from the fuel being burned and he just dismissed it. I do believe there is a leak at the burner in the described 9 to 12 o'clock position. So my interest is, is there a seal between the burner/motor and the chamber to which it mounts. I have looked at a parts breakdown and what I found was a Plate Manifold, could this serve as a seal. Any knowledge would be appreciated.
