Originally Posted by dbj216
Today I tested the fridge on gas power. After about an hour I heard a loud bang in the direction of the trailer. There was no smoke or damage. The interior cabinet above the fridge where the plastic "chimney" runs does smell hot. I kinda figured it was the new fridge outgassing manufacturing oils and the like. My new furnace smells hot too. The flue pipe does seem warmer on gas than electric.
Has anyone ever experienced a flue or chimney bang while running a Dometic fridge on gas? Is it possible for the fridge to allow gas into the burner but fail to ignite it?
The 2510 uses a constant flame ignition system, with the flame going from high to low to modulate the temperature. The gas flame never shuts off and is not re ignited except when there is a total flame failure, then the electronic ignitor re starts the gas. The thing is there is very little reason for the flame to fail once it is lit initially, unless it is blown out and your unit was not moving I assume, just sitting there. If it goes out and does not re ignite in a short time the flame sensor simply shuts the gas off and it cannot re ignite without pressing the interior button to re start the entire sequence.
I cannot see how that system, which does not turn the flame on and off, could cause the problem, unless somehow you had a loose gas fitting, leaking some gas somewhere. A leak could of course be ignited causing a "bang". The only other possibility that comes to mind is a flame failure due to gas tank switchover, then gas being re available within a few seconds and the ignitor causing the excess to ignite causing a bang or pop. This would be quite a stretch though.
I would watch it very carefully to be sure there is no re occurrence. It will run hotter (the plastic chimney) on gas than electric, but probably not enough to make any difference in real operation.
If you have the original hole in the floor and vent on the roof system, you probably do not even need the fan(s) you added.
I put a 2510 in my 74 Argosy, works very well.