The flow through an orifice is a product of the partial DiffEQ of the delta
between the internal pressure of the tank and the external pressure of the
atmosphere. Or something like that. So if you go up in altitude, the
pressure outside decreases, the pressure inside stays the same. The delta
gets larger, hence the flow gets stronger. That is why Dometic reccommends a
smaller orifice, to cut down the flow of Propane. I thinks you might be
blowing the flame out with too muvh gas. Your system would probably work
better if it was sooted up. If you can find a smaller orifice gas nozzel,
try it.

tim o'brien

>Thanks to David Beierl's tips on sealing everything with silicone I was
>able
>to keep my refrigerator lit while driving around here in Albuquerque (elev.
>5000'). But when we took a short trip west to the mountains south of
>Grants,
>NM (elev. approx 6200') the fridge was going out and I was having a problem
>restarting it. I had cleaned and blown out and sealed everything I could
>per
>David's advice and topped up the propane tank too before we left. Although
>Dometic suggests a smaller jet for high altitudes mine didn't seem sooted
>up
>and actually seems not to get enough propane even on the highest thermostat
>setting.
>Have any others had this problem? Is there any way to increase propane
>output?
>
>
>Ken Hunter
>82 Westy 1.9D
>84 Jetta 1.5D
>89 Mitsubishi van
>

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