At 11:26 PM 7/11/2012, Gab and Em wrote:
>So, which is the strongest mode for the fridge:  AC, DC or propane?

I reckon the strongest mode is sitting still, dead level.*  Seriously.

AC and DC both use 85-watt nominal heaters, inserted into tubes stuck
onto the outside of the boiler.  The DC one because of its low
voltage is much more sensitive to voltage drops in the supply circuitry.

The fire goes up through the middle of the boiler which may be better
for heat transfer.  The flame IIRC is rated ~650 BTU/hr, but a good
deal of that goes up the flue.

In theory they should be about the same -- Dometic got to choose any
size burner and heater they wanted when they built the thing, so if
they did their work well it should work equally well from any
source.  But in practice it's harder to keep the DC working up to snuff.

*Just in case you don't have the manual - the fridge is rated for +/-
6* in either direction while standing still.  Exceeding those angles
will cause progressive caking of the ?sodium sulfide? anticorrosion
agent inside the boiler which will progressively damage and ruin the
cooling operation.  Operation underway is not limited because of the
same sloshing effect that reduces operating efficiency.

Yrs,
d