The issue with altitude is that the fuel metering on the furnace is very basic. The amount of fuel delivered is dependant on the fuel pump and so a fuel pump which works in the highly oxygenated lowland air, delivers too much fuel above 2000m or so where the air is thinner. Eberspacher manufactures a high altitude dosing pump which should replace the regular pump if you plan on remaining at high altitude for extended periods. Provided the pump is accessible it is very easy job.
I have an eberspacher D2 air heater which works excellently. I now have a webasto water heater which I intend to fit in the coming months to add water heating and redundancy to the heating.
|