MR E30
Well-known member
That’s huge. Made up my mind for me, Condensation was always our worst enemy when camping in our TT with single digit ambients using propane furnace. Only way to remedy was to open roof vent and turn on fan. Quickly got cold again and remoistened in no time. Plus it burned a lot of fuel. Imagine the diesel heater is more efficient than propane. Thought it may be better to mount it on the inside, so it’s not exposed to elements, rust, corrosion, and just run a fuel line to an outside fuel tank, but IDK. Never installed one B4. Also thinking with 50 amp Orion, a 5 hour drive yields 3,000wh of charging.
Have you posted any photos?
Dave linked my build thread above for reference, if you care to check it out.
Diesel is way more effective for sure. One gallon of diesel currently lasts ~20 hours set on low. Outside air temp in the 40's, thermostat set to 75 in the camper. Periodically run it on high for a while to help keep the unit in good shape. I was able to get the camper to ~120 degrees when it was 35 degrees outside. Incredibly effective.
Yes, mounting the unit inside would be the way to go. I did not incorporate a diesel heater into my original layout/build, as I thought LPG would suffice, so I had no interior space to mount the unit. I don't routinely camp in the cold (I try not to at least, hard to truly escape it in the winter), so the compromise worked for me.
Driving for 5 hours certainly dumps a bunch of charge into the batteries, but I personally don't drive that far in one go, basically ever. So a stout solar setup was my area of focus. Also, my charge controller touts itself as a 50a model, but it will only do 500w maximum (~37a). Also, the moment any tiny bit of sun (I'm talking predawn haze that registers at .1a) hits the panels the charger automatically limits alternator input to 25a. Not sure if the Orion unit has that limitation as well. Just another thing to consider.