Community Forums

johngretty11 · 03-09-2016, 11:11 AM

Just purchased a coach with an Oasis heat system. Upon reading the manual it states the diesel usage is the primary way of heating the water and the electrical the secondary usage. My question is when hooked up to shore power is it o.k. to use the electrical as primary and diesel as secondary and thereby saving diesel fuel?

Stealth01 · 03-09-2016, 12:18 PM

Yes, just don't activate the diesel. We typically run electrical elements 1 and 2 with diesel off. If it gets colder OR when showering I'll engage diesel.

**pasdad1** · 03-09-2016, 12:42 PM

Better is to just leave all switches "on" and let the aqua-hot make the decisions. The electrical element WILL keep the boiler hot, and as long as water demands are within reason, the diesel WON'T fire because it doesn't need to. When you require more hot water than the electrical element can keep up with, the diesel WILL kick in just long enough to bring the boiler back up to temperature.

It is to your benefit if the diesel fires occasionally, as it keeps everything working better long term. Not using something mechanical is the quickest way to see it degrade.

Mr_D · 03-10-2016, 12:01 AM

I run ours with one or both elements on, then turn the diesel on for showers or washing. But, having both elements on does require a 50 amp service since each is 2000 watts.

Mr_D · 03-10-2016, 12:23 AM

Quote:

Originally Posted by pasdad1

It is to your benefit if the diesel fires occasionally, as it keeps everything working better long term. Not using something mechanical is the quickest way to see it degrade.

That is also a good point!

MCJones · 03-10-2016, 05:27 AM

I would use the diesel - you will find the Oasis units are very stingy on fuel use and not really an issue. We sit for 3-4 months in FL using it with diesel on all the time and the gauge after 4 months drops maybe an 8th of a tank, hard to tell, it is so small. Two of us, and 150 gal. fuel tank. I say use it don't be afraid of the fuel. jmo mark