Aquahot exhaust

[jaws19]

I am having a problem with my Aquahot putting out heavy exhaust when I turn on the burner. It will settle out after a while but do it again when it comes back on. Anyone seen this before?

[Matt D]

Time for service. Nozzle, fuel filter and a burner cleaning. If you're handy, this is DIYable with the only specialty tools required being 2 pairs of hose clamp pliers.

Or, you could be seeing this as a result of high altitude operation. In this case, there is a shutter you can open that will admit more air. You need to search online for the details, but as I recall you remove the cover and loosen the inlet collar and rotate.

-Matt

[royals1212]

When was the last time you serviced your unit? I suspect a new fuel filter, nozzle and cleaning will take care of your problem

[DeWat]

Originally Posted by jaws19

I am having a problem with my Aquahot putting out heavy exhaust when I turn on the burner. It will settle out after a while but do it again when it comes back on. Anyone seen this before?

Not seeing the year of your coach, have you had your annual service?

[Arch Hoagland]

Aquahot exhaust reminds me of the time I parked next to a Prevost in Phoenix. Walked by his coach and the sewer hose was nothing but a spring wire, the plastic all melted.

Talked to him later, it was their first trip and the Aquahot exhaust was right next to their sewer hose connection.

[smlranger]

Originally Posted by Arch Hoagland

Aquahot exhaust reminds me of the time I parked next to a Prevost in Phoenix. Walked by his coach and the sewer hose was nothing but a spring wire, the plastic all melted.

Talked to him later, it was their first trip and the Aquahot exhaust was right next to their sewer hose connection.

That happened to me on our first trip out with this coach with Aqua Hot. Saw some soapy water on ground near my wet bay door. Looked closer and saw that the AH exhaust had melted an 18" long hole in my Rhino Flex hose .
I am just glad I saw it before I pulled the handle on the black tank .

Important lesson.....route that hose away from the exhaust.

[Mr_D]

Originally Posted by Arch Hoagland

Aquahot exhaust reminds me of the time I parked next to a Prevost in Phoenix. Walked by his coach and the sewer hose was nothing but a spring wire, the plastic all melted.

Talked to him later, it was their first trip and the Aquahot exhaust was right next to their sewer hose connection.

I can see that happening, although my water hose outlet is closer then the sewer hose outlet I'm still careful.
Right now I'm at a friends house and have very limited 15 amp service so I need to run the generator for air con. My gen exhaust is only a couple inches off the ground so I found some bricks, an enamel pan and a wood block to direct the exhaust up and away. I ran the gen at home and completely burned the grass off for a foot or so away so they do get hot.

[Cruzer]

Originally Posted by Arch Hoagland

Aquahot exhaust reminds me of the time I parked next to a Prevost in Phoenix. Walked by his coach and the sewer hose was nothing but a spring wire, the plastic all melted.

Talked to him later, it was their first trip and the Aquahot exhaust was right next to their sewer hose connection.

His first coach was a Prevost? Well, I guess you have to start somewhere and work your way up.

[Cruzer]

I would caution against changing the air inlet shutter though. It doesn't make much difference at higher altitudes. I checked it with my Fyrite gas analyzer and they seem to work best right where the red line is put on the burner at the factory.

If it runs good after it gets going it may be a sticky fuel solenoid that isn't giving you a clean burner start. Oftentimes they will puff a bit of smoke when the burner stops too. I've rebuilt my burner on my last coach and done the solenoid valve twice in the 8 years I had it so it is possible but I would start with a good cleaning and nozzle replacement first. Make sure the slots in the cast aluminum swirler are not plugged. They tend to get that way.

[jaws19]

Thanks to all for your help. Last service was two years ago, so my guess is that is the problem. Will take care of that when I return from my current trip.

[Gary.Jones]

AquaHot's recommendation is for the unit to be serviced yearly (with new filter, new nozzle, removal of combustion chamber and wire brush clean and inspect for cracks should cost you $150 to $200 per service by a service pro. Can be done by you if you know what to look for in the combustion chamber process for $75 or less

Also, turn on the burner at least every 30 days if the coach is not in use. Turn on the burner for a couple of minutes before shutting it down again which burns off the diesel sitting at the nozzle and most likely to begin to thicken and coagulate.

Gary

[Mr_D]

I paid $200 for a full service (incl parts) at a regional FMCA rally. Took all of 20 min with the tech showing me everything I need to know in the future.

[Arch Hoagland]

Originally Posted by Cruzer

His first coach was a Prevost? Well, I guess you have to start somewhere and work your way up.

Well, everybody suggests buying your last coach first. They were from L.A. and very nice people.

[rlwhite]

We have an 2017 Aspire 44B, has anyone had their carbon monoxide detector alarm go off due to the Aquahot running. We've had this happen a few different times when running the heat, normally after midnight ( what a wake up call).