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12-04-2007, 14:14

Well, I do not know about the new coaches, they have far to mann----nny gadgets.
I will tell you about my hydronic system.
The recirculation pump will run forever if I do not turn the system switch off.
In my case it is a single on/off switch temperature controlled by a single
thermostat in the galley.
However, the principle of radiant heat, or hydronic heat requires continuous
hot water movement. If the water does not move there is no heat. If the
circulation of heated water ceases you get cold in cold weather.
There is an over temp sensor in the burner that will shut it down when a
specified water temp is attained. It you think about it , it is similar to
turning your A/C off in summer as opposed to setting it at 80. It takes a lot
longer to cool a hot house that to cool a stable house. In my opinion continuous
circulation of hot water, there is about 150lf of it in a bus , the heat therein
being dissipated by heat exchangers(convections fans) is what provides stable
heat in the bus. It the water is not moving you get to start all over again.
Stagnant water will not heat anything.
Warning, sometimes I can be radical in opinion. My Wabasto works well when it
works, and that is most of the time.. Right now I think I have an air lock,
something I need to address this weekend. Not normal. Me either. lol

Leroy Eckert
1990 WB-40 Smoke N Mirrors
Dehlonega, GA
Royale Conversion

Ross MacKillop wrote: Hi,
With your experience with Aquahot. I'm a newbi.
When dry camping -Start aquihot with both thermoststs and hot water calling
for heat. Burner runs as does recirc. pump. The burner may cycle on and off.
After a time the Therms are satisfied as is the hot water. IMy recirc pump keeps
running, Shouldn't it shut off until the therms or WH calls?

2nd question-- When on the road- engine hot- my burner comes on- I think
it should not as the engine coolant should be sufficient. The manual says that
the recirc pump will run until the retained engine heat is depleted. I think
there may be another recirc pump from the engine for this purpose.

2006 450 LXi
Ross macKillop

----- Original Message ----
From: p_a_lazar
To: WanderlodgeForum@yahoogroups.com
Sent: Tuesday, December 4, 2007 5:42:29 PM
Subject: [WanderlodgeForum] Aqua Hot fuel consumption (was Re: dry camping)

Pete et all,

I have seen erroneous postings about the Aqua Hot numerous times

pertaining to fuel usage.

The Aqua Hot under 100% duty cycle (running 24 hrs a day) will ONLY

burn 3 gals a day, NOT 1/2 gal an hour like a generator.

BUT, since it couldn't possibly run that much, you really shouldn't

give any thought to fuel consumption.

I have had an Aqua Hot in my last two coaches and NEVER winterize,

only use the AH. Last winter, when I didn't use the coach for 3 months

(an all time first for me LOL) I used 100 gals of diesel over 90 days

of use with temps between 10-30 degrees.

Don't just take my word for it, call them and ask for yourself, but it

*really* doesn't use much fuel.

Paul 97wb43

--- In WanderlodgeForum@ yahoogroups. com, Pete Masterson

wrote:

>

> The all-electric 'Bird has AquaHot heat. Uses a Webasto burner to

> burn diesel -- about 1/2 gal per hour when the burner is operating.

> For low-demand use, it has a 2000 watt electric heating element that

> operates with shore power or the generator. The AquaHot is a great

> hydronic heating system. It also heats the engine water. I switched

> on the engine pre-heat at about 5 this AM and when I started up at

> about 8:30, the engine kicked over like it was a 95 degree day --

> only it was 31 degrees outside having reached a low of 26 during the

> early morning hours in Lubbock. The AquaHot also provides

> _continuous_ hot water for domestic purposes (think shower). You

> never run out of hot water, but if the source water is really cold,

> it can get a bit less than ideally hot toward the tail end of a

> shower. (Hint: use your onboard tank, it's usually warmer than ground

> water.)

>

> You don't need the generator or shore power for the AquaHot -- but

> you do pay for the diesel. The advantage is that you gotta fill the

> tank anyway, so it's no extra trouble (there is a small Racor filter,

> but it's never given any trouble and gets an annual replacement) .

>

> Of course, with diesel at $3.39/gal at some stations I saw today

> (Flying J in Amarillo was $3.21) it now costs about $1.60 to $1.80

> per hour to operate the Webasto burner.

>

> Pete Masterson

> '95 Blue Bird Wanderlodge WBDA 42

> aeonix1@...

> On the road at Lamar Colorado after a long day from Lubbock...

>

>

>

> On Dec 3, 2007, at 1:56 PM, bubblerboy64 wrote:

>

> > I had no idea that there even was an RV of any type that did not have

> > propane tanks? Guess that shows how out of touch I am. How about

> > heat in cold conditions? I guess you would certainly be running the

> > generator then? I guess you pays your money and takes your choice.

> > Gasoline or propane. Makes not a lot of difference?

> > John Heckman

> > central Pa

> > 1973 FC

> >

> >

> >

> <snip>

>







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