Aqua Hot fuel consumption (was Re: dry camping)

[Ross MacKillop]

Hi,
Very confusing.
I have 2 switches only.
1 on the dash èngine preheat and one in the galley area `webasto
The eng. preheat turns on the webasto switch.(ie ligts it up)

The manual is quoted here::
Normal operation..........
......
After the ignition period (about 10 sec) ,the ignitor shuts off, and the burner
continues to operate. The heater will operate until all the zone thermostats are
satisfied,or until the heater reaches its normal operating temp. of 180
degrees. Once the normal operating temp is reached the burner itself will cycle
off and the combustion fan will operate for an additional 2 minutes to purge the
burner. If a zone thermostat, domestic hot water aquistat ,or engine heat
exchanger aquistat is not satisfied, the circulation pump will continue to
operate.If a thermostat cannot be satisfied by the residual heat in the system,
and the water temp drops, the burner will restart and cycle until all the
thermostats are satisfied. Once the thermostats are satisfied,the heater will go
through its 2 minute purge, and the circulation pump will ease. The circ pump
will operate if the remote switch and any thermostats or the domestic aquistat
are on.The circulating pump will
be activated independently by the engine heat aquistat.

When driving, I get no heat unless I turn on the webasto. When I pull off the
highway with the engine running, the webasto burner cycles. Perhaps the circ
pump doesn`t come on independantly as suggested above.
By the above description, I think the circ pump should shut down occasionally --
better for dry camping.
Does anyone have it operate this way.

Ross

----- Original Message ----
From: Leroy Eckert
To: WanderlodgeForum@yahoogroups.com
Sent: Tuesday, December 4, 2007 9:42:14 PM
Subject: Re: [WanderlodgeForum] Aqua Hot fuel consumption (was Re: dry camping)













I guess that is what I was trying to say. Not matter the
configuration, if hot water is not moving it is not possible to have continuous
hydronic or radiant heat. Well stated Pete.

Leroy Eckert

1990 WB-40 Smoke N Mirrors

Dahlonega , GA

Royale Conversion



Pete Masterson wrote: When I'm
going over the road, I turn off the "hydronic heat" switch

on the dash board. That keeps the burner from running, but the

circulation pumps still pump as I'm able to turn on the thermostats

and get heat from the A-H using engine heat only. This is one of

those non-intuitive Blue Bird "secret" (otherwise non-documented)

facts. I hate to admit this, but I only discovered this recently. But

I only recently discovered that the Engine Pre-Heat uses the AquaHot

to heat the engine. In my case both the "pre-heat" and the "hydronic

heat" switches must be on for it to work.



At least, it's how it works with my system.



Pete Masterson

'95 Blue Bird Wanderlodge WBDA 42

aeonix1@mac. com

On the road at Golden Colorado



On Dec 4, 2007, at 5:41 PM, 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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