Tom;

Unless the Wave 3 design has been changed in the last couple of years,
I don't think it has any kind of automatic shutoff other than a "100%
safety shutoff valve," which I take to mean that it completely shuts
the gas off in case the catalytic process goes cold. I don't think it
has any kind off low oxygen shutoff.

However, it uses a lot less fuel than anything I looked at, per BTU,
and therefore will deplete less oxygen than the others. That being
said, I still cross ventilate as the directions say and mounted a
pancake computer fan in the window above the stove (check it out at
http://www.knology.net/~felder/Vanagons/) to pull air into the van and
I get no condensation. I love the heater and its output!

It's mounted on the bulkhead behind the passenger seat, so it can't tip
over.

Jim

On Nov 3, 2005, at 5:22 PM, bueses wrote:

>> On 11/3/05 11:36 AM, "VWNut Hawk" <vwnut@HAWKCOMPUTING.COM> wrote:
>>
>>> I have one.  It has a tip over and CO sensor.
>>> They work ok.
>>
>> How well do the Mr. Heaters work at altitude?  The FAQ on their
>> website
>> states:
>>
>> "The Portable Buddy uses an Oxygen Depletion System (ODS) which is a
>> safety
>> device used to light the heater as well as shut it off if Oxygen
>> levels drop
>> to between 18% and 19%. The Buddy should operate without any problems
>> up to
>> 7000 FT above sea level. At higher altitudes, the ODS may cut-off
>>
> That's why I got the Wave 3-it is "jetted" to work at high altitude +
> has
> the safety devices you mentioned.
>
> Tom
>