Date:         Tue, 8 Nov 2005 16:31:12 -0800
Reply-To:     mark drillock <drillock@EARTHLINK.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         mark drillock <drillock@EARTHLINK.NET>
Subject:      Re: venting, was Re: dometic 182b question
In-Reply-To:  <vanagon%2005110812351356@GERRY.VANAGON.COM>
Content-Type: text/plain; charset=us-ascii; format=flowed

The RV diagram shows the burner exhaust area all right. The burner heat
and gases exit into the upper area behind the fridge same as the heat
from the fins. That is part of why the design of the chimney is so
important in that particular discussion. Our Westy fridges have a
separate combustion venting system is not used by most RVs so the
hottest air goes right out our vent tubes.

The Westy fridge combustion vent system is superior from a practical
stand point. It keeps all the dangerous combustion byproducts completely
outside. It does so without an intake vent low on the outside of the
vehicle like RVs have. It does so without an exhaust vent high on the
outside. Imagine how much worse the rust problems would be on that side
if there where 2 large always open vents on the side, like most RVs have.

Removing the insulation behind your fridge was a mistake IMO. The
insulation helps keep the heat from the sun from overheating the area
behind the fridge. Whenever the sun shines on that side for very long
the fridge cooling fan can be triggered even with the fridge off.

What I and others have done is to install a fan that vents the hot air
from behind the fridge to the outside. My main problem is my fridge
keeping food too cold unless I adjust the temp setting. I recent camped
for 12 days in Baja, days in the 90s, nights in high 70s and low 80s.
The fins inside my fridge were a solid block of ice that grew larger
every day.

Mark

Roger Sisler wrote:

>These diagrams all imply, as well as I can tell, that the waste heat is
>contained into a vent that will exit the roof.The actual burner heat and
>vent is not shown here.In the vanagon, this waste heat is all contained
>until it exits the grill behind the stove-and then goes into the pasenger
>compartment.All I did was to keep as much burner heat as possiable in the
>vent pipe where it belongs so it can exit the van completely. I think the
>heat from the fins is will stay in the interior unless it is seperately
>vented somehow. I did this by removing the fibgerglass insulation on the
>van wall.I hope someof it will conduct out.
>
>
>