On Wed, 15 Jan 2003, Forhan, Thomas wrote:

> Air intake is a safety issue: you definitely want to get the fresh intake
> air from outside the van. That completely closes the combustion loop so that
> the entire process-intake, burn and exhaust, are sealed from the air that
> you are breathing. There is no opportunity for combustion biproducts to
> enter the  passenger compartment. Please make sure this is how you install
> it.

I'll second this.  I have no experience with the Propex, but I once
installed a Stewart Warner gas heater in a Westy.  I didn't hook up the
air intake to the outside.  I had problems with the last bit of exhaust
fumes wafting back into the cabin after the combustion blower shut off.
Smelled terrible.

             _ _
  __ _ _   _| | |  | David M. Brodbeck (N8SRE)              Ypsilanti, MI
 / _` | | | | | |  +-----------------------------------------------------
| (_| | |_| | | | @ cyberspace.org
 \__, |\__,_|_|_| "To the optimist, the glass is half full.  To the
 |___/             pessimist, the glass is half empty.  To the engineer,
                   the glass is twice as big as it needs to be."