When it comes to Vanagons, my experience is limited.  Other than the WBX I purchased last summer for the trip with my son, I've crawled around almost exclusively TD Joker, California and Atlantic models in my search for the "right" van.  I have seen several with the heater installed under the rear bench to the passenger side.     None of these would have been BN4s as the fuel type was diesel.

On 29-Jan-2015, at 14:45, JordanVw@AOL.COM wrote:

> In a message dated 1/29/2015 6:00:34 A.M. Eastern Standard Time,
> RNicholl@NBNet.nb.ca writes:
> 
> Mine is  definitely an air-blowing heater and the installation looks to be
> factory ...  or a very well done dealer installation.
> The heater unit is aft of the fuel tank, but not on the centreline of the
> vehicle; it is offset to the driver's side.   There is an exhaust which
> comes out from under the shield to the side of the van.
> 
> 
> I guess I will have to drop the shield when the Hyena comes out of  storage
> this spring and see what lives inside.    I am familiar with  the DA6, but
> have always encountered it mounted under the rear bench on the  passengers
> side with ductwork up under the bench.   I also have an older  {non
> functional} Eberspacher on my '66 which is mounted under the rear  bench.
> 
> 
> The ductwork coming from this heater has outlets under the drivers seat
> and behind the front seats and walkthrough (aimed back at the cabin).    The
> timer is mechanical - the little green knob you push/pull and turn - as we
> had in an older bread loaf (which was an Eberspacher).   The vehicle  owners
> manual describes how to use the timer, but makes no mention of what  type of
> heater is on the other end.
> 
> 
> Roy
> 
> 
> 
> 
> regarding Eberspachers... the "B" in the BA6 means gasoline (Benzine is the
> german word for Gasoline)
> the "D" in DA6 means Diesel.
> the BA6's were mounted under the center of the vehicle after the gas tank
> and had a big sheetmetal cover concealing them.     the  DA6's look just
> like the BA6 and were mounted in the same place that the BA6  was.  if you saw
> a heater mounted under the rear bench - it was most  certainly  not a
> DA6.your thinking of another Eberspacher model.   maybe BN4 or something.