This might help, German text and diagrams 

http://www.t3-infos.de/images/Eberspaecher_BA6_DA6.pdf

Alistair

> On Feb 9, 2015, at 2:13 AM, JordanVw@AOL.COM wrote:
> 
> ok a few canadian listers  have said their waterboxer vanagons have
> eberspacher BA6 belly pan gas heaters..  ive never seen or heard of this  before
> but apparently they exist.    is there any canadian lister  with the BA6 on
> their waterboxer van that can take pics of the ducting  setup?     where does
> the heated air enter the  cabin?   on the waterboxer vanagons the center
> duct hole in the dash  has coolant lines etc going thru it, this would be
> where the heated air would  have come in for aircooled vanagons with the gas
> heater.. so where does the  heated air enter the cabin?