air exit. forward open, rear back. If it is open I can feel air exiting when driving. later vans had the exit vents in rear side windows and added rubber seal on front door which I think reduces road noise but blocks the low pressure exit route for air that is employed by the early system. alistair On 28-Feb-11, at 10:06 AM, Don Hanson wrote: > I haven't been able to figure out exactly what these little sliders > are > supposed to do in my van, yet. I'd guess, since they are blue in > color they > have something to do with outside or fresh unheated air. I am > speaking of > the vent panels in the rear lower corners of the front doors in my > normal > (non-AC non-Westie) 84. They are about 10" long and 3" high, with a > blue > sliding door/lever and a louvered grill. > > Open or closed, I can't detect any difference in air inside the > vehicle. > The Vanagon heating and ventilation system, it's controls, it's basic > design, the way the heated coolant is routed and the valves that > direct it > all around....it all seems a bit weird to me...It does work, > somehow, when > all is well with the valves and cables and hoses, but you almost > seem to > need an Ouiji Board to un-ravel how they were thinking when they > built this > system. > > So what the heck to those slider's do? I am guessing they may be > an inlet > to take cabin heated air into the defrost? Or perhaps something to > do with > the vents on the dash corners? > > Anybody? > Don Hanson |
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