All the pics i have seen of other people engine bays have the heater blower auxiliary fan thing with the lhs ducting low, and the rhs high. LIke this (random interweb pic): Mine is theother way around ie lhs ducting is uppermost. Is my fan the wrong way around? N.b. i hear the fan run when i move the dash controls but i don't get any air blowing thru the vents. Should i swap it around and see if that helps? Which was should air be blown so i can check it? (ps the alternative title to this threat was "will i get blown more if i change my orientation?" but i decided against that..)
Mines this way and the air blown is quite frankly pathetic. I fitted an auxiliary fan in the long pipe under the Bus. I suspect it may have been leaky heat exchangers/joints so it may improve now that @Paul Weeding has been at it!
Think you should have gone with the original title! If you can see the impeller (fan) from the engine bay door it’s the way round VW intended it. That said it doesn’t actually matter which way around it is. The issue with fitting a fan in the duct is it creates negative pressure in the system and unless it’s all sealed perfectly you can draw in nasty niffs. It’s an easy solution to the air velocity problem and I have one on mine but looking at fitting a bigger fan blowing into the system and creating positive pressure so that any leaks will blow out rather than draw fumes in. That’s the theory anyway!
This is our raggedy engine bay and fan. (ignore the non-standard grey plastic sheet)! & the fan power is excellent through the dash vents. As the guys above have said, it matters a lot how well the system is sealed!
Mine is also like the pics above and this is how it's shown in the parts fiches. Perhaps yours is off someting else. Check first with the hoses off and see it's blowing OK. The standard fan should have some flaps in each of the two outlets to stop backflow from the heat exchanger returning to the engine room.
Hiya bud. Yeah, sorry for not being in touch. Loads of work on the bus but no progress it seems. It's like bloody decorating in that all the work is on the prep!! Also back on web work to try & pay for this years travel. Cut a "big" 70mm hole in the long side yesterday for the gas filler point, etc etc, ply floor now down, leisure wiring designed & some installed (waiting for Ctek mxs10 to arrive) R&R being templated with Conty hinges then the real progress on cabinets can be made. Oh & the steering box is leaking. TE is approaching fast & feeling the pressure....I'll buzz you over w/end. ps sorry @rob.e for digressing from your thinly disguised thread!!
Yes - it shouldn't really matter which way around the fan faces. It sucks air in through the centre and blows it out both both sides. Are your heater flaps connected and working? The dash lever should open them, but in lots of cases the cables are disconnected/missing. It's either that or the system's leaking and not airtight.
Look under the bed - are there metal pipe heat outlets there? All the heat might be disappearing under the bed.
^^^THIS^^^ I found most of my available heat was being used to heat the propex, leisure battery and charger! Also look underneath, the 'lather bag' joints and all the other paraphernalia under there will undoubtedly be leaking.
