Rapido 7090 blown air heating

Discussion in 'Rapido' started by Scattycat, Nov 18, 2014.

  1. Scattycat

    Scattycat Funster

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    Evening all,
    I've just turned on the heating and I'm getting a real good flow of air out of all the vents apart from the one by the foot well. This one has hardly any air coming out.
    As far as I can see all the pipes are connected as they should be but as the pipes run under the floor and there doesn't seem to be any access to them it's hard to be sure.
    Any suggestions?

    I did have a thought that may be it should have a lower flow because the thermostat is above the door, but I'm pretty sure that last winter the flow was a lot stronger.
     
  2. jonandshell

    jonandshell Funster

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    Close all the other vents and see if the increased pressure blows out the family of field mice!

    Other duct blocking items are available!
     
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  3. Scattycat

    Scattycat Funster

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    Yep, already done that, nuffing !
     
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  4. jonandshell

    jonandshell Funster

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    If you shine a torch into the vent you should be able to see if the ducting is attached.
    The ducting can shrink back and detach from the vent due to the heat, if not secured to the vent by a screw.
     
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  5. Techno

    Techno Funster Life Member

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    You should be able to see the duct if you take out your drawer under the fridge.
    [​IMG]
     
  6. Techno

    Techno Funster Life Member

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    If it is OK below the fridge then it must have come off at the boiler, there are four outlets have you checked them all?
    two facing the front and two facing the shower
     
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  7. Techno

    Techno Funster Life Member

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    I would say it is the one in the foregound that leaves the boiler out of a front facing outlet.
    [​IMG]
     
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  8. Scattycat

    Scattycat Funster

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    Yep, that was the first thig I did.
    As I said, they all seem to be attached.
    All I can think is it is the Y shaped connection under the floor at the foot of the bed. I've taken out the under bed drawers but can't get to the forward end of the connection.
    I thought taking out the front of the step from the kitchen to the back of the van but I can't see how that can be done without dismantling the bathroom wall because it looks as though the step was put in before the bathroom and kitchen wall, ( good old Rapido)
     
  9. Techno

    Techno Funster Life Member

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    As you can see there are three ducts going under the shower
    1 must do the two bed outlets
    1 must do the garage/toilet
    1 the door way
    clearly there must be more than 1 Y or T and as you say Rapido built it pretty sh!t

    I imagine myself that the doorway one will come off the toilet outlet.
    Dismantling the sink unit so you can get the base out might reveal a Y or T
     
  10. Scattycat

    Scattycat Funster

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    I take it that on your's that the air flow from the vent by the door is as strong as the other vents.
     
  11. Techno

    Techno Funster Life Member

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    Yes it is pretty good but the toilet one is always red hot.
    Have you tried closing the garage one? it just causes condensation in there anyway
     
  12. Techno

    Techno Funster Life Member

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    I am right at this moment testing mine and I can confirm that the one by the door is linked to the toilet one as closing the toilet doubles the output of the other.
    I would say that the foreground pipe I mentioned is doing the outlet below the cooking area so the toilet and door must be off the nearest rear facing boiler outlet
     
  13. Scattycat

    Scattycat Funster

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    Thanks for that,
    Since my last posting I've been playing around with opening and closing various vents to change the flow.
    If I close all but the door vent and the heating is on its start up fast blowing I do now get a reasonably flow of hot air from it, but opening the toilet and the kitchen one it drops so I can Yardly feel it.
    Even with all the other vents closed it's nothing like the kitchen one that virtually burns your toes if you're standing by it.
    Later this morning, working on the basis that, as you say the door and toilet run off the same pipe, I'm also assuming that the garage one does as well so I'm going to try and run a plastic coated wire up the pipe to see if I can clear anything that 'might' be up there reducing the flow, although I can't think what, as there are no signs of mice anywhere in the van although Lin asked if I thought it could be spiders spinning a web. LOL that'll help us sleep at night, the thought of giant spiders coming out of the heating ducts while we sleep
     
  14. BreweryDave

    BreweryDave Funster Life Member

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    Try a blow back. Disconnected the outlet from the boiler first, then put a high powered hair dryer against the vent and blow back down the pipe???? Might do something if the air blows from the other direction. Just a thought.
     
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  15. Scattycat

    Scattycat Funster

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    Well, I've poked, prodded and wriggled a wire up the pipe from the garage towards the bathroom and something seems to have happened because the flow now from the vent by the door seems a little better, but I'm still not sure it's as good as it was when we were away last winter.
    If push comes to shove and I can't improve it then I might take a "T" off the vent behind the drivers seat and feed it to the other side of the habitation door because that vent is nearly as strong as the one in the kitchen and that's more than powerful enough.

    Anyway thanks for all your tips and advice folks, much appreciated
     
  16. Techno

    Techno Funster Life Member

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    What you propose is feasable after removing the battery deck, good idea (y)
     
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