Vaillant EcoTec Plus 630 - No pressure - open service valves

Discussion in 'Plumbing and Central Heating' started by greenboy5, 23 Aug 2010.

  1. greenboy5

    greenboy5

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    Just had new plumbing/CH system installed (condensing Vaillant boiler and unvented Telford Tempest cylinder)
    but when I turn it on, pressure is 0 (and I get the error message 'F22'). I recall my builder saying something about draining the system so that they could change/install the radiators.

    The 1st step in the user manual (which i.m.o. is far too complicated for the uninitiated) is to 'open the service valves' on the 3 pipes (heating flow, heating return & gas service) so that the screwdriver slots are in line with the pipework. The 2nd step is to 'fill the system up with water before putting the boiler into operation'.

    I have no idea how to do either. I am doubly confused as I can't even see a valve on each of the 3 pipes - only 1 on the gas service pipe, not on the other two. (See this pic - CH flow pipe is on the left and gas supply is on the right)


    There are also some sort of screw-like clips on the pipes-
    - should i screw these instead to open the valves?

    Any help muchos appreciatos as I am in dire need of a shower!
     
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  3. Gasguru

    Gasguru

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    Given that comment your best option is to get the original installers back. If the system has been drained it will need refilling with inhibitor etc.

    Just use the immersion heater to obtain hot water for now.
     
  4. kevplumb

    kevplumb

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    if you read the red tags on the screws you will discover they are earth clamps :idea:

    do you have
    one of these :?: :?:
     
  5. picasso

    picasso

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    Sure thats a good idea kev ? the builders might have left a rad off somewhere, should imagine there is a reason for the system to be left empty (and the boiler switched off)
     
  6. greenboy5

    greenboy5

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    Er.. is that a fill loop? I thought only combi boilers needed a filling loop...

    Am I correct that it would be connected to the CH flow and CH return valves respectively?

    I do vaguely recall seeing one there in the past, but it doesn't seem to be there anymore. The plumbers seem to have removed it ?!
     
  7. mickyg

    mickyg

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    them isos valves are fitted incorrectly. They need turning around. As said you need to use the filling loop to refill the system. Whats it got to do with the builder? surely the qualified heating engineer who installed the boiler and unvented system would be best advising on these matters?
     
  8. greenboy5

    greenboy5

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    So if I understand correctly - all I need to do is turn those 2 valves so they are facing downwards, attach a filling loop from one to the other, and hope for the best?
     
  9. greenboy5

    greenboy5

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    How do I do that? (yes - a total ignoramus here)
     
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  11. kevplumb

    kevplumb

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    what and they have never heard of stop ends :?:



    that will be the one thats suddenly vanished then :eek:

    you could try

    switching it on :idea:
     
  12. picasso

    picasso

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  13. kevplumb

    kevplumb

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    you do have a valid point sir :D
     
  14. greenboy5

    greenboy5

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    you could try

    switching it on :idea:[/quote]

    Would that be the electric switch next to the cylinder up in my loft? First time I've had to deal with a heating system myself
     
  15. ChrisR

    ChrisR

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    TRaitional immersion heaters are in places like these:
    [​IMG]

    If you have an unvented /Megaflo hot water cylinder (usually white and hard) it'll be on the side.
    There should be a thick flex going off to a fused spur
    [​IMG]
    which may have a light on it. Turn it on.
     
  16. Bunnyman

    Bunnyman

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    Jesus lookin at them soldered joints poor wiring an isolation flow an return valves fitted wrongly it's gotta b a diy job surely no reg bloke would leave that'
    an they snapped the door off lol
     
  17. kevplumb

    kevplumb

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    hence my comment
    ;)
     
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