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Discuss No its not a joke . in the Plumbing Forum area at UKPlumbersForums.co.uk.

  1. townfanjon

    townfanjon Trusted Plumber GSR Top Contributor!!

    guys I am just interested in what would be your plan of attack on this one .

    Large house, the home owner inherited this problem so we dont know if its been like this from day one .
    I am incredibly busy and dont even want to do it ..

    18 ish rads , 35 kw vokera bag of shi* system boiler . 3 rads furthest away form boiler dont heat up .

    No stuck trv pins , open l/s , shutting other rads of doesnt seem to make any difference .

    I put a new pump in a fortnight ago , no difference.

    As said just interested in where you would start. Go for it lol

    Thanks in advance .
     
  2. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Pump too small 25-80 pump needed

    Also bet the expansion vessel is too small around 20 l needed
     
    • Agree Agree x 1
  3. Harvest Fields

    Harvest Fields Trusted Plumber GSR Top Contributor!!

    New boiler and powerflush. Old non return stuck?
     
  4. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Easy way to tell shut 5 rads do the others heat up ?
     
  5. townfanjon

    townfanjon Trusted Plumber GSR Top Contributor!!

    Vessel wont make any difference to rads not heating, pump is genuine Vokera , so I dont really want to put another one in , but have no idea what size it is to be fair .
     
  6. Harvest Fields

    Harvest Fields Trusted Plumber GSR Top Contributor!!

    He said he has tried that mate.
     
    • Agree Agree x 1
  7. townfanjon

    townfanjon Trusted Plumber GSR Top Contributor!!

    Tried it , no difference ( sorry he has )
     
  8. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    True but find there regularly undersized
     
  9. SimonG

    SimonG Trusted Plumber Top Contributor!!

    Zone it. Pump on each zone.
     
  10. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Try shutting all but them 3
     
    • Funny Funny x 1
  11. Harvest Fields

    Harvest Fields Trusted Plumber GSR Top Contributor!!

    :eek::eek:
     
  12. YorkshireDave

    YorkshireDave Plumber Top Contributor!!

    Personally, Id start with shutting all rads down but one of the dodgy ones (opened up fully). See then if anything happens and try bleeding to see what emerges. Id then try closing the bypass, if there is one, to try to get it to force its way - turn pump up full pelt and bleed again.

    If that doesn't get something through there is def a prob :eek: and you're busy for the next 5 years. If it does something, do same with other two till the crap is distributed.

    You will also prob find you'll disturb a load a junk if its not been flushed recently. That then, as you well know, means sh1t loads more work...

    Come on Town. If you need something doing, ask a busy man!!:)

    EDIT: Bu66er. Missed the other posts
     
    • Funny Funny x 1
  13. townfanjon

    townfanjon Trusted Plumber GSR Top Contributor!!

    Erm a maybe , I will work out KW loading and I have a idea its running through 22mm zone valves , but not sure on how much they can cope with
     
  14. Chalked

    Chalked Plumber GSR

    Fit a cheap low loss header to the boiler and a suitably sized pump,to the rads. Probably getting lots of restriction through the boiler.
    Give it a good flush while your on.
     
    • Like Like x 1
    • Informative Informative x 1
  15. Chalked

    Chalked Plumber GSR

    55,000 through a 22mm zone valve.
     
    • Informative Informative x 1