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Discuss Close coupled tee's, who else has tried it ? in the Central Heating Forum area at UKPlumbersForums.co.uk.

  1. chris watkins

    chris watkins Plumber

    20170906_192002.jpg
    This one has been in for a year now, it sorted out there existing heating system which had a pump on pump trying to get the water to circulate around the bottom to floors.
    Only went there to investigate plastic pipework which had blown apart twice.
     
    • Like Like x 1
  2. sammathias

    sammathias Plumber GSR

    Is that a 1 pipe system?
     
  3. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    No think of a llh but smaller pump for boiler then a pump for the system
     
  4. sammathias

    sammathias Plumber GSR

    I know that mate looks like flow and return are tee'd into the same pipe tho?
     
  5. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Yes left horizontal pipe is the common return

    Right horizontal pipe is the common flow
     
    • Informative Informative x 1
  6. chris watkins

    chris watkins Plumber

    35mm top is the flow to system, bottom is the return so it is a two pipe. UPS2 25-80 on the flow just on the other side of the wall feeding an S plan with column rads over 5 floors.
    Someone had put the Alpha to do the whole system, then added the 25-80 after the 28mm heating zone valve and walked when it didn't work leaving customer without heating to the main living areas.
    They then had a full Evo system installed so they could shut off the upper floors to try to get the heat to the lower ones but still didn't work.
    Silly buggers also removed both thermostats from the unvented cylinder & replaced with a prob cos apparently they were not required any more!!!:mad:
     
  7. Ric2013

    Ric2013 Plumber

    Why does it have an ABV? Surely that was not needed?

    Or is it a PRV?
     
  8. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    prv
     
    • Like Like x 1
    • Agree Agree x 1
  9. chris watkins

    chris watkins Plumber

    Expansion vessel taken off is the other one, off of the boiler return before the filter.
     
  10. Chris Clarke

    Chris Clarke New Member

    Is this a combi boiler Chris?
     
  11. chris watkins

    chris watkins Plumber

    No, Heat Only
     
    • Like Like x 1
  12. Chris Clarke

    Chris Clarke New Member

    So does the boiler have an internal pump to ensure minimum flow is satisfied?
     
  13. chris watkins

    chris watkins Plumber

    No, that was the alpha. What you can't see in the photo is the 25/80 on the top 35mm pipe (flow) in the side loft, to the right.
    This does the system the alpha dose the boiler.
    Only used the alpha as it had already been installed (set Min).
    You could use your 15/50 on speed 1 in place of this & buy a ups2 15-50/60 for the system set on variable. I would guess at speed 2 as you have lost the boiler resistance.
     
    • Like Like x 1
  14. Chris Clarke

    Chris Clarke New Member

    Thanks, makes sense. Just need to find someone local who understands and can do it for me. Looks like a promising solution.
     
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