Help with CH

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  • Help with CH
  • djglover
    Member

    System needs balancing, which means adjusting the flow rate. I recently did it with my towel rails which run on a different circuit to the rads, it was hard enough with 3 so good luck!

    stumpy01
    Member

    Yeah, it sounds that will all the other radiators turned on, you aren’t getting enough/any flow through the bathroom radiator.

    There are plenty of online guides to balancing radiators to even the flow out.

    Premier Icon RicB
    Subscriber

    I do love this forum!

    All the flow (inlet) valves are fully open, so I bet that’s it.

    Seems strange how all rads worked initially though, as it’s only the TRVs I’ve touched.

    Premier Icon RicB
    Subscriber

    Moved into a house with a completely new CH system installed approx 12 months ago. Condenser boiler with pressurised hot cylinder. All rads working initially.

    Had most of the rads turned right down over summer, mainly so we can keep the towel rad on in the bathroom.

    Now the bedroom rad doesn’t really warm up, even though all other rads do.

    TRV on full (5/5)
    Valve pin under TRV moves up and down freely
    Inlet valve gets quite hot
    Outlet (TRV) gets lukewarm
    Rad gets lukewarm, mostly at the top. Cold at bottom
    Bled it – no air in rad.

    I suspected it was an airlock so did the usual trick of turning all rads off except bedroom one, and turning thermostat up. Left for 3 hrs

    Bedroom rad got hot all over, suggesting the fluid can get through somehow

    Then when I turn all the other rads back on the bedroom rad goes back to being lukewarm.

    Help?!!

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