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Zone valve leaking into Actuator (Drayton ZA5)

Discussion in 'Plumbing and Central Heating' started by Andy M, 14 Oct 2020.

  1. Andy M

    Andy M

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    Hey,

    Smoking and burning smell traced to this actuator as it tried to operate.

    On closer inspection, water inside the actuator body and the valve stem is soaking wet. Also covered in crud.

    Excercised the valve with the actuator off and the stem sheared away!!

    So - I’m thinking replace the valve and the actuator since water ingress to cabling and motor probably doesn’t bode well.

    Not familiar with this heating system, only had a combo and an unvented system previously.

    Do I isolate from the loft tank, and then drain down?

    thanks!!!
     

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  3. Chris_W

    Chris_W

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    Yes but only partial drain off required. Also make sure you dead test electrics.
     
    Last edited: 14 Oct 2020
  4. Harry Bloomfield

    Harry Bloomfield

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    You need to drain to just below the valve's level.

    Is the actuator mounted above the valve/ spindle pointed up at the ceiling? If not, worth modifying if you can, so it is above. It helps prevent minor leaks getting into the actuator electrics and wrecking it.
     
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