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Vaillant d.77 setting

Discussion in 'Plumbing and Central Heating' started by Harry Bloomfield, 23 Jan 2019.

  1. Harry Bloomfield

    Harry Bloomfield

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    Hi,

    Looking for some advice on the best Kw setting for d.77 and d.85 please. This sets the Max. Cylinder reheating output of the boiler. Boiler is Ecotec 418, default was set at d.77 = 28Kw. d.85= 5Kw

    Cylinder is an open vented, 117L heating coil (as near as I can tell) seems to read 0.44 m3 and I am aiming for maybe 60C.

    System is 9 radiators in a 3 bed semi.
     
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