Vaillant d.77 setting

Harry Bloomfield · 23 Jan 2019

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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Vaillant d.77 setting

Harry Bloomfield

DIYnot Local

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