strada Aquatherm STA140UC, Техническое руководство

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28/03/19
10
Tank is set at 75°C
but the mains
pressure
temperature drops
quickly when running
a tap (e.g. bath)
1) If an inhibitor has been installed, check with the installer that it
has been installed at the correct proportion and checked at
appropriate frequencies.
2) The in-line strainer in the cold mains supply to the unit may be
choked and require cleaning.
3) Carefully check the hot water temperature flow into the mixing
valve. If it is very hot, it may be that the valve needs to be
checked / replaced. A competent installer should check the
mixing valve for blockages within the internal filter.
4) If the DHW Coil is giving an initial heat transfer and then fading,
this could be a sign of scale build up inside the Heat Exchanger
Coil, especially if in a known hard water area. A competent
installer would need to descale the DHW coil and check/fit
descaling equipment.