strada Aquatherm STA140UC User Manual (English)

Questions and Answers:

M
Melvin DavisAug 5, 2025
Why does my strada Storage hot water temperature drop quickly?
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  Juan MaldonadoAug 5, 2025
  Several factors can cause a rapid drop in hot water temperature: If an inhibitor has been installed, ensure with the installer that it has been installed at the correct proportion and checked at appropriate frequencies. The in-line strainer in the cold mains supply to the unit may be choked and require cleaning. 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. Scale build up inside the Heat Exchanger Coil, especially if in a known hard water area could be the reason. A competent installer would need to descale the DHW coil and check/fit descaling equipment.
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Deborah FloresAug 11, 2025
What to do if my strada Storage water is lukewarm even at 75°C?
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  Angela BoydAug 11, 2025
  If your thermal store is at or approaching 75°C - 80°C, first, verify that the Thermostatic Mixing Valve is correctly set. The maximum temperature of water from the Mixing Valve should be about 55°C. If correctly set, check that the flow rate at any outlet (e.g. bath tap) does not exceed 18 Litres per minute. Excessive flow may hinder sufficient heat transfer; reduce the flow or fit a flow restrictor to increase the temperature. If these steps fail, a qualified installer should inspect the mixing valve for internal blockages.
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Vincent HoffmanAug 19, 2025
Why strada Storage doesn't produce enough hot water?
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  zhouseAug 19, 2025
  Check the heat sources and their input in (kW) to the store. The kW input may be lower than the kW output, preventing the store from producing enough heat for the exchanger to provide heated mains pressure water.