Solar water heating systems and rainy Cape Winters

Solar water heating systems and rainy Cape Winters

If you have had a solar water heating system installed in an area with rainy/cloudy winter months, you may need to make seasonal adjustments to the timer that controls the system's electrical backup.   Now that the Western Cape has started experiencing its typical Winter rainfall again, this has meant less hours of sunshine for solar water heating systems to achieve the desired water temperature.  Those of you who have installed a solar water heating system in recent months have probably been enjoying solar heated water every day without much need for electrical backup.  You may need to adjust  the backup settings now that winter is here.   Most solar water heating systems have an electrical backup that is controlled by a timer to switch on at certain times of the day if the solar water heating system has not achieved the desired temperature.  Typically the timer would be set to switch on twice a day, once in the morning and once in the afternoon/evening,...
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