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Old 03-01-20, 05:32 AM   #566
donspain
Lurking Renovator
 
Join Date: Mar 2020
Location: Oslo
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Has things changed since 2011? My exhaust air holds normally around 10 degrees C in the winter time, with the preheater working slightly to avoid freezing in the inlet. Expelling this relatively hot air for hours, must represent a loss in energy and money. Am I totally wrong? My inlet temp during winter is set to 18 degrees C, and returned inside air is normally in the area of 21-23 degrees C. The efficiency of my exchanger is very high due to enfalty construction, with heat recovery also from moist in the air. My system will in automatic mode and with the use of modbus sensors and modbus emulated knx and 1 wire sensors, be completely run by itself, with the minimum speed of 3%. Having way to much fresh air in the house when no-one is present, is a waste of energy....
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