Quote:
Originally posted by danielf
The central heating system in my dad's house would do the same. It would start pumping hot water around in the midst of summer (despite the heaters being off). This was because it supplied the hot water as well. Since my dad was away over summer, no hot water was used, and the system needed to loose the heat. It took me a while when I was staying there to figure how to lower the water temperature to prevent it from doing this...
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would that be the thermostat?