Hi,
In my system I have aux.heater and I use Type 6, but also I tried with the Type 659.
My question is why with the same parameters for the aux.heaters I get different results? ( bigger energy delivered with Type 659) ?
When in the result is "negative" delivered energy, does it mean that at that moment the temp. at the inlet of the heater was bigger than the set?
Kind Regards
Barto