Heating start time

Begonnen von david, 25. November 2011, 20:03:43

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david

I want to have at 7h in the morning a temperature of 21°. At night, the heating only switches on when it is colder than 16°. Does anyone have an idea how to calculate the optimal start time for the heating? This is to have exactly 21° at 7h.The goal is not to have cold in the morning and also not to start to early with heating and wasting energy.
Thanks.

kenzo

This depends on so many variables which are only known to you that I believe it's impossible to provide you with answers.
- what's the flow temperature? Do you want to change that as well?
- what kind of house is it? (stone/wood/etc.)
- how big is the house?
etc.
My approach would be to simply test it - try start heating at 6am, when do you finally reach 21°C?
Plus, does it make sense to go to 16°C at all?

shooter

There is a block for this, the essence of it, is measure the real temp at 6 oclock. If the temp is 16 and your slope is 5 degrees/hour start heating now.
If temp is 17 start heating at 4/5 so about 6:15 etc.
As the slope must be measured just start at 6 and check when 21 is reached. this will be your slope.
remember to set max watertemp on the boiler as this will influence the time cosiderate.