Only downside I can see is if its a open vented system that depending on the way the vent & cold feed are arranged that you could get pump over into the F&E tank leading to air ingress so wouldn't advise it if it a OV system. If a sealed system then no problem as the pump can only develop 0.7bar head (max) and the boiler PRV is set to 3.0bar.
Explanation of thermostat vs control temp
- Thread starter Dylan T
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What about bypass valves and things like that? Can they open up when pump is too powerful?
There ave been several iterations of Logic boilers and an ErP pump may be operated fixed speed (single wire connection) or modulated (two wires to the pump). Confirm Jonathan's data is correct.
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Sorry for late reply, hard to keep up with what this thread has become !
My costs are really just the new tado kit, providing it's back in stock soon, which costs around £180. Not a huge cost, but it's likely to be some bother trying to get it actually working as I think this thread proves, manufacturers need to start making this stuff clearer. Getting an installer to sort for me seems even harder as I've asked around and no one wants to touch the 'new tech stuff'.
What is that NG based on? Apologies if i've missed a chart/post about that; my current boiler does do some basic modulation but that's it.
And yes the other factor is the comfort which at this point is hard to calculate as it's a huge unknown, but comments regarding the tado suggest the heat constancy is noticeable.
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