Δ T I am greatly reassured by your last post, the previous one made me think that you were so typical of our industry motivated by financial gain only with no real understanding of the technology..
now explain to me again please why you think compensation controls are a nonsense?
honeywell... and compensated mixing valves for UFH for exampl
the fact of the matter is that modern condensing boilers have to accept compensation controls, and it is for good reason, they provide quantifiably better installations in terms of comfort, reliability and efficiency.
Its nonsense to invest in a boiler and to by pass its circuitry with the use of simple switches...why would any one do that?
That may be true in some continental countries, but since when has it been compulsory in the UK?the fact of the matter is that modern condensing boilers have to accept compensation controls.
Because they have no choice?It's nonsense to invest in a boiler and to by pass its circuitry with the use of simple switches...why would any one do that?
Can't ever remember saying that. I do remember commenting that most boilers do not modulate low enough. so they will spend much of their time in on-off mode.As Mr Hailsham has said before, modern boilers incorporate modulation and anti cycling technology, all reducing the impact of WC.
I wonder why weather comp is compulsory in Germany?Sure, weather comp has its benefits, but they are not as great as you suggest because of the other measures in place in the boiler box.
I think they have hit the nail on the head there. The vast majority of installers wouldn't know what you were talking about if you mentioned weather compensation. One guy I know thought I was talking about frost protection.Honeywell ... don't think there is a developed market for it in the UK at present, from either a customer demand or installer knowledge perspective.
OT controls are not manufacture specific.When they do launch the controls they have talked about for general availability, I am sure they will be easier to use than the manufacturer specific ones.
But not significantly and later versions have always been backwards- compatible. So you can connect the latest OT boiler to a first generation OT controller and it will work, albeit to the abilities of the old controller.The trouble is, although there is a standard in the form of Opentherm, it has been changed a few times
There is a considerable difference between heating a house from -17 to 21C and maintaining a temperature of 21C once the house is up to temperature. If the house had been stone cold at -17C the 15kW boiler would only be able to raise the temperature by 23C to 5C.You seem to think that a properly designed heating system will only achieve a 23 degree difference from out side temp to internal temp.
Are you seriously saying that last winter at minus 17 houses where only reaching 5 degrees inside or up in Aberdeen houses where not even getting above zero??
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