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Joined: 18 May 1999
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 Posted: Tue Feb 25, 2003 4:14 pm Post subject: |
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These are both types of heating controls, which go beyond the minimum requirements of the Building Regulations. Whilst they can be purchased separately they are often included in a single controller.
As the heat loss from a house is lower in mild conditions than it is in freezing conditions it is logical that the heat input should also be lower. Weather compensation adjusts the temperature of the water flowing around the radiators and /or underfloor system according to the outside temperature. This leads to the radiators/floor giving a more consistent heat output rather than the on/off cycle, which would otherwise result. It also has the effect of reducing the average temperature of the water coming back to the boiler so increasing boiler efficiency - especially condensing boilers.
Optimisation on the other hand is a sophisticated time control. Instead of setting a time for the heating to come on and hoping that the house will be warm enough, the user enters the time by which the house needs to reach a set temperature. The controller brings the heating on earlier or later as required depending on how cold it has been overnight. Optimisation therefore provides improved comfort rather than efficiency and is particularly suited to houses with a lot of 'thermal mass' and unresponsive heating such as a screed based underfloor system.
Regards, Webmaster
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Regards, Webmaster |
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