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- 24 Feb 2008
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Hi guys, first thing i am an domestic appliance engineer and gas safe registered but don't do boilers, fires and cookers only, last year we moved into our first house that has had a new boiler a bout 3 years ago, its a 28kw eco tec plus 837, now its only a small house and i believe its was oversizes as the last owner had intensions to extend but moved instead
although the boiler runs happy im convinced its not 100% happy, after looking into everything iv found its massively over rated, based on calcs our house should need 15kw, based on the sizes of the 7 radiators fitted they come to a total of 29,000 but which calculates to 8.5kw.
obviously we are massively over rated, been in the boiler settings and d.0 was set to 28 so it was on max, i have no dropped it to 16, iv also extended the pump over run as 5 mins did not seem long enough.
i know this is a modulating boiler so should sort its self out to a point but frim the spec it stated at 60 degree its range is 12 - 28 on the central heating, is that the min and max modulation rate ?
Any suggestions on best settings to get the most out of this
thanks in advance [/b]
although the boiler runs happy im convinced its not 100% happy, after looking into everything iv found its massively over rated, based on calcs our house should need 15kw, based on the sizes of the 7 radiators fitted they come to a total of 29,000 but which calculates to 8.5kw.
obviously we are massively over rated, been in the boiler settings and d.0 was set to 28 so it was on max, i have no dropped it to 16, iv also extended the pump over run as 5 mins did not seem long enough.
i know this is a modulating boiler so should sort its self out to a point but frim the spec it stated at 60 degree its range is 12 - 28 on the central heating, is that the min and max modulation rate ?
Any suggestions on best settings to get the most out of this
thanks in advance [/b]