I got the figure by using a btu to kwh formula.

But the Stelrad Elite catalogue shows both watts and BTU!!!

With regards to reply are you saying that my boiler is probably the near max for the rad's I have

No. The Profile 80e boiler can be set to three different outputs: 17.58kW; 20.52kW and 23.45kW. I am suggesting that your boiler is probably set to the highest output. As you only need 17kW it can be adjusted by an RGI down to the lowest output. The boiler will then match the radiators.

You can check the setting yourself by gas rating. Turn your boiler on and run it for a few minutes then take a reading of the gas meter (you need all figures, not just the black ones). Leave the boiler running for two minutes then take another reading. Subtract one figure from the other and multiply the result by 30. This will give you the consumption in cubic feet or cubic metres per hour. On a metric meter the black numbers are cubic metres, the red figures are tenths and hundredths. On a cubic ft meter, each digit on the right hand black number means one hundred cubic feet, the red numbers are 10 cubic feet and one cubic feet.

So:

**Metric** : 1234

56 = 1234.56 cubic metres

**Imperial**: 1234

56 = 123,456 cubic feet

The relevant figures for your boiler are:

17.58kW = 2.18 cubic metres/hr or 77.1 cubic ft/hr

20.52kW = 2.5 cubic metres/hr or 88.4 cubic ft/hr

23.45kW = 2.82 cubic metres/hr or 99.71 cubic ft/hr

also as the boiler stat is set to 3, the boiler stat is incorrectly configured?

The boiler stat controls the temperature of the water leaving the boiler. 1 = 55C and Max = 82C. Assuming the control is linear, a setting of 3 is about 66C. This is too low. Did you set the boiler to 3 or has it always been on this setting? If it has always been on 3, it is another pointer to the boiler's output being too high.

If you gas rate test shows that the boiler is still on max output, the first thing to do is get it adjusted to the lowest output. You can then try setting the boiler thermostat to a higher output.