hi, I am after some advice from a fellow GSR gasman. I serviced a vaillant ecotec earlier. the boiler was fitted in 2008 and has been serviced yearly. the property has been void for around 10-16 weeks and so the gas has been off at the ecv and the boiler has been inactive the whole time.
anyway I put my analyser in the combustion side of the flue and the readings were extremely high, something along the lines of
CO ppm 31000
Ratio 3.5555
CO2 8.0
I know the co2 isn't that far off but why am I getting 31000 parts per million when it should be no more than 250?
I inpected the main burner and all appeared normal, I also cleaned it and then fitted a new vaillant graphite seal. I also inspected the flue and it was all sealed.
still I was getting these ridiculous readings so I put the analyser into the other side of the flue to get an O2 reading which was correct at 20.9 but there were more than 500 ppm on the oxygen side when it should be 0.
can anybody point me in the right direction as to what the problem is as I have never had readings as high as this before. I often have to adjust them but they are always only slightly out.
thankyou
anyway I put my analyser in the combustion side of the flue and the readings were extremely high, something along the lines of
CO ppm 31000
Ratio 3.5555
CO2 8.0
I know the co2 isn't that far off but why am I getting 31000 parts per million when it should be no more than 250?
I inpected the main burner and all appeared normal, I also cleaned it and then fitted a new vaillant graphite seal. I also inspected the flue and it was all sealed.
still I was getting these ridiculous readings so I put the analyser into the other side of the flue to get an O2 reading which was correct at 20.9 but there were more than 500 ppm on the oxygen side when it should be 0.
can anybody point me in the right direction as to what the problem is as I have never had readings as high as this before. I often have to adjust them but they are always only slightly out.
thankyou