baxi neta-tec fga results

[deano1011]

So ive just commissioned a new boiler and even though the mi's don't require a fga test for commissioning i always do one anyway.. however this one seems a bit high. what do you guys think

Baxi neta-tec 28kw
o2 % 4.7
c02% 9.2
co ppm 117
co/co2 0.0012


i usually get a 0.0006 out of these boilers when i install them?

 

[ianmcd]

Try running it for a while then test it again some heat exchangers have a coating on them to prevent corrossion before they are installed and you have to burn this off before you get a correct combustion reading

 

[deano1011]

i did run it for a day beforehand.. maybe needs a week or so.
only noticed today my analyser would not read 0.008 as the maximum cut off for boilers. without wanting to sound stupid i presume 0.0080 is the same reading? Ive never had a reading before that is'nt 0.000 someting
Bloody zeros get me every time