worcester junior 24 i flue gas analyser results

[desrob]

i did a check on this boiler and i got a reading of .0009 and a co2 % of 10.3%, i looked in mi and it asked for a % of 9.8 but it did not give any parameters is there a method to work this out ,or does anyone know for this model is it acceptable

 

[GreenArmy]

Was that on Max or Min?

 

[desrob]

Was that on Max or Min?

on max mate

 

[JonM]

I think max is 9.8% plus or minus 0.5. So 10.3% is on the limit so I would adjust down if doing a service. Min is 9.2% plus or minus 0.5% I believe.

 

[wnjswozo]

woresters can be very tempermental,had a fault of intermitant hot water,checked everything worcester tech said,did fga,just slightly out
altered to mi,hot issue sorted,was a learning curve that one

 

[mickeyuk]

Yes thats right 9.8% max in service mode +/- 0.5% so 10.3% max what are ppm co when testing should be below 200 and 0.002 co/co2 % not 0.004

 

[GrahamM]

i did a check on this boiler and i got a reading of .0009 and a co2 % of 10.3%, i looked in mi and it asked for a % of 9.8 but it did not give any parameters is there a method to work this out ,or does anyone know for this model is it acceptable

Did you let heat for at least 10 mins before your FGA?
In any case 10.3% is on the limit so would be your choice wither you want to start messing about with it to bring more into line. Personally I avoid messing around with gas/air ratio valves as much as possible and would leave it at that.