Biasi riva compact he 28 high Co ppm reading

[FlowGas]

Hi guys,

Had a landlords cert this morning for a empty rental property, biasi riva compact he 28. The combustion reading where Co ppm: 1170, co2% 8.8, ratio : 0.0132.

Will be doing a full strip down service and adjusting the min max gas pressure at valve. Would this be enough to bring the readings within range or is there an underlying issue?

Gas work is a side business for me, working a 9-5 in a completely different sector so just needed a little guidance from yourselves would be much appreciated.

Have isolated gas supply to boiler and made safe until I return tomorrow.

Thanks
Jags

 

[newcastle phill]

Its well out but I suppose you will have to assess the burner condition upon stripdown and go from there in the usual fashion and see if anything obvious is to fault.

 

[goz666]

Whatever the MI's say I would follow. If not right call technical.

 

[FlowGas]

I've cleaned the primary heat ex and burner. Checked burner gas pressure all OK. Flue conditions seem sound.
Tech line open Monday - Fri grrr
Any other suggestions.

 

[solutions]

Check the flue hood, they split. If it has it will throw the co out by the kind of figures you are seeing. It is also occasionally accompanied by a whooping sound during combustion, as it re burns exhaust gasses. Check for signs of condensate tracing rust lines down the back of the case behind the hex as its a sure sign.

 

[Paulplumb]

Flue condition seems okay? Have you done a flue integrity check at the air sampling port?

 

[bassmonster]

Sorry for hijacking, but how do you do a flue integrity check?

 

[kris]

Run analyser hose on port and keep eye on oxygen level 20.6% and if it changes you'll know the inner tube has cracked or bad seal,

 

[kris]

If there's not an air port then just a visual will do, I'm not sure if that one has an air port,

 

[ambrosia]

the rubber seals where the flue joins the boiler, theres almost certainly a proper name for that rubber washer unfortunately i dont know what it is, but they tend to go on those boilers

 

[GrahamM]

What was BP?