biasi riva advance problems

[giarc00007]

hi guys, just wanting bit of advice. went to service boiler today checking fga results the emissions were sky high, got high emissions warning on fga screen. checked gas valve getting 20 mbar working pressure, also gas rated which was spot on. Also air intake was 20.6. Then took front panel off and fga results decreased to more safe readings. Isolated boiler till tomorrow was wondering what you guys would do next havnt checked air box yet.

 

[diamondgas]

Check the flue and flue joints at a guess? sounds like flue seal/s may be faulty?

 

[giarc00007]

Check the flue and flue joints at a guess? sounds like flue seal/s may be faulty?

thanks diamond gas, did quick check over of flue all looked ok but will deffo give a better check tomorrow.

 

[diamondgas]

It sounds like there's a lack of oxygen with the case on, loads when off! .. I'm not familiar with the boiler you mention but the symptoms point to oxygen starvation first thoughts?

 

[giarc00007]

It sounds like there's a lack of oxygen with the case on, loads when off! .. I'm not familiar with the boiler you mention but the symptoms point to oxygen starvation first thoughts?

im not familiar either with these lovely boilers. i know not many people have anything good to say about them though. just thought by getting 20.6 reading at air port would that not prove seals are ok?

 

[diamondgas]

Is it a 'basic' boiler... pre condensing or pre premix burner? Air intake blocked? If the fga is fine 'off' but not 'on' then the things you alter, case off, are flue flow and what's available pre-aeration.. imo

 

[Ermintrude]

Fan collar or top of hood leaking? Ivy in dirty side?

 

[giarc00007]

Is it a 'basic' boiler... pre condensing or pre premix burner? Air intake blocked? If the fga is fine 'off' but not 'on' then the things you alter, case off, are flue flow and what's available pre-aeration.. imo

its a new condensing premix burner. customer says boiler is only about 16 months old. would still be under warranty but whoever fit boiler either forgot to register or isnt gas safe:6: sometimes i wish i knew what i was going into.

 

[giarc00007]

Fan collar or top of hood leaking? Ivy in dirty side?

do you work on many biasi's ermintrude?

 

[aggis]

I believe Biasi boilers require the burner gasket to be changed every 2 years, or when removing the burner.
Recently had one with high readings, the inner burner seal had gone, between the burner & flange.
You definatelly need the instructions because some of the Biasi boilers req' the offset, setting 1st.