the burner is set to air number 4.5 and flame is very yellow and the plates in boiler are warped is it running to hot if so is there to much air in the mix
replace the plates and get it serviced by an oftec techician save your self money
3
martin
May 2009
The flame will always be yellow - but not so much so that there is visible smoke. Warped baffles are also common so no clues there......if the burner was unhappy before there will be considerable soot build up in the firebox and baffles. Too much air could make ignition difficult and also makes the flame impinge on the boiler itself - both undesirable! Try opening the air door just a fraction - but make a note of where it originally was. Setting these things up is a balance between pump pressure (150 psi approx), nozzle condition, and air inlet. Ideally we look for 12% CO2 but that isn't any help without a gas analyser!
John
May 2009
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