My oil boiler is sooting up, i have a adjusting screw marked P(pressure) do i need to turn the screw to + or to the - to adjust i am burning lots of oil,
The bfp 11L3 pump is worn out and will need renewing. dont try and do this yourself, and leave the 'p' pressure adjuster alone...you need a very expensive flue gas analyser to calibrate the burner...or risk CO poisoning.
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