just got a new grunfos oil pump for my worcester heatslave oil fired boiler cos after 20 mins or running the oil pump seems to start whurring /whinning(its 12 yrs old).I've listened through a screwdriver and thats where it is coming from.Can i just bolt the new one on or does it need setting up ?

you should be ok as long as the boiler has been serviced recently. its the injector that controls oil flow. if its not been serviced recently get your local oftec registered engineer to service it and tell him about the pump first.

I'm not sure about the grundfos pumps but the suntec pump on my boiler is positive displacement and relies on adjusting the bypass valve to control the flow. There should be instructions with the new pump but if not you can usually find them online.

Duncan

I've borrowed the kit and set mine up as per the instructions in the past, but I've a friend who is a heating engineer specialising in oil and he told me he has never set a new pump up, just runs them as they come out the box with the factory settings.

If you are changing to a different make of pump the pressure may be slightly different. The mixture strength is varied by throttling the inlet to the centrifugal fan with a sliding plate arrangement. I believe there are instruments to measure the exhaust gas oxygen content but when I got mine set up the service engineer just increased the airflow untill it stopped smoking!!

My boiler was 10 years old and I ended up replacing most of the burner components within the next 6 months - wish I had bought a complete burner it would have been cheaper!

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Originally posted by v8kid
My boiler was 10 years old and I ended up replacing most of the burner components within the next 6 months - wish I had bought a complete burner it would have been cheaper!

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