I have a new Thermodynamics boiler installed last year. It has a new Beckett Burner on it with clean cut shut off on the pump. I’m looking at running either Bio-Diesel (home brew) or using WVO. Leaning more toward WVO, because less processing involved, but looks like more modification needed to run. So here are my questions:

1. Nozzle type. I experimented with the original nozzle in the burner, and it would not ignite with SVO. It would start with HHO, and could change to SVO and maintain burn, but it wasn’t happy (too thick still, not hot). First of all, if I were to burn WVO, would I have to change over to syphion nozzle, or could I just keep the OEM one and heat the oil. Which is best?
2. Heating the Oil – what is the max temp that the pump can take for oil being supplied to it? Is there a limit, if so how hot?
3. How much air will the syphion nozzle need to stay running? Will it require a three phase compressor running night and day, or just a little one purring along?

There are several people using or experimenting with biodiesel at the moment in their oil burners and quite a few more interested in this process. Maybe some of them will weight in with some info for you. I don’t use biodiesel, I run wvo in my oil heat heater and use band heaters to heat the oil to around 300 degrees before it gets to the standard nozzle. That seems to so the trick but I still have not worked out some clogging issues, so I have to clean the nozzle every weekend. It’s something I’m still working on while I build my siphon nozzle oil burner.

I don’t know which is best, but it appears at this point that the siphon nozzle setup may be more maintenance free. It seems that several members are using heated wvo with a siphon nozzle setup. I haven’t heard feedback on how that’s going. I think this winter will give this group some great info on biodiesel and wvo/wmo usage so stay tuned. No, you don’t need a lot of pressure to operate a siphon nozzle oil burner. Between 5 and 15 psi at 2-4 cfm should do it. A little one should do it, but be cautious: get a full duty air compressor, not a bike tire pump if you live in an area where the heat from your furnace will be in constant or high demand.[/q]