Nozzles on Kerosene oil boilers

[andyr123]

Hello - we have a Grant Euroflame 70-90 outdoor kerosene condensing boiler which has a Reillo RDB 2.2 Burner. whilst I was cleaning it out of soot inside the other day I got a magnifying glass and had a look what was stamped on the Danfoss nozzle jet and it said 60's - now the specs for a Euroflame states the original factory fitted Nozzle is 80'EH - any reason why the installer whipped the factory default nozzle out and put a 60's nozzle in its place?

I know the difference between a 60's and 80'EH is different spray pattern and width of spray pattern - but still wondering why the installer would have put a 60'S nozzle in there - the 3 nozzles listed for the 70-90 boiler are all 80'EH just different kg/h figure

Thanks for any advice.

 

[oilhead]

How long has it been running with a 60 degree nozzle? How long is it since installation/last service? This could explain the soot.

 

[andyr123]

How long has it been running with a 60 degree nozzle? How long is it since installation/last service? This could explain the soot.

Thanks for the reply. Yeah so we moved in December 2016 and started using it - the boiler was installed in 2012 I think it had written on it - houses have been empty for years so it was never used (i suppose the installer would have had to run it to commission it or whatever its called) - its always smelt pretty 'fumey' out of the flue especially in winter, so I dont know whether this is down to different nozzle used

 

[Burnerman]

Go for the original nozzle recommendation - the spray pattern (Extra Hollow in this case is important to prevent soot build up.)
The first figure on the nozzle determines the volume of kero that the nozzle can provide in GPH - equally important.
A flue gas analysis after the work is done will indicate how efficiently the boiler is performing .
John

 

[andyr123]

Go for the original nozzle recommendation - the spray pattern (Extra Hollow in this case is important to prevent soot build up.)
The first figure on the nozzle determines the volume of kero that the nozzle can provide in GPH - equally important.
A flue gas analysis after the work is done will indicate how efficiently the boiler is performing .
John

Thanks - the 60's that is in the boiler presently is stamped with 2.37kg/h so i dont really know what that works out in G/PH - but the standard one that is supposed to be fitted is 80'EH is 0.65 and 1.95kg/h

I could easily order a 80'EH 0.65 Nozzle off ebay for peanuts and they are readily available - what if i were to buy one off ebay and give it to installer , ask him to fit it, then adjust the pressure to correct setting, and air damper/smoke test to the correct setting and flue temp to the correct setting would they do this .. or do installers like to supply their own nozzles and fit them?

 

[Burnerman]

I think any oil engineer would want to check the appliance over at the same time, which as well as the cleaning - done by yourself - he'd maybe check the electrode settings and condition, clean out the blast tube, renew any tank filters or whatever.
After that, he'd do a smoke test and then a flue gas analysis, adjusting pump pressure and air door setting as necessary.
Do have a look at the Danfoss nozzle website - loads of valuable info on there!
John

 

[Terrywookfit]

Go for the original nozzle recommendation - the spray pattern (Extra Hollow in this case is important to prevent soot build up.)
The first figure on the nozzle determines the volume of kero that the nozzle can provide in GPH - equally important.
A flue gas analysis after the work is done will indicate how efficiently the boiler is performing .
John [/QUOTE

The E in the EH denotes that the nozzle is designed for use with Kerosene. ( Not Extra ).