Riello oil burners

Steve Thomas (Foley Mechanical)

Im having an intermittent problem with a Buderus boiler that has a Riello burner. Its shutting down every three weeks or so. During my last visit the boiler and flue were cold when I fired it up. I had smooth ignition. After the boiler and chimney were hot I shut it down and restarted. the result was very hard ignition. The chimney has a very strong draft. Im thinking of putting another barometric damper on the flue. The barometric damper is wide open after the chimney is hot. Ive talked to people who say that Riello electrodes should be set 316 apart. Ive also talked to people who say that I should set my over the fire draft at 0. The factory wants a +1-2 over the fire.

Any advice would be greatly appreciated

Robert O'Connor

In my experience, Riello's seem to like slightly positive presure over the fire.

Electrodes are critical of course . What is your co 2 reading?

Regards,

Robert O'Connor

Steve Eayrs

Is the burner tube inserted

> Im having an intermittent problem with a Buderus

> boiler that has a Riello burner. Its shutting

> down every three weeks or so. During my last

> visit the boiler and flue were cold when I fired

> it up. I had smooth ignition. After the boiler

> and chimney were hot I shut it down and

> restarted. the result was very hard ignition.

> The chimney has a very strong draft. Im thinking

> of putting another barometric damper on the flue.

> The barometric damper is wide open after the

> chimney is hot. Ive talked to people who say

> that Riello electrodes should be set 316 apart.

> Ive also talked to people who say that I should

> set my over the fire draft at 0. The factory

> wants a +1-2 over the fire.

>

> Any advice would

> be greatly appreciated

Steve Eayrs

I have seen a couple Reillo/Buderus

packages come with wrong length burner tube. And a few years ago they were advising that the tube should be shoved farther into the combustion chamber. Which ended up being mis-information, and everything worked good when finally adjusted right.
Sorry..I can' remember the measurements, but remember it greatly affected the draft.
Sounds like you could also be geting too much air, and blowing the flame out. I have never seem where I have had to add a second barometric, and have installed over 150 of the Buderus/Reillo boilers. Most of them the 115-28's and 34's, stacked on the LT horizonal tanks. In oil fired they are a great combination.

Steve

Steve Thomas (Foley Mechanical)

thank you

John G. Merritt

Riello Oil Burners

Most Riellos use a 60 degree nozzle, solid cone. The Ignitors can be set as much as 5/8 of an inch.
Sounds like it could be a Nozzle problem.
Hope this helps.

John

Tim_12

Steve,
is this a BF Riello?? I have encountered in the past couple of months a similar problem, I talked with Bill from Riello and this was the end result, Check the solinoid valve on the fuel pump they usually have a bearing inside them and if you do not hear it moving (with it off) shaking it then you have found your problem, The ones I had actually sooted!! also check the pump psi per your book and the correct nozzel size and if it is a special nozzle "W" then I would use that very one!!

Good Luck!!