Blower speed

[mrxswe]

Hi
I have some questions regarding blower settings.
I have 16-20 kW burner and it´s set to run 3-16 kW, the fan is FL085.
How low can I go with the blower speed at 10% power.
Just now I am at
Speed at 10 % power = 13 
Speed at 50 % power = 20
Speed at 100 % power= 30
I have o2 control and adjusted with instrument to correct values.

[Leif P]

It depends on which herd you have in and the surroundings
I have a sommer herd, with only holes in the bottom, in a 1 to 10 kw burner, and i go down to 8% on the blower (flo85)

[mrxswe]

I have the 16-20 kw herd.

[Leif P]

I found out that with my herd, it could come down to 8 %, and not more, and then have adjusted to 1,1 kw with the pellets i use now, because 7 % is too unstable for the flo85
If it is a 16-20 kw standard herd or an open herd, it is just to see how low it can be without smoke.
I normally use 1,5 hours on checking 10% power after last adjutment, because it is the most importend thing for a pellet burner to run smoothly 

[mrxswe]

I only have some white smoke from the chimney. The humidity is quite high her in south of Sweden and the problem for me is the wind. Then is windy outside my draft stabilizer is not enough. I’m going to by a new one in December. So then the wind is high my o2 control will increase the pellet feed about 10-15 %, so that I think is due to high draft thru the boiler. 

[Leif P]

I know the problem with the wind, and therefore have two draft stabilizer. I even cut off some of the nuts to get them easier to move
Now it is working really fine.