staybolt wrote:I have a k2 boiler and have the the small dayton axial fan attached to the inlet of the main combustion fan. had it on there for 6years now with no problems. i wired it to run ALL the time with main fan in the burner circut. I just attached fan with some rtv to the inlet of combustion fan and let dry. maybe will up load some pics. let me know. Guy
the axial fan will keep the coal bed red with almost no flames off of it, just a little air is all you need, not much.
Interesting idea, I would like to see a picture of it.
I hope you don't mind a couple questions to better understand your set up--
The combustion blower has an adjustable round plate on its inlet to regulate the volume of air supplied to the grate ---
Question 1 - With your axial fan setup, How open/closed do you have the blower inlet plate?
Question 2 - What setting do you use for the stoker? [i.e. turns in/out of the feed screw]
Question 3 - Upon a call for heat, How long does it take for the boiler water temperature to recover to its normal high temperature setting?
Question 4 - What is your flue gas temperature when the boiler is stoking at full fire? [and do you use an internal probe thermometer, or an external pipe thermometer]