Are You Designing Your System to Be Fail-Safe?

[SteveUnruh]

JO's wood boiler

Hi Thierry I was unsatisfied with my ejector fan as well. I had to make some changes to it. I narrowed down the air inlet slot by bending in tabs of the housing to increase the air velosity. Also, I added some hight to the tube. My thinking was the increased air velosity would make for better draft by creating a more powerful underpressure. It worked so-so. I used the fan last winter like that and it pulled about twice the natural draft. [20191105_171343] [20191105_161056] [20191105_1611…