Ok, that explains why your getting an increase in mano reading when most of us are using the Dwyer and plumbed into the "low" port, which reads negative pressure.ReidH wrote: ↑Sat. May. 15, 2021 1:52 pmI am using a -0.05 - 0 - +0.20 magnehelic manometer. It is plumbed to read on the positive side of the scale.
It is zero or thereabouts with no fire. When I fired up with wood and tested , the draft crept up to 0.04. Switching from direct to indirect changed that value to 0.05.
Just finished my Christmas shopping today. 20 bags of black shiny rocks.
Merry Christmas,... now fire that beauty up and lets see what it can do.
Paul