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Author Topic: "Draft"  (Read 590 times)

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Offline Viperman

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« on: February 20, 2019, 12:30:00 AM »
I've heard people refer to there OWB's being at a 20% draft.  The one I heard mention was a Heatmaster MF5000e.  Is there a draft control on these? and where is it.

Offline uplander

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Re: "Draft"
« Reply #1 on: February 20, 2019, 12:08:15 PM »
 It's usually measured in inches (or parts there of) of water column vacuum most of the time with a manometer that you hook up to your flue.
  Google "Dwyer Manometer"
Woodmizer lt40G28.  A kubota L4600 with loader and forks.
Various Stihl saws and not enough time to use them!
 Finished my house finally. Completely sawn out on by band mill. It took me 7 years but was worth it. Hardest thing I have ever done.

Offline thecfarm

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Re: "Draft"
« Reply #2 on: February 20, 2019, 01:54:47 PM »
I have a Heatmor. Mine does not have a natural draft. Open the door and the smoke comes out. That is why I can burn dead wood in mine and have a controlled fire. When the fans are not running the fire is smothered out.
Model 6020-20hp Manual Thomas bandsaw,TC40A 4wd 40 hp New Holland tractor, 450 Norse Winch, Heatmor 400 OWB,YCC 1978-79

Offline E Yoder

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Re: "Draft"
« Reply #3 on: February 21, 2019, 10:45:52 AM »
The Heatmaster MF models have a manual damper so you can adjust the volume of airflow. It still cycles on and off with the solenoid flap and fan.
20% sounds very low though, I'd think it would be close to making creosote.
HeatMaster dealer in VA.

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