Manometer all over the place

Re: Manometer all over the place

PostBy: ihatewood On: Mon Oct 29, 2012 8:06 pm

Yes its set at 6 and not moving is this normal.
ihatewood
 
Stove/Furnace Make: Harmon Magnum stoker

Re: Manometer all over the place

PostBy: freetown fred On: Mon Oct 29, 2012 8:11 pm

What are you trying to say? ;)
freetown fred
 
Hand Fed Coal Stove: HITZER 50-93
Coal Size/Type: BLASCHAK Nut/Stove mix

Re: Manometer all over the place

PostBy: Lightning On: Mon Oct 29, 2012 8:13 pm

I don't know what is optimum for your stove, but most have their baro set so that it starts to open as it climbs above a 0.02 on the mano. Hopefully someone will chime in with more information.
Lightning
 
Hand Fed Coal Furnace: Clayton 1537G
Coal Size/Type: Nut/Stove Size Mix


Re: Manometer all over the place

PostBy: ihatewood On: Mon Oct 29, 2012 8:18 pm

Harmon suggests setting baro to maintain -04to -06 inches of water column
ihatewood
 
Stove/Furnace Make: Harmon Magnum stoker

Re: Manometer all over the place

PostBy: ihatewood On: Mon Oct 29, 2012 8:21 pm

I guess this reading would be fine then.
ihatewood
 
Stove/Furnace Make: Harmon Magnum stoker

Re: Manometer all over the place

PostBy: WNYRob On: Mon Oct 29, 2012 10:57 pm

Right now, we have about 40 mph gusts and my chimney (17' steel) always has a good draft regardless of wind speed. My damper is just swinging away while quite often being pegged wide open for a few seconds at a time. Kokers like a draft of about .025 and the damper is keeping mine between about .02 and .035. While my firebox was burning about 300 degrees, my flue temp was about 110, most of the air in my chimney was being drawn through the damper and not through the stove's firebox. To me, this is an example of a properly functioning damper.
WNYRob
 
Hot Air Coal Stoker Stove: Keystoker Koker controlled with CoalTrol

Re: Manometer all over the place

PostBy: vulcan On: Mon Oct 29, 2012 11:46 pm

I was interested to see how my direct vent koker would handle this wind and so far its been very steady on the magnehelic at right about .02 with almost no variance. This is my first year for coal so I wasn't sure what to expect.
vulcan
 
Hot Air Coal Stoker Stove: keystoker koker 160

Re: Manometer all over the place

PostBy: rberq On: Tue Oct 30, 2012 7:14 am

ihatewood wrote:Yes its set at 6 and not moving is this normal.

Don't worry about the brief fluctuations in gusty winds. The baro is a mechanical device and does not respond instantaneously.

Also, the baro calibration marks are just a rough reference, not a precise setting. Adjust the baro to give the desired manometer reading, since the manometer IS more of a precision device. If your target is .05, and the manometer says .05, then you are good regardless of which mark the baro weight is at.

If there is a BIG discrepancy between the baro setting and the manometer reading, then you might have other issues such as a deficient or too-efficient chimney, improperly placed baro, improperly place manometer, etc. etc. If so it's probably best to address that in a new thread.
rberq
 
Hand Fed Coal Stove: DS Machine 1300
Coal Size/Type: Nut -- Kimmel/Blaschak/Reading
Other Heating: Oil hot water radiators, propane

Re: Manometer all over the place

PostBy: lsayre On: Tue Oct 30, 2012 7:35 am

ihatewood wrote:Yes its set at 6 and not moving is this normal.


With that setting it would be normal for the baro damper to be steadily closed if your manometer is steadily reading something less than 0.06". Now if it is set at 6 and it's not moving because it's stuck wide open, and your manometer is reading less than 0.06" that would be a major concern.
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Anthracite Pea
Other Heating: Resistance Boiler (It has been fixed!)