baro damper setting

I am sure this is in the forum somewhere but I got tired of looking. I have a LL Pioneer and I need to know what to set the barometric damper at? I will be using a manometer to measure the draft.

thanks for any info!!

PS maybe Jerry could put this info on his website?

For most coal appliances .06 is the maximum draft allowed. You should use what the manufacturer suggests, which should be in the unit's directions.

Hi Gambler,
We always recommend a -.02 at low, to .05 at high. With everything taken into consideration, setting the weight on 2/3 will be a real good starting point. Make sure the stove and chimney are at operating temp. for a few hrs. This is very important for a proper setting.
Good luck,
Jerry

Jerry,
I was told to set mine all the way to the left once the chimney is up to temp. You make um, so 2/3 must be the correct setting. Can you briefly explain what is going on at full vice 2/3.
thanks

Phil,
If you set the barometric flap too lite, when you start to get a build up of fly ash in the pipe, the draft is reduced because the size of the pipe opening is reduced. Now, the baro will still open the same, because it's set too lite, and the draft to the stove will be reduced to near nothing. The secret is to draw from the stove, but not to much, leaving the heat in the steel body as long as possible. I have stated this before but it's worth repeating. When sweat is visible on the bottom side of the hopper lid, you will soon have a draft problem. The heat and gases inside the stove can no longer be drawn up the pipe, so they need a way to get out of the stove. The feeder or hopper will work just fine for gases to escape, but not what we want. This can be caused by a faulty baro, or faulty setting. With a LL we recommand 2/3 on the weight.
Jer

Can you cl;arify by what you mean when say a setting of 2/3?

I just got a new damper and it is number with 2,4,6,8 with the 2 being all the way to the left. Are you saying to set it at 2 or 3 or two thirds to the right?

thanks

2,4,6 I think they are the .02, .04, etc.. draft settings. I have mine around the 2-4 mark and it seems to be maintaining the stove around .04 draft. May have to adjust slightly when it gets colder and it draws better.

Just make sure you have on the correct slot (if it has 2 different slots) One is for Horiz install and the other is for Vertical.

Jerry, am I reading your suggested manometer settings right? The low setting could be a negative -.02 and the high could be a positive +.05. That seems like quite a spred. Is that correct? I just purchased a LL hearth and I do have a monometer installed and I want to be sure to get the right draft settings. Thanks to you and your wife, you have always been very helpful.

Bob

Bob,
That's a -02 to a -05. Never on the positive side.
Jerry

We always recommend a -.02 at low, to .05 at high.

It was a typo, Jerry missed the - that goes before the .05.

Remember-the marks on the baro are approximate. You should check the actual draft with a manometer to be certain.

Also, in another thread, many of us hook up the Manometer to READ on the POSITIVE scale (larger), but you are actually reading a Vacuum or NEGATIVE pressure in the stove. You just have to switch the LOW/HIGH side of the Manometer tube.

I'm confused. For example , what does a baro setting of 3 really mean? Does it mean that the draft measured between Baro damper and stove outlet will be approx: -0.03 w.c. as measured with a manometer?

Where is the right place to measure the draft and with what manometer? Dwyer model 25 ok ? If measuring above Baro would reading be positive? Please help.

HI Major, there are a lot of threads on the topic of manometers.. lots to read..

The quick answer is you want to measure the draft in the flue pipe above the stove, below the barometric damper..

And yes, the '3' setting on the sliding weight scale means that it will be approximately a -.03"wc . But the scale is often way off, us a manometer.

Hope this helps. Read in the 'Venting, chimneys etc' forum and on the 'Anthracite news' forum about Manometer.

Greg L