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northernmainecoal
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Post by northernmainecoal » Sat. Mar. 28, 2015 5:13 pm

I didn't have any crazy draft readings when it wasn't windy so I'm not sure if it's going to have tamed it or not. I hope it will. right now it's running 200 on the barrel both primaries cracked 1/16" one mpd fully closed and mano is at -.02


 
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Lightning
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Post by Lightning » Sat. Mar. 28, 2015 5:18 pm

northernmainecoal wrote:I'm afraid at this point it won't be until next season before we really know the results.
Right.. Running it full bore, while it's cold out to boot, and windy on top of that, will have a dramatic different outcome on mano readings.. :)

 
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Post by KingCoal » Sat. Mar. 28, 2015 5:32 pm

i'll be very surprised if he doesn't still have the same atomic leaf vac above the MPD's

But, if the stove is considerably tighter now, the MPD's will have just as much more ability to limit the neg. pressure on the stove.

Rob, is your weather so seriously abated that you don't see running the stove in the 300's again this yr ?

steve

 
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northernmainecoal
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Post by northernmainecoal » Sat. Mar. 28, 2015 5:48 pm

KingCoal wrote:i'll be very surprised if he doesn't still have the same atomic leaf vac above the MPD's

But, if the stove is considerably tighter now, the MPD's will have just as much more ability to limit the neg. pressure on the stove.

Rob, is your weather so seriously abated that you don't see running the stove in the 300's again this yr ?

steve
I hope it is, but who knows. Going to be 8* tonight and after that in the mid 30s daytime and high teens for the low this coming week.

Like you, I'm only expecting to only see a marginal improvement in the atomic leaf vac from this fix but if I'm wrong ill be happy. Id prefer to have to wait until next winter to find out for sure but the way the weather has been this year that may not happen

 
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Post by Sunny Boy » Sat. Mar. 28, 2015 5:57 pm

Those are perfect temps to see what affect sealing air leaks before the grates has on your previous numbers.

Paul

 
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Post by KingCoal » Sat. Mar. 28, 2015 6:03 pm

the physics of your chimney are set, there will always be exceptional natural draft and frankly that's a good thing, plenty of people wish they had more to work with.

the real story has always been how much it can be controlled and how consistent you can hold the neg. pressure the stove experiences during the most adverse conditions.

that's why closing up both the lower and upper leaks really is important. when you have a stove that is tight everywhere but the adjustable intake ports and you close the MPD's against chimney over draft the stove draft will hold down in the economy range, like it is now.

 
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northernmainecoal
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Post by northernmainecoal » Sat. Mar. 28, 2015 6:29 pm

Sunny Boy wrote:Those are perfect temps to see what affect sealing air leaks before the grates has on your previous numbers.

Paul
what numbers would you like to know? what do you think is the best way to show the effect given the currrent conditions?
KingCoal wrote:the physics of your chimney are set, there will always be exceptional natural draft and frankly that's a good thing, plenty of people wish they had more to work with.

the real story has always been how much it can be controlled and how consistent you can hold the neg. pressure the stove experiences during the most adverse conditions.

that's why closing up both the lower and upper leaks really is important. when you have a stove that is tight everywhere but the adjustable intake ports and you close the MPD's against chimney
over draft the stove draft will hold down in the economy range, like it is now.
I agree with you 100% being completely air tight is very important and crucial to the efficiency of the stove. I'm afraid, as I suspect you are, no matter how tight the stove is I won't have the kind of control over the draft I need in extreme conditions. Might as well put it through the paces in this mild weather and wait and see what happens when things get shitty again next year


 
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Post by KingCoal » Sat. Mar. 28, 2015 6:47 pm

northernmainecoal wrote:
I agree with you 100% being completely air tight is very important and crucial to the efficiency of the stove. I'm afraid, as I suspect you are, no matter how tight the stove is I won't have the kind of control over the draft I need in extreme conditions. Might as well put it through the paces in this mild weather and wait and see what happens when things get shitty again next year
i myself am very confident that you WILL have the control you are hoping for.

it's the soda straw or garden hose illustration. take a straw and apply suction, it'll pass a considerable amount of free air. now, pinch the bottom of the straw, you can pull on that thing till your chest caves in, only so much air is going to come past the obstruction.

in your case you will have obstructions to use both in the smoke pipe and with the adjustable air ports.

 
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Post by McGiever » Fri. Apr. 03, 2015 9:33 am

rob, Any plan to add the lacking radiation that is missing from the EFM 520 boiler system?

 
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Post by northernmainecoal » Fri. Apr. 03, 2015 10:04 am

McGiever wrote:rob, Any plan to add the lacking radiation that is missing from the EFM 520 boiler system?
Nothing immediate but I do plan on it. I’ve been searching for some old radiators but have missed out on any that I have found thus far. Eventually I’ll find the right deal and start that project. In addition to the radiators I also plan to add in some more fin tube where they just ran pipe behind the baseboard covers

 
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Post by northernmainecoal » Thu. Oct. 29, 2015 4:00 pm

It's been a busy summer/fall, didn't get as much done as I would have liked. Started a new job a couple months ago and have even less time now.

I do believe I have all of the underfire leaks sealed up, there was a pretty big gap along the bottom of the ash pan door that is now closed up. Any remaining air gaps are above the fire. I moved the MPD that was closest to the chimney thimble as close to the stove as I could get it. Now I'm trying to decide if I should replace the MPD I moved or stick with two and see how the change in location effects the draft.

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Post by UncleDoDat » Fri. Nov. 06, 2015 3:17 am

northernmainecoal wrote:It's been a busy summer/fall, didn't get as much done as I would have liked. Started a new job a couple months ago and have even less time now.

I do believe I have all of the underfire leaks sealed up, there was a pretty big gap along the bottom of the ash pan door that is now closed up. Any remaining air gaps are above the fire. I moved the MPD that was closest to the chimney thimble as close to the stove as I could get it. Now I'm trying to decide if I should replace the MPD I moved or stick with two and see how the change in location effects the draft.
curious to know how a man-o-meter with work inside a double MPD. Furthermore where would you put it with the man-o-meter?

 
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Post by northernmainecoal » Wed. Nov. 11, 2015 7:33 am

The mano is placed closest to the stove and then all the MPDs are placed after that. I will be adding in a third MPD, while it wasn't that cold over last weekend it was windy and even with both MPDs fully closed I wasn't able to keep the draft at a reasonable number :/

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Post by coalnewbie » Wed. Nov. 11, 2015 7:41 am

I agree with you 100% being completely air tight is very important and crucial to the efficiency of the stove
Not so.

 
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Post by northernmainecoal » Wed. Nov. 11, 2015 8:48 am

coalnewbie wrote:
I agree with you 100% being completely air tight is very important and crucial to the efficiency of the stove
Not so.
??


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