MKII Limits

Re: MKII Limits

PostBy: Wood'nCoal On: Sat Dec 14, 2013 10:55 pm

Post pictures of the stove and breech please!!
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: MKII Limits

PostBy: franco b On: Sat Dec 14, 2013 11:03 pm

Lightning wrote:
franco b wrote:Before baro is between the stove and baro and after baro is between the baro and chimney, if I understand it correctly.


I've taken measurements before and after baro and they were always the same. :? :lol:


Oh God he underlined always. Is a puzzlement.

Before the baro draft is being diverted by the open flap of the baro. After the baro that diluted air in the pipe should lessen the draft there too, but if the chimney is large enough to handle that increased volume of air and draft strong enough then i could see it being higher. The size of the smoke pipe is a limiting factor close to the stove, but closer to the chimney it will be less of a limit.

Having said all that I can't remember ever measuring before and after the baro so it is just what seems reasonable to me as an explanation and could be all wrong.
franco b
 
Hand Fed Coal Stove: V ermont Castings 2310, Franco Belge 262
Baseburners & Antiques: Glenwood Modern Oak 114
Coal Size/Type: nut and pea

Re: MKII Limits

PostBy: scalabro On: Sat Dec 14, 2013 11:04 pm

Wood'nCoal wrote:Post pictures of the stove and breech please!!



Pics on this thread;


Hello!
scalabro
 
Baseburners & Antiques: Crawford 40, PP Stewart No. 14 in the works.
Coal Size/Type: Stove, Anthracite.
Other Heating: Oil fired, forced hot air.

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Re: MKII Limits

PostBy: scalabro On: Sat Dec 14, 2013 11:08 pm

franco b wrote:
Lightning wrote:
franco b wrote:Before baro is between the stove and baro and after baro is between the baro and chimney, if I understand it correctly.


I've taken measurements before and after baro and they were always the same. :? :lol:


Oh God he underlined always. Is a puzzlement.

Before the baro draft is being diverted by the open flap of the baro. After the baro that diluted air in the pipe should lessen the draft there too, but if the chimney is large enough to handle that increased volume of air and draft strong enough then i could see it being higher. The size of the smoke pipe is a limiting factor close to the stove, but closer to the chimney it will be less of a limit.

Having said all that I can't remember ever measuring before and after the baro so it is just what seems reasonable to me as an explanation and could be all wrong.



Don't want the thread to drift but what is difficult here?

The draft earlier today before the baro (stove side) was .05wc, after the baro (chimney side) was.08 .

Am I missing something?...I am new to this.
scalabro
 
Baseburners & Antiques: Crawford 40, PP Stewart No. 14 in the works.
Coal Size/Type: Stove, Anthracite.
Other Heating: Oil fired, forced hot air.

Re: MKII Limits

PostBy: Cap On: Sat Dec 14, 2013 11:09 pm

Hey Gekko. Foil your baro. With this cold air you are simply adding air into your flue and slowing down draft thus slowing your burn. With a stove as tight as a Harman 2, use the damper to control draft and burn rate. You will see better heat control without that baro slowing the flue draft.

I foil my baro. Been doing so all season and last. When I do use it, it simply requires more turns on the damper to make up for lost draft. I use a Harman too.
Cap
 
Hand Fed Coal Boiler: Harman SF 250, domestic hot water loop, heat accumulator

Re: MKII Limits

PostBy: Wood'nCoal On: Sat Dec 14, 2013 11:15 pm

Proof that I don't read every thread!!
How are you testing the draft? The after baro draft is basically meaningless, the draft between the baro and the stove outlet is what matters.
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: MKII Limits

PostBy: scalabro On: Sat Dec 14, 2013 11:22 pm

Wood'nCoal wrote:Proof that I don't read every thread!!
How are you testing the draft? The after baro draft is basically meaningless, the draft between the baro and the stove outlet is what matters.


With a Bacharach draft gauge via a hole in the pipe.

I measure the draft after the baro just to know what actual chimney draft is on any given day, that's all, just reference.

Its not meaningless, knowing it can help t shoot a chimney problem.
scalabro
 
Baseburners & Antiques: Crawford 40, PP Stewart No. 14 in the works.
Coal Size/Type: Stove, Anthracite.
Other Heating: Oil fired, forced hot air.

Re: MKII Limits

PostBy: Cap On: Sat Dec 14, 2013 11:23 pm

Wood'nCoal wrote:Proof that I don't read every thread!!
How are you testing the draft? The after baro draft is basically meaningless, the draft between the baro and the stove outlet is what matters.


Pressure in a 6" or 8" pipe that low will equalize before or after.
Cap
 
Hand Fed Coal Boiler: Harman SF 250, domestic hot water loop, heat accumulator

Re: MKII Limits

PostBy: scalabro On: Sat Dec 14, 2013 11:28 pm

Cap wrote:
Wood'nCoal wrote:Proof that I don't read every thread!!
How are you testing the draft? The after baro draft is basically meaningless, the draft between the baro and the stove outlet is what matters.


Pressure in a 6" or 8" pipe that low will equalize before or after.


Don't really understand that as its impossible...lol!
scalabro
 
Baseburners & Antiques: Crawford 40, PP Stewart No. 14 in the works.
Coal Size/Type: Stove, Anthracite.
Other Heating: Oil fired, forced hot air.

Re: MKII Limits

PostBy: Lightning On: Sat Dec 14, 2013 11:29 pm

franco b wrote:Oh God he underlined always. Is a puzzlement.

A what? :lol:

Gekko wrote:The draft earlier today before the baro (stove side) was .05wc, after the baro (chimney side) was.08 .

Yes this doesn't make sense to me... :lol: The reading has always been the same for me on each side of the baro.. Not trying to derail yer thread. Just curious.. :D Stove side where?

Wood'nCoal wrote:The after baro draft is basically meaningless, the draft between the baro and the stove outlet is what matters.

:up:

Gekko wrote:I measure the draft after the baro just to know what actual chimney draft is on any given day, that's all, just reference.

This will only work if you hold the baro door shut..
Lightning
 
Hand Fed Coal Furnace: Clayton 1537G
Coal Size/Type: Nut/Stove Size Mix

Re: MKII Limits

PostBy: scalabro On: Sat Dec 14, 2013 11:32 pm

Lightning wrote:
franco b wrote:Oh God he underlined always. Is a puzzlement.

A what? :lol:

Gekko wrote:The draft earlier today before the baro (stove side) was .05wc, after the baro (chimney side) was.08 .

Yes this doesn't make sense to me... :lol: The reading has always been the same for me on each side of the baro.. Not trying to derail yer thread. Just curious.. :D Stove side where?

Wood'nCoal wrote:The after baro draft is basically meaningless, the draft between the baro and the stove outlet is what matters.

:up:

Gekko wrote:I measure the draft after the baro just to know what actual chimney draft is on any given day, that's all, just reference.

This will only work if you hold the baro door shut..



I must be in another parallel universe then!

This is with the baro open and functioning, please re read my first post.

Draft on stove side .05

Draft on chimney side .08

Makes no difference, I 've come to the conclusion I need a huge Base Burner. :mrgreen:

I'm out!
Last edited by scalabro on Sat Dec 14, 2013 11:36 pm, edited 1 time in total.
scalabro
 
Baseburners & Antiques: Crawford 40, PP Stewart No. 14 in the works.
Coal Size/Type: Stove, Anthracite.
Other Heating: Oil fired, forced hot air.

Re: MKII Limits

PostBy: Wood'nCoal On: Sat Dec 14, 2013 11:35 pm

Gekko wrote:
Wood'nCoal wrote:Proof that I don't read every thread!!
How are you testing the draft? The after baro draft is basically meaningless, the draft between the baro and the stove outlet is what matters.


With a Bacharach draft gauge via a hole in the pipe.

I measure the draft after the baro just to know what actual chimney draft is on any given day, that's all, just reference.

Its not meaningless, knowing it can help t shoot a chimney problem.


Agreed and understood. :D
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: MKII Limits

PostBy: franco b On: Sat Dec 14, 2013 11:45 pm

Measuring the draft directly opposite the baro might not give a correct reading. There is not enough room between the stove and baro to get a reading before the baro. If it is true that reading before or after should be the same then you have been running at .08 and not .05 because the higher reading is far enough away from the baro to read true.

If this is so it could explain your problem.
franco b
 
Hand Fed Coal Stove: V ermont Castings 2310, Franco Belge 262
Baseburners & Antiques: Glenwood Modern Oak 114
Coal Size/Type: nut and pea

Re: MKII Limits

PostBy: Cap On: Sat Dec 14, 2013 11:46 pm

I am heating a 2400 sf + a full basement with my Harman at 50% firebox using my method. It's not impossible. I can provide pics with temps.
Cap
 
Hand Fed Coal Boiler: Harman SF 250, domestic hot water loop, heat accumulator

Re: MKII Limits

PostBy: snuffy On: Sat Dec 14, 2013 11:46 pm

Gekko,

I have a similar amount of SF. I 1st purchased a MARK III and zoomed through 5+ tons the 1st and 2nd year. I then purchased a Harman SF 250 and it seems I'm going through less coal but gaining more heat. I think it has to do with the mass of the stove itself. I heat the basement with a full open basement with (2) 7'X9' garage doors facing the North/North West and the entire 1,800 SF second floor. Main living area open floor plan stays a toasty 74-75 and the back bedroom furthest away and rather isolated keeps at about 70 degrees. Granted I have good insulation R30 ceiling and R25 walls but this SF250 seems to be doing the trick.
Snuffy
snuffy
 
Hand Fed Coal Stove: Harman SF250 & Mark III backup
Other Heating: Oil Hot Water

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