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Author Topic: fan damper  (Read 1469 times)

dutch

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fan damper
« on: January 19, 2017, 12:33:59 PM »

just kinda wondering how other users have the damper set on there bl 28-40 , i have always had it wide open, should it be set closed a little.
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Sloppy_Snood

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Re: fan damper
« Reply #1 on: January 20, 2017, 08:09:50 AM »

Depends... are you not getting good hot burns or not long enough burn times?
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Elguano

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Re: fan damper
« Reply #2 on: January 01, 2018, 06:38:05 PM »

Same question here, really a newbie at OWB, and was wondering if i should close the damper in the back of the fan, I get about 12 hrs if i stock the furnace enough, otherwise it would be a 8hr burn.
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Range91

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Re: fan damper
« Reply #3 on: January 02, 2018, 04:54:06 PM »

I run mine wide open and honestly believe could use a little more air. Stove burns pretty clean but always has some smoke unless I'm down to just a coal bed. If I open the door a crack when it's smoking under load it will clear right up and you can see all the smoke burning in the chamber. I'm heating around 3700sqft plus a 900 sqft garage and domestic water with crappy under ground pipe and can go 12hrs on 6-7 splits and a 10-12" round oak on cold days. 30 and above 4 or 5 splits is all. I keep my ash pretty low keep brick exposed quite a bit. I also blocked off 2 air passages at rear of stove with a plate and firebrick this helps keep more air under where I have the fire which is more in the front and also helps with more secondary air. I also clean my stove once a week religiously pulling all ash from upper heat exchanger and push it back into the firebox. I also scrape the creosote off the what I would call the ceiling of the upper heat exchanger with the supplied tool. I've seen some stoves on YouTube that guys open up and I think to myself how much wood they are wasting. This is what seems to be working good for me
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Range91

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Re: fan damper
« Reply #4 on: January 06, 2018, 06:39:07 AM »

6 degrees this morning.. This is a pic of a 12hr load from last night last pic is this mornings coal bed. One piece of red pine on the bottom rest is oak and beech
« Last Edit: January 06, 2018, 06:41:53 AM by Range91 »
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Elguano

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Re: fan damper
« Reply #5 on: January 07, 2018, 07:27:43 AM »

Yeah no something is definitely wrong with mine, I load it hard, and it will barely make 12 hrs. Ok was -13F or -25C Overnight. It's my first OWB and still trying to figure it out. I couldn't get my hands on oak logs tho, so i had to get tamarack and red pine. Got sold 15 face cord of splitted 16" hardwood, then been told that wouldn't cut it into this boiler, need round big logs (which i must admit is wayyyyyyyyyyy better than the small wood)

It's also the BL 34 44, but am heating a fairly new 3800SQ house (well insulated house), with a dual car garage and a guess house of 1200 Sq ft + a sidearm for HW. But i barely can last 12 hrs. I did setup a data logger to see when the water temp, and it drop every single night, I am thinking of a buffer tank maybe would help.

Trying to pin point what wrong, i run it at 190C and 178C to restart.

And if you look at the datalogging the probe is about 25F offset, been just taped on the valve to get my temperature reading.
« Last Edit: January 07, 2018, 07:32:25 AM by Elguano »
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hondaracer2oo4

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Re: fan damper
« Reply #6 on: January 07, 2018, 03:46:39 PM »

Data logging is great! Ok so there is only one day on your chart that doesnít have a drastic loss of temp for a while. I counted 25 cycles thst day running 178-190. Is thst right? With the specs for the boiler it has 120 galllons. To bring the water from 178-190 you create 12,672 btus. So if your boiler runs roughly 1 time per hour thst means your house is using 12,672 per hour. Thst is very reasonable!! I am using 22,000 btu per hour heating 2800 sqft with temps between -15 and 10 degrees. Your wood is the problem and the fact that you arenít using a gasser also increases wood usage. 
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d5knapp

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Re: fan damper
« Reply #7 on: January 08, 2018, 07:11:14 PM »

what kind of wood are you burning? sounds the like numbers add up.
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Elguano

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Re: fan damper
« Reply #8 on: January 09, 2018, 07:15:41 PM »

Tamarack and red pine (softwood) and kinda green too , not exactly sure when it was cut
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hondaracer2oo4

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Re: fan damper
« Reply #9 on: January 09, 2018, 09:03:03 PM »

And there's your high wood use.
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Elguano

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Re: fan damper
« Reply #10 on: January 11, 2018, 12:28:16 PM »

Thanks for the info :) Like i said, really new at running an OWB, I just ordered a truckload of maple for the end of the month, should have the time to season over the summer, should I split it? or Just cut it into 24" Round Logs would do the job?
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hondaracer2oo4

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Re: fan damper
« Reply #11 on: January 11, 2018, 12:29:19 PM »

Green maple?
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Elguano

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Re: fan damper
« Reply #12 on: January 11, 2018, 02:57:06 PM »

Yes cut about 1 month ago
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hondaracer2oo4

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Re: fan damper
« Reply #13 on: January 11, 2018, 03:23:09 PM »

You are going to need to split it and figure out what size works best. Probably start out around 6 inch splits with a good coal bed already established and work up or down in size from there. Coal bed is very important with green wood. Order as much wood as you can afford as soon as possible so you can start getting wood seasoned for next year.
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Elguano

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Re: fan damper
« Reply #14 on: January 13, 2018, 08:11:06 AM »

Any thought about a buffer tank? Seem like a good idea + I have plenty of room inside the house
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