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Author Topic: Draft Fan Opening  (Read 29374 times)

mikenc

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Draft Fan Opening
« on: November 03, 2009, 07:13:16 AM »

Just wandering where other NCB owners have there fan opening set, and how you determined where to set?  I think owners manual says 1/4 inch. Is this the setting everyone has used?   
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Guru

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Re: Draft Fan Opening
« Reply #1 on: November 03, 2009, 10:11:37 AM »

The draft fan opening should be set at 1/4" at its widest point.
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Mike
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Caro MI
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sstan

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Re: Draft Fan Opening
« Reply #2 on: November 16, 2009, 10:58:02 AM »

Mine is a couple years old and the fan cover was NOT adjustable ... over the summer I did retrofit to be adjustable .. I ran the boiler over the summer to heat my swimming pool ... a little less then the 1/4 inch .. but will open it up more as the season goes on.

steve
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Steve from Windsor NY
using an NCB- 175

mikenc

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Re: Draft Fan Opening
« Reply #3 on: November 18, 2009, 07:00:09 AM »

Steve thanks for the reply. Mine has a turn buckle on it for adjustment. I have noticed that just  1/2 turn on one end makes a big difference in the amount of air into fire box. I have re-worked my grate to keep large chunks from falling through and directed more air to front. I seems to be working better. May have to play around a little to find best air adjustment for new grate. One thing for sure to much air heat goes right up the chimney.

I also noticed an old post of yours where you were thinking  about relocating pump, reversing supply and return piping. How did this work out?
How did pool heating this summer go? How much wood?
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unaslob

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Re: Draft Fan Opening
« Reply #4 on: January 02, 2010, 08:05:24 PM »

has anyone had any luck adjusting the draft door for the 2009 model.... the door completely lifts off of the fan... it is not hinged like previous models...
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Re: Draft Fan Opening
« Reply #5 on: January 04, 2010, 10:16:35 AM »

The 2009 models have an adjustable shutter between the blower and the stove.  I can send you pictures if you need more help.
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Mike
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Caro MI
http://www.mikesadvancedheating.com/

unaslob

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Re: Draft Fan Opening
« Reply #6 on: January 04, 2010, 08:40:01 PM »

this would be helpful... I pic would be great.    I have been putting a firm rubber jar opener over about half of the opening with mixed results.  I pic would be lovely.  thank you...  if u can post it that would be great, if you need me email that is fine to.
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sstan

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Re: Draft Fan Opening
« Reply #7 on: January 05, 2010, 07:32:31 AM »

I would be interested in this also!  I have a 2007 model that back then the "cover" was not hindged at all and in fact it was stationary between the seliniod that lifted the cover and the fan.. I moved the seliniod up and put a turn buckel in to make the gap adjustable.  Works better but there balance of the thing makes it hard to fine tune adjustment .. love to know more about this other type of control and if a retrofit can be made!

steve
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Steve from Windsor NY
using an NCB- 175

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Re: Draft Fan Opening
« Reply #8 on: January 06, 2010, 06:22:05 AM »

Ok,  Sorry for the delay.  I had to take the picture last night.  I circled the shutter.  All you need to do is loosen the screw and slide the shutter up or down.  Up will decrease the flow and down will increase the flow.  There are indicator notches on the side of the shutter for reference.  I will ask technical support if this setup will work on older models.
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Mike
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Caro MI
http://www.mikesadvancedheating.com/

unaslob

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Re: Draft Fan Opening
« Reply #9 on: January 06, 2010, 07:54:04 AM »

thanks, this is seemingly easy... I dont remember reading about that in the manual.
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woodedacres

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Re: Draft Fan Opening
« Reply #10 on: January 19, 2012, 07:56:44 AM »

newbie here

what a great place to get educated

well i just got my nc250 up and running. was burning through wood every 8 hrs. read this thread and found out my damper was wide open. i sure hope my fire lasts longer now.
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Bull

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Re: Draft Fan Opening
« Reply #11 on: January 20, 2012, 03:53:52 AM »

Welcome to the site woodedacres
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Southern Indiana
Just outside of the "Small Town"

mikenc

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Re: Draft Fan Opening
« Reply #12 on: January 20, 2012, 06:55:56 AM »

newbie here

what a great place to get educated

well i just got my nc250 up and running. was burning through wood every 8 hrs. read this thread and found out my damper was wide open. i sure hope my fire lasts longer now.

Welcome Woodedacres. Should make a big differance in wood useage. Let us now how it turnes out.
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woodedacres

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Re: Draft Fan Opening
« Reply #13 on: January 20, 2012, 07:59:45 AM »

well it made a big difference. unfortunately it wouldn't keep water at temperature at that setting. not to mention it eventually snuffed out the fire. i gradually began openingthe damper and am currently at notch 3 and seems pretty good so far. loaded this morning around 8:30 good fire wood consumption seems marginal and the water temp is coming up. another note i have the three speed pumps. what speed is everyone running?
« Last Edit: January 20, 2012, 08:01:59 AM by woodedacres »
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Scott7m

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Re: Draft Fan Opening
« Reply #14 on: January 20, 2012, 09:25:38 AM »

NC recommends leaving them on high, makes no difference with efficiency..

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