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[mikenc]

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?   

[Guru]

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

[sstan]

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

[mikenc]

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?

[unaslob]

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...

[Guru]

The 2009 models have an adjustable shutter between the blower and the stove.  I can send you pictures if you need more help.

[unaslob]

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.

[sstan]

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

[Guru]

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.

[unaslob]

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