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[karlk]

Anyone change their nozzle yet?
How long did it last?

[coolidge]

Made my own by installing 1" firebrick on the bottom.  Run a couple rows in front and back east/ west and then a couple in the middle north/ south with the required slot.
Been working great and easy too change. You will have too cut some of the brick to get them too fit right.

[dwneast77]

I'm curious to know the size of the 250 nozzle, length and width of the opening. 

Thinking about re-working the nozzle in my CB-2300.

Thanks,
Jeff

[karlk]

I cast my own replacement nozzle out of castable refractory with some changes to the slot, works great.
Jeff I will post pictures and size later

[dwneast77]

karlk- Cool, I look forward to seeing it.

thanks

[karlk]

The pictures are attached, the approximate measurements are below:
11" long
4" wide
4" deep, tapered
1/4" on 4 sides

I work with refractories daily. If you could send me some sort of template I could make a nozzle for you. Possibly with some improvements.



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[James]

WOW, Karl!

That's slick!  If you are ever interested in selling these, I'd be in for one per year depending on price.  That seems to be the rate at which I'm wearing them out.

Also, it looks in your second photo that you've got the same phenomenon as me.  At the bottom of the gasification flame there appears to be a build-up of some sort of solid material.  It almost looks like the refractory from the nozzle is melting and being forced down there to form a reverse cone of formed refractory brick.

[martyinmi]

Wow is right!
I have one from P&M that looks identical to the one that you've cast.
I tried casting one myself, but the refractory cement had been sitting for a year in the shop and for some reason never bonded properly(flaked apart).
You know, you could sell those for $100 each.

[karlk]

It has some changes from the p&m nozzle,and could sell them for less than 100
pm me

[coolidge]

very nice,  Has anyone cut there existing nozzle out? I know the new boiler design has a changable one.

[karlk]

I cut mine out, not much fun. My original nozzle was worn quit a bit so there really was not a lot of material to remove.
I got a new nozzle from p&m to use as a guide, turned on the fan and put a shop vac in the lower chamber.
I used a 4 inch grinder with a diamond blade and tried to cut so the dust went down thru the opening
Wear a good dust mask
Really wasnt bad and took about an hour, now I can change my nozzle in minutes

[jreimer]

Has anyone changed the nozzle?  How difficult is it to change it?  I have burned one heating season and my nozzle has some serious wear on it and the stove is having difficulty gasifying now. 

If you did change it, did you get one directly from Portage and Main or did you manufacture your own?  Do you know if they cover the nozzle on warranty?

[jreimer]

Another update to my post:

I took a good look at the nozzle yesterday and there are signs of major deterioration.  I cleaned it off with a gloved hand and picked at it with my fingers.  To my surprise some major pieces were loose and came off!  I don't know if it's poor manufacturing or whether one year is the lifespan of these nozzles.

I'm awaiting a call back from my dealer to see if they will replace it on warranty.  I'm thinking it should be covered on warranty because the stove is not a year old. 

I've put through about 18 full cords this year, so is this the lifespan I should expect from a nozzle?

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[slimjim]

No you should  be getting far more than one year out of the nozzle. chech with your local dealer to find the problem before you go to the trouble of replacing it. usually when the nozzle goes bad that soon it is caused by scraping out the nozzle with metal when the nozzle gets plugged, leave it alone and it will burn itself clean, if it does not then you have another hidden problem and that is moisture. Is your wood dry, do you have any air leaks around door gaskets or at the back of your distibution box (this will create lots of moisture within the firebox), creating wet ash that then plugs up the nozzle.

[jreimer]

Hi slimjim,

I haven't had issues with a plugged nozzle this winter and I haven't been scraping it out with any tools.  My wood has been split and stacked for 2+ years and is fairly dry.  It seems the entire nozzle has gone crumbly with big chunks breaking off.

My dealer rep has been out of the office so I haven't been able to speak with him about it yet.

In any case, do you know what the process is to replace it?