Cracked Glass on Start Up

[B1Gmike05]

Hi Everyone,

I am new to the forums, and have a question regarding a Dutchwest 2461. I have recently purchased a home and there was a Dutchwest stove in the basement. Upon my first glance everything looked good. In my old home we used a fireplace insert to heat a portion of the home. It was an old all metal construction, with no glass.

Now to my question. over the weekend I had started the first fire of the season for us. I went through all the steps and primed the chimney for the first light. Was about 30 minutes in and was starting to get a nice bed of coals. Then I saw the crack! It started at the bottom right corner and slowly crept up to the top left. By the end the entire sheet of glass was cracked in half. Now what are the causes of a crack like this? I didn't hit the glass with any of the wood, and slowly closed the doors when shutting them. Could there have already been a small crack that I missed? I have already ordered a replacement glass and a new gasket kit. I am just not sure if there is something that I may have done wrong since the stove has glass. I only have experience with solid metal stoves. I am going to work on taking the stove apart to replace all the gaskets and glass, is there anything particular that I should look or watch for during this process? Any help would be greatly appreciated.

Thanks

 

[peakbagger]

Any chance that the prior owner had broken the glass and replaced it standard window glass to make the sale?
Many stoves use a special type of "glass". Here is random link showing the options. https://www.woodstove-fireplaceglas...PWEZGufUgo6HufABnN8kqO4OTr0iTeXhoCi3EQAvD_BwE

 

[B1Gmike05]

Any chance that the prior owner had broken the glass and replaced it standard window glass to make the sale?
Many stoves use a special type of "glass". Here is random link showing the options. https://www.woodstove-fireplaceglas...PWEZGufUgo6HufABnN8kqO4OTr0iTeXhoCi3EQAvD_BwE

I am not sure. Is there anyway to tell if it is the correct type of glass rather than just standard glass just by looking at it? The new piece of glass that I ordered is an OEM replacement, so hopefully no issues once its installed.

 

[peakbagger]

IMO , not really. On occasion I need to look into inspection ports on large biomass power boilers (4 stories tall) and the glass inevitably needs replacing as the interior gets sandblasted. They always order pyroceramic glass but it looks like regular glass to me.

 

[stoveliker]

Most regular glass has a green-bluish color when viewed edge-on. (I.e. not noticeably when looking thru the window.)

I think that is not the case with pyroceramic glass.

Not a guarantee, but a telltale data point.

 

[Isaac Carlson]

Ceramic glass sounds different to me. More of the solid sound than a ringing like regular glass. Either way, it's broke and needs to be replaced.

 

[Rearscreen]

I have no idea if this applies to the type of glass used in a wood stove but there is a way to check if it is regular plate glass or tempered. At one point I installed 60 pinball machines, old and new from various sources, into a commercial setting. One of my concerns was that the glass was tempered for safety. Google University taught me: Take a picture of a turquoise background on a I pad. Get a pair of polarized sunglasses. Place the pad with it placed below the glass and look through the glasses at the picture. The glass will have "stripes" in it if it's tempered. Every glass is a bit different but plainly some sort of striations. I think I found 2 of the 60 machines that did not have tempered glass.

 

[stoveliker]

Cool. I googled that, and I don't understand yet why tempered glass has variations in local polarization direction (or why tempered glass would polarize light at all...), but indeed your solution appears to be correct.

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Thanks for interesting input!!

 

[Sono]

Cool. I googled that, and I don't understand yet why tempered glass has variations in local polarization direction (or why tempered glass would polarize light at all...), but indeed your solution appears to be correct.

We used to have a gigantic saltwater aquarium set up, to drill holes for overflows or returns I used polorized sunglasses, the tempered glass on aquariums in also like the side and rear glass on cars, it has greyish ball size spots all over it, those spots are actually where the flames from the heat treating process. Not sure about the ceramic glass for wood stoves as its a different process. Ive seen guys build wood stoves from old boiler tanks ect... and use pyrex pans as the glass, it works while its running but during the cool down when the fire goes out they shatter..... not made for that type of heat.

 

[chainsawopera]

Hi Everyone,

I am new to the forums, and have a question regarding a Dutchwest 2461. I have recently purchased a home and there was a Dutchwest stove in the basement. Upon my first glance everything looked good. In my old home we used a fireplace insert to heat a portion of the home. It was an old all metal construction, with no glass.

Now to my question. over the weekend I had started the first fire of the season for us. I went through all the steps and primed the chimney for the first light. Was about 30 minutes in and was starting to get a nice bed of coals. Then I saw the crack! It started at the bottom right corner and slowly crept up to the top left. By the end the entire sheet of glass was cracked in half. Now what are the causes of a crack like this? I didn't hit the glass with any of the wood, and slowly closed the doors when shutting them. Could there have already been a small crack that I missed? I have already ordered a replacement glass and a new gasket kit. I am just not sure if there is something that I may have done wrong since the stove has glass. I only have experience with solid metal stoves. I am going to work on taking the stove apart to replace all the gaskets and glass, is there anything particular that I should look or watch for during this process? Any help would be greatly appreciated.

Thanks

The same thing happened to my avalon insert , when I replaced the gaskets and probably overtightened the clamps.
The glass couldn't expand with the heat . As the fire got hotter -more cracks appeared.
$200 dollar lession leaned

 

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[joop]

my daughter had a zc fire place i lit it up as heat built up blew apart not the same glass as woodstove i guess