Chimney height and pipe id

[thebearded1]

Hello everyone,

I've posted before about my Regency F2400M that I have been using to heat my house and while cleaning the chimney earlier I realized I just barely don't meet the 3-2-10 rule. The chimney is 18" from the peak, 18" above the peak and 24" above where it exits the roof on the highest point. The chimney is made of insulated pipe from the stove straight up through the ceiling and roof. I have plenty of clearance around where it goes through the ceiling and built a metal channel around the chimney in the attic to keep the blown in insulation away which the previous owner didn't have. My chimney height is 9'8". Would adding another section make a big improvement? The stove seems to be working well using 20% or less dry cherry, oak and maple. I wondered if the added chimney length would allow me to burn slower.

I've also read about fresh air intakes but my stove isn't on an exterior wall so not sure how I would route the vent to keep it below the stove without it being a lot of work.

Any help on identifying the pipe? The sections are 29" long and attach together with a band clamp.

Thanks
Gene

 

[begreen]

Might be Selkirk. Got a picture of the cap?

 

[thebearded1]

Might be Selkirk. Got a picture of the cap?

 

[begreen]

It looks like a folded seam on the chimney pipe. If so, odds are it's older Selkirk pipe. I'm not sure if their newer chimney pipe mates with it properly or not.

 

[Trevor Tahclep]

With the cap removed if the chimney thickness is 2'' it quite possibly is a Selkirk, however I have never seen that particular model chimney cap on a Selkirk, would need to see a top view photo of a chimney section without the cap.

2 years ago had my 34 year old Selkirk chimney replaced with a new Selkirk Ultimate One model, the old chimney had 2'' thickness. The Ultimate One with its super '' SOLID PACK '' insulation is now only 1'' thick with the same ratings as before, doubt that model will fit.

 

[stoveliker]

I don't think you'd be able to burn slower. You'll have more draft with a taller chimney, so you'll be able to close the air more (if you're not yet running with the primary air completely closed).
But more suction and a smaller air inlet would result in (at least) the same burn rate. If you're already at minimum primary air, you'll likely have a higher burn rate once you extend the chimney.

But it's good to do; the 2-3-10 rule is for safety (too).

 

[thebearded1]

With the cap removed if the chimney thickness is 2'' it quite possibly is a Selkirk, however I have never seen that particular model chimney cap on a Selkirk, would need to see a top view photo of a chimney section without the cap.

2 years ago had my 34 year old Selkirk chimney replaced with a new Selkirk Ultimate One model, the old chimney had 2'' thickness. The Ultimate One with its super '' SOLID PACK '' insulation is now only 1'' thick with the same ratings as before, doubt that model will fit.

Looks like it's a little over an inch thick but definitely not 2"

There was an old label on the pipe under the cap clamp but impossible to read. Let me crawl in the attic and see if that section has a label

 

[Trevor Tahclep]

That is not like Selkirk Chimney that I have ever seen, however it maybe old Security Chimney from Laval Quebec.

Secure Temp ASHT+ - Security Chimneys

Secure Temp ASHT+ Finishing-Cone Black-Pipe-Adaptor Decorative-Collar-Single-Wall Decorative-Trim Spark-Arrester-Band Rain-Cap Snow-Diverter Storm-Collar Adjustable-Roof-Flashing Peak-Roof-Flashing Flat-Roof-Flashing Guy-Wire-Band Guy-Wire-Band Universal-Roof-Brace Universal-Wall-Band Firestop...

securitychimneys.com

 

[thebearded1]

I don't think you'd be able to burn slower. You'll have more draft with a taller chimney, so you'll be able to close the air more (if you're not yet running with the primary air completely closed).
But more suction and a smaller air inlet would result in (at least) the same burn rate. If you're already at minimum primary air, you'll likely have a higher burn rate once you extend the chimney.

But it's good to do; the 2-3-10 rule is for safety (too).

Usually I don't go all the way low on the air. I haven't had any draft issues before.

 

[Trevor Tahclep]

I don't think you'd be able to burn slower. You'll have more draft with a taller chimney, so you'll be able to close the air more (if you're not yet running with the primary air completely closed).
But more suction and a smaller air inlet would result in (at least) the same burn rate. If you're already at minimum primary air, you'll likely have a higher burn rate once you extend the chimney.

YEP !

 

[begreen]

With the cap removed if the chimney thickness is 2'' it quite possibly is a Selkirk, however I have never seen that particular model chimney cap on a Selkirk, would need to see a top view photo of a chimney section without the cap.

2 years ago had my 34 year old Selkirk chimney replaced with a new Selkirk Ultimate One model, the old chimney had 2'' thickness. The Ultimate One with its super '' SOLID PACK '' insulation is now only 1'' thick with the same ratings as before, doubt that model will fit.

Metabest had a cap like this. Canadian chimney pipe differs sometimes from US versions, even for the same company at times. I'm pretty sure this is Metalbest Sure Temp HT. Looks the same in their 2020 catalog and is 1" thick walled.

 

[Trevor Tahclep]

Metabest had a cap like this. Canadian chimney pipe differs sometimes from US versions, even for the same company at times. I'm pretty sure this is Metalbest Sure Temp HT. Looks the same in their 2020 catalog and is 1" thick walled.

View attachment 332089

This just wrung a bell, I recall a chimney company out of Brockville or Kingston Ontario 35 - 40 years ago or so named Metalbestos which later became Selkirk Metalbestos.