I understand my liner install is UL Listed to UL 1777 so its rated for 1000F continuous use but I also see Listed to ULC S635 and that appears to be 1200F. Am I correct in reading that as 1200F is safe continuous temp?
ULC S635 = 1200F continuous safe temp?
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I'm not sure, but most likely correct. However, if the liner is seeing continuous 1000º temps, then burning is wasteful and very inefficient.
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Just a curiosity. I rarely see peak burn hit 900 which makes me wary and I can step through since I have a camera on the gauges. I'm guessing most people (excluding most here) have no idea and probably hit 1000F+ at times.
The rating looks like it might be a difference for the Canadian market. I just get weary with it being 0 clearance and getting near 900 or higher.
That's the beauty of (UL or other) testing, it's been *demonstrated* that things are safe up to the limits they indicate. (In fact, it's been demonstrated to be safe with a margin above the limits that are indicated.). No (weary) feeling involved.
I would be weary though about the wasted (wood processing) effort and heat that is pumped through the flue when one runs that hot continuously.
I would be weary though about the wasted (wood processing) effort and heat that is pumped through the flue when one runs that hot continuously.
An occaisonal peak at 900 or even 1000ºF will happen. We all get distracted at one point or another. A digital thermometer with an alarm helps. This is not the same as continuous operation at those temps. There's nothing to be wary about if the normal flue temps are in the 400-700º range depending on stove tech and normal variables.
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