When to engage/close the bypass

[stoveliker]

It's like this.
A valve on a T that opens up once the suction (draft) is too high, letting in air from the room in which it is in.
Generally their trigger point setting can be set by moving a weight. (note that this one seems to be upside down...)
So they resolve high draft on the stove by satisfying the suction partly by flow through the stove and partly by letting in air from the room.

 

[Tron]

Ah, so they don't control the flue diameter with a physical damper but let air in to relieve suction pressure. Understood.

 

[Highbeam]

Because barometric damper mix in cool room air into the exhaust...

Because barometric damper mix in cool room air into the exhaust...

The other problem is that they get sucked wide open in the event of a chimney fire which seems like a bad thing.

 

[Woody Stover]

I am curious about your thermocouple/probe setup. I'm not thrilled with the catalytic thermometer that Hearthstone provides as the blower tends to influence the reading quite a bit. Any information you can provide me? Thanks in advance.

Have you ever seen your cat thermo up in the "too hot" range? I have my alarm set for 1450* because they say cat damage can occur at prolonged temps in excess of 1500*.
Measure the thermometer length, then order the sensor for the Auber thermo accordingly. If you can somehow tell where the probe tip is in relation to the face of the cat, you want to bend/adjust so that the tip of the probe 1/2-3/4" from the cat.

High temperature thermometer, Pyrometer, AC powered [AT100TC] - $61.99 : Auber Instruments, Inc., Temperature control solutions for home and industry

Auber Instruments, Inc. High temperature thermometer, Pyrometer, AC powered [AT100TC] - Product Update (8/14/2023): The new batch AT100-TC thermometer is installed with a female thermocouple mini connector. The old AT100 thermometers shipped before 8/14/2023 are installed with a special green...

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