Hi500 Catalytic Combustor overfiring

[BThompson]

Hello folks.
I'm into my third winter with this stove and just had to replace the Cat at the beginning of the 23/24 season. I was of the understanding that when the cat is engaged and the air control is all the way down, that there would be almost no visible flames and the wood would be "baking" instead of burning. My stove however looks like a blower is attached to the air inlet and will have large visible flames even when the air is all the way down and the cat is engaged. When I engage the combustor at 500 degrees, the stove will jump in temp to about 1200 degrees at the Cat probe. I can then see the combustor honeycomb glowing red like the manual says. Is this normal?

It seems to me that the stove, when up to operating temp, is pulling in a massive amount of air and burning too hot even with the air control all the way down. I've tried working with the dealer who sold it to me and installed it but they're not giving me much help.

 

[ncmurf00]

Hello folks.
I'm into my third winter with this stove and just had to replace the Cat at the beginning of the 23/24 season. I was of the understanding that when the cat is engaged and the air control is all the way down, that there would be almost no visible flames and the wood would be "baking" instead of burning. My stove however looks like a blower is attached to the air inlet and will have large visible flames even when the air is all the way down and the cat is engaged. When I engage the combustor at 500 degrees, the stove will jump in temp to about 1200 degrees at the Cat probe. I can then see the combustor honeycomb glowing red like the manual says. Is this normal?

It seems to me that the stove, when up to operating temp, is pulling in a massive amount of air and burning too hot even with the air control all the way down. I've tried working with the dealer who sold it to me and installed it but they're not giving me much help.

View attachment 322671 View attachment 322672

Have you had any resolution on this? I have an HI500 and am going through way more wood than my old Buck 27000.

 

[bholler]

Have you had any resolution on this? I have an HI500 and am going through way more wood than my old Buck 27000.

How tall is your chimney?

 

[ncmurf00]

How tall is your chimney?

Two story house with a steep pitch, I’d say 30 foot tall with 6” liner.

 

[ncmurf00]

Two story house with a steep pitch, I’d say 30 foot tall with 6” liner.

Fully loaded lasts 2 hours at best. This is what it looks like with a fully closed damper. Haven’t had it a full year yet.

 

[stoveliker]

You likely need a second (key) damper at 30 ft.

 

[bholler]

Two story house with a steep pitch, I’d say 30 foot tall with 6” liner.

You are over drafting did the installer make sure the restrictor plate was inplace? You will probably need a pipe damper as well

 

[ncmurf00]

You are over drafting did the installer make sure the restrictor plate was inplace? You will probably need a pipe damper as well

I’ll have to reach out and find out. Kinda getting ghosted.