Progress hybrid preignition before cat

[chipsoflyin]

Went though the usual routine this morning, got good secondaries for a half hour, stove goes black, see some flickering light but no flame in the box, look up at the screen and above the screen I was getting massive secondary burn, about a half hour of that and now the secondaries are back in the box. Anyone seen this yet and I was wondering about flame impingement on the cat, ceramic cat may not work in this environment, if they ever come out with one

 

[HollowHill]

No, I haven't seen that, but then again, I haven't been looking. I will do so in the future. Please tell WS about this - I wonder if it is supposed to be happening??? So, this occurred after you had secondary burn in the firebox, when the firebox had "gone black"?

 

[chipsoflyin]

Secondary burn in firebox for half hour, box goes black, secondary burn above screen for half hour then secondary burn back down in the firebox, I was thinking maybe creosote buildup before the cat

 

[rideau]

How long has it been since you have had the top open for visual inspection? Have you seen evidence of creosote accumulation there?

 

[chipsoflyin]

Every couple of weeks I pull the bypass damper and clean the screens, no evidence of creosote above the screens.

 

[ddddddden]

That happens all the time in the Fireview with the SS scoop + inconel screen. The flame can be coaxed back down into the firebox by opening the air a bit, but I don't worry about it anymore. I called Woodstock, and they said that flame impingement = sucking flame through the cat with too much draft.

 

[chipsoflyin]

Thanx