excessive soot

[leadsinger]

Getting excessive soot from a Char Broil model 04501144 LP gas fireplace. Checked all gas lines, burner, etc. Obviously this device isn't getting sufficient air. I've not found any adjustable air shutter. Suggestions would be most appreciated.

 

[Whitenuckler]

Getting excessive soot from a Char Broil model 04501144 LP gas fireplace. Checked all gas lines, burner, etc. Obviously this device isn't getting sufficient air. I've not found any adjustable air shutter. Suggestions would be most appreciated.

Is that the outdoor fireplace? What is the color of the flame?

 

[leadsinger]

Yes, it's a freestanding fireplace with a 20 pound propane tank mounted below in the cabinet. The flames immediate to the burner ports are blue (as they should be) and then become orange/red as the flames rise. This is expected since the "fireplace" has concrete(?) "logs" through which the flames are designed to exit. After approximately 10-15 minutes of burn time the logs (correctly positioned) are coated with heavy soot where the flames make contact. The burner is clean and its orifices have nothing obstructing gas flow. The shutter isn't adjustable. I have a propane indoor fireplace insert similarly configured but there are no issues with excessive soot.

 

[Whitenuckler]

Yes, it's a freestanding fireplace with a 20 pound propane tank mounted below in the cabinet. The flames immediate to the burner ports are blue (as they should be) and then become orange/red as the flames rise. This is expected since the "fireplace" has concrete(?) "logs" through which the flames are designed to exit. After approximately 10-15 minutes of burn time the logs (correctly positioned) are coated with heavy soot where the flames make contact. The burner is clean and its orifices have nothing obstructing gas flow. The shutter isn't adjustable. I have a propane indoor fireplace insert similarly configured but there are no issues with excessive soot.

I know some gas fireplaces are designed to burn with an orange flame as it looks more natural. If it burned the way you like before, I'd try a new regulator and fresh tank. You can take the gas valve/burner off and clean it. There should be a spot where air is mixed with gas in a pipe before the nozzle.

 

[Lennox65]

Yes, it's a freestanding fireplace with a 20 pound propane tank mounted below in the cabinet. The flames immediate to the burner ports are blue (as they should be) and then become orange/red as the flames rise. This is expected since the "fireplace" has concrete(?) "logs" through which the flames are designed to exit. After approximately 10-15 minutes of burn time the logs (correctly positioned) are coated with heavy soot where the flames make contact. The burner is clean and its orifices have nothing obstructing gas flow. The shutter isn't adjustable. I have a propane indoor fireplace insert similarly configured but there are no issues with excessive soot.

Have you tried running it without the logs? If it doesn't soot without the logs, it is flame impingement causing the soot and you will have to adjust the logs.