Kitchen Gas Appliances - Gas Oven Flames
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GHorn3
10-23-04, 07:56 PM
Just installed a new Frigidair gas wall oven. Made all the adjustments per the manual to convert to LP. Electric glow bar ignitor works fine, oven lites, but the flames are very long and reach up into the oven chamber. Flame tips are yellow to blue. Air adjustment is almost wide open per manual for LP. Should I reduce the air opening? or am I getting to much gas for some reason?
Thanks for your assistance!
Thanks for your assistance!
Sharp Advice
10-23-04, 10:33 PM
Hello GHorn3 and Welcome to the Do It Yourself Web Site and my Gas Appliances topic.
Have you already replaced the burner orifice? If not, have to remove the oven burners natural gas orifice and replce it with an LP orifice. Nat gas orifices have a larger hole in them than LP orifices.
Orifice may not need to be replaced if the oven manuals section on converting does not state it maybe. Never found an oven that the orifice did not need to be replaced during the conversion. Unless this is a new feature I have not heard about, the orifice needs to be replaced.
The correct orifice for propane should be included with any conversion parts that may have came with the oven. If not, than you will have to remove the orifice off the gas valve, take it to the local appliance store along with the ovens rated btu rate and buy the propane sized orifice.
The orifice is the hext cap thimble looking part screwed onto the gas valve. The burner must be removed to access the orifice located just beneath the end of the burner tube where the air shutter is located.
No amount of air shutter adjustment will correct the oversized burner flames except the correct sized and rated LP orifice. Install the correct orifice and the problem will be resolved.
Use the reply button to post back the results of the orifice replacement, once the task is completed. Other members reading the question can also learn from it and what the final results where. Thanks.
By the way (BTW)
Did you also put the pilot screw into the LP position? Located under the oven temp knob. If not, remove oven temp dial, turn set screw to LP from Nat setting or per instructions in the manual. If oven is a touch pad control, follow owners manual instructions. Should be a place to do so on the gas valve or elsewhere based on that specific model.
Have you already replaced the burner orifice? If not, have to remove the oven burners natural gas orifice and replce it with an LP orifice. Nat gas orifices have a larger hole in them than LP orifices.
Orifice may not need to be replaced if the oven manuals section on converting does not state it maybe. Never found an oven that the orifice did not need to be replaced during the conversion. Unless this is a new feature I have not heard about, the orifice needs to be replaced.
The correct orifice for propane should be included with any conversion parts that may have came with the oven. If not, than you will have to remove the orifice off the gas valve, take it to the local appliance store along with the ovens rated btu rate and buy the propane sized orifice.
The orifice is the hext cap thimble looking part screwed onto the gas valve. The burner must be removed to access the orifice located just beneath the end of the burner tube where the air shutter is located.
No amount of air shutter adjustment will correct the oversized burner flames except the correct sized and rated LP orifice. Install the correct orifice and the problem will be resolved.
Use the reply button to post back the results of the orifice replacement, once the task is completed. Other members reading the question can also learn from it and what the final results where. Thanks.
By the way (BTW)
Did you also put the pilot screw into the LP position? Located under the oven temp knob. If not, remove oven temp dial, turn set screw to LP from Nat setting or per instructions in the manual. If oven is a touch pad control, follow owners manual instructions. Should be a place to do so on the gas valve or elsewhere based on that specific model.
GHorn3
10-24-04, 06:20 AM
Thanks for your reply
Per the installation manual, I converted the pressure regulator for use with LP gas by turning the plunger in the regulator upside down. This oven also has an adjustable burner orifice. The manual states:
"using a 1/2" wrench, turn down the adjustable spud approximately 2 1/2 turns until snug against the LP metering pin. Do not overtighten."
Perhaps I didn't turn the spud down enough? Although I worry about overtightening.
Thanks again. I did have to change orifices on my cook top which were supplied. Its working great!
George
Per the installation manual, I converted the pressure regulator for use with LP gas by turning the plunger in the regulator upside down. This oven also has an adjustable burner orifice. The manual states:
"using a 1/2" wrench, turn down the adjustable spud approximately 2 1/2 turns until snug against the LP metering pin. Do not overtighten."
Perhaps I didn't turn the spud down enough? Although I worry about overtightening.
Thanks again. I did have to change orifices on my cook top which were supplied. Its working great!
George
Sharp Advice
10-24-04, 09:03 PM
Hi: George
Sooooo. That orifice does not need to be chnaged to an LP orifice. Simply screwing it down to adjust flame size is all it takes. Suspected something like that but not found one during my past years as a tech. New method not heard of by me or reported back to me from services reps. Learn something new everyday or hope to.
Now all you need to do is adjust that orifice until the flames do not exceed the flame spreader size. Best setting is when burner flames are not more than 1-2 inches less than the flame spreaders size. In other words, one to two inches before the outer edges of the flame spreader plate on each side.
Flame spreader plate is the plate on top of the burner and held in place by a wing nut, usually or can be a small nut. Under side is where burner is and flames are. Looking closely at the spreader marks should be present where former flames where and or a slightly raised edge to indicate where burner flames should end as the spread outwards from the burner.
Burner orifices can become difficult to tighten. Look at the distance laft between bottom of hex nut and end of threads out of the gas valve. Distance should indicate amount left. Very close but not bottomed out will be the lowest amount providing smallest flame size.
Once nut bottomed out, open three turns and test burner. Usually this is done while burner is running. Careful to not burn arm. Does happen. Also gets HOT in there. Move quickly in and out, half turn each time until burner flames set correctly. Burn arm hair also common...:) Practice does make perfect...:D
Excuse me. I get very detailed. Too many years teaching & explaining...:) But do love the profession of teaching.
Sooooo. That orifice does not need to be chnaged to an LP orifice. Simply screwing it down to adjust flame size is all it takes. Suspected something like that but not found one during my past years as a tech. New method not heard of by me or reported back to me from services reps. Learn something new everyday or hope to.
Now all you need to do is adjust that orifice until the flames do not exceed the flame spreader size. Best setting is when burner flames are not more than 1-2 inches less than the flame spreaders size. In other words, one to two inches before the outer edges of the flame spreader plate on each side.
Flame spreader plate is the plate on top of the burner and held in place by a wing nut, usually or can be a small nut. Under side is where burner is and flames are. Looking closely at the spreader marks should be present where former flames where and or a slightly raised edge to indicate where burner flames should end as the spread outwards from the burner.
Burner orifices can become difficult to tighten. Look at the distance laft between bottom of hex nut and end of threads out of the gas valve. Distance should indicate amount left. Very close but not bottomed out will be the lowest amount providing smallest flame size.
Once nut bottomed out, open three turns and test burner. Usually this is done while burner is running. Careful to not burn arm. Does happen. Also gets HOT in there. Move quickly in and out, half turn each time until burner flames set correctly. Burn arm hair also common...:) Practice does make perfect...:D
Excuse me. I get very detailed. Too many years teaching & explaining...:) But do love the profession of teaching.