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Re: adjusting main burner flame
Goto the gas valve,you will see 2 slotted silver caps 1 small 1 big.unscrew the big cap then youll see a white plastic screw.turn this screw counterclockwise to increase the gas pressure,clockwise decreases pressure.nat. gas pressure should be 3.5 inches of water colum
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If you don't know that you are doing you should buy them. You need one for each burner, 3 or 4 for most models. Yes they can be drilled out going only one way, using lettered drill bits that are hard to find. The regulator on the back normally has to be adjusted also. If either is wrong, the flame will be to big or to small to heat correctly. At least buy one orifice and check the size hole, they are not expensive $5 -$10 if you do a little searching for a good price.
The Part Numbers are: Orifice - NAT. Gas 1625-36 Orifice - L.P. Gas 1625-51
You MUST use Lettered drill bits for size, Like A-Z If it was drilled with any normal size bits 1/16 type bits it will NOT be correct! There should be a number stamped on the orifice, unless it was drilled out. Most people never mark the door that the gas type was changed, causes all types of problems for the service men. Can you give more details to your problems? I couldn't find the hole sizes right off, but have seen it listed.
There is no gas adjustment screw. There is an air ratio adjustment on each burner. Loosen the screw that holds the flame adjuster and turn the stamped metal adjuster until there is no orange portion of the flame visible. Tighten the screw and you're done.
Hi there. Check the gas pressure, it should meet the the nameplate required pressure, low gas pressure produce poor flame quality which results in soot formation.. The type of gas must also be compatible with the orifice sizes on pilot and burners. Check and clean as needed all soot formation on burners and fire tubes.
If you didn't figure it out already you lost the orifice on the pilot light. It's a little metal cup with a tiny hole in it that slips over the end of the gas tube in the pilot assembly. The orifice controls the size of the pilot light. Need to get a new one or find the lost part.
Note that sooting with yellow flame is the result of insufficient air (i.e. oxygen) mixing with the propane gas. You need to identify where do you open the orifice or neck where the propane gas is released to burner. Open this orifice wider to add more air mixture to your propane and you should be able to get the flame back to bluish color.
Set t/stat to 250 degrees. If it does not shut off after about 5 minutes, replace t/stat.If shuts off, must be calibrated Pilot may be dirty, flame weak. If flame strong, replace thermopile(pilot generator). If weak, must remove and clean pilot orifice inside pilot.
multiple problems can be causing this: 1.burner orfice restricted 2. make up air 3. blower motor or relay defective 4.gas pressure to high 5. not enough gas pressure 6. restriction in gas line 7. defective gas valve 8. defective control or ignition module........recommend qualified tech. to look at