Question about Viking VGSC306-4B Gas Kitchen Range

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Viking Gas Oven VGSO-166 flame too high

VGSO166 36" VIKING Gas Oven:

Just installed a single VGSO 166. We are on LP (Propane) tank gas. We have numerous other gas appliances in the home....the WC for the LP gas (whole house regulator) is adjusted properly (around 11").

The problem: The flames which arrise from the burner tubes are almost 4" long. The flames are yellow tipped even at max air shutter (yes, worse with closed shutter) and indicate excessive gas flow/pressure and/or insufficient air. There is (already) some sooting after just a few seconds of run-time.

Any clues? This unit has an internal regulator. The orifices are extremely difficult to turn, so we are not very motivated to unscrew/loosen them to verify that the adjustment was correct. One orifice DID tighten a little bit more--this seemed to improve the flame on the that burner tube.

Anyone ever worked on one of these? (below is the background on the installation)



Per the instructions from Viking (not very clear) the regulator cap was 'flipped' and the spring (under the reg. cap) was left in place. The force required to secure (bayonet lock) the reg. cap was higher than expected. Also per instructions, the 2 main gas burner (oven) orifices were adjusted (per the manual; counterclockwise--we interpreted this to mean 'screw the orifices into the gas tube further, as opposed to loosening the orifices back towards the air shutters'. We have the broiler orifice ready to be installed, but didn't have time to drop the broiler after trouble shooting the oven (3 wires were loose after shipping).

HELP!!!

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  • 2 more comments 
  • taterhed Dec 21, 2008

    Consulted with a local tech....he suggested that the orifice must be VERY tight. The instructions indicate "...tighten to the pin..." or some such nonsense. The tech suggested 'tighten till no threads are visible'. This did the trick.



    Thanks for the help.



    The flames are still quite high for the size and shape of the flame deflector. Cooks like a charm though!

  • taterhed Dec 22, 2008

    Is the #57 orifice the same 'variable' screw down to adjust orifice that comes stock installed on the unit?



    Thanks.

  • taterhed Dec 22, 2008

    Thank you so much! I'll get the #57 orifices and install them to settle my mind.



    I've read a lot about pre-mature burnout of the flame dispersion pan/oven floor. Seeing the level of the flame and the glowing metal, I'm going to try and avoid that.



    The oven is certainly not short-cyling.

    Thanks so much!



    By the by....are the orifices just standard #57's ? Nothing special I'm guesing?

  • taterhed Dec 22, 2008

    That was my idea. Thanks.



    Again....super job!



    Wish the company could have just supplied the two burner orifices along with the broiler orifice (the broiler works precisely as it should!)



    Cheers.

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  • 42 Answers

Make sure the hood orifice is a #52. (orifice to bake burner)you can go to the local propane gas company and see if they have one they will sell you.

Posted on Dec 20, 2008

  • 1 more comment 
  • Tom Hurley Dec 22, 2008

    the correct orifice for the propane is a #57

  • Tom Hurley Dec 22, 2008

    the #57 is the size the variable should screw down to when you tighten the orifice over the needle. by going ahead and using the #57 you know for sure that the size is right when it is snug

  • Tom Hurley Dec 22, 2008

    they call it a hood orifice .. i would take the variable orifice off and take it to the gas company just so they will see it is a hood orifice. remember the #57 will have a smaller hole then the variable orifice because your not be adjusting it down as you turn it

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