Oven Burner Adjustments - Viking VGR30 Service Manual

Check the gas supply, and set the regulator to the proper supply of gas. A properly adjusted burner should be stable and
quiet. The flame should have a sharp, well defined blue inner cone with no yellow tipping. The flame should also be
stable and uniform with no flames lifting off the burner ports.
To gain access to the oven burner adjustments:
1. Remove the kick plate - remove screw from each
side of the kick plate and tilt the top of the kick
plate forward.
2. Locate the air shutter (illustration#1, item "1") and
loosen the set screw (illustration #1, item "2") that
holds the air shutter in place.
3. Light the burners by rotating the thermostat to a
baking temperature.
4. Using a ½" open end wrench, adjust the orifice
hood (illustration #1, item "3") to obtain a sharp
well defined blue inner cone approximately ½"
long. The flame should be contacting the burner at
each port opening. THE FLAME SHOULD NOT
EXTEND INTO THE OVEN BOTTOM VENT
SLOTS.
5. With a proper flame height, adjust the air shutter
(illustration #1, item "1") to obtain a blue flame
with no yellow tipping that contacts the burner at
the burner ports.
a) Open the air shutter gap (illustration#1,
item "1") to eliminate yellow tipping.
b) Close the air shutter gap (illustration #1,
item "1") to prevent a noisy flame that
lifts off the burner ports.
OVEN TUBULAR GAS BURNER ADJUSTMENTS
ILLUSTRATION #1
6. Recheck the orifice hood (illustration #1, item
"3") adjustment for proper gas flow.
7. Turn the thermostat control to off.
8. Tighten the air shutter set screw (illustration #1,
item "2").
9. Relight each burner and observe the flame for
proper adjustments.
above.
10. Turn the convection fan on and observe that the
flame does not lift off the burner ports, readjust
the air shutter gap with the convection fan
running.
11. Replace the kick plate.
IMPORTANT: Conditions that cause odors:
a). Floating flames are lazy looking and not have a
well defined inner cone.
defined, quiet flames that sometimes lift
completely off the ports and cause a strong and
pungent odor.
b). Lifting flames are well defined, hard and noisy
that lift completely off the ports.
c). An orifice that is out of line with the burner
venturi.
17
If necessary, repeat the
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