Nexgrill 720-1008 Guide Du Propriétaire page 23

Adjust High/Low Flame Setting Screw
When converting from LP to Natural gas, you will need to
adjust the high flame setting screw for ideal burner flame
height.
The flames of the grill burners and side burners (on some
models) should be blue and stable with no excessive noise
or lifting (LP gas flames will have a slightly yellow tip). A
yellow flame indicates not enough air. If flame is noisy or lifts
away from the burner, there is too much air. Some yellow
tips on flames when the burner is set to HIGH setting are
acceptable as long as no carbon or soot deposits appear.
The flames should be approximately 2.54 cm / 1 in high.
1. Remove each control knob for the main burners and
side burner.
2. Use a flat-blade screwdriver to turn the high flame
setscrew clockwise approximate 90º.
3.
4.
2.54 cm / 1 in
5.
6.
Record Conversion
The LP appliance nameplate is located inside the grill cabinet
on the left-hand side. Once converted, place the NG
appliance nameplate as close as possible to the current LP
appliance nameplate without covering it.
In the last page of the Use and Care Guide, write "Converted
to Natural Gas". Also record the conversion date and the
technician/company that performed the conversion.
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Check that burner operates at the new high flame
setting. It may be necessary to adjust the screw setting
slightly more to get the ideal burner flame height.
Replace the control knob and turn off the burner.
Repeat steps 1 through 4 for each burner if needed.
Replace the flame tamers and grates after the burners
have been cooled.