AGA GC Open Flue Range Installation Instructions Manual page 5

INITIAL LIGHTING OF RANGE
In a cold range, difficulty may be experienced in maintaining
the main burner alight on initial light-up only. Should this
occur, set the control knob to the
and light pilot. With the pilot flame established, release the
control knob gradually and rotate anti-clockwise to its low fire
position. Depress knob
5
position, whereupon the main burner will light. Leave in the
low fire position for at least 30 minutes.
NOTE: Any attempt to rotate the control knob before
release may result in damage.
After 30 minutes rotate the control knob further anti-clockwise
to the mid position in the green band for normal running.