RealFlame C539LP Mode D'emploi page 6

NATURAL GAS CONVERSION
5.) Locate the new NG orifice spud, verify it is the correct number.
The sign 3.9mm should be on the end of the orifice spud.
3.9
6.) Slip sleeve over primary air opening. See fig. 1.
Next, screw the new NG orifice spud into the burner base. See fig. 2.
1 2
NG Orifice Spud
Sleeve
Primary Air
Opening
5