Fire Magic Tubular Burners Addendum - Manual (Page 2)

REV 0 - 1504231350 L-C2-422 2
TUBULAR BURNER ADDENDUM
1. Follow the safety precautions and steps for main
burner removal in the
CHANGING THE MAIN
BURNER ORIFICE
section (steps 1-3).
2. Adjust the air shutter
opening by loosening
the adjustment screw
with a screwdriver, then
turn the air shutter to
open or close it (see
Fig. 2-2).
Too large an air shutter opening will allow too much
air into the burner, which will cause the fl ames fi rst
to shorten and then to appear to lift up off the ports.
For the bottom of the fl ames to move closer to the
ports, close the air shutter more.
If the air shutter opening is too small or closed, the
fl ames will present consistently orange tips and
become “lazy,” slowly undulating back and forth.
For propane gas, ideal settings tend to be just slightly
open. For natural gas, which generally requires less
primary air than propane, the main burner air shutter
may be nearly closed.
3. Adjust the air shutter opening and then replace the
burner.
4. Follow the lighting instructions in this manual to
light the burner.
5. Repeat steps 1-4 until the fl ames appear to touch
the burner ports, burning fairly steadily and mostly
blue (see Fig. 2-1).
6. Replace the burner, burner clip, fl avor grid, and
cooking grid (see CHANGING THE MAIN BURNER
ORIFICE section (steps 5-6).
Repeat these steps for each main burner.
AIR SHUTTER ADJUSTMENT
Important: Air shutters are preset at the factory based
on the gas the grill is built to burn. However,
altitude or other local conditions may
require air shutter adjustment for proper
combustion.
MAIN BURNER
Flames from a properly adjusted main burner with no wind
or breeze present will appear fairly steady, consistent,
and mostly blue. If the tip of a fl ame were to turn orange,
it should only do so briefl y and then become blue again.
The fl ames will appear to burn while touching the burner
ports (see Figure 2-1).
If the fl ames have orange in them and appear to undulate
slowly from side to side, or if some of them appear to lift
off the burner instead of touching it, then adjust the air
shutter, as instructed below.
CAUTION: Turn all burner control knobs to the OFF
position and turn off the gas supply at the
source before removing or adjusting a
burner.
WARNING
Wait for the burner to be cool or use heavily insulated
heat-resistant gloves when handling the burner.
Shutter Setting Flame Condition
Open too far
Flames shorten and lift off
the burner
Ideal setting
Blue fl ames just touching
burner
Closed too far
“Lazy” fl ames with orange
in them
Fig. 2-1 - Flame appearance diagram
Flame off ports Flame on ports
Fig. 2-2
Locking
screw
Air shutter