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BURNER HEAD
When gas leaves the orifice, it passes through the venturi, and is forced into the burner head. As
the gas passes between the orifice and the burner head, primary air is mixed with the gas to form
a combustible mixture. The burner head disperses the gas/air mixture for ignition.
In addition to the burner ports at the top of the burner head, there are also ports along the side of
the burner, called
charge ports
and
climber ports
. The charge ports inject gas down the flash tube
to be ignited by the pilot flame. The climber ports allow the flame to climb the side of the burner head
and ignite the gas at the top ports.
Figure 3-13
Flash Tube
Charge Ports
Climber Ports
Top Burner Ports