Wolf OG30, Technical & Service Manual

Page: 28 / 54

Outdoor Grill (OG) Series
Theory of Operation
3-6
#814144 - Revision A - July, 2009
The gas and air travel through the venturi
tube and the mixing tube where the gas
and air mix together. The gas and air
mixture then enters into the burner body.
(See Figure 3-6)
The gas and air mixture then exits out of
the burner ports where it mixes with “sec-
ondary air.”, and the ports closest to the
flash tube feed the gas/air mixture into
the flash tube. With the glow igniter
energized, the gas/air mixture in the flash
tube ignites.
(See Figure 3-7)
NOTE: A lanyard is supplied with OG
appliances to hold a lit match should the
glow igniter be inoperable.
The ignition at the flash tube subsequent-
ly ignites the gas and air mixture at the
other burner ports. With the proper gas
and air mixture, a flame of natural gas
should be blue with a deep blue inner
cone and have no trace of yellow flame;
with liquid propane gas some orange tip-
ping is acceptable.
(See Figure 3-8)
NOTE: The flame should be odorless
and completely free of dangerous gases.
G A S
G A S
PR
IMA
RY A
IR
Figure 3-6. Venturi, Mixing Tube and Burner Body
Regulator
Control
Knob
Orifice
Valve
Burner Body
Mixing Tube Shutter Venturi
G A S
G A S
PR
IMA
RY A
IR
Figure 3-7. Ignition
Glow Igniter
Regulator
Control
Knob
Orifice
Valve
Mixing Tube
Flash Tube
Shutter Venturi
G A S
G A S
PR
IMA
RY A
IR
Figure 3-8. Full Ignition and Proper Flame
Glow Igniter
Regulator
Control
Knob
Orifice
Valve
Mixing Tube
Flash Tube
Shutter Venturi
Burner Body
Burner Body
Proper Flame
at Burner Ports
Ignition