Conventional Burner - Whirlpool 4322452 Service Manual

Refer to Figure 3-32 for the following sequence.

CONVENTIONAL BURNER

When a main burner control knob q is turned to the "lite" position, the gas valve r opens, and
gas flows through the pressure regulator s into the manifold t through the open valve. As gas
passes through the valve and its orifice, it is directed into the venturi u, where it mixes with
primary air to create the proper mixture necessary for combustion.
At the same time, line voltage is applied through the ignitor switch v, to the ignitor spark module
w, which produces high-voltage pulses to all of the spark ignitors x. The pulses cause a spark
y to occur between the spark ignitor electrode, and the ground strap (bracket) z. The gas and
air mixture at the burner head,
and into the flash tube
combusted gas flashes back through the tube, and ignites the burner.
120 VAC
LINE VOLTAGE
PRESSURE
REGULATOR
3
GAS INLET
flows through the three climber ports in the side of the head,
11
. As gas flows through the flash tube, it is ignited by the spark. The
12
IGNITOR
7
MODULE
9
SPARK
IGNITOR SWITCH
4
GAS
MANIFOLD
SPARK
8
10
SPARK
GROUND STRAP
IGNITOR
(BRACKET)
FLASH
TUBE
12
CLIMBER
PORTS (3)
6
2
5
GAS VALVE
AIR
SHUTTER
OFF
1
BURNER
CONTROL
KNOB
Page 3-23
BURNER
11
VENTURI
Figure 3-32