Direct-spark ignition units produce an electric spark. This spark directly ignites the main burner.
The operational sequence of direct-spark ignition:
- The thermostat calls for heat.
- The ignition module is energized and starts to produce a voltage spark.
- the redundant gas valve is also energized.
- The spark created by the module is carried by the electrode. There it ignites the gas to create a flame.
- All burners will begin operating. When the thermostat is satisfied, it will de-energize the ignition system.