The direct-spark ignition (DSI) module illustrated in Figure 5-67 is a low-voltage, solid-state unit that controls the gas valve, monitors the burner flame, and generates…
Category: Thermostats and Humidistats
An intermittent pilot ignition module is a solid-state ignition device used to automatically light a pilot burner and simultaneously energize (operate) the main gas valve…
Electronic (solid-state) ignition systems have been developed to improve the energy efficiency of gas furnaces, boilers, and water heaters. These electronic ignition systems replace the…
A pilot-pressure switch operates on the same principle as the gaspressure switch used in the manifold of the gas-fired furnace or boiler. Its function is…
The pilot burner should ignite the main burner quietly and reliably under all operating conditions, including low gas supply pressure. The ignition of the main…
The pilot flame must be adjusted for proper color and size. Appliance manufacturers refer to this procedure as pilot flame adjustment or pilot gas adjustment.…
Read the appliance manufacturer’ s lighting instructions before attempting to light the pilot burner. The basic procedure for lighting a pilot is as follows: 1.…
The procedure for replacing a pilot burner orifice depends on whether it is a spud or an insert orifice. For a Honeywell spud orifice, the…
Always follow the manufacturer’ s instructions when installing a new pilot burner. Read these instructions very carefully before beginning any work. If no installation instructions…
A pilot burner is a device used in a gas-fired appliance to light the main gas burners and generate sufficient millivoltage to operate a thermocouple…