Hearth and Home Technologies TRUE-36 Burner Ignition and Operation, IPI Pilot Flame Patterns

Burner Ignition and Operation

Frequency: Annually

By: Qualified Service Technician

Tools needed: Protective gloves, vacuum cleaner, whisk broom, flashlight, voltmeter, indexed drill bit set, and a manometer.

•Verify burner is properly secured and aligned with pilot or igniter.

•Clean off burner top, inspect for plugged ports, corrosion or deterioration. Replace burner if necessary.

•Verify batteries have been removed from battery back-up IPI systems to prevent premature battery failure or leaking.

•Check for smooth lighting and ignition carryover to all ports. Verify that there is no ignition delay.

•Inspect for lifting or other flame problems.

•Verify air shutter setting is correct. See Section 14 for required air shutter setting. Verify air shutter is clear of dust and debris.

•Inspect orifice for soot, dirt and corrosion. Verify orifice size is correct. See Service Parts List for proper orifice sizing.

•Verify manifold and inlet pressures. Adjust regulator as required.

•Inspect pilot flame pattern and strength. See Figure 3.1 for proper pilot flame pattern. Clean or replace orifice spud as necessary.

•Inspect IPI flame sensing rod for soot, corrosion and deterioration. Polish with fine steel wool or replace as required.

•Verify that there is not a short in flame sense circuit by checking continuity between pilot hood and flame sensing rod. Replace pilot as necessary.

Figure 3.1 IPI Pilot Flame Patterns

16 Heat & Glo • TRUE-36, TRUE-42, TRUE-50 • 2282-900 Rev. D • 8/12