Heatiator CD4842IR-C, CD4236ILR-C Maintenance Tasks-Qualified Service Technician, Logs, Firebox

B.Maintenance Tasks-Qualified Service Technician

The following tasks must be performed by a qualified ser- vice technician.

Gasket Seal and Glass Assembly Inspection

Frequency: Annually

By: Qualified Service Technician

Tools needed: Protective gloves, drop cloth and a stable work surface.

•Inspect gasket seal and its condition.

•Inspect fixed glass assembly for scratches and nicks that can lead to breakage when exposed to heat.

•Confirm there is no damage to glass or glass frame. Replace as necessary.

•Verify that fixed glass assembly is properly retained and attachment components are intact and not damaged. Replace as necessary.

Logs

Frequency: Annually

By: Qualified Service Technician

Tools needed: Protective gloves.

•Inspect for damaged or missing logs. Replace as neces- sary. Refer to Section 14 for log placement instructions.

•Verify correct log placement and no flame impingement causing sooting. Correct as necessary.

Firebox

Frequency: Annually

By: Qualified Service Technician

Tools needed: Protective gloves, sandpaper, steel wool, cloths, mineral spirits, primer and touch-up paint.

•Inspect for paint condition, warped surfaces, corrosion or perforation. Sand and repaint as necessary.

•Replace fireplace if firebox has been perforated.

Control Compartment and Firebox Top

Frequency: Annually

By: Qualified Service Technician

Tools needed: Protective gloves, vacuum cleaner, dust cloths

•Vacuum and wipe out dust, cobwebs, debris or pet hair. Use caution when cleaning these areas. Screw tips that have penetrated the sheet metal are sharp and should be avoided.

•Remove all foreign objects.

•Verify unobstructed air circulation.

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.
• Replace Glowing embers with new dime-size pieces.
	DO NOT block ports or obstruct lighting paths. Refer to
	Section 14 for proper ember placement.
•	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. (IPI only)

Figure 3.1 IPI Pilot Flame Patterns

Heatilator • CD4236IR-C, CD4842IR-C • 2207-900 Rev. J • 11/11 15