Heatiator NB3933M, NB4842M, NB4236MI Maintenance and Service Tasks, Inspect Maintenance Tasks

Maintenance and Service Tasks:

Inspect		Maintenance Tasks
Doors, surrounds and fronts	1.	Assess condition of screen and replace as necessary. Recommend addition of screen if
		one is not present.
	2.	Inspect for scratches, dents or other damage and repair as necessary.
	3.	Verify no obstructions to airflow through the louvers.
	4.	Verify proper clearance to combustible household objects is maintained.
Gasket seal, glass assembly and glass	1.	Inspect gasket seal and its condition.
	2.	Inspect glass panels for scratches and nicks that can lead to breakage when exposed to heat.
	3.	Confirm there is no damage to glass or glass frame. Replace as necessary.
	4.	Verify that latches engage properly, clip studs are not stripped, and glass attachment
		components are intact and operating properly. Replace as necessary.
	5.	Clean glass using a nonabrasive cleaner such as Brasso®. Replace glass assembly if
		severely coated with silicate deposits that cannot be removed.
Valve compartment and firebox top	1.	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.
	2.	Remove any foreign objects.
	3.	Verify unobstructed air circulation.
Logs	1.	Inspect for broken, damaged, or missing logs. Replace as necessary.
	2.	Verify correct log placement and no flame impingement causing sooting. Correct as
		necessary.
Firebox	1.	Inspect for paint condition, warpage, corrosion or perforation. Sand and repaint as necessary.
	2.	Replace appliance if firebox has been perforated.
Burner ignition and operation	1.	Verify burner is properly secured and aligned with pilot or ignitor.
	2.	Clean off burner top, inspect for plugged ports, corrosion or deterioration. Replace burner if
		necessary.
	3.	Replace rockwool with new dime-sized and shaped pieces. Do not block ports or obstruct
		lighting paths.
	4.	Check for smooth lighting and ignition carryover to all ports. Verify there is no ignition delay.
	5.	Inspect for lifting or other flame problems.
	6.	Verify air shutter is clear of dust and debris.
	7.	Inspect orifice for soot, dirt or corrosion.
	8.	Verify manifold and inlet pressures. Adjust regulator as required.
	9.	Inspect pilot flame strength. Clean or replace orifice as necessary.
	10.	Inspect thermocouple/thermopile or IPI sensor rod for soot, corrosion and deterioration. Clean
		with emery cloth or replace as required.
	11.	Verify millivolt output. Replace as necessary.
Venting	1.	Inspect venting for blockage or obstruction such as birds’ nests, leaves, etc.
	2.	Confirm that termination cap remains clear and unobstructed by plants, etc.
	3.	Verify that termination cap clearance to subsequent construction (building additions, decks,
		fences or sheds) has been maintained.
	4.	Inspect for corrosion or separation.
	5.	Verify weather stripping, sealing and flashing remain intact.
	6.	Inspect draft shield to verify it is not bent, damaged or missing.
Remote controls	1.	Verify operation of remote.
	2.	Replace batteries in remote transmitters and battery-powered receivers.
	3.	Verify batteries have been removed from battery back-up in IPI systems to prevent premature
		battery failure or leaking.

Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07 39