Lennox International Inc 15GCSX manual Maintenance, Typical Flame Appearance, Service Reminder

Maintenance	Distorted flame or yellow tipping of the natural gas
	flame (or long yellow tips on LP/propane flame) may be
To maintain efficiency and longevity, your equipment	caused by one or more of the following: lint or dirt inside
must be serviced yearly by a qualified service technician.
	the burner or burner ports; lint or dirt at the air inlet be-
Failure to provide proof of proper service can void the
	tween the burner and manifold pipe; or an obstruction
warranty.
	over the burner orifice.
WARNING
	Use a soft brush or vacuum to clean the affected areas.
Electric shock hazard. Can cause	Typical Flame Appearance
injury or death. Before attempting to		Heat Exchanger
perform any service or maintenance,
turn the electrical power to unit OFF at	Burner
disconnect switch(es). Unit may have
multiple power supplies.
Filters
Filter(s) must be installed in the return air system. Filters	Gas Manifold	Burner
should be checked monthly and replaced when neces-
sary. Take note of air flow direction marking on filter frame		Flame
		(Blue Only)
when reinstalling filters. Replace disposable or clean per-
manent type as necessary. DO NOT replace permanent		Figure 3
type with disposable.
NOTE − Filters must be U.L.C. approved or equivalent for	Vent Outlet
use in Canada.	Visually inspect vent outlet periodically to make sure that
Motors	the there is no buildup of soot and dirt . If necessary, clean
	to maintain adequate opening to discharge flue products.

All motors are permanently lubricated and require no
further lubrication. Motors should be cleaned yearly to			Service Reminder
prevent the accumulation of dust and dirt on the windings
		Call a qualified service technician if the unit is inopera-
or motor exterior.
		tive. Before calling, always check the following to be
Coil		sure service is required:
Dirt and debris should not be allowed to accumulate on			1 − Be sure electrical disconnect switches are ON.
the coil surfaces or other parts in the air conditioning cir-			2 − Check room thermostat for proper setting.
cuit. Cleaning should be performed as often as neces-
			3 − Replace any blown fuses or reset circuit breakers.
sary. Use a brush, vacuum cleaner attachment, or other
suitable means. If water is used to clean the coil, be sure			4 − Gas valve should be ON.
the power to unit is shut off prior to cleaning.			5 − Air filters should not be plugged, limiting air flow.
NOTE − Care should be used when cleaning the coil so
			6 − Make sure all access panels are in place.
that the coil fins are not damaged.
Do not permit the hot condenser air discharge to be ob-			Repair Parts List
structed by overhanging structures or shrubs.
		The following repair parts are available through Lennox
Burners		dealers. When ordering parts, include the complete unit
		model number listed on the unit rating plate.
	WARNING	CONTROL PANEL PARTS		HEATING PARTS
		Ignition control board		Heat exchanger assembly
		Contactor		Combustion air inducer
	Danger of explosion and fire. Can cause
		Transformer		Orifices
	injury or product or property damage.
		Capacitor		Burners
	Periodically inspect burner flame to en-
		BLOWER PARTS		Gas valve
	sure proper unit operation.
		Blower wheel		Manifold
Inspect the burner flame periodically during heating sea-
		Blower Motor		Ignitor
son to ensure proper burner operation.		Motor mounting arm		Limit control
Light the burners and allow unit to operate for a few min-		Blower housing		Rollout switch
utes to establish normal burning conditions. Observe the		COOLING PARTS		Pressure switch
burner flames. Flames should be predominantly blue in		Compressor
color and strong in appearance. Verify that all burners		Condenser fan motor/blades
are lit and that the flame does not impinge on the sides of		Coils
the heat exchanger. See figure 3.		Drain pan

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