York GF8 Section Ii Service And Maintenance Manual, Blower Care, Motor Lubrication, Cabinet, Size

035-19992-001 Rev. A (0404)

To remove the filter you must do the following:

1.Before proceeding, be sure the area is well ventilated. Follow instruction “To turn off the appliance”. Check all metal parts and surfaces to be sure they have cooled to room temperature before you begin.

2.Remove the door by removing the retaining screw(s), if provided.

3.Remove the air filter by pulling on it. The air filter will slide out of the rack.

4.Replace throw away filter(s)) with the same size new filter(s). Throw away filter(s)) may be replaced with cleanable filter(s) at this time. Cleanable filter(s) may be cleaned as described in the manufacturer instructions or as described in these instructions.

To replace the filter after cleaning you must do the following:

5.Slide filter into place. If the filter has been cleaned, make sure it is dry before re-installing it.

6.Replace the door or cover panel and tighten the retaining screws, if provided.

7.Make sure the door is secure to the end of the filter rack and sealed to prevent leaks.

8.Follow the Operating Instructions to place the furnace back in operation.

TABLE 1: Filter Sizes

Cabinet	Side Return		Bottom/End Return
Size	in.	cm	in.	cm
B	25 x 16	64 x 41	24 x 15	61 x 38
B	25 x 16	64 x 41	24 x 15	61 x 38
C	25 x 16	64 x 41	24 x 15	61 x 38
C	25 x 16	64 x 41	24 x 15	61 x 38
D	(2) 25 x 16	(2) 64 x 41	24 x 21	61 x 53
D	(2) 25 x 16	(2) 64 x 41	24 x 21	61 x 53
D	(2) 25 x 16	(2) 64 x 41	24 x 21	61 x 53
Cabinet	Top Return (Downflow)		Top Return (Downflow)
	Cleanable Air Filters		Disposable Air Filters
Size
	in.	cm	in.	cm
B	14 x 20	(2) 25 x 51	(2) 10 x 20	(2) 25 x 51
B	14 x 20	(2) 25 x 51	(2) 10 x 20	(2) 25 x 51
C	16 x 20	(2) 41 x 51	(2) 16 x 20	(2) 41 x 51
C	16 x 20	(2) 41 x 51	(2) 16 x 20	(2) 41 x 51
D	20 x 20	(2) 51 x 51	(2) 20 x 20	(2) 51 x 51
D	20 x 20	(2) 51 x 51	(2) 20 x 20	(2) 51 x 51
D	N/A	N/A	N/A	N/A

How to Clean your Filter

High-velocity filters may be cleaned with a vacuum cleaner or washed with a garden hose. Be sure to shake off excess water and allow filter to completely dry before re-installing the filter.

Blower Care

Even with good filters properly in place, blower wheels and motors will become dust laden after long months of operation. The entire blower assembly should be inspected annually. If the motor and wheel are heavily coated with dust, they can be brushed and cleaned with a vac- uum cleaner. If the blower cannot be properly cleaned without removing it from the furnace, then call a qualified service agency. Only a qualified service agency can perform this service.

Make sure you DO NOT move the clip on weight on the indoor fan wheel when cleaning the wheel. This weight is used to balance the wheel. Moving the weight will cause the fan wheel to vibrate.

Motor Lubrication

The motors in these furnaces are permanently lubricated, and do not require periodic oiling.

SECTION II: SERVICE AND MAINTENANCE MANUAL

SAFETY SECTION

This section has been designed to assist a qualified service agency in performing service and maintenance on this appliance. The homeown- ers and/or end user must never attempt to perform any service or main- tenance on the appliance especially when it involves the removal or adjustment of any parts and/or components.

The following safety rules must be followed when servicing the furnace.

ELECTRIC SHOCK, FIRE OR EXPLOSION HAZARD

Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death or property damage.

Improper servicing could result in dangerous operation, serious injury, and death or property damage.

•Before servicing, disconnect all electrical power to the fur- nace.

•When servicing controls, label all wires prior to discon- necting. Reconnect wires correctly.

•Verify proper operation after servicing.

FURNACE MAINTENANCE SECTION

The furnace should be cleaned and adjusted by a certified dealer or qualified service contractor once a year or before the start of every heating season. The following items must be cleaned and serviced or replaced if there are signs of deterioration.

1.The vent terminal screen (if applicable).

2.The furnace vent and combustion air intake passageways. Should it be necessary to service the vent/air intake system, the manufac- turer recommends this service be conducted by a qualified service agency. The operation of this appliance requires the reassembly and resealing of the vent/air intake system.

3.The furnace burners, ignitor and flame sensor.

FURNACE CLEANING SECTION

NOTE: The cleaning operations listed below must be performed only by a qualified service agency.

Burner Removal/Cleaning

The main burners should be checked periodically for dirt accumulation. If cleaning is required, follow this procedure:

1.Turn off the electrical power to the unit.

2.Turn off the gas supply at the external manual shut-off valve and loosen the ground union joint.

3.Remove the upper access panel.

6 Unitary Products Group