York GM9, GY9, GF9 service manual PUM-A-1205, Fire Or Explosion Hazard

168106-PUM-A-1205

COMBUSTION	VENT PIPE
AIR PIPE
BLOWER	CONDENSATE
	HOSE
ACCESS
PANEL
CONTROL
BOARD
	RAIN
TRANSFORMER	GUTTER
PRESSURE	INDUCER
	HOUSING
SWITCH
	INDUCER
TUBING
	MOTOR
PRESSURE	CONDENSATE
SWITCHES	DRAIN HOSE

CONDENSATE

GAS TRAP VALVE

LIMIT

GASSWITCH REFERENCE

HOSE

BURNER BOX

FIGURE 1: Component Locations

INSTRUCTIONS FOR EXAMINING THE FURNACE INSTALLATION

It is the owner’s responsibility to ensure that an annual inspection of the entire heating portion of the unit is made by a qualified service agency.

1.Examine the heat exchanger, through a field installed access panel located on the supply air plenum. Visually examine the exte- rior sections of the vent/combustion air piping and the vent con- nectors to be sure that they are physically sound without holes or excessive corrosion.

2.Examine the vent pipe making sure it is firmly in place, that it slopes slightly upward and is physically sound without holes and all of the connections are secure.

3.Examine the return-air duct connections to make sure they are physically sound, sealed to the furnace casing, and the ducts ter- minate outside the space containing the furnace.

4.Examine the furnace casing making sure the physical support is sound without sagging, cracks or gaps. Examine the furnace base making sure it is physically sound without cracks, gaps or sagging and has a good seal.

5.Examine the furnace casing for obvious signs of deterioration.

6.Examine the burner flames to make sure they are in good adjust- ment. Refer to the pictorial sketch shown in Figure 2 as a compari- son to the actual flame.

7.NEVER . . .Store flammable materials of any kind near your fur- nace. Gasoline, solvents, and other volatile liquids should be stored only in approved containers outside your home. These materials vaporize easily and are extremely dangerous.

8.NEVER . . .Store cleaning materials near your furnace. Materials such as bleaches, detergents, powdered cleansers, etc., can cause corrosion of the heat exchangers.

9.NEVER . . . Use the area around your furnace as a storage area for items which could block the normal flow of air. This flow of air is required for ventilation of the various furnace components.

FIRE OR EXPLOSION HAZARD

This furnace is designed and approved for use with Nat- ural Gas and (LP) Propane Gas ONLY. DO NOT BURN ANY LIQUID FUEL OR SOLID FUEL IN THIS FURNACE.

Burning any unapproved fuel will result in damage to the furnace heat exchanger, which could result in Fire, Per- sonal Injury, and/or Property Damage.

7.Examine the furnace as outlined above in steps 1 - 6 before each heating season. Use Figure 3 for visual reference.

MAIN BURNER	END OF	BURNER
MANIFOLD	BURNER
		FLAME

YELLOW

TIPS

INNER FLAME CONES (Blue Flame)

COMBUSTION AIR TRANSITION (not shown)

FIGURE 2: Burner Flame Drawing

3EXAMINE RETURN AIR DUCT CONNECTION

BLOWER DOOR

2REMOVE THIS PANEL TO EXAMINE VENT PIPE

	4 EXAMINE					4 EXAMINE
	FURNACE
		6 REMOVE THIS				FURNACE
	CASING
				1PLACE A FIELD		CASING
		PANEL TO
5
	EXAMINE CASING	EXAMINE THE		INSTALLED ACCESS	5
		BURNER FLAMES		PANEL LOCATED IN
	FOR DETERIORATION		BURNER DOOR			EXAMINE CASING
				THE DOWNFLOW
						FOR DETERIORATION

PLENUM TO EXAMINE

THE HEAT EXCHANGER

FIGURE 3: Furnace Examination Checkpoints

2 Unitary Products Group