Carrier Furnace owner manual Safety Considerations

SAFETY CONSIDERATIONS

Installing and servicing of heating equipment can be hazardous due

to gas and electrical components. Only trained and qualified personnel should install, repair, or service heating equipment.

Untrained personnel can perform basic maintenance flmctions such as cleaning and replacing air filters. All other operations must be

performed by trained service personnel. Observe safety precautions in this manual, on tags, and on labels attached to the furnace and other safety precautions that may apply.

Recognize safety information. This is the safety-alert symbol /_.

When you see this symbol on the furnace and in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, CAUTION,

and NOTE. DANGER, WARNING, and CAUTION are used with

the safety-alert symbol. DANGER identifies the most serious

hazards which will result in severe personal injury or death.

WARNING signifies hazards which could result in personal injury

or death. CAUTION is used to identify unsafe practices which

may result in minor personal injury or product and property

damage. NOTE is used to highlight suggestions which will result

in enhanced installation, reliability, or operation.

To minimize the possibility of serious personal injury, fire, damage

to your furnace, or improper operation, carefully follow these

safety rules which apply to both direct-vent and non-direct vent applications:

• Your new gas furnace may have been installed in one of two

ways, as a direct-vent (2-pipe-Fig. 2) application or as a

non-direct vent (l-pipe-Fig. 3) application.

•In a direct-vent (2-pipe)application, your furnace uses air

from outside the home for combustion and vents flue gas to the outdoors. This type of application will have two pipes running from the furnace to the outdoors. In some cases, the inlet air pipe may be located in an area that has access to outdoor air, such as an attic. In all cases, the outlet vent pipe must be routed to the

outdoors. (See Fig. 2.) In this application, the vent and

air-intake pipes nmst terminate outside the structure and must not be obstructed in any way. Do not block or obstruct air openings on furnace or spaces around furnace.

•In a non-direct vent (1-pipe) application, your furnace uses

air from adjacent to the furnace for combustion and vents flue gas to the outdoors. This type of application will have only one pipe running from the furnace to the outdoors. (See Fig. 3.) The other pipe will terminate in the same space as the furnace and is

the source of combustion air for your furnace. Therefore, the furnace must not be enclosed in an airtight room or be sealed behind solid doors. It must have adequate airflow for efficient

combustion and safe ventilation. Do not obstruct the

combustion-air pipe in any way. The vent pipe nmst terminate outside the structure and must not be obstructed in any way. Do not block or obstruct air openings or space around furnace.

FIRE OR EXPLOSION HAZARD

Failure to follow warnings could result in personal injury, death, or property damage.

Keep insulation clear of furnace and maintain clearances shown on unit clearance label.

Do not keep combustible materials, gasoline, and other

flammable liquids or vapors around your furnace.

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Fig. 2 - Exterior Vent Pipes

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Fig. 3 - Interior Combustion - Air Pipe