.2 START UP & SHUTDOWN GENERAL INSTRUCTIONS . . . . . . . . . . . . . . . . . . .2 FOR YOUR SAFETY, READ BEFORE OPERATING: . . . . . . . . . . . . . . . . . . . . . .3 WHAT TO DO IF YOU SMELL GAS: . . . .3 LIGHTING INSTRUCTIONS . . . . . . .3 SHUTDOWN INSTRUCTIONs . . . . . . . .4 TURNing OFF GAS TO FURNACE . . . . 4 YOUR FURNACE'S FILTER WHATITDOES . . . . . . . . . . . . . . . . . . . .4 FREQUENCY OF CHECKING FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . .4 UPFLOW/HORIZONTAL . . . . . . . . . . . . .5 INSTALLATIONS . . . . . . . . . . . . . . . . . . .5 LOCATING/REMOVING FILTERS . . . . .5 HOW TO CLEAN YOUR FURNACE'S FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . .5 MOTOR LUBRICATION . . . . . . . . . . . . . .5 INSTALLATION & MAINTENANCE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . 5 KEEP THIS MANUAL FOR FUTURE REFERENCE WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life. -Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. -WHAT TO DO IF YOU SMELL GAS i Do not try to light any appliance. i Do not touch any electrical switch; do not use any phone in your building. i Immediately call your gas supplier from a neighboris phone. Follow the gas supplieris instructions. i If you cannot reach your gas supplier, call the fire department. -Installation and service must be performed by a qualified installer, service agency or the gas supplier. 035-14411-000 REV A (899) Form 650.74-O2Y 035-14411-000 REV A (899) Form 650.74-O2Y Congratulations . . . On your purchase of one of the most versatile furnaces available in the industry today. This compact, energy-efficient furnace has been precision designed, manufactured of high-quality materials and has passed many rigorous inspections and tests to ensure many years of satisfactory service. This booklet is meant to increase your understanding of your unit, tell you how to operate it efficiently and how to obtain the greatest measure of comfort at the lowest operating expense. Please read this booklet thoroughly. We appreciate your interest in our product and your decision to purchase our furnace. Enjoy your comfort. HOW YOUR GAS FURNACE WORKS Your furnace is a very easy appliance to take for granted. Season after season, it sits there in your home, keeping you warm and comfortable. For this reason, you may never have given much thought to the way your furnace operates. In order to get the safest and most efficient operation from your furnace, though, you should understand how your furnace does its job. When you set your thermostat to provide more heat in your home, you are starting the heating cycle of the furnace. First, the inducer motor starts to purge the heat exchanger of any remaining gasses. Next, the hot surface ignitor glows and after a warm--up period the gas valve opens and ignition occurs. A short time later the blower starts and distributes the warm air throughout the home. When the temperature set on your thermostat is reached, the gas valve closes, the main burners are turned off, and the blower continues to run until the remaining warm air in the system is distributed. When the blower stops, the heating cycle has ended. KEEP THE FURNACE AREA CLEAR 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. WARNING Do not block or obstruct air openings: 1. On the furnace. 2. Air openings communicating with the air in which the furnace is installed. 3. The spacings around the furnace. NEVER. . . store flammable materials of any kind near your furnace. Gasoline, solvents, and other volatile liquids should be stored only in approved containers outside your home. These materials vaporize easily and are extremely dangerous. NEVER. . . store cleaning materials near your furnace. Materials such as bleaches, detergents, powdered cleansers, etc., can cause corrosion of the heat exchangers. WARNING [ Insulating materials may be flammable. When a furnace is installed in an attic or other insulated space, or if insulation is added, examine the furnace area to ensure that the furnace is kept clear and free of insulation. START-UP & SHUTDOWN - GENERAL INSTRUCTIONS Read and follow these procedures CAREFULLY and COMPLETELY. Before attempting to start your furnace, always do the following things FIRST: i Turn the thermostat OFF. i Open windows or make other provisions to ventilate the area around the furnace. Unitary Products Group 035-14411-000 REV A (899) Form 650.74-O2Y i If the blower is running, wait until it shuts off automatically. WARNING Turn off all electrical power to the furnace. i Make sure all metal surfaces of the furnace have cooled to room temperature before beginning. FOR YOUR SAFETY, READ BEFORE OPERATING: WARNING [ If you do n...