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York Model Gy8s User Instructions

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    Page 1 035-20465-001 Rev. A (0704) USER’S INFORMATION, MAINTENANCE AND SERVICE MANUAL HIGH EFFICIENCY TUBULAR HEAT EXCHANGER SERIES MODELS: GY8S / GM8S / LY8S / LM8S / LF8 (Single Stage Upflow / Horizontal / LoNOx) EFFICIENCY RATING CERTIFIED This product was manufactured in a plant whose quality system is certified/registered as being in conformity with ISO 9001. The manufacturer recommends that the user read all sec- tions of this manual and keep the manual for future refer- ence. SECTION I: USER’S...
    Page 2 035-20465-001 Rev. A (0704) 2Unitary Products Group 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...
    Page 3 035-20465-001 Rev. A (0704) Unitary Products Group3 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 oper- ation from your furnace, you should understand how your furnace does its job. When you set your thermostat to provide more heat in your home, you...
    Page 4 035-20465-001 Rev. A (0704) 4Unitary Products Group FURNACE USER MAINTENANCE Every time the filters are changed the following items should be visually inspected: • Check combustion air and vent pipe for blockage or leakage. • Check all components to be sure they are in good condition and that there are no obvious signs of deterioration. • Check the drain lines to make sure there are no cracks or leaks. • Check for dirt or lint on any surfaces or on components. Do not try to clean any of the surfaces or...
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