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2. Do not use this unit if any part has been under water. Immediately call a qualified service agency to inspect the unit and to replace any part of the control system and any gas control which has been under water. 3. Never obstruct the vent grilles, or any ducts that provide air to the unit. Air must be provided for proper combustion and ventilation of flue gases. 441 01 2613 02 [_ Frozen Water Pipe Hazard Ifyourfurnace remains off for an extended time, the pipes in your home could freeze and burst, resulting in serious water damage. If the structure will be unattended during cold weather you should FROZEN AND BURST WATER PIPE HAZARD Failure to protect against the risk of freezing could result in property damage. Do not leave your home unattended for long periods during freezing weather without turning off water supply and draining water pipes or otherwise )rotecting against the risk of frozen pipes and resultant damage. Your furnace is designed solely to provide a safe and comfortable living environment. The furnace is NOT designed to ensure that water pipes will not freeze. It is equipped with several safety devices that are designed to turn the furnace off and prevent it from restarting in the event of various potentially unsafe conditions. 2. Installation CARBON MONOXIDE POISONING HAZARD. Failure to properly vent this furnace or other appliances could result in death or personal injury. If this furnace is replacing a previously common- vented furnace, it may be necessary to resize the existing vent system to prevent oversizing problems for the other remaining appliances(s). See Venting and Combustion Air Check in the 5. Gas Vent Installation section of this instruction. Location and Clearances If furnace is a replacement, it is usually best to install the furnace where the old one was. Choose the location or evaluate the exist ing location based upon the minimum clearance and furnace dimensions (Figure 1 or Figure 2). CARBON MONOXIDE POISONING HAZARD. Failure to follow safety warnings could result in death or personal injury. Do NOT operate furnace in a corrosive atmosphere containing chlorine, fluorine or any other damaging chemicals which could harm the furnace and vent system, and permit spillage of combustion products into an occupied space. Refer to 4. Combustion & Ventilation Air section, Contaminated Combustion Air for combustion air evaluation and remedy. Installation Requirements 1. Install furnace level. 2. This furnace is NOT to be used for temporary heat of buildings or structures under construction. 3. Install furnace as centralized as practical with respect to the heat distribution system. take these precautions. Turn off the water supply to the structure and drain the water lines if possible and add an antifreeze for potable water to drain traps and toilet tanks. Open faucets in appropriate areas. -or- Have someone check the structure frequently during cold weather to make sure it is warm enough to prevent pipes from freezing. Instruct them on a service agency to call to provide service, if required. -or 3. Install a reliable remote sensing device that will notify somebody of freezing conditions within the home. 4. Install the vent pipes as short as practical. (See 5. Gas Vent Installation section). 5. Do NOT install furnace directly on carpeting, tile or other combustible material other than wood flooring. 6. Maintain clearance for fire safety and servicing. A front clearance of 24" is minimum for access to the burner, controls and filter. See clearance requirements in Figure 1 or Figure 2. 7. Use a raised base if the floor is damp or wet at times. 8. Residential garage installations require: • Burners and ignition sources installed at least 18" (457 mm) above the floor. • Furnace must be located or physically protected from possible damage by a vehicle. If the furnace is to be suspended from the floor joists in a basement or a crawl space or the rafters in an attic, it is necessary to use steel pipe straps or an angle iron frame to attach the fur nace. These straps should be attached to the furnace bottom side with sheet metal screws and to the rafters or joists with bolts. The preferred method is to use an angle iron frame bolted to the rafters or joists. 10. This furnace may be used for construction heat provided that: • The furnace is permanently installed with all electrical wiring, piping, venting and ducting installed according to these installation instructions. A return air duct is provided, sealed to the furnace casing, and terminated outside the space containing the furnace. This prevents a negative pressure condition as created by the circulating air blower, causing a flame rollout and/or drawing combustion products into the structure. • The furnace is controlled by a thermostat. It may not be "hot wired" to provide heat continuously to the structure without thermostatic control. • Clean outside air is provided for combustion. This is to minimize the corrosive effects of ad...

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