440 04 4801 00Specifications are subject to change without notice.2SAFETY CONSIDERATIONSImproper ins tallation, adjus tment, alteration, serv ic e,maintenance, or use can cause explosion, fire, electrical shock,or other conditions which may cause death, personal injury, orproperty damage. Consult a qualified installer, service agency,or your distributor or branch for information or assistance. Thequalified installer or agency must use factory−authorized kits oraccessories when modifying this product. Refer to the individualinstructions packaged with the kits or accessories wheninstalling.Follow all safety codes. Wear safety glasses, protective clothing,and work gloves. Use quenching cloth for brazing operations.Have fire extinguisher available. Read these instructionsthoroughly and follow all warnings or cautions included inliterature and attached to the unit. Consult local building codes,the current editions of the National Fuel Gas Code (NFCG)NFPA 54/ANSI Z223.1, and the National Electrical Code (NEC)NFPA 70.In Canada refer to the current editions of the National standardsof Canada CAN/CSA−B149.1 and .2 Natural Gas and PropaneInstallation Codes, and Canadian Electrical Code CSA C22.1.Recognize safety information. This is the safety−alert symbol. When you see this symbol on the unit and in instructions ormanuals, be alert to the potential for personal injury.Understand these signal words; DANGER, WARNING, andCAUTION. These words are used with the safety−alert symbol.DANGER identifies the most serious hazards which will result insevere personal injury or death. WARNING signifies hazardswhich could result in personal injury or death. CAUTION is usedto identify unsafe practices which may result in minor personalinjury or product and property damage. NOTE is used tohighlight suggestions which will result in enhanced installation,reliability, or operation.! WARNINGPERSONAL INJURY, AND/OR PROPERTYDAMAGE HAZARDFailure to carefully read and follow this warning couldresult in equipment malfunction, property damage,personal injury and/or death.Installation or repairs made by unqualified persons couldresult in equipment malfunction, property damage,personal injury and/or death.The information contained in this manual is intended foruse by a qualified service technician familiar with safetyprocedures and equipped with proper tools and testinstruments.Installation must conform with local building codes andwith the Natural Fuel Gas Code (NFCG) NFPA 54/ANSIZ223.1, and National standards of CanadaCAN/CSA−B149.1 and .2 Natural Gas and PropaneInstallation Codes.! WARNINGELECTRICAL SHOCK HAZARDFailure to follow this warning could cause personalinjury or death.Before performing service or maintenance operationson unit, always turn off main power switch to unit andinstall lockout tag. Unit may have more than one powerswitch.! WARNINGCARBON MONOXIDE POISONING AND FIREHAZARDFailure to follow safety warnings could result in personalinjury, death, and/or property damage.This furnace is not designed for use in mobile homes,trailers or recreational vehicles.! CAUTIONCUT HAZARDFailure to follow this caution may result in damagepersonal injury.Sheet metal parts may have sharp edges or burrs. Usecare and wear appropriate protective clothing, safetyglasses and gloves when handling parts and servicingfurnaces.