3SAFETY CONSIDERATIONSImproper installation, adjustment, alteration, service,maintenance, or use can cause explosion, fire, electricalshock or other conditions which may cause personalinjury or property damage. Consult a qualified installer,service agency, or your distributor or branch forinformation or assistance. The qualified installer oragency must use factory--authorized kits or accessorieswhen modifying this product. Refer to the individualinstructions packaged with the kits or accessories wheninstalling.Follow all safety codes. Wear safety glasses and workgloves. Use quenching cloths for brazing operations andhave a fire extinguisher available. Read these instructionsthoroughly and follow all warnings or cautions attached tothe unit. Consult local building codes and appropriatenational electrical codes (in USA, ANSI/NFPA70,National Electrical Code (NEC); in Canada, CSA C22.1)for special requirements.It is important to recognize safety information. This is thesafety--alert symbol . When you see this symbol on theunit and in instructions or manuals, be alert to thepotential for personal injury.Understand the signal words DANGER, WARNING,CAUTION, and NOTE. These words are used with thesafety--alert symbol. DANGER identifies the most serioushazards which will result in severe personal injury ordeath. WARNING signifies hazards which could result inpersonal injury or death. CAUTION is used to identifyunsafe practices, which may result in minor personalinjury or product and property damage. NOTE is used tohighlight suggestions which will result in enhancedinstallation, reliability, or operation.ELECTRICAL 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 onepower switch.! WARNINGUNIT OPERATION AND SAFETY HAZARDFailure to follow this warning could cause personalinjury, death and/or equipment damage.Puronr (R--410A) refrigerant systems operate athigher pressures than standard R--22 systems. Do notuse R--22 service equipment or components on Puronrefrigerant equipment.! WARNINGPERSONAL INJURY AND ENVIRONMENTALHAZARDFailure to follow this warning could cause personalinjury or death.Relieve pressure and recover all refrigerant beforesystem repair or final unit disposal.Wear safety glasses and gloves when handlingrefrigerants. Keep torches and other ignition sourcesaway from refrigerants and oils.! WARNINGCUT HAZARDFailure to follow this caution may result in personalinjury.Sheet metal parts may have sharp edges or burrs. Usecare and wear appropriate protective clothing, safetyglasses and gloves when handling parts and servicingheat pump units.CAUTION!