17General InformationAAON® V3 Series indoor air handling unitshave been designed for indoor installationonly. Units are assembled, wired, chargedwith dry nitrogen and run-tested at thefactory. V3 Series units are not intended forresidential use. Startup and service must beperformed by a Factory Trained ServiceTechnician.Certification of Gas Heat Modelsa. Certified as a Category IV forced airfurnace with or without cooling.b. Certified for indoor installation.Certification of Steam or Hot Water HeatModelsa. Certified as a forced air heating systemwith or without cooling.b. Certified for indoor installation only.Certification of Electric Heat Modelsa. Certified as an electric warm air furnacewith or without cooling.b. Certified for indoor installation only.Certification of Cooling Modelsa. Certified as a commercial central airconditioner with or without electricallyoperated compressors.b. Certified for indoor installation only.c. Certified with refrigerant R-410A coils orwith chilled water cooling coils.Improper installation, adjustment,alteration, service or maintenance cancause property damage, personalinjury or loss of life. Startup andservice must be performed by aFactory Trained Service Technician. Acopy of this IOM should be kept withthe unit.WARNINGThese units must not be used forheating or cooling at any time duringany phase of construction. Very lowreturn air temperatures, harmfulvapors, and misplacement of thefilters will damage the unit and itsefficiency.CAUTIONThis equipment is protected by astandard limited warranty under thecondition that initial installation,service, startup and maintenance isperformed according to theinstructions set forth in this manual.This manual should be read in itsentirety prior to installation and beforeperforming any service ormaintenance work.Equipment described in this manual isavailable with many optionalaccessories. If you have questionsafter reading this manual in itsentirety, consult other factorydocumentation or contact your AAONSales Representative to obtain furtherinformation before manipulating thisequipment or its optional accessoriesCAUTION