UNVENTED (VENT-FREE)NATURAL GAS LOG HEATERALSO DESIGN-CERTIFIED AS A VENTED DECORATIVE APPLIANCEOWNER’S OPERATION AND INSTALLATION MANUALSave this manual for future referenceWARNING: If the information in thismanual is not followed exactly, a fire orexplosion may result causing propertydamage, personal injury, or loss of life.— Do not store or use gasoline or otherflammable vapors and liquids in thevicinity of this or any other appliance.— WHAT TO DO IF YOU SMELL GAS• Do not try to light any appliance.• Do not touch any electrical switch; donot use any phone in your building.• Immediately call your gas supplier froma neighbor’s phone. Follow the gassupplier’s instructions.• If you cannot reach your gas supplier,call the fire department.— Installation and service must be per-formed by a qualified installer, serviceagency, or the gas supplier.WARNING: Improper installation, adjust-ment, alteration, service, or maintenancecan cause injury or property damage.Refer to this manual for correct installa-tion and operational procedures. Forassistance or additional informationconsult a qualified installer, serviceagency, or the gas supplier.WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room inwhich it is installed. Provisions for adequate combustion and ventilation air must beprovided. Refer toAir for Combustion and Ventilation section on page 4 of this manual.®PILOTOFFONLOREMOTEOFFONHICFS18NRAVS18NRAVS24NRAVS30NRA"A" Model18", 24", and 30"Remote-ReadyDESA INTERNATIONALThis appliance may be installed in an aftermarket* manufactured (mobile) home, where not prohibited bystate or local codes.* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturerWARNING: This appliance is for in-stallation only in a solid-fuel burningmasonry or UL127 factory-built fire-place, or in an approved ventless fire-box. It is design-certified for these in-stallations in accordance with ANSZ21.11.2. Exception: Do not install thisappliance in a factory-built fireplacethat includes instructions stating it hasnot been tested or should not be usedwith unvented gas logs.