IMPORTANT SAFETY INFORMATION3INSTALLER: Please leave these instructions with the owner.OWNER: Please retain these instructions for future reference.IMPORTANT: Read these instructions carefully before installing or trying to operate this heater.WARNING: Any change to this heater or its controls can be dangerous.Improper installation or use of the heater can cause serious injury ordeath from fire, burns, explosion or carbon monoxide poisoning.WARNINGCARBON MONOXIDE POISONING: Early signs of carbon monoxide poisoning are similar to theflu with headaches, dizziness and/or nausea. If you have these signs, obtain fresh air immediately.Have the heater serviced as it may not be operating properly.The installation must conform with local codes or, in the absence of local codes, with the NationalFuel Gas Code, ANSI Z223.1.The 9830N/9830L vent-free gas heater system cannot be installed in a bedroom.Do not install the heaters in a bathroom.WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injuryor property damage. Refer to this owner's manual. Installation and service must be performed bya qualified installer; service agency or the gas supplier.To prevent malfunction and/or sooting, an unvented gas heater should be cleaned at least annuallyby a professional service person. More frequent cleaning may be required due to excessive lint fromcarpeting, etc. It is imperative that control compartments, burners and circulating air passagewaysbe kept clean.Correct placement of the ceramic fiber logs is necessary to avoid problems with sooting. Sootingcan settle on surfaces outside the heater and cause discoloration. See the appropriate sections ofthis manual for instructions.WARNING: Do not allow fans to blow directly into the fireplace. Avoid any drafts that alter burnerflame patterns. Do not place a blower inside burn area of firebox. Ceiling fans may create draftsthat alter burner flame patterns. Sooting and improper burning will occur.This is a vent-free gas-fired heater. It uses air (oxygen) from the room in which it is installed.Provisions for adequate combustion and ventilation air must be provided. Refer to installationguidelines.Children and adults should be alerted to the hazard of high surface temperature and should stayaway to avoid burns or clothing ignition.1.2.3.4.5.6.7.8.9.10.11. Young children should be carefully supervised when they are in the same room with the appliance.