BILTMORE SPLIT OAK, SEASONAL OAK, AND SMOKY MOUNTAIN OAK LOGS Variable Manually-Controlled Models Also Designed Certified As Vented Decorative Appliance 18", 24", and 30" Variable Manually-Controlled Models CGD3018N CGD3924N CGD3930N CRL2718N CCL3924N CRL3124N CCL3018N 18", 24" and 30" Thermostatically-Controlled Models CGD3924NT CGD3930NT CGD3018NT CCL3018NT CCL3924NT CCL3930NTA Patent Pending (Smoky Mountain Oak Model Shown) WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. — Do not store or use gasoline or other flammable vapors and liquids in the vicinity 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; do not use any phone in your building. • Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. • If you cannot reach your gas supplier, call the fire department. — Installation and service must be performed by a qualified installer, service agency, or the gas supplier. WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage. Refer to this manual for correct installation and operational procedures. For assistance or additional information consult a qualified installer, service agency, or the gas supplier. WARNING: This is an unvented 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 Air for Combustion and Ventilation section on page 4 of this manual. WARNING: This appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built fireplace, or in an approved ventless firebox. It is design-certified for these installations in accordance with ANSI Z21.11.2. Exception: Do not install this appliance in a factory-built fireplace that includes instructions stating it has not been tested or should not be used with unvented gas logs. This appliance may be installed in an aftermarket,* permanently located, manufactured (mobile) home, where not prohibited by local codes. This appliance is only for use with type of gas indicated on the rating plate. This appliance is not convertible for use with other gases. * Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer 2 TABLE OF CONTENTS SAFETY INFORMATION TABLE OF CONTENTS SAFETY INFORMATION ............................................................ 2 PRODUCT IDENTIFICATION ..................................................... 3 UNPACKING ............................................................................... 4 LOCAL CODES ........................................................................... 4 PRODUCT FEATURES .............................................................. 4 AIR FOR COMBUSTION AND VENTILATION ........................... 4 INSTALLATION ........................................................................... 7 OPERATING HEATER .............................................................. 17 INSPECTING BURNERS.......................................................... 20 CLEANING AND MAINTENANCE ............................................ 20 SPECIFICATIONS .................................................................... 21 TROUBLESHOOTING .............................................................. 22 OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB .. 25 ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ....... 26 REPLACEMENT PARTS .......................................................... 36 SERVICE HINTS....................................................................... 36 TECHNICAL SERVICE ............................................................. 36 ACCESSORIES ........................................................................ 36 OWNER’S REGISTRATION ..................................................... 37 PARTS CENTRAL..................................................................... 39 WARRANTY INFORMATION ...................................... Back Cover SAFETY INFORMATION WARNINGS IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning. DANGER: Carbon monoxide poisoning may lead to death! Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, or nausea. If you have these signs, the heater may not be working properly. Get fresh air at once! Have heater serviced. Some people are more affected by carbon monoxide than others. These include pregnant women, people with heart or lung disease or anemia, those under the influence of alcohol, and those at high altitudes. Natural Gas: Natural gas is odorless. An o...