2102990CONTENTS SECTION PAGESAFETYINFORMATION WARNINGSIMPORTANT: Read this owner’s manual carefully and completely beforetrying to assemble, operate, or service this heater. Improper use of thisheater can cause serious injury or death from burns, fire, explosion,electrical shock, and carbon monoxide poisoning.DANGERCarbon monoxide poisoning may lead to death!Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemblethe flu, with headaches, dizziness, or nausea. If you have these signs, the heater may notbe working properly. Get fresh air at once! Have heater serviced. Some people are moreaffected by carbon monoxide than others. These include pregnant women, people withheart or lung disease or anemia, those under the influence of alcohol, and those at highaltitudes.Natural Gas: Natural gas is odorless. An odor-making agent is added to the gas. The odorhelps you detect a gas leak. However, the odor added to the gas can fade. Gas may be presenteven though no odor exists.Make certain you read and understand all Warnings. Keep this manual for reference. It isyour guide to safe and proper operation of this heater.Safety Information continues on next pageSafety Information ................................................................................... 2Product Identification .............................................................................. 4Local Codes ............................................................................................. 4Unpacking ................................................................................................ 4Product Features ...................................................................................... 4Air for Combustion and Ventilation ........................................................ 5Installing .................................................................................................. 8Check Gas Type ............................................................................... 8Installation and Clearances (Vent-Free Operation Only) ................. 9Installing Damper Clamp Accessory for Vented Operation ............ 13Installing Heater Base Assembly ..................................................... 14Connecting to Gas Supply ................................................................ 16Checking Gas Connections .............................................................. 17Installing Logs .................................................................................. 19Operating Heater (Manually-Controlled Models) ................................... 20Operating Heater (Thermostatically-Controlled Model) ......................... 22Inspecting Burners ................................................................................... 24Cleaning and Maintenance ...................................................................... 25Troubleshooting ....................................................................................... 25Optional Positioning of Thermostat Sensing Bulb .................................. 29Technical Service .................................................................................... 31Specifications .......................................................................................... 31Service Hints ........................................................................................... 31Replacement Parts ................................................................................... 32Parts Central ............................................................................................ 32Accessories .............................................................................................. 33Illustrated Parts Lists ............................................................................... 34Warranty Information .............................................................................. Back Cover