www.desatech.com107886-01J 3SAFETY INFORMATIONIMPORTANT: Read this owner’smanual carefully and completelybefore trying to assemble,operate or service this heater.Improper use of this heater cancause serious injury or deathfrom burns, fire, explosion,electrical shock and carbonmonoxide poisoning.DANGER: Carbon monoxidepoisoning may lead to death!Carbon Monoxide Poisoning: Early signs of carbonmonoxide poisoning resemble the flu, with head-aches, dizziness or nausea. If you have these signs,the heater may not be working properly. Get freshair at once! Have heater serviced. Some peopleare more affected by carbon monoxide than others.These include pregnant women, people with heartor lung disease or anemia, those under the influenceof alcohol and those at high altitudes.Natural and Propane/LP Gas: Natural andpropane/LP gases are fuel gases. Fuel gases areodorless. An odor-making agent are added to fuelgases. The odor helps you detect a fuel gas leak.However, the odor added to fuel gas can fade. Fuelgas may be present even though no odor exists.Make certain you read and understand all warn-ings. Keep this manual for reference. It is yourguide to safe and proper operation of this heater.WARNING: Any change tothis heater or its controls canbe dangerous.WARNING: Do not use ablower insert, heat exchangerinsert or other accessory not ap-proved for use with this heater.Due to high temperatures, theappliance should be located outof traffic and away from furnitureand draperies.Do not place clothing or otherflammable material on or nearthe appliance. Never place anyobjects on the heater.Surface of heater becomes veryhot when running heater. Keepchildren and adults away fromhot surface to avoid burns orclothing ignition. Heater willremain hot for a time after shut-down. Allow surface to coolbefore touching.Carefully supervise young chil-dren when they are in the sameroom with heater.Make sure grill guard is in placebefore running heater.Keep the appliance area clearand free from combustible ma-terials, gasoline and other flam-mable vapors and liquids.1. This appliance is only for use with the type ofgas indicated on the rating plate. This applianceis not convertible for use with other gases.2. Do not place propane/LP supply tank(s) in-side any structure. Locate propane/LP supplytank(s) outdoors (propane/LP models only).3. If you smell gas• shut off gas supply• do not try to light any appliance• do not touch any electrical switch; do not useany phone in your building• immediately call your gas supplier from aneighborʼs phone. Follow the gas supplierʼsinstructions• if you cannot reach your gas supplier, callthe fire department4. This heater shall not be installed in a bedroomor bathroom.5. This heater needs fresh, outside air ventilationto run properly. This heater has an OxygenDepletion Sensing (ODS) safety shutoffsystem. The ODS shuts down the heater ifnot enough fresh air is available. See Air forCombustion and Ventilation, page 5.