2099569CONTENTS SECTION PAGESAFETYINFORMATION WARNING ICON G 001WARNINGSIMPORTANT: 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.WARNING ICON G 001DANGERCarbon monoxide poisoning may lead to death!Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoningresemble the flu, with headaches, dizziness, or nausea. If you have these signs, theheater may not be working properly. Get fresh air at once! Have heater serviced.Some people are more affected by carbon monoxide than others. These includepregnant women, people with heart or lung disease or anemia, those under theinfluence of alcohol, and those at high altitudes.Natural Gas: Natural gas is odorless. An odor-making agent is added to naturalgas. The odor helps you detect a natural gas leak. However, the odor added tonatural gas can fade. Natural gas may be present even though no odor exists.Make certain you read and understand all Warnings. Keep this manual for refer-ence. It is your guide to safe and proper operation of this heater.Safety Information ......................................................................... 2Product Identification .................................................................... 4Local Codes ................................................................................... 4Unpacking ...................................................................................... 4Product Features ............................................................................ 4Fresh Air For Combustion And Ventilation .................................. 5Installing To Wall .......................................................................... 9Connecting To Gas Supply ............................................................ 14Checking Gas Connections ............................................................ 15Operating Heater (Thermostat Models) ......................................... 17Operating Heater (Non-Thermostat Model) .................................. 20Inspecting Burner .......................................................................... 22Cleaning And Maintenance ........................................................... 24Troubleshooting ............................................................................. 24Technical Service .......................................................................... 28Specifications ................................................................................ 28Service Hints ................................................................................. 28Service Publications ...................................................................... 28Replacement Parts ......................................................................... 29Parts Centrals ................................................................................. 29Accessories .................................................................................... 30Illustrated Parts List ....................................................................... 31-32Warranty Information .................................................................... Back CoverSafety Information continues on next page