www.desatech.com 107884-01H2WARNING: Improper installation, adjustment, altera-tion, service, or maintenance can cause injury or prop-erty damage. Refer to this manual for correct installationand operational procedures. For assistance or addi-tional information consult a qualified installer, serviceagency, or the gas supplier.WARNING: This is an unvented gas-fired heater. It usesair (oxygen) from the room in which it is installed.Provisions for adequate combustion and ventilation airmust be provided. Refer to Air for Combustion andVentilation section on page 5 of this manual.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 the type of gasindicated on the rating plate. This appliance is notconvertible for use with other gases.* Aftermarket: Completion of sale, not for purpose of resale, from themanufacturerTABLE OF CONTENTSSafety Information ............................................... 3Local Codes ........................................................ 4Product Identification .......................................... 4Unpacking ........................................................... 4Product Features ................................................ 4Air For Combustion And Ventilation .................... 5Installation ........................................................... 7Operating Heater .............................................. 15Inpecting Heater ................................................ 18Cleaning and Maintenance ............................... 19Troubleshooting ................................................ 20Specifications .................................................... 24Service Hints ..................................................... 25Technical Service .............................................. 25Service Publications .......................................... 25Replacement Parts ........................................... 25Illustrated Parts Breakdown and Parts List ....... 26Accessories ....................................................... 30Parts Centrals ................................................... 31Warranty Information .......................... Back Cover