www.desatech.com 116658-01A2WARNING: 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. Provi-sions for adequate combustion and ventilation air mustbe provided. Refer to Air for Combustion and Ventilationsection on page 6 of this manual.This appliance may be installed in an aftermarket,* per-manently located, manufactured (mobile) home, wherenot prohibited by local codes.This appliance is only for use with the type of gas indi-cated on the rating plate. This appliance is not convert-ible for use with other gases.* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturerTABLE OF CONTENTSSafety Information ............................................... 3Product Identification ........................................... 4Optional Remote Control Accessories ................. 4Local Codes ........................................................ 5Product Features ................................................. 5Unpacking ........................................................... 5Hood Assembly ................................................... 5Air for Combustion and Ventilation ...................... 6Installation ........................................................... 8operating Fireplace ............................................ 22Inspecting Burners ............................................ 25Cleaning and Maintenance ................................ 26Wiring Diagram .................................................. 27Troubleshooting ................................................. 28Specifications .................................................... 32Replacement Parts ............................................ 33Service Hints ..................................................... 33Technical Service .............................................. 33Illustrated Parts Breakdown and Parts List ....... 34Accessories ....................................................... 38State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in theCommonwealth of Massachusetts.Sellers of unvented propane or natural gas-fired supplemental room heaters shall provide to eachpurchaser a copy of 527 CMR 30 upon sale of the unit.Vent-free gas products are prohibited for bedroom and bathroom installation in the Common-wealth of Massachusetts.