– WHAT TO DO IF YOU SMELL GAS • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building. • Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions. • If you cannot reach your gas supplier, call the fire department. – Installation and service must be performed by a qualified installer, service agency or the gas supplier. MODEL: 33ISDG Natural Gas or Propane/LPG Control Type: Milli-Volt and T-Stat VENT-FREE FIREPLACE SYSTEMS INSTALLATION AND OPERATING INSTRUCTIONS WARNINGS This appliance may be installed in an aftermarket, permanently located, manufactured (mobile) home, where not prohibited by local codes. This applicance is for use only with the type of gas indicated on the rating plate. This applicance is not convertible for use with other gases. WARNINGSIf the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life. – Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. – WHAT TO DO IF YOU SMELL GAS • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building. • Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions. • If you cannot reach your gas supplier, call the fire department. – Installation and service must be performed by a qualified installer, service agency or the gas supplier. MODEL: 33ISDG Natural Gas or Propane/LPG Control Type: Milli-Volt and T-Stat VENT-FREE FIREPLACE SYSTEMS INSTALLATION AND OPERATING INSTRUCTIONS WARNINGS This appliance may be installed in an aftermarket, permanently located, manufactured (mobile) home, where not prohibited by local codes. This applicance is for use only with the type of gas indicated on the rating plate. This applicance is not convertible for use with other gases. This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is installed. Provisions for adequate combustion and ventilation air must be provided. See page 9. READ AND SAVE THESE INSTRUCTIONS CONTENTS Important Safety Information ..................................3 Product Features ......................................................5 Operation ..............................................................5 Natural Gas ..........................................................6 Propane/LPG ........................................................6 Specifi cations ...........................................................6 Ignition Controls ....................................................6 Pilot .......................................................................6 Thermal Generator ...................................................6 Getting Started ..........................................................7 General Installation Information .............................8 Removing Screen .................................................8 Installing Canopy ..................................................8 Codes ...................................................................9 Adequate combustion and Ventilation Air .............9 Clearances and Height Requirements ..................11 Fireplace Framing...................................................14 Securing Heater to Floor ........................................15 Connecting the Gas ................................................16 Checking Gas Pressure .........................................18 Electrical Wiring (Milli-Volt) ...................................19 Electrical Wiring (Fan) ............................................21 Log Placement ........................................................22 Flame Appearance ..................................................26 Checking the Burner Flame ...................................27 Operating Instructions ...........................................28 What to Do if You Smell Gas ..............................28 Milli-Volt Control Lighting Instructions .................29 Match Lighting Instructions .................................30 Cleaning and Servicing ..........................................31 Troubleshooting .....................................................32 Illustrated Parts Breakdown ..................................34 Fireplace Assembly ...........................................34 Grate and Base Assembly .................................36 Logs....................................................................38 Warranty ..................................................Back Cover 23D8036 IMPORTANT SAFETY INFORMATION INSTALLER OWNER Please leave these instructions with the appliance. Please retain these instructions for future reference. IMPORTANT Read these instructions carefully before installing or trying to operate this vent-free gas heater. WARNING • Any change to this heater or its controls...