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INSTALLATION AND OPERATION
MANUAL
FREESTANDING VENTED GAS FIRED ROOM HEATERS
L20 DVF-2 shown with optional gold door and brickaded interior
Models: L20 BF-2 (B-Vent) and L20 DVF-2 (Direct-Vent)
RETAIN THIS MANUAL FOR FUTURE REFERENCE
P/N 775,021M Rev. C, 8/04
Model L20 DVF-2 may be installed in an aftermarket permanently locat
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IMPORTANT WARNINGS / CAUTIONS CAUTION: READ THIS MANUAL THOROUGHLY BEFORE STARTING INSTALLATION. FOR YOUR SAFETY, FOLLOW THE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS EXACTLY WITHOUT DE- VIATION. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN A POSSIBLE FIRE HAZARD AND MAY VOID THE WARRANTY. IF THIS APPLIANCE IS NOT PROPERLY INSTALLED, A HOUSE FIRE MAY RE- SULT. CONTACT LOCAL BUILDING OR FIRE OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION IN- SPECTION IN YOUR AREA. 1. WARNIN
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TABLE OF CONTENTS Important Warnings ........................................................ 2 CONGRATULATIONS ON THE PURCHASE OF YOUR NEW GAS Testing / Listing, Using this Manual ................................. 3 APPLIANCE MANUFACTURED BY LENNOX HEARTH PROD- UCTS. Planning Your Installation ..............................................4-6 When you purchased your new gas fired heater, you joined Manufactured (Mobil) Home Requirements....................... 6 the ranks of
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PLANNING YOUR INSTALLATION LOCAL AND NATIONAL CODE REQUIREMENTS GAS PRESSURE (WC = Water Column) The installation of these appliances must conform with local Minimum inlet gas supply pressure for the purpose of input codes or, in the absence of local codes, with the National Fuel adjustment: Gas Code, (for USA) NFPA 54 / ANSI Z223.1 - latest edition. Natural Gas - 4.5” WC min. – 7.0” WC max. Air Circulation Blower: The blower electrical power cord must Propane (LP) - 11” WC min - 13.0
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PLANNING YOUR INSTALLATION QUESTIONS TO ASK THE LOCAL BUILDING OFFICIAL 5. In some states or municipalities, a licensed gas fitter or plumber may be required to install this appliance. Check Correct installation is critical and imperative for reducing fire with your local building official for requirements in your hazards and perilous conditions that can arise when gas appli- area (i.e. Is a license required for installation of gas supply ances function improperly. The appliance must b
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PLANNING YOUR INSTALLATION MODELS L20 BF-2 AND L20 DVF-2 Rear Wall or Alcove CLEARANCES TO COMBUSTIBLE MATERIALS These appliances can be installed in most residential room configura- tions, parallel to a rear or adjacent wall, or in an alcove that allows for the minimum clearances to combustible surfaces. Your local building inspector should review your plans prior to installation. When installing this appliance, provide adequate clearances around 65 Inch air openings and adeq
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INSTALLATION - MODEL L20 DVF-2 (DIRECT-VENT) VENTING REQUIREMENTS. This appliance is designed to be vented with a 4” x 6 5/8” direct-vent pipe. Each direct-vent appliance must use its own separate vent system. VERTICAL TERMINATION WITH VERTICAL TERMINATION HORIZONTAL TERMINATION NO OFFSETS WITH 2 OFFSETS WITH 1 OFFSET Min. Vertical Pipe Length: 5 feet Min. Vertical Pipe From Appliance to first offset: Min. Vertical Pipe From Appliance to offset: 2 2 feet. feet. Max. Vertical Pipe Le
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INSTALLATION DIRECT VENT SYSTEM COMPONENTS – MODEL L20 DVF-2 ONLY The following Direct-Vent system components may be safely used model L20 DVF-2. Model # Brand: SECURITY / Description Model # Brand: SIMPSON DURA-VENT / Description SV 0 SHK Standard Horizontal Term. Kit (90° Black Elbow, Firestop (2), Horizon- 970 Basic Horizontal Term. Kit (90° Black Elbow, Wall Thimble Cover, tal Square Term. Cap) Horizontal Square Term. Cap) SV 0 HK Horizontal Term. Kit (90° Black Elbow, Firesto
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INSTALLATION - MODEL L20 DVF-2 ONLY Direct Vent Retrofit Of Existing Chimney System - An existing Class-A (wood-burning) Metal Chimney or Masonry Chimney can be converted to a direct vent system. Use one of the following chimney conversion kits listed below. Have the existing chimney system inspected by a professional prior to the conversion. If using Simpson Dura-Vent brand liner kit, see “IMPORTANT” note at the top of page 8. The chimney conversion should not be applied to the portion
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INSTALLATION - MODEL L20 DVF-2 ONLY HORIZONTAL VENT TERMINATION REQUIREMENTS The venting terminals should not be recessed into a wall or siding. A = 2” Clearances above grade, veranda, porch, deck or bal- J = 9” (USA) Clearance to non-mechanical air supply inlet to cony. building or the combustion air inlet to 12“ (CAN) any B = 12” Clearance to window or door that may be opened. other appliance. C = 9” (USA) Clearance to permanently closed window. K = 3 ft. (USA) Clearance
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INSTALLATION MODEL L20 BF-2 ONLY This appliance is designed to be vented with a 4” B-Vent pipe. Each B-Vent appliance must use its own separate vent system. For pipe clearances, also see pipe manufacturers venting instructions. B-Vent Installation Illustration Vent Configuration Requirements Approved for vertical termination only. A minimum of 5 feet vertical pipe is required to vent the ap- pliance. Lengthy horizontal pipe runs require sufficient length of vertical pipe to deliv
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INSTALLATION • The appliance must be isolated from the gas supply piping system by GAS SUPPLY HOOKUP (ALL MODELS) closing its individual manual shut-off valve during any pressure test- If using pipe other than black iron pipe see NFPA 54-National Fire Pro- tection Association / ANSI Z223.1-American National Standards Institute; ing of the gas supply piping system at test pressures equal to or less and local code for specific requirements for the type of pipe used. Alter- than *1/2 psi (3.
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INSTALLATION DOOR OPERATION (ALL MODELS) 2. Swing bottom of door outward until door releases at top, The glass door is mounted on a hinge at the top of the firebox then lift door up and off. and is secured in the closed position by the draw latch mounted on the bottom of the firebox. The latch tension is preset at the factory. Over time, adjustment of the latch tension may be nec- essary to maintain a tight door seal. This adjustment can be made by spinning the latching rod in the
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INSTALLATION GAS APPLIANCE FINAL ASSEMBLY (ALL MODELS) 4. Install the center top twig as shown in the following illus- After the appliance has been properly installed and all gas con- tration. nections have been made and tested, you can now install the log set. INSTALLING LOG SET: WARNING: If logs are not installed according to the direc- tions in this manual, flame impingement and improper com- bustion could occur and result in excessive production of carbon monoxide (CO), a colorl
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INSTALLATION INSTALLATION CHECK LIST (ALL MODELS) 2. Adjust gap as shown in following picture. Read and understand these instructions before using ap- pliance. Go through this installation checklist: Loosen setscrew using Phillips Ensure that the log set is properly installed. Use cau- screwdriver Air Shutter tion when handling the logs. See page 14. Reinstall the door frame assembly. See Door Assem- bly on this page. WARNING: DO NOT OPERATE APPLIANCE WITH THE GLASS FRONT REMOVED,
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CARE AND OPERATION (ALL MODELS) LIGHTING AND SHUTDOWN INSTRUCTIONS FOR YOUR SAFETY READ BEFORE LIGHTING 1. STOP! Read the safety information on this page or on label (on ap- WARNING: If you do not follow these instructions ex- pliance). actly, a fire or explosion may result causing property 2. Turn off all electrical power to the appliance (unplug blower power damage, personal injury or loss of life. cord). Make sure the burner ON/OFF switch is in the OFF position. A. This appliance has
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CARE AND OPERATION CIRCULATION BLOWER OPERATION ALL MODELS The speed of the circulation blower is controlled using the “BREAK-IN” PERIOD speed control rheostat (see following illustration) on the left hand side of the control panel. The blower system is designed The finish on this appliance is a high temperature paint that with a variable speed control allowing an infinite range of requires time and temperature to completely cure. The curing blower settings to meet the custome
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PROPANE CONVERSION PROPANE CONVERSION PROCEDURE (ALL MODELS) (Only required if Propane gas is used) This appliance is designed to operate on natural gas, or propane (LP). It is factory set for use with natural gas and requires field conversion for use with propane. The use of other fuels or com- bination of fuels will degrade the performance of this system and may be dangerous. When converting to Propane Gas (LP), it may be necessary to install (as a minimum) 3 feet of vertical pipe
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PROPANE CONVERSION 7. High / Low Pressure Regulator Installation Procedure: 10. Purge air from the gas line (see #9 above), then connect propane gas line to the appliance. Connect the fuel line to a. Remove regulator cap and conversion screw (see follow- the insert inlet (1/2” NPT fitting) using the fitting required. ing illustration). 11. Perform leak Test. b. Install the new conversion screw (Red = Propane LP gas, Blue = Natural Gas). Ensure that the conversion screw is CAUTION : Af
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MAINTENANCE Always Turn Off Gas Control Valve Before Cleaning. Annual Maintenance Should Only Be Performed By A Qualified Service Technician: (ALL MODELS) (Model L20 DVF-2) If the vent-air intake system is disassembled for any reason, the service technician should follow vent manu- LOG SET factures instructions for proper reassembly and sealing of the Removing & Cleaning Logs - Carefully remove the logs (remov- vent-air intake system. ing top logs, then lifting front log out, then rea
