Lennox L20 BF-2 - Manual

PLANNING YOUR INSTALLATION PAGE 5 QUESTIONS TO ASK THE LOCAL BUILDING OFFICIAL Correct installation is critical and imperative for reducing fire hazards and perilous conditions that can arise when gas appli-ances function improperly. The appliance must be installed per manufacturers’ instructions. G...

PLANNING YOUR INSTALLATION PAGE 6 MODELS L20 BF-2 AND L20 DVF-2 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 lo...

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. PAGE 7 VERTICAL TERMINATION WITH NO OFFSETS Min. Vertical Pipe Length: 5 feet Max. Vertica...

INSTALLATION DIRECT VENT SYSTEM COMPONENTS – MODEL L20 DVF-2 ONLY PAGE 8 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, Fire...

INSTALLATION - MODEL L20 DVF-2 ONLY PAGE 9 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 i...

INSTALLATION - MODEL L20 DVF-2 ONLY PAGE 10 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- cony. B = 12” Clearance to window or door that may be opened. C = 9” (USA) Clearance to...

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. PAGE 11 B-Vent Installation Illustration Approved for vertical terminati...

INSTALLATION PAGE 12 GAS SUPPLY HOOKUP (ALL MODELS) If using pipe other than black iron pipe see NFPA 54-National Fire Pro-tection Association / ANSI Z223.1-American National Standards Institute; and local code for specific requirements for the type of pipe used. Alter-native gas piping systems such...

INSTALLATION PAGE 13 DOOR OPERATION (ALL MODELS) The glass door is mounted on a hinge at the top of the firebox 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 ...

INSTALLATION PAGE 14 GAS APPLIANCE FINAL ASSEMBLY (ALL MODELS) After the appliance has been properly installed and all gas con-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, flam...

INSTALLATION PAGE 15 INSTALLATION CHECK LIST (ALL MODELS) Read and understand these instructions before using ap-pliance. Go through this installation checklist: Ensure that the log set is properly installed. Use cau-tion when handling the logs. See page 14. Reinstall the door frame assembly. See Do...

CARE AND OPERATION PAGE 16 (ALL MODELS) FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not follow these instructions ex-actly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance has a pilot which must be lit. When lighting the pilot, f...

CARE AND OPERATION PAGE 17 ALL MODELS “BREAK-IN” PERIOD The finish on this appliance is a high temperature paint that requires time and temperature to completely cure. The curing process will take 2 or 3 burns (heat up and cool down peri-ods). We recommend that you ventilate the house during the ini...

PROPANE CONVERSION PAGE 18 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 ...

PROPANE CONVERSION PAGE 19 7. High / Low Pressure Regulator Installation Procedure: a. Remove regulator cap and conversion screw (see follow- ing illustration). b. Install the new conversion screw (Red = Propane LP gas, Blue = Natural Gas). Ensure that the conversion screw is finger tight. Install t...

MAINTENANCE Always Turn Off Gas Control Valve Before Cleaning. Annual Maintenance Should Only Be Performed By A Qualified Service Technician: PAGE 20 (ALL MODELS) LOG SET Removing & Cleaning Logs - Carefully remove the logs (remov-ing top logs, then lifting front log out, then rear log). Use car...

MAINTENANCE Always Turn Off Gas Control Valve Before Cleaning. Annual Maintenance Should Only Be Performed By A Qualified Service Technician: PAGE 21 (ALL MODELS) PERIODIC CHECK OF PILOT AND BURNER FLAMES Check the operation of the pilot and cycle the burner. Visually check the flame of the burner m...

WIRING DIAGRAMS PAGE 22 GAS CONTROL AND SAFETY SYSTEM WIRING DIAGRAM CAUTION: Label all wiring prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous opera-tion. Verify proper operation after servicing. The gas control wiring diagram shown here should be used ...

TROUBLESHOOTING Qualified Technicians Only (ALL MODELS) PAGE 23 PROBLEM CAUSE(S) SOLUTIONS 1) Pilot will not light, and Piezo Igniter does not produce a heavy blue spark. a. Electrode wire (at Piezo Igniter) not pushed completely on. b. Piezo igniter is defective • Make sure connections are solid. •...

TROUBLESHOOTING Qualified Technicians Only PAGE 24 (MODEL L20 BF-2 ONLY) SPILL SWITCH This appliance is equipped with a “Spill Switch” which is a safety device that will shut off gas to the burner in case of sus-tained back draft or flue gas spillage from the draft hood. The purpose of this safety d...

SPECIFICATIONS: Model L20 BF-2 PAGE 27 Flue Size 4” - Top Vent Height Overall 29” Height to Flue Outlet 28 ¾” Width 23” Depth 15” Fuel Natural Gas (standard) (or) LP Gas (convertible). Gas inlet 3/8” NPT-Male / Flex Line (or) remove flex, 3/8” NPT–Female Flare. Performance Variable Flame Control. Fe...

PAGE 31 OWNERSHIP RECORDS Dealer’s Name: Dealer’s Address: City: State: Zip Code: Serial Number: Date of Purchase: Date Installed: Notes: SERVICE AND MAINTENANCE LOG Service Service Service Date Technician Description