Instruction/ maintenance manual of the product L20 BF-2 Lennox Hearth
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INSTALLATION AND OPERATION FREESTANDING VENTED GAS FIRED ROOM HEATERS RETAIN THIS MANUAL FOR FUTURE REFERENC E P/N 775 , 021M Rev . C , 8/04 Models: L20 BF-2 (B-Vent) an d L20 DVF-2 (Direct-Ve nt) Mod.
IMPORTANT WARNINGS / CAUTIONS CAUTION: READ THIS MANUAL TH OROUGHLY BEFORE STARTING I NST ALLATION. FOR YOUR SAFETY, FOLLOW THE INSTALLATION, OPER ATION AND MAINTENANCE INST R UCTIONS EXACTLY WI THOUT DE- VIATION. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN A POSSIB LE FIRE HAZARD AND MAY VOID THE WARRANTY.
TABLE OF CONTENTS PAGE 3 Important Warn ings ........................................................ 2 Testing / Listing, Us ing this Manual ................................. 3 Planning Your In stallation .............................................
PLANNING YOUR INSTALLATION PAGE 4 LOCAL AND N ATIONAL CODE REQUIREMEN TS The installation of these appliances must conform with local codes or, in the abse nce of local codes, with the National Fuel Gas Code, (for USA) NFPA 54 / ANSI Z223.1 - latest edition.
PLANNING YOUR INSTALLATION PAGE 5 QUESTIONS TO ASK THE LO CAL BUILDING OFFICIAL Correct installation is critical and imp erative for reducing f ire hazards and pe rilous conditions that ca n arise when gas appli- ances function improperly. The a ppliance must be installed per manufacturers’ instructions.
PLANNING YOUR INSTALLATION PAGE 6 MODELS L20 BF-2 AND L20 DVF-2 CLEARANCES TO COMBUS TIBLE MATERIALS These appliances can be installed in most residential room configura- tions, parallel to a rear or adjacent wa ll, or in an alcove that allows for the minimum clearances to co mbusti ble surfaces.
INSTALLATION - MODEL L20 DVF-2 (DI RECT-VE NT) VEN TING REQUIREMENTS. This applia nce is d esigned to b e vented wi th a 4” x 6 5/8” direct -vent pi pe. Each dir ect-vent ap pliance m ust use its ow n separa te vent system. PAGE 7 VERTICAL TERMINAT ION WITH NO OFFSETS Min.
INSTALLATION DIRECT VENT SYSTEM COMPONE NTS – MODEL L2 0 DVF-2 ONLY PAGE 8 The following Direct-Ven t system component s may be safely used model L20 DVF-2. Model # Brand: SECURITY / Description Model # Brand: SIMPSON DURA-VENT / Descripti on SV 0 SHK Standard Horizontal Term.
INSTALLATION - MODEL L20 DVF-2 ONLY PAGE 9 Direct Vent R etrofit Of Exist ing Chimney Syst em - An existing Class-A (wood-burning) Me tal Chimney or Mas onry Chimney can be converted to a direct vent system. Use one of the following chim ney conve rsion kits listed below.
INSTALLATION - MODEL L20 DVF-2 ONLY PAGE 10 HORIZONTAL VENT TERMINATION REQUIREM ENTS The venti ng termi nals shoul d not be rec e ssed int o a wall or siding. A = 2” Clearances above grade, veranda, porch, de ck or bal- cony. B = 12” Clearance to window or door that may be opened.
INSTALLATION MODEL L20 BF-2 ONLY This appliance is designed to be v ented w ith a 4” B-Vent pipe. Each B- Vent appliance must use its own separate vent system. For pipe cleara nces, also s ee pipe ma nufacturers v enting inst ructions. PAGE 11 B-Vent Installation Illustration Approved for verti cal termi nation only .
INSTALLATION PAGE 12 GAS SUPPLY HOOKUP (ALL MODELS) If usin g pipe o ther th an black iron pipe see NFPA 54-National F ire Pro- tection Association / A N SI Z223.1-Ame rican National Standards Institute; and local cod e for specific requiremen ts for the type of pipe used.
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 posi tion by the draw latch mounted on the bottom of the firebox. The latch tension is preset at the factory. Over time, adjustment of t he latch tension may be nec- essary to maintain a tight door seal .
INSTALLATION PAGE 14 GAS APPLIANCE FINAL ASSEMB LY (ALL MODELS) After the appliance h as been properly installed and all gas c on- nections have been made and t ested, you c an now install the log set.
INSTALLATION PAGE 15 INSTALLATI ON CHECK LI ST (ALL MODE LS) Read and understand these inst ructions before usi ng ap- pliance. Go through this installation c hecklist: Ensure that the log set is properly installed. Use cau- tion when handling the logs.
CARE AND OPERATION PAGE 16 (ALL MODELS) FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you d o not follow t hese instructi ons ex- actly, a fi re or explosi on may resul t causing p roperty damage, personal injury or loss of life. A . This appliance has a pilot which must be lit.
CARE AND OPERATION PAGE 17 ALL MODELS “BREAK-IN” PERIOD The finish on this appliance is a hi gh 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 duri ng the initial burns.
PROPANE CONVERSION PAGE 18 PROPANE CONVERSION PROCEDU RE (ALL MODELS) (Only require d if Propane gas is used) This appliance is desig ned to operate on natural gas, or pr opane (LP). It is factory set for use with natural gas and re quires field conversion f or use with propa ne.
PROPANE CONVERSION PAGE 19 7. High / Low Pressure Regula tor Installation Procedure: a. Remove regulator cap and conversion screw (see follow- ing illustration). b. Install the new conversion scr ew (Red = Propane LP gas, Blue = Natural Gas). Ensure that the conversion screw is finger tight.
MAINTENANCE Always Turn Off Gas Control Valve Before Cleaning. Annual Maintenance Should Only Be Performed By A Qualified Service Technician: PAGE 20 (ALL MODE LS) LOG SET Removing & Cleaning Logs - Carefully remove the logs (re mov- ing top logs, then liftin g front log out, the n rear log).
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 PILO T AND BURNER FLAM ES Check the operation of the pilot and cycle the burner.
WIRING DIAGRAMS PAGE 22 GAS CONTROL AND SAFETY SYSTEM WIRI NG DIAGRAM CAUTION: Lab el all wiring prior t o disconnection w hen servicing controls. Wiring errors can ca use improper an d dangerous oper a- tion.
TROUBLESHOOTING Qualified Technicians Only (ALL MODELS) PAGE 23 PROBLEM CAUSE(S) SOLUTIONS 1) Pilot will not light, a nd Piezo Igniter does not produce a h eavy blue sp ark. a. Electrode wire (at Piezo Igniter) not pushed comple tely o n. b. Piezo igniter is defecti ve • Make sure connections are solid.
TROUBLESHOOTING Qualified Technicians Only PAGE 24 (MODEL L20 BF- 2 ONLY) SPILL SWITCH This appliance is equip ped with a “Spill Switch” which is a safety device that will shut of f gas to the burner in case of sus- tained back draft or flue gas sp illage from the draft hood.
REPLACEMENT PARTS – Models: L20BF-2 & L20 DVF-2 For the loc ation of t he neares t Dealer for r eplacem ent parts, c on tact: Lennox Hearth Pro ducts; 1110 West T aft Avenue; Orange, C A 92865 P.
OPTIONAL ACCESSORIES – Models: L20BF-2 & L20 DVF-2 PAGE 26 Item # Catalog # Model Description 1 14M07 DK2-G Door Kit , L20, Gold 2 14M05 BRK-L20 Brickaded Inter ior Kit, L20 3 H0251 RC-STAT Delu.
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.
SPECIFICATIONS: Model L20 DVF-2 PAGE 28 Flue Size 4” – Top Vent Intake Pipe 6.62 5” (6 5/8”) Height Overall 30 1/2” Height 29” 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.
SAFETY/ LISTING LABEL (RATING PLATE) PAGE 29.
SAFETY/ LISTING LABEL (RATING PLATE) PAGE 30.
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 T.
Printed in U.S.A LENNOX HEARTH PRODUCTS 2001 P/N 775,021M REV. C 08/2004 1110 West Taft Avenue • Or ange, CA 92865 LENNOX reserves the right to make changes at any time, without notice, in design, materials, specifications, prices and also for di scontinued colors, styles and products.
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If you have not bought Lennox Hearth L20 BF-2 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Lennox Hearth L20 BF-2 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lennox Hearth L20 BF-2 you will learn all the available features of the product, as well as information on its operation. The information that you get Lennox Hearth L20 BF-2 will certainly help you make a decision on the purchase.
If you already are a holder of Lennox Hearth L20 BF-2, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Lennox Hearth L20 BF-2.
However, one of the most important roles played by the user manual is to help in solving problems with Lennox Hearth L20 BF-2. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lennox Hearth L20 BF-2 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
