Gas Heater User Manual

ManualsBrandsLennox Hearth ManualsGas HeaterL20 BF-2

INSTALLATION AND OPERATION

FREESTANDING VENTED GAS FIRED ROOM HEATERS

RETAIN THIS MANUAL FOR FUTURE REFERENCE

P/N 775

021M Rev. C

8/04

Models: L20 BF-2 (B-Vent) and L20 DVF-2 (Direct-Vent)

Model L20 DV

-2 may be installed in an aftermarket permanently located,

manufactured

(

mobile

)

home, where not proh

ited b

local code

Report #189122-1027389

WARNING: IF THE INFORMATION IN THIS MAN-

UAL IS NOT FOLLOWED EXACTLY, A FIRE OR

EXPLOSION MAY RESULT CAUSING PROPERTY

DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.

FOR YOUR SAFETY: Do not store or use gasoline

or other flammable vapors or liquids in the vicin-

ity of this or any other appliance.

FOR YOUR SAFETY: What to do if you smell gas:

• DO NOT light any appliance.

• DO NOT touch any electrical switches.

• Do not use any phone in your building.

• Immediately call your gas supplier from

a neighbor’s phone. Follow your gas

suppliers instructions.

• If your gas supplier cannot be reached, call

the fire department.

Installation and service must be performed by a quali-

fied installer, service agency or the gas supplier.

AVERTISSEMENT: ASSUREZ-VOUS DE BIEN SUIVRE LES

INSTRUCTIONS DONNÉ DANS CETTE NOTICE POUR

RÉDUIRE AU MINIMUM LE RISQUE D’INCENDIE OU

POUR ÉVITER TOUT DOMMAGE MATÉRIEL, TOUTE

BLESSURE OU LA MORT.

POUR

VOTRE

SÉCURITÉ

e pas entreposer n

ser

d’essence ni d’autre vapeurs ou liquides inflammables dans

le voisinage de cet appareil ou de tout autre appareil.

POUR VOTRE SÉCURITÉ: Que faire si vous sentez une

odeur de gaz:

• Ne pas tenter d’allumer d’appareil.

• Ne touchez à aucun interrupteur. Ne pas vous

servir des téléphones se trouvant dans le batiment

où vous vous trouvez.

• Evacuez la piéce, le bâtiment ou la zone.

• Appelez immédiatement votre fournisseur de gaz

depuis un voisin. Suivez les instructions du

fournisseur.

• Si vous ne pouvez rejoindre le fournisseur de gaz, appe-

lez le service dos incendies.

L’installation et service doit être exécuté par un qualifié

installeur, agence de service ou le fournisseur de gaz.

L20 DVF-2 shown with optional gold door and brickaded interior

MANUAL

Summary of content (32 pages)

PAGE 1
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.
PAGE 2
IMPORTANT WARNINGS / CAUTIONS CAUTION: READ THIS MANUAL THOROUGHLY BEFORE STARTING INSTALLATION. FOR YOUR SAFETY, FOLLOW THE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS EXACTLY WITHOUT DEVIATION. 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 RESULT. CONTACT LOCAL BUILDING OR FIRE OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION INSPECTION IN YOUR AREA. 1.
PAGE 3
TABLE OF CONTENTS Important Warnings ........................................................ 2 CONGRATULATIONS ON THE PURCHASE OF YOUR NEW GAS APPLIANCE MANUFACTURED BY LENNOX HEARTH PRODUCTS. Testing / Listing, Using this Manual ................................. 3 Planning Your Installation ..............................................
PAGE 4
PLANNING YOUR INSTALLATION GAS PRESSURE (WC = Water Column) Minimum inlet gas supply pressure for the purpose of input adjustment: LOCAL AND NATIONAL CODE REQUIREMENTS The installation of these appliances must conform with local codes or, in the absence of local codes, with the National Fuel Gas Code, (for USA) NFPA 54 / ANSI Z223.1 - latest edition. Natural Gas - 4.5” WC min. – 7.0” WC max. Propane (LP) - 11” WC min - 13.0” WC max.
PAGE 5
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 with your local building official for requirements in your area (i.e. Is a license required for installation of gas supply line)? Correct installation is critical and imperative for reducing fire hazards and perilous conditions that can arise when gas appliances function improperly.
PAGE 6
PLANNING YOUR INSTALLATION Rear Wall or Alcove MODELS L20 BF-2 AND L20 DVF-2 CLEARANCES TO COMBUSTIBLE MATERIALS These appliances can be installed in most residential room configurations, 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.
PAGE 7
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 NO OFFSETS Min. Vertical Pipe Length: 5 feet Max. Vertical Pipe Length: 25 feet VERTICAL TERMINATION WITH 2 OFFSETS Min. Vertical Pipe From Appliance to first offset: 2 feet. HORIZONTAL TERMINATION WITH 1 OFFSET Min. Vertical Pipe From Appliance to offset: 2 feet. Min.
PAGE 8
INSTALLATION DIRECT VENT SYSTEM COMPONENTS – MODEL L20 DVF-2 ONLY The following Direct-Vent system components may be safely used model L20 DVF-2.
PAGE 9
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.
PAGE 10
INSTALLATION - MODEL L20 DVF-2 ONLY HORIZONTAL VENT TERMINATION REQUIREMENTS The venting terminals should not be recessed into a wall or siding. J= 9” (USA) Clearance to non-mechanical air supply inlet to building or the combustion air inlet to 12“ (CAN) any other appliance. K = 3 ft. (USA) Clearance to a mechanical air supply inlet. 6 ft. (CAN) L* = 7 ft. (USA) Clearance above paved side-walk or a paved driveway located on public property.
PAGE 11
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. Vent Configuration Requirements B-Vent Installation Illustration Approved for vertical termination only. A minimum of 5 feet vertical pipe is required to vent the appliance. Lengthy horizontal pipe runs require sufficient length of vertical pipe to deliver adequate draft.
PAGE 12
INSTALLATION • GAS SUPPLY HOOKUP (ALL MODELS) If using pipe other than black iron pipe see NFPA 54-National Fire Protection Association / ANSI Z223.1-American National Standards Institute; and local code for specific requirements for the type of pipe used. Alternative gas piping systems such as CSST may be used subject to local code and proper sizing. This appliance is equipped with a flexible gas line and fitting for a gas supply line connection.
PAGE 13
INSTALLATION 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 necessary to maintain a tight door seal. This adjustment can be made by spinning the latching rod in the rod guide. Care should be exercised to not adjust the tension too high. 2.
PAGE 14
INSTALLATION 4. GAS APPLIANCE FINAL ASSEMBLY (ALL MODELS) After the appliance has been properly installed and all gas connections have been made and tested, you can now install the log set. Install the center top twig as shown in the following illustration. INSTALLING LOG SET: WARNING: If logs are not installed according to the directions in this manual, flame impingement and improper combustion could occur and result in excessive production of carbon monoxide (CO), a colorless, odorless, toxic gas.
PAGE 15
INSTALLATION INSTALLATION CHECK LIST (ALL MODELS) Read and understand these instructions before using appliance. Go through this installation checklist: 2. Adjust gap as shown in following picture. Ensure that the log set is properly installed. Use caution when handling the logs. See page 14. Air Shutter Loosen setscrew using Phillips screwdriver Reinstall the door frame assembly. See Door Assembly on this page. WARNING: DO NOT OPERATE APPLIANCE WITH THE GLASS FRONT REMOVED, CRACKED OR BROKEN.
PAGE 16
CARE AND OPERATION (ALL MODELS) FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not follow these instructions exactly, 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, follow these instructions exactly. B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.
PAGE 17
CARE AND OPERATION ALL MODELS CIRCULATION BLOWER OPERATION “BREAK-IN” PERIOD The speed of the circulation blower is controlled using the speed control rheostat (see following illustration) on the left hand side of the control panel. The blower system is designed with a variable speed control allowing an infinite range of blower settings to meet the customer’s needs. With the rotary switch turned fully CCW 4, the blower is off. Turning the switch CW 3 will activate the blower at its maximum speed.
PAGE 18
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 combination of fuels will degrade the performance of this system and may be dangerous.
PAGE 19
PROPANE CONVERSION 10. Purge air from the gas line (see #9 above), then connect propane gas line to the appliance. Connect the fuel line to the insert inlet (1/2” NPT fitting) using the fitting required. 7. High / Low Pressure Regulator Installation Procedure: a. Remove regulator cap and conversion screw (see following illustration). 11. Perform leak Test. b. Install the new conversion screw (Red = Propane LP gas, Blue = Natural Gas). Ensure that the conversion screw is finger tight.
PAGE 20
MAINTENANCE Always Turn Off Gas Control Valve Before Cleaning. Annual Maintenance Should Only Be Performed By A Qualified Service Technician: (ALL MODELS) LOG SET Removing & Cleaning Logs - Carefully remove the logs (removing top logs, then lifting front log out, then rear log). Use care when handling the fiber logs, as they become quite fragile after curing. Use a small soft-bristled brush (e.g., a nylon paint brush) to remove soot, dust or debris that may have accumulated on the burner or log set.
PAGE 21
MAINTENANCE Always Turn Off Gas Control Valve Before Cleaning. Annual Maintenance Should Only Be Performed By A Qualified Service Technician: (ALL MODELS) BURNER FLAME APPEARANCE A periodic visual check of the pilot and burner flames should be performed. If either the pilot or burner flame do not show proper appearance or behavior, as outlined here, consult a qualified gas appliance technician. PERIODIC CHECK OF PILOT AND BURNER FLAMES Check the operation of the pilot and cycle the burner.
PAGE 22
WIRING DIAGRAMS GAS CONTROL AND SAFETY SYSTEM WIRING DIAGRAM CAUTION: Label all wiring prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. The gas control wiring diagram shown here should be used by service technicians for guidance when troubleshooting problems with the pilot safety (millivolt) system or burner remote control system or when locating system components for repair / replacement.
PAGE 23
TROUBLESHOOTING Qualified Technicians Only (ALL MODELS) PROBLEM 1) Pilot will not light, and Piezo Igniter does not produce a heavy blue spark. 2) Pilot will not light, but Piezo Igniter produces a heavy blue spark. 3) Pilot will not stay lit. 4) Pilot flame stays lit, but main burner will not light. CAUSE(S) a. Electrode wire (at Piezo Igniter) not pushed completely on. b. Piezo igniter is defective a. Incorrect lighting procedure. b. No gas to appliance due to shut valves or disconnected gas lines. a.
PAGE 24
TROUBLESHOOTING Qualified Technicians Only (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 sustained back draft or flue gas spillage from the draft hood. The purpose of this safety device is to prevent potentially harmful gases from entering your home in the event of a blockage in the vent system.
PAGE 25
REPLACEMENT PARTS – Models: L20BF-2 & L20 DVF-2 Item # 1 2 3 4 5 6 7 8 9 10 10 12 13 Catalog # 17M63 52L38 52L37 52L12 34121H 10050088 12058820 52L13 64L98 52L15 15050040 10850187 17M61 17M62 Description Door Assembly, Charcoal Upper Trim Assembly Blower, Air Circulating Thermal Fan Switch Disc, High Limit, Manual Reset (Spill Switch) L250-30F Rheostat (speed control for blower) Power Cord (blower) On / Off Switch, Burner Control Valve NG (with LP Conv.
PAGE 26
OPTIONAL ACCESSORIES – Models: L20BF-2 & L20 DVF-2 Item # 1 2 3 4 5 6 7 Catalog # 14M07 14M05 H0251 H0249 (RC) 89L36 19L92 88L53 Model DK2-G BRK-L20 RC-STAT RC WTK TSPK-C FGE Description Door Kit, L20, Gold Brickaded Interior Kit, L20 Deluxe Remote Control (Thermostatically controlled) Remote Control (Standard On / Off) Wall Thermostat Kit Touch-up Spray Paint Kit, Charcoal Glowing Embers, 1 oz bag 1 2 4 5 3 6 7 PAGE 26
PAGE 27
SPECIFICATIONS: Model L20 BF-2 Flue Size 4” - Top Vent Height Overall Height to Flue Outlet 29” 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 Features Variable Flame Control. High Efficiency Heat Exchanger. Natural Convection & Radiant Heat. Standing Pilot / Operates During Power Outages. Remote Control & Wall Thermostat Capable.
PAGE 28
SPECIFICATIONS: Model L20 DVF-2 Top View Flue Size Intake Pipe 4” – Top Vent 6.625” (6 5/8”) Height Overall Height 30 1/2” 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. Performance Features Variable Flame Control. High Efficiency Heat Exchanger. Natural Convection & Radiant Heat. Standing Pilot / Operates During Power Outages. Remote Control & Wall Thermostat Capable.
PAGE 29
SAFETY/ LISTING LABEL (RATING PLATE) PAGE 29
PAGE 30
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 Technician Description PAGE 31
PAGE 32
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. LENNOX reserves the right to make changes at any time, without notice, in design, materials, specifications, prices and also for discontinued colors, styles and products. Consult your local distributor for fireplace code information. Printed in U.S.A  LENNOX HEARTH PRODUCTS 2001 P/N 775,021M REV.