Lennox Hearth L20 DVF-2 manual Planning Your Installation, Local and National Code Requirements

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PLANNING YOUR INSTALLATION

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.

Air Circulation Blower: The blower electrical power cord must be electrically grounded per local codes or per electrical codes:

In USA, NEC, ANSI / NFPA 70 - latest edition.

In Canada, CSA C22.1

WARNINGS

ELECTRICAL GROUNDING INSTRUCTIONS. THIS APPLIANCE IS EQUIPPED WITH A THREE-PRONG (GROUNDING) PLUG FOR YOUR PROTECTION AGAINST SHOCK HAZARD AND SHOULD BE PLUGGED DIRECTLY INTO A PROPERLY GROUNDED THREE-PRONG RECEPTACLE. DO NOT CUT OR RE- MOVE THE GROUNDING PRONG FROM THIS PLUG.

WARNING: TO AVOID ELECTRICAL SHOCK, ALWAYS ENSURE THAT THE POWER CORD IS UNPLUGGED (I.E., THERE IS NO ELECTRICAL POWER TO THE CIRCULATION BLOWER) BEFORE HANDLING THE CIRCULATION BLOWER OR PERFORMING ANY WORK ON THE APPLIANCE.

High Altitude: Gas inputs shown are for elevations up to 4500 feet. For elevations above 4500 feet, contact your gas supplier or qualified service technician regarding the necessary dera- tion of appliance (deration: replacing burner orifice with a smaller one to reduce input). Ratings must be reduced at the rate of 4 percent for each 1,000 feet above sea level. Refer to (for USA) NFPA 54 / ANSI Z223.1 - latest edition for orifice resizing.

TOOL / EQUIPMENT LIST

The following tools and equipment are recommended for com- pleting the partial assembly required when the appliance is installed:

•7/16”, 3/4” open end wrenchs.

•1/4”, 3/8” nut drivers.

•Pipe wrench.

•Phillips head screw driver.

•Flat head screw driver.

•Pipe sealant compound.

•Leak test fluid “U” tube manometer or pressure gauge (0 - 16” (inches water column) H2O scale.

GAS PRESSURE (WC = Water Column)

Minimum inlet gas supply pressure for the purpose of input adjustment:

Natural Gas - 4.5” WC min. – 7.0” WC max.

Propane (LP) - 11” WC min - 13.0” WC max.

Manifold gas supply pressure:

 

 

LOW

 

HIGH

Natural Gas - 1.8” + / -.3” WC

(to)

3.5” + / -.3” WC

17,000 BTU / hr

 

26,000 BTU / hr

Propane (LP) 6.6” + / -.3” WC

(to)

10” + / -.3” WC

17,000 BTU / hr

 

24,000 BTU / hr

Note: ” WC = Inches Water Column

PRESSURE TAPS

Gas Inlet Pressure Tap - Located on bottom left of gas valve.

Gas Outlet (manifold) pressure tap - Located on bottom right of gas valve.

Gas Control Valve

Pilot Adjustment Screw

Convertible HI/LO

Regulator

Regulator

Gas Control Knob

 

Cap

Piezo Igniter

Inlet

Wiring

 

Pressure

Terminals

 

Tap

Outlet Pressure Tap

 

 

Pressure Testing: See Pressure Testing on page 12.

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Contents Retain this Manual for Future Reference Freestanding Vented GAS Fired Room Heaters775,021M Rev. C, 8/04 Important Warnings / Cautions Table of Contents Planning Your Installation Local and National Code RequirementsTool / Equipment List LOW HighQuestions to ASK the Local Building Official Manufactured Mobile Home Requirements Important NotesRear Wall or Alcove CornerVertical Termination With 2 Offsets Vertical Termination with no OffsetsHorizontal Termination With 1 Offset Installation Direct Vent System Components Model L20 DVF-2 onlyInstallation Model L20 DVF-2 only SV4MCKCony Model L20 BF-2 only Vent Configuration RequirementsFor vent termination requirements, see GAS Supply Hookup ALL Models Pressure TestingSupply Line Size Requirements Door Operation ALL Models Installing LOG SET GAS Appliance Final Assembly ALL ModelsGlowing Embers Installation Check List ALL Models Verify that the gas line has been purged of airALL Models For Your Safety Read Before Lighting Care and OperationGas Control Knobs Lighting and Shutdown InstructionsCombustion Chamber Relief Door ALL Models BREAK-IN PeriodCirculation Blower Operation Parts List Propane Conversion ProcedurePropane Conversion CanadaReference Information Burner Flame AppearanceMaintenance Air Shutter Adjustment ALL Models Periodic Check of Pilot and Burner FlamesCycle unit a minimum of 2 times Pilot Flame AppearanceGAS Control and Safety System Wiring Diagram Wiring DiagramsModel L20 BF-2 Model L20 DVF-2 Troubleshooting Qualified Technicians Only ALL ModelsTroubleshooting Check List Qualified Technicians Only Model L20 BF-2 only Spill SwitchSpillage Test Procedure Replacement Parts Models L20BF-2 & L20 DVF-2 Item # Catalog # Description Where UsedOptional Accessories Models L20BF-2 & L20 DVF-2 Item # Catalog # Model DescriptionSpecifications Model L20 BF-2 Top View Side ViewSpecifications Model L20 DVF-2 SAFETY/ Listing Label Rating Plate SAFETY/ Listing Label Rating Plate Service and Maintenance LOG Ownership Records775,021M REV. C 08/2004

L20 DVF-2, L20 BF-2 specifications

The Lennox Hearth L20 DVF-2 and L20 BF-2 are two innovative gas fireplaces that offer modern heating solutions for homes looking to combine functionality, style, and efficiency. Both models are designed with advanced technology to deliver reliable performance and aesthetics that enhance any living space.

The L20 DVF-2 is a direct vent fireplace that utilizes a sealed combustion system, allowing it to operate efficiently without drawing air from the room. This feature not only improves energy efficiency but also helps maintain indoor air quality since outside air is used for combustion. One of its standout features is the ability to provide a range of heat output options, allowing homeowners to adjust the warmth to their preference. The fireplace comes with a convenient remote control, enabling effortless operation from anywhere in the room.

The L20 BF-2, on the other hand, is a conventional vent fireplace, offering a different installation option ideal for various home designs. Similar to the DVF-2, the BF-2 model provides a wide range of heat output, ensuring comfort in chilly conditions. It features a striking design with a large viewing area, allowing for a mesmerizing flame display that serves as a focal point in any room.

Both models are equipped with Lennox's patented Powerflow technology, which optimizes heat distribution throughout the space. This technology not only enhances comfort but also ensures that energy is used efficiently. The fireplaces also feature easy-to-use controls and customizable flame height settings, giving users precise control over their heating experience.

In terms of design, the L20 DVF-2 and L20 BF-2 come in various finishes and styles, allowing them to seamlessly blend with different home aesthetics. Their sleek and contemporary appearance complements modern interiors, while still fitting into more traditional décor in subtle ways.

Overall, the Lennox Hearth L20 DVF-2 and L20 BF-2 provide effective heating solutions paired with advanced technologies and stylish designs. Whether a homeowner desires a direct vent option or a traditional vent fireplace, both models deliver energy-efficient performance, exceptional heat distribution, and a stunning flame display that can enhance the ambiance of any living space. These fireplaces are not just heating appliances; they are an investment into comfort and elegance for years to come.
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