Lennox Hearth LSO-43 Finish to Your Taste, Installation Components, Model Catalog Number

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The sum of all “R values” is: .70 + .10 +. 038 + .10 = .938

This would NOT be an acceptable combination of material for the hearth extension since the total calculated “R value” of the materials used is under the required “R value” of 1.19. An additional layer of insulating materials must be used.

Note: Also see NFI Certification Manuals for expanded explanation on calculating “R val- ues” when multiple materials are used.

WARNING: THE CRACK BETWEEN THE FIREPLACE AND THE HEARTH EXTEN- SION MUST BE SEALED WITH A NON- COMBUSTIBLE MATERIAL.

WARNING: WHEN INSTALLING HEARTH EXTENSION IN FRONT, THE FIREPLACE MUST BE RAISED IF HEIGHT OF HEARTH EXTENSION EXCEEDS 5 ³⁄₄" (197MM)

ABOVE THE BOTTOM OF FIREPLACE (FIGURE 43 ).

Cleanout Panel

Do Not Block

5³⁄₄"

(147mm)

Max. Thickness of Hearth Extension when Oasis Models are on the Floor

Figure 43

Secure the hearth extension to the floor to prevent possible shifting.

FINISH TO YOUR TASTE

There are a wide variety of “finished looks” for these fireplaces, from formal wall decor with elaborate mantels to rustic wood paneling or warm brick facings.

Only noncombustible materials like stone, tile, brick, etc., may overlap the front facing. Do not extend these materials beyond the facing and into the firebox area. Be sure not to interfere with the installation and operation of glass doors. Seal all joints between the facing and wall surrounds to prevent air intrusion. Use noncombustible caulking material only to seal the metal facing to the surround material on the finished wall.

Combustible materials may project beyond the sides of the fireplace opening as long as they are kept within the shaded areas illus- trated in Figure 44.

Combustible Materials

Allowed in Shaded

Area

18"

1"

 

(457mm)

(25mm)

 

45˚

 

 

18" (457mm)

 

 

Minimum Distance

 

 

to Protected Side Wall

 

Figure 44

 

 

 

Fireplace Information

 

Model

Catalog Number

Weight

LSO-43

H0303

270 lbs.

LSO-43-H

H0304

270 lbs.

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

INSTALLATION COMPONENTS

The following items are available for use in the installation of this appliance.

(Air Inlet supplied with fireplace. Shown here for replacement purposes only)

Air Inlet Kit (with duct)

LB-101372

Firestop Spacer (30° )

63L37

F10FS30-2

 

 

 

Locking Band

63L60

FLB

Storm Collar

63L59

FSC

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Contents Retain These Instructions For Future Reference OTL Report No -F-01-2Wood Burning Outdoor Fireplace P/N 850,015M REV. C 03/2007 Table of Contents General Information Typical Free Standing InstallationIntroduction Clearances and Height RequirementsPRE-INSTALLATION Notes Assembly OutlineAssembly Steps Chimney SystemAir Inlet Installing the FireplaceWaterproofing the Fireplace ClearancesSide View Left Fireplace SpecificationsFront View Top ViewFraming Specifications FTF10Installing the Chimney System FeetOr Ceiling Chimney 30 Offset Through FloorSpace 10 3m Max Firestop Space Above Using a FTF10-CTDT Chase Termination Using a FTF10-CT1 Chase TerminationUsing a FTF10-CT2 Chase Termination Roof Pitch Model Flat to 6/12Multiple Terminations TEN Foot Rule SummaryFTF10 Chimney Component Calculations Special Offset Instructions Offset CalculationsChimney Only FTF10 Vertical Elevation ChartHeight Chimney OnlyFirst, review the Offset Elevation Chart and for reference FTF10 Offset Elevation ChartInstalling Offsets Underside Of ChimneyOptional Equipment Considerations Fireplace FinishesHearth Extensions and Wall Shields RM = rM x TS = 0.20 x 1/2 = Value = 1/k = r x thickness of material usedRM = rM x TS = 0.05 x 3/4 = ShieldModel Catalog Number Installation ComponentsFinish to Your Taste LSO-43Combination Offset/Return Elbow 63L34 Round Termination 63L43Firestop Spacer Flat 63L36 Offset/ Return Package 63L23850,015M REV. C 03/2007 Orange, CA

LSO-43 specifications

The Lennox Hearth LSO-43 is a state-of-the-art gas fireplace that combines aesthetics with functionality, making it a popular choice for modern homeowners. This fireplace stands out due to its sleek design, efficient heating capabilities, and advanced technologies, ensuring that it not only enhances the ambiance of any living space but also provides warmth and comfort.

One of the main features of the LSO-43 is its contemporary design. With a wide viewing area and clean lines, it serves as a stunning focal point in any room. The fireplace is available in various finishes, allowing homeowners to choose a style that complements their decor. The large glass front provides an unobstructed view of the flames, creating an inviting atmosphere, whether used for cozy gatherings or quiet evenings at home.

In terms of technology, the LSO-43 employs a powerful heating system that ensures optimal warmth. It utilizes a high-efficiency burner that enhances the flame’s realism while maximizing heat output. This eco-friendly setup operates with minimal emissions, meeting stringent environmental standards. The unit also has a variable speed blower that effectively distributes heat throughout the room, ensuring consistent comfort.

Another notable characteristic of the Lennox Hearth LSO-43 is its ease of use. It comes with an intuitive remote control that allows homeowners to adjust flame height and heat settings at the touch of a button. Additionally, the fireplace can be operated with a wall switch, offering flexibility and convenience. This user-friendly design makes it accessible for everyone, from tech-savvy individuals to those who appreciate straightforward functionality.

Installation of the LSO-43 is relatively simple, as it can be vented through the wall or the roof, depending on the home’s layout. Moreover, it is compatible with various venting systems, which allows for flexible placement in both new constructions and existing homes.

Overall, the Lennox Hearth LSO-43 blends modern aesthetics with advanced heating technology. With its efficient energy use, stylish design, and user-friendly features, it presents an excellent option for anyone looking to enhance their living space with a gas fireplace. Whether for enjoying evenings with family or for entertaining guests, the LSO-43 promises warmth and elegance in any environment.