Lennox Hearth LSO-43 installation instructions Multiple Terminations, TEN Foot Rule Summary

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Note: It is recommended that all exterior ex- posed metal chimney components; such as ter- minations, flashings, storm collars and/or flue be painted with a premium quality, high tem- perature, rust preventative paint designed for metal. This is especially important when instal- lations are made in abnormally adverse or corro- sive environments; such as near lakes, oceans or in areas with consistently high humidity condi- tions. Consult the paint manufacturers instruc- tions for proper preparation and application.

MULTIPLE TERMINATIONS

If more than one termination is located in the same chase or within the same general prox- imity, we suggest they should be separated in distance at least 24" horizontally from flue center to flue center and stacked or staggered vertically at least 18" apart, from the termina- tion of one smoke exit to the termination of another smoke exit (Figure 32 ).

FTF10 CHIMNEY COMPONENT CALCULATIONS

The minimum height for a complete system is 7' 8" if installed with FTF10-CT1 or FTF10-CTDT terminations. The maximum height is 80' 0".

To determine the number of chimney sections and chimney components required, follow these steps:

TEN FOOT RULE SUMMARY

The minimum chimney height above the roof and/or to adjacent walls and buildings is speci- fied by all major building codes.

If the horizontal distance from the peak of the roof is less then 10', the top of the chimney must be at least 2' above the peak of the roof.

If the horizontal distance from the chimney edge to the peak of the roof is more than 10' a chimney height reference point is established on the roof surface 10' horizontally from the chimney edge. The top of the chimney must be

18" (457mm)

24"

(610mm)

Figure 32

FTF10-CTD

FTF10-CTDT

18" (457mm)

24" (610mm)

1.Determine total vertical height of the fireplace installation. This dimension is the distance from the surface the fireplace sets on to the point where smoke exits from the termination.

2.Determine the number of chimney compo- nents required, except chimney sections. This would include firestop spacers, stabilizers, roof flashing, etc.

3.The effective heights of the components are:

The Fireplace

=

49 ⁵⁄₈"

FTF10-12

=

10 ¹⁄₄"

at least 2' above this reference point. In all cases, the chimney cannot be less then 3' above the roof at the edge of the chimney.

The 2' in 10' rule is necessary in the interest of safety but does not ensure smoke-free opera- tion. Trees, buildings, adjoining roof lines, ad- verse wind conditions, etc., may require a taller chimney should the fireplace not draft properly (Figure 31 ).

This suggestion is provided in the interest of better operation. If the terminations are lo- cated too close to each other, smoke may migrate from one flue into the other.

FTF10-18

=

16 ¹⁄₄"

FTF10-36

=

34 ¹⁄₄"

FTF10-CTDT Termination

=

12" to 18"

FTF10-CT1 Termination

=

12" to 18"

FTF10-CT2 Termination

=

15" to 23"

FTF10-CTT Termination

=

6" to 14"

FTF10-ATT Termination

=

8" to 14"

FTF10-S4 Stabilizer *

=

3"*

Less than

10' (3m) To

Roof Peak

 

 

 

 

 

 

 

 

 

 

 

 

3'

2' (610mm)

 

Min.

(914mm)

 

 

 

 

 

Min.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10' (3m)

FTF10-CT1

3'

2' (610mm)(914mm)

Min.Min.

*Required for every 30' of vertical chimney and/or 10' of offset chimney.

4.Determine amount of chimney height re- quired by subtracting total combined height of all pre-selected components (fireplace and chimney components from total desired height.)

Reference Vertical Elevation Chart and deter- mine the number of chimney sections (quan- tity and length) required.

Figure 31

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

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Contents Wood Burning Outdoor Fireplace P/N 850,015M REV. C 03/2007 Retain These Instructions For Future ReferenceOTL Report No -F-01-2 Table of Contents Clearances and Height Requirements Typical Free Standing InstallationIntroduction General InformationChimney System Assembly OutlineAssembly Steps PRE-INSTALLATION NotesClearances Installing the FireplaceWaterproofing the Fireplace Air InletTop View Fireplace SpecificationsFront View Side View LeftFTF10 Framing SpecificationsFeet Installing the Chimney SystemSpace 10 3m Max Firestop Space Above Or CeilingChimney 30 Offset Through Floor Roof Pitch Model Flat to 6/12 Using a FTF10-CT1 Chase TerminationUsing a FTF10-CT2 Chase Termination Using a FTF10-CTDT Chase TerminationFTF10 Chimney Component Calculations Multiple TerminationsTEN Foot Rule Summary Offset Calculations Special Offset InstructionsChimney Only FTF10 Vertical Elevation ChartHeight Chimney OnlyUnderside Of Chimney FTF10 Offset Elevation ChartInstalling Offsets First, review the Offset Elevation Chart and for referenceFireplace Finishes Optional Equipment ConsiderationsHearth Extensions and Wall Shields Shield Value = 1/k = r x thickness of material usedRM = rM x TS = 0.05 x 3/4 = RM = rM x TS = 0.20 x 1/2 =LSO-43 Installation ComponentsFinish to Your Taste Model Catalog NumberOffset/ Return Package 63L23 Round Termination 63L43Firestop Spacer Flat 63L36 Combination Offset/Return Elbow 63L34Orange, CA 850,015M REV. C 03/2007

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.