Lennox Hearth LSO-43 installation instructions Special Offset Instructions, Offset Calculations

Page 12

SPECIAL OFFSET INSTRUCTIONS

To clear any overhead obstructions, you may offset your chimney system using Security's 30° offset and return elbows. Use two elbows

-an offset elbow to initiate the offset and a return elbow to terminate it. A 30° offset elbow, angling in any direction, may be the first component used off the top of the fire- place flue collar.

The offset and return elbows may be attached together, or a section or sections of chimney may be used between, but do not exceed 20' in total length between elbows. If sections of pipe exceed 10' between elbows, a chimney stabi- lizer must be used at the midpoint (Figure 33 ). The stabilizer support straps must be attached under tension (in shear) to structural framing members above. When two sets of elbows are used, the maximum combined length of chim- ney used between elbows cannot exceed 20' (Figure 34 ). Example: If C1 = 10' then C2 cannot exceed 10'.

If an offset exceeds 6' in length, each chimney joint beyond the first 6' of offset to the return elbow, must be secured by a No. 8 x ¹⁄₂" sheet metal screw located at the underside of the joint (Figure 35 ).

A¹⁄₈" diameter hole must be drilled in the chimney joint using a ¹⁄₈" diameter drill. Hole should be drilled in center of joint overlap (see Figure 36 ). Be sure to drill only through the outer chimney casting. Do not puncture the inner flue.

Return elbow support straps must be securely attached under tension (in shear) to structural framing members above. Do not substitute a FTF10-30 offset elbow in place of a FTF10-E30 return elbow.

OFFSET CALCULATIONS

Step 1. Use Offset Chart to determine amount of horizontal offset (A) and height (B) for various chimney section assemblies.

Step 2. Use “Height of Chimney Only” column in The Vertical Elevation Chart to determine combinations of chimney used above return elbow to achieve desired heights. Reference Components Effective Height Chart in vertical elevation chart section on page 13.

Step 3. Use Elevation Chart as job estimator only. Add necessary firestop spacers and sta- bilizers as required. Firestop spacers must be used as shown in Figures 20 and 21 and stabilizers as shown in Figure 25.

A1

Return

Elbow

20'

Max.

B1

Stabilizer

10'

A2

C2

A1

C1

A2

C2

B2

A1

B1

C1

B2

B1

12

Maximum offset of chimney system is 30° . Two offsets must not be assembled to form a 60° offset. However, two sets of offset and return elbows may be used on a single flue system, provided the total height of the sys- tem exceeds 25'.

Max.

Offset

Elbow

Figure 33

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

Figure 34

 

 

 

 

 

 

 

 

 

Joints

Chimney

 

 

 

 

 

4'

Required

at

6'

 

 

 

 

 

Past

Section

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Screws

Joint

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Offset

Every

 

 

No. 8 x ¹⁄₂" SMS

 

 

Required 6'

in

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6'

 

of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

First

 

 

 

 

 

 

 

 

 

Screws for

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

Joints

 

 

 

 

 

 

 

 

 

 

Figure 35

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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 Typical Free Standing Installation IntroductionGeneral Information Clearances and Height RequirementsAssembly Outline Assembly StepsPRE-INSTALLATION Notes Chimney SystemInstalling the Fireplace Waterproofing the FireplaceAir Inlet ClearancesFireplace Specifications Front ViewSide View Left Top ViewFraming Specifications FTF10Installing the Chimney System FeetOr Ceiling Chimney 30 Offset Through FloorSpace 10 3m Max Firestop Space Above Using a FTF10-CT1 Chase Termination Using a FTF10-CT2 Chase TerminationUsing a FTF10-CTDT Chase Termination Roof Pitch Model Flat to 6/12Multiple Terminations TEN Foot Rule SummaryFTF10 Chimney Component Calculations Special Offset Instructions Offset CalculationsFTF10 Vertical Elevation Chart HeightChimney Only Chimney OnlyFTF10 Offset Elevation Chart Installing OffsetsFirst, review the Offset Elevation Chart and for reference Underside Of ChimneyOptional Equipment Considerations Fireplace FinishesHearth Extensions and Wall Shields Value = 1/k = r x thickness of material used RM = rM x TS = 0.05 x 3/4 =RM = rM x TS = 0.20 x 1/2 = ShieldInstallation Components Finish to Your TasteModel Catalog Number LSO-43Round Termination 63L43 Firestop Spacer Flat 63L36Combination Offset/Return Elbow 63L34 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.
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