Lennox Hearth CR-3835R installation instructions Framing Specifications

Page 7

FRAMING SPECIFICATIONS

Back Wall of Chase/Encloslure Including

Note: No Wall Shield

Finishing Materials if any

Required On This Wall

 

D

B

Header

A

C

Rough

Framing

Face

(Unfinished

Shown)

11⁷⁄₈"

(302mm)

45°

C

8" Max.

(203mm)

8" (203mm) Min. To

Protected Side Wall

Framing Without False Header

Figure 12

Figure 14

Note: Combustible Materials

Inside Corner Using Outside Air

May Be Placed In Shaded Area.

Back Wall of Chase/Encloslure

Including Finishing

Materials if any

C

Rough Framing

 

A

 

 

 

 

 

 

Face (Unfinished

Outside Corner

Shown)

 

 

 

Figure 13

Framing Dimensions for Ceiling

Framing Dimensions

CR-3835 Series

A

42 ⁵

"

 

(1082 mm)

 

 

 

B

40 ⁵

"

 

(1032 mm)

 

 

 

C

24"

 

 

(610 mm)

 

 

 

D

34 ⁷

"

 

(886 mm)

 

 

 

Note: All framing dimensions calculated for 5/8" nailing flange depth and 1/2" dry wall at the fireplace face. If sheathing the chase or finishing with other thickness materials, calculations will need to be made.

D

C

Roof Framing

Figure 15

B

A

Ceiling Framing

Flue Type

A

B

FTF8 Vertical

16 ¹⁄₂"

16 ¹⁄₂"

at 2"

(419 mm)

(419 mm)

 

 

 

FTF10 Vertical

17"

17"

at 1"

(432 mm)

(432 mm)

 

 

 

FTF10 Vertical

19"

19"

at 2"

(483 mm)

(483 mm)

 

 

 

FTF8 Offset 30°

16 ¹⁄₂"

27"

at 2"

(419 mm)

(686 mm)

 

 

 

FTF10 Offset 30°

17"

26"

at 1"

(432 mm)

(660 mm)

 

 

 

FTF10 Offset 30°

19"

28"

At 2"

(438 mm)

(711 mm)

Figure 16

Framing Dimensions for Roof

Pitch

FTF8 at 2"

FTF10 at 1"

FTF10 at 2"

 

 

 

 

 

 

 

 

C

D*

C

D*

C

D*

 

 

 

 

 

 

 

0/12

16 ¹⁄₂"

16 ¹⁄₂"

17"

17"

19"

19"

 

(419 mm)

(419mm)

(432 mm)

(432 mm)

(483 mm)

(483 mm)

 

 

 

 

 

 

 

6/12

16 ¹⁄₂"

19"

17"

19"

19"

21"

 

(419 mm)

(483 mm)

(432 mm)

(483 mm)

(483 mm)

(533 mm)

 

 

 

 

 

 

 

12 /12

16 ¹⁄₂"

23 ¹⁄₂"

17"

24"

19"

26"

 

(419mm)

(597mm)

(432mm)

(610 mm)

(483mm)

(660 mm)

 

 

 

 

 

 

 

*Perpendicular to roof ridge

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

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Contents Wood Burning Fireplaces 850,048M REV. N/C 01/2007 Retain These Instructions For Future ReferenceOTL Report No -F-20-4 Table of Contents Chimney Clearances and Mantel Height Requirements Typical InstallationIntroduction General InformationBefore You Start Assembly OutlineChimney Height Chase EnclosureFireplace Clearances Assembly StepsPRE-INSTALLATION Notes Installing the FireplaceConsult all local codes Fireplace SpecificationsFraming Specifications 8d Nail Or Equivalent Installing the Chimney SystemRoom Above Firestop Spacer Attic Above 51mm** See **Note Min. Air Space to Combustibles Or CeilingStabilizer Flat to 6/12 Using a CTD Round TerminationUsing a FTF8/10-CTDT Chase Termination Roof PitchSpecial Offset Instructions TEN Foot Rule SummaryMultiple Terminations FTF8 and FTF10 Chimney Component CalculationsReturn Elbow Max Stabilizer 10 Max Offset Offset CalculationsInches Feet/Inches Meters FTF8 Vertical Elevation ChartNumber Of FTF8 InchesChimney Only FTF10 Vertical Elevation ChartNumber Of FTF10 Chimney OnlyFTF8-S4 FTF8 Offset Elevation Chart With FTF8-SS Starter SectionInches FTF10-ES30 Number of FTF10 FTF10 Offset Elevation ChartJoints SectionCombustion Air Kits Installing OffsetsOffset Elbow Assembly Return Elbow AssemblyMantels and Trim Glass DoorsCold Climate Insulation Fireplace FinishesMethods of Determining Hearth Extension and Wall Shield Hearth Extension Dimensions 20 508 mm 38 965 mm203 mm 12 305 mmModel Finish to Your TasteValue = 1/k = r x thickness of material used RM = rM x TS = 0.05 x 3/4 =Installation Components 63L29 Chase Termination 63L51Square 63L52 Cold Climate Kit 63L63Page Orange, CA 850,048M REV. N/C 01/2007

CR-3835R specifications

The Lennox Hearth CR-3835R is a contemporary gas fireplace that exemplifies modern design and advanced technology, creating an ideal centerpiece for any stylish living space. This model seamlessly combines aesthetic appeal with functional efficiency, making it a sought-after choice for homeowners looking to enhance their interiors.

One of the standout features of the CR-3835R is its impressive heat output. With a heating capacity of up to 35,000 BTUs, this fireplace effectively warms up areas ranging from 1,000 to 1,500 square feet, ensuring comfort during chilly months. The adjustable flame height allows users to customize the ambiance according to their preferences, providing a cozy atmosphere or a striking visual display.

The CR-3835R boasts an advanced design that incorporates a sealed firebox. This feature not only improves energy efficiency but also ensures that outdoor air doesn't compromise indoor air quality. The fireplace utilizes an electronic ignition system, which enhances convenience and reliability. With the ability to operate even during power failures, the CR-3835R is a dependable addition to any home.

Another notable characteristic of the Lennox Hearth CR-3835R is its use of high-quality materials. The fireplace is constructed with durable steel and features a refined glass front, allowing an unobstructed view of the flames. The elegant design is complemented by customizable finishing options, enabling users to select styles that align with their interior decor.

In terms of safety, the CR-3835R includes features such as a built-in safety shut-off valve, providing peace of mind for homeowners. The fireplace is also certified for use in a variety of settings, including conventional and direct vent applications. This versatility makes it suitable for a range of installation options.

Moreover, the Lennox Hearth CR-3835R is designed with user-friendly controls, including remote operation capabilities. This function allows for effortless adjustment of settings from the comfort of one's seat, adding an extra layer of convenience to the overall experience.

In summary, the Lennox Hearth CR-3835R combines stylish design, high efficiency, and advanced technology. Its impressive heat output, customizable features, and user-friendly operation make it an excellent choice for those seeking a modern gas fireplace that enhances both comfort and aesthetics in their home. With the CR-3835R, homeowners can enjoy the warmth and ambiance of a traditional fireplace, redefined for contemporary living.
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