Using a FTF8-CTDT Chase Termination:

Refer to specific installation instructions in- cluded with the FTF8-CTDT chase termination for clearance and installation details.

Using a FTF8-CT1 Chase Termination:

Refer to specific installation instructions in- cluded with FTF8-CT1 chase terminations for clearance and installation details.

Using a FTF8-CT2 Chase Termination:

Refer to specific installation instructions in- cluded with FTF8-CT2 chase terminations for clearance and installation details.

Using a FTF8-CTT Chase Termination:

Refer to specific installation instructions in- cluded with FTF8-CTT chase terminations for clearance and installation details.

Using a FTF8-ATT Chase Termination:

Refer to specific installation instructions in- cluded with FTF8-ATT chase terminations for clearance and installation details.

Note: It is recommended that all exterior ex- posed metal fireplace 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.

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 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, adverse wind conditions, etc., may require a taller chimney should the fireplace not draft properly (see Figure 35 ).

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 36 ).

CTD

18"

18"

CTDT CTDT

24"

24"

Figure 36

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

FTF8 CHIMNEY COMPONENT

CALCULATIONS

The minimum installed height of the com- pleted fireplace system is 15' 0". The maxi- mum height is 60' 0".

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

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:

Less Than 10'

3'

Min

Figure 35

2' Min.

10'

3'

 

Min

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

The Fireplace

=

43-1/2"

FTF8-12

=

10-1/4"

FTF8-18

=

16-1/4"

FTF8-36

=

34-1/4"

FTF8-48

=

46-1/4"

FTF8-CTD Termination

=

4"

FTF8-CT1 Termination

=

12" to 18"

FTF8-CT2 Termination

=

15" to 23"

FTF8-CTDT Termination

=

12" to 18"

FTF8-CTT Termination

=

6" to 14"

FTF8-ATT Termination

=

8" to 14"

FTF8-S4 Stabilizer *

=

3"*

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

11

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Lennox Hearth RDI-36-H, HCI-36-H TEN Foot Rule Summary, Multiple Terminations, FTF8 Chimney Component Calculations
Page 10 Page 12

RDI-36-H, HCI-36-H specifications

The Lennox Hearth HCI-36-H and RDI-36-H represent a pinnacle of innovation and efficiency in the world of gas fireplaces. These models are highly regarded for their combination of aesthetic appeal, advanced technology, and exceptional performance, making them an excellent choice for both new constructions and retrofitting existing spaces.

Starting with the HCI-36-H, this direct vent gas fireplace is designed for optimal heating while providing a stunning visual centerpiece. It features a sleek glass front that enhances the flame experience, showcasing the lifelike faux logs and glowing embers. The HCI-36-H is equipped with a powerful heat exchanger that maximizes heat output, ensuring your space remains warm and comfortable.

On the other hand, the RDI-36-H offers a more customizable experience. This model features a variety of decorative options, allowing homeowners to personalize their fireplace to fit their home’s aesthetic. From customizable front panels to decorative trim kits, the RDI-36-H is designed to cater to individual tastes while ensuring robust functionality.

Both models incorporate advanced technologies that improve energy efficiency and user experience. They utilize Lennox's patented flame technology, which creates a realistic fire while maintaining high efficiency. This technology also helps reduce emissions, making it an environmentally friendly choice. With an impressive efficiency rating, both units provide substantial warmth without excessive energy consumption.

User convenience is another significant aspect of these fireplaces. They come with an easy-to-use remote control, allowing you to adjust the flame height and heat output from the comfort of your couch. Additionally, the units offer a variety of safety features, including an automatic shut-off system that ensures peace of mind.

The HCI-36-H and RDI-36-H also boast a quick and straightforward installation process thanks to their direct vent capabilities, which minimize the need for extensive ductwork. This makes them ideal for existing living spaces, as well as new homes.

In conclusion, the Lennox Hearth HCI-36-H and RDI-36-H gas fireplaces epitomize the blend of design, technology, and efficiency. With features like customizable designs, advanced flame technology, and user-friendly operation, these models provide not just warmth, but a beautiful focal point that enhances any room. Whether you prioritize aesthetic or function, Lennox offers two exceptional options that cater to a variety of preferences.
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