Lennox Hearth LSO-43 Chimney System, Chimney Height, Minimum Height, Free Standing Installation

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CHIMNEY SYSTEM

These fireplaces are designed and code listed for use with Security's FTF10 chimney System only. Always use Security's FTF10 chimney components with these fireplaces. Do not modify or alter these components as this may cause a potential serious hazard and void the Warranty.

Note: Do not insulate the chase cavity with blown or fill type insulation materials.

Note: Local codes may not require firestops at the ceiling levels for outside chase installa- tions. However, it is recommended for safety and the reduction of heat loss.

Chimney Height

The total height of your completed fireplace system from the surface the fireplace rests on to the chimney top must not exceed 80' (24.4) and must also meet minimum height requirements. Refer to the minimum system height chart.

MINIMUM SYSTEM HEIGHT

Security's FTF10 Pipe

Vertical	10' 6"*
Installation	( 3.2 m)
One	14'
Offset	( 4.3 m)
Two	22'
Offsets	( 6.7 m)

*When the fireplace is installed anywhere closer than 10 feet from any building or structure.

Minimum Height

The minimum height for a complete system is 10' 6" if installed with an FTF10-CT1 or FTF10- CTDT terminations. Any other termination requires a 14' minimum system height.

Free Standing Installation

The system height may be reduced to a single length of FCTF10-36 pipe and termination (minimum 7' 8") with either the FTF10-CTD or FTF10-CT1. The fireplace must be installed as a free standing system and located a minimum of 10' away from any building or structure (refer to Figure 1 ).

ASSEMBLY OUTLINE

Before You Start

Check your inventory list to be sure you have all the necessary parts supplied in good usable condition. Check also for any concealed damage.

LOCATION OF FIREPLACE

Carefully select the proper location for chimney obstructions, clearance to side wall(s) air inlet location and aesthetics. With proper pre-plan- ning, a slight adjustment of a few inches can save considerable time and expense later dur- ing construction and assembly. See Figure 2 for some examples.

LIVING SPACE

	Air Inlet
	(Inlet Must
Optional	Be Free Of Any
Hearth	Obsutuctions)
Extension
	PATIO

Figure 2

When choosing a location, care must be taken to avoid places where flooding or running water may be a problem.

Carefully consider the position of the fireplace opening with respect to the location of adjacent or nearby stairwells, doors, windows, walk- ways and over hanging trees, patios and wires.

When locating the fireplace, consideration must be given to combustibles and final finishing. See Figure 3 and confine the final location of combustible finish materials to the "Safe Zone".

DO NOT place furniture or other items such as plants or decorative objects within 60" of the fireplace front face.

Frame Surface Not

To Be Covered With

Combustible Materials

Wall

18”Covering

45°

1”
Door
Opening
	Safe
18”	Zone

Figure 3

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

ASSEMBLY STEPS

Note: The following steps represent the normal sequence of installation. Each installation is unique, however, and might require a different sequence.

1.Position firebox prior to framing or into prepared framing.

2.Waterproof the fireplace (see Waterproofing The Fireplace on page 5 ).

3.Install the chimney system.

4.Install air inlet.

5.Plumb gas line if a decorative gas appliance will be used. (Gas connections should only be performed by an experienced, licensed/certi- fied tradesman.)

6.Complete the installation, finish wall mate- rial, surround and hearth extension to your individual taste.

7.Assemble and attach optional glass door assembly.

Study the three dimensional illustration (Fig- ure 1 ) to get a general idea of each element of your fireplace system.

PRE-INSTALLATION NOTES

The fireplace may be installed directly on a combustible floor or raised on a platform of an appropriate height. Do not place the fireplace on vinyl or other soft floor coverings. It may, however, be placed on flat wood, plywood, particle board or other hard surfaces.

Be sure the fireplace rests on a solid continu- ous floor or platform with appropriate framing for support.

The fireplace may be positioned and then the framing built around it, or the framing may be constructed and the fireplace positioned into the opening.

Usually, no special floor support is needed for the fireplace, however, to be certain:

1.Estimate the total weight of the fireplace system including chimney and surround ma- terials such as brick, stone, etc., to be in- stalled. Shipping weights for the fireplace may be found on page 18.

2.Measure the square footage of the floor space to be occupied by the system, surrounds and hearth extensions.