Outside Air Installation

The outside air assembly may be installed according to the following requirements:

A)Duct length should be kept to a minimum. The maximum length of a 4” interior diameter (100 mm) insulated flexible duct is twenty (20) feet (6.1 m). (See note below).

B)The air intake register must not be installed more than ten (10) feet (3050 mm) above the base of the fireplace.

C)The fresh air must come from outside the house. The air intake must not draw air from the attic, basement or garage.

D)The air intake should be installed where it is not likely to be blocked by snow or exposed to extreme wind and away from automobile exhaust fumes, gas meters and other vents.

E)The duct and register may be installed above or below floor level.

Make a 4-1/4” (110 mm) hole in the outside wall of the house at the chosen location. From outside, place the outside air register in the hole (open side down) and fasten the register to the wall with screws as shown (see Figure 20). Slip the pipe into the insulated sleeve. Place the insulated pipe over the register tube and over the fireplace’s outside air connector (see Figure 21). At each end, carefully pull back the insulation and plastic cover exposing the flexible pipe. Using the aluminium tape provided, wrap the tape around the joint between the flexible pipe and the air inlets. Carefully push the insulation and plastic cover back over the pipe. Using aluminium tape, fasten the plastic cover in place.

NOTE: We recommend not to exceed twenty (20) feet of 4” flexible pipe. If you require a longer length we recommend that you use a 5” diameter flexible pipe for the complete run up to thirty (30) feet and a 6” diameter pipe for a run of up to forty (40) feet.

 

 

OUTSIDE CONNECTION

Outside

 

Aluminum Tape

Intake

 

 

 

 

 

Plastic Cover

Screw

 

 

 

 

Insulation

Opening

 

Flexible Pipe

Facing

 

 

Down

 

Aluminum Tape

 

 

Wall

 

 

Figure 20

 

 

 

Fireplace

OUTSIDE AIR CONNECTION

 

Connection

TO THE FIREPLACE

Aluminum Tape

Fireplace

 

Plastic

 

 

Cover

 

 

Insulation

 

 

Flexible Pipe

 

Figure 21

Aluminum Tape

14

THE CHIMNEY SYSTEM

Chimney Installation Notes

1.If possible, install an interior chimney as it will provide better perfor- mance. In areas with continuous temperatures below -18° C (0° F), the use of an exterior chimney increases the likelihood of operating problems such as low draft, high rate of creosoting, and poor start-up characteristics. Exterior chimneys are also prone to down-draft and flow reversal. Installations, which are located on lower floors in the house, such as in a basement, in combination with outside chimney, are especially prone to flow reversal.

2.The Lennox Hearth Products fireplace model Ladera may be installed only with Security Chimneys International 6” diameter chimney sys- tems. The Ladera fireplace may also be installed with a 7’’ chimney system (ASHT or HT6103) using the optional 6AW7 7’’ adaptor (7’’ AC chimney is not allowed). For more information refer to chimney installation manual.

3.A chimney venting a fireplace shall not vent any other appliance.

4.The minimum chimney height is twelve (12) feet (3.7 m). In altitude, add 18” (450 mm) to the chimney for every 2,000 feet (600 m) above sea level.

5.All chimney installations must include at least one support. Re- ducing the amount of chimney weight on the fireplace will help avoid the noise created when the fireplace expands. This can be achieved by having the chimney supported by the supports. The maximum chimney length that can be supported by the fireplace is nine (9) feet (2.75 m) for S-2100+/HT6000+, twelve (12) feet (3.7 m) for ASHT+ / HT6103+ and 26 feet (8 m) for AC chimney.

6.The chimney must extend at least three (3) feet (915 mm) above its point of contact with the roof and at least two (2) feet (610 mm) higher than any wall, roof or building within ten (10) feet (3m) of it (Figure 22).

7.If the chimney extends higher than five (5) feet (1,500 mm) above its point of contact with the roof, it must be secured using a roof brace.

8.A rain cap must be installed on top of the chimney. Failure to install a rain cap may cause corrosion problems.

9.Cut and frame square holes in all floors, ceilings, and roof that the chimney will go through to provide a 2” (50 mm) clearance between the chimney and any combustible materials. Do not fill this 2” space with insulation or any other combustible material.

10.Portions of the chimney which may extend through accessible spaces must be enclosed to avoid contact with combustible materials or damage to the chimney.

11.When offsets are used, the pipe may not penetrate a ceiling or floor unless it is running vertical (no 30° offsets).

two (2) feet Min.

 

three (3) feet Min.

ten (10) feet

Figure 22

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.