Lennox Hearth LBC-4324 Offset Elbow Assembly, Return Elbow Assembly, Combustion Air Kits

Offset Elbow Assembly

Offset elbows install the same as chimney sections. First, snap the inner section INTO the preceding inner section of flue. Check connec- tion by pulling up slightly to ensure a tight fit. Next, the outer sections snap lock OVER the preceding outer section of chimney. Again, check outer section by pulling up slightly to ensure proper connection is made.

Return Elbow Assembly

Return elbows install the same way as round terminations and stabilizers:

Step 1. Hold return elbow over top of last chimney section.

Step 2. Center inner slip section into inner flue pipe-slip down.

Step 3. Center outer-locking section over outer chimney pipe. Push down until locking joint has firmly engaged.

Step 4. Pull up slightly on return elbow to ensure locking joint has firmly engaged.

Step 5. Secure support straps to framing members by nailing under tension in sheer (Figure 42 ).

Return

Elbow

Figure 42

Note: The return elbow assembly performs the same function as a stabilizer. Consider this when determining the need for a stabilizer.

Note: Do not apply excessive pressure to any subsequent chimney section following return elbow assembly when installing. Ensure that each subsequent chimney section is securely attached by testing as noted above.

Combustion Air Kits

You may use the combustion air kit, Model FOAK-4 or FOAK-4LD, with the LBR/LBC Series fireplaces. Refer to the installation instructions packed with the air kit for specific installation information. The outside air kit must be in- stalled before the fireplace is totally framed and enclosed within the finished walls.

The combustion air kit provides for outside air to be drawn into the fireplace as an aid for combustion. If installed, only one combustion air kit is needed and it will be installed on the left side of the fireplace. If additional length of air duct is necessary, purchase locally available U.L. Class 0 or Class 1 metallic duct. The duct may extend up to 50' (15.24 m) in any direction.

Note: When installing the air duct vertically, DO NOT terminate the air duct closer than 3' (914 mm) below the chimney top.

There is a hand operated shut-off lever located in the left side of the fireplace opening behind the screen. To open, pull all the way. The combus- tion air damper should be fully open when the fireplace is in use and completely closed when the fireplace is not being used. This will prevent outside cold air from entering the dwelling.

Operate the actuator through several cycles including the "lock position. Ensuring proper operation and freedom of movement. Return the actuator arm to the locked position.

CAUTION: NEVER LOCATE THE AIR INLET WHERE IT COULD BE BLOCKED BY SHRUBS, SNOWDRIFTS, ETC. NEVER LOCATE AIR INLET IN A GARAGE OR IN ANY AREA WHERE THERE IS ANOTHER FUEL BURNING APPLIANCE OR PRODUCTS EMITTING COMBUSTIBLE GASES SUCH AS PAINT, GASOLINE, ETC. IN COLD CLIMATES IT IS RECOMMENDED THAT THE COMBUSTION AIR DUCT BE INSULATED.

The outside air ducting may be installed upwards through framing and ceiling joists, with the inlet hood installed through an outside wall. Air duct- ing may also be installed downward through floor joists and under the dwelling to a ventilated crawlspace not considered part of the living area.

Note: Do Not terminate the combustion air kit in an attic space under any circumstances.

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

Forced Air Kit

If you are installing the Lennox Forced Air Kit, Model LFAK-2000, see the instruction sheet provided with the kit for electrical wiring re- quirements. The fireplace has been pre-wired at the factory but must be connected to main power supply at the time of installation if the LFAK-2000 is to be installed later. The electrical connections must be made before the fireplace is framed and enclosed in the finished walls.

CAUTION: ELECTRICAL CONNECTIONS SHOULD ONLY BE PERFORMED BY A QUALI- FIED, LICENSED ELECTRICIAN. MAIN POWER MUST BE OFF WHEN CONNECTING FANS TO MAIN ELECTRICAL POWER SUPPLY OR PER- FORMING SERVICE.

Variable Speed Wall Switch

Refer to the installation instructions provided with the Variable Speed Wall Switch, Model VSWS, for installation details.

OPTIONAL EQUIPMENT

CONSIDERATIONS

Gas Line Connection

Always plumb gas line installation per local codes. Check all connections with soap suds; leaks will bubble. Never test any gas line con- nection with a match or open flame.

This provision is intended for connection to a decorative gas appliance incorporating an au- tomatic shut-off device and complying with the Standard for Decorative Gas Appliances for installation in vented fireplaces, ANSI Z21.60 (1991) or American Gas Association draft re- quirements for Gas-Fired Log Lighters for Wood Burning Fireplaces, Draft No. 4 dated August, 1993. Install in accordance with the National Fuel Gas Code, ANSI Z223.1. This complies with the revised U.L. 127 standard.

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