CHIMNEY OFFSET 30° THROUGH FLOOR

OR CEILING

It may be necessary to assemble the chimney at 30° when passing through the floor or ceiling area. Use the F10FS30-2 firestop spacer as shown in Figures 42 and 43.

Support the chimney at floor or ceiling penetration with a FTF13 stabilizer if distance of chimney below ceiling is 10' (3 m) or more. Maintain 2" (51 mm) minimum air space to combustibles from chimney sections. The chimney must pass vertically through the attic space.

Attic Space

F10FS30-2

2" (51mm)

Firestop

Min. Air

Spacer

Space

 

 

FTF13-S4

2" (51mm)

Stabilizer

Min. Air

 

Space

 

10'

 

(3m) Max.

30° Firestop

 

and Attic Above

Figure 42

 

Room Above

 

F10FS30-2

2" (51mm)

Firestop

Spacer

Min. Air

 

Space

2" (51mm)

FTF13-S4

Stabilizer

Min. Air

 

Space

 

10'

30° Firestop

(3m) Max.

and Room Above

 

Figure 43

GLASS DOORS

The LS43ST fireplace require the use of glass doors. The selection of glass doors available for use with these fireplace are: 43LSBF, 43LSBF-B, 43LBF, 43LBF-BB, 43LBF-BS and 43TBA. The use of any other non-listed door on these fireplaces may result in a potential fire hazard and is not recommended.

IMPORTANT: IT IS NECESSARY TO ORDER AND INSTALL THE DOOR STYLE OF YOUR CHOICE. GLASS DOORS ARE NOT OPTIONAL.

16

CAUTION: REMOVE THE PLASTIC PROTECTIVE COATING FROM THE DOORS BRASS PIECES BEFORE ASSEMBLY AND INSTALLA- TION. FAILURE TO REMOVE THE COATING BEFORE FIRST USE WILL RESULT IN DAMAGE TO THE BRASS FINISH.

Make a careful inspection of all parts before installing the doors to insure they are undamaged and complete. Always use two (2) glass door assemblies for each side of the LS43ST fireplace.

CAUTION: DO NOT TOUCH THE DOORS WITH YOUR HANDS WHILE THE FIREPLACE IS IN USE. ALWAYS USE DOOR HANDLES. DOORS WILL BECOME VERY HOT WHEN FIREPLACE IS IN USE.

Note: Design characteristics of a dual-opening fireplace (whether masonry or factory-built) may cause it to not draft properly and smoke. For this reason, glass doors are required with the LS43ST fireplace.

WARNING: THESE FIREPLACES SHOULD BE OPERATED ONLY WITH THE DOORS FULLY OPEN OR FULLY CLOSED (FIGURES 44 AND 45 ). IF DOORS ARE LEFT PARTLY OPEN, GAS AND FLAME MAY BE DRAWN OUT OF THE FIREPLACE OPENING, CREATING RISKS OF BOTH FIRE AND SMOKE.

Glass Doors

Fully Open

Figure 44

Glass Doors

Fully Closed

Figure 45

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

OPTIONAL EQUIPMENTCombustion Air Kit

Use combustion air kit, Model FOAK-4 or FOAK-4LD (Figure 46 ), with these fireplace systems. Refer to installation instructions packed with the air kit for specific information. Outside air drawn into the fireplace supplies air to the fire for combustion. The outside air kit must be installed before the fireplace is framed and enclosed in the finished walls.

IMPORTANT: ALTHOUGH THE COMBUSTION AIR KIT IS DESIGNATED AS AN OPTIONAL ACCESSORY IT IS HIGHLY RECOMMENDED THAT IT BE INSTALLED. DUE TO THE OPERATING CHARACTERISTICS OF MULTI-OPEN FIREPLACES, A PROPERLY INSTALLED SOURCE OF OUTSIDE COMBUSTION AIR CAN ENHANCE THE OPERATING PERFORMANCE OF THE APPLIANCE. THE COMBUSTION AIR KIT IS NOT REQUIRED FOR THE SAFE OPERATION OF THE LS43ST.

There is a one-hand operated shut-off valve located on each side of the fireplace opening behind the screen. Refer to label for directions of operation. The combustion air damper should be fully open when the fireplace is in operation and fully closed when the fireplace is not in use to prevent outside air from entering your home.

If additional length of duct is necessary, purchase locally available 4 inch diameter (12.5 in.²) Class 0 or Class 1 ducting. The duct may extend up to 50' (15.2 m) in any direction.

Combustion

Air Kit

Figure 46

Outside combustion air may be run upwards or vertically through framing and ceiling joists, with the hood installed through an outside wall and 3' (914 mm) below the termination. Ducting may also be run downward through floor joists and under the home to a ventilated crawlspace not considered part of the living area of the home.