Lennox Hearth LSO-43 Fireplace Specifications, Front View, Side View Left, Top View, ¹⁄₂ 38mm

Note: Safety strips are not required when fire- place rests on a noncombustible surface.

Note: Install the hearth extension only as illus- trated (see Figures 41 and 42 ).

FIREPLACE SPECIFICATIONS

51 ¹⁄₈"

(1299mm)

The safety strips should extend from front of the fireplace at least 1 ¹⁄₂" and should extend to be at least flush with the sides. In the event a wooden support is used to elevate the fireplace above the floor, a “Z” type safety strip should be fabricated and used to protect the front surface of the wood support as well as the floor beneath the hearth extension (Figures 7 and 8 ). The safety strips should be tacked down to prevent possible movement.

Note: The “Z” type safety strip is not supplied.

6¹⁵⁄₁₆" (176mm)

24¹⁄₁₆"

(611mm)

8 ⁵⁄₈"

(219mm)

4 ³⁄₁₆" (106mm)

42 ³⁄₄" (1086mm)

52 ¹⁄₄" (1327mm)

Front View

¹⁄₂"

(13mm)

39 ¹¹⁄₁₆"

(1008mm)

4¹⁄₂"

114mm)

1⁹⁄₁₆"

(40mm)

6

1¹⁄₂"

(38mm)

Metal Safety Strips with ¹⁄₂" (13mm) Min. Overlap

Figure 7

Blocking

Special “Z” Metal Safety

2"Strips with ¹⁄₂" (13mm) Min.

(51mm) Overlap

Figure 8

Step 3. Refer to fireplace drawings and speci- fications on pages 6 and 7 for framing dimen- sions and details. Frame appliance enclosure as illustrated in Figures 10 through 13 on page 7.

IMPORTANT: UNDER NO CIRCUMSTANCES CAN THE FIREPLACE TOP SPACERS (FIGURE 9 ) BE REMOVED OR MODIFIED, NOR MAY YOU NOTCH THE HEADER TO FIT AROUND OR BE INSTALLED LOWER THAN THE SPAC- ERS. THE HEADER MAY BE IN DIRECT CON- TACT WITH THE TOP SPACERS BUT MAY NOT BE SUPPORTED BY THEM.

25 ¹⁄₈"

¹⁄₂" (638mm) (13mm)

9¹⁵⁄₁₆"

(252mm)	44 ⁵⁄₈"
	(1133mm)
39 ¹¹⁄₁₆"	49 ⁵⁄₈"
(1008mm)
	(1260mm)
11"	12 ⁷⁄₁₆"
	(316mm)
(279mm)	5 ¹⁄₁₆"
	(129mm)

1 ⁹⁄₁₆"	11 ⁵⁄₁₆"
(40mm)	(287mm)
	Side View (Left)
		31" (788mm)

1 ¹⁄₄"

(32mm)

9 ³⁄₄"

(248mm)Drain 11 ⁵⁄₁₆"

Plug (287mm)

¹⁄₂" (13mm)

Top View

Figure 9

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.