Hearth and Home Technologies CASTLEWOOD 42 - Manual (Page 10)

Outdoor Lifestyles by Hearth & Home Technologies Inc. • 4070-300 Rev D • 11/11 10
C. Sidewalls/Surrounds
• Locate adjacent combustible sidewalls a minimum of 24 in. (610 mm) from fireplace opening.
• Mantle leg, surround, stub wall, whether combustible or non-combustible, may be constructed as shown in Figure 3.4.
D. Frame the Fireplace
Figure 3.4 shows typical framing using combustible materials (2x4 lumber shown). Cooling air hoods required If total struc-
ture is non-combustible, cooling air hoods are not necessary.
• Observe all required air space clearances to combustible materials as shown in Figure 3.5.
18 1/2 in.
[470 mm]
19 3/4 in.
[500 mm]
4 in.
[102 mm]
50° angle
39° angle
24 in.
[610 mm]
BRICK
FRONT
FLUSH
FRONT
24 in.
[610 mm]
22 3/8 in.
[568 mm]
52-7/8 in.
(1343 mm)
42 in.
[1067 mm]
Note: Grid depicts 1 inch squares.
Figure 3.4 Mantel Leg, Surround or Wall Projection (acceptable on both sides of opening)
Figure 3.5 Framing the Fireplace
2 in./51 mm
minimum air
space clearance
to the enclosure.
28-3/8 in.
721 cm
74- 1/2 in.
1892 cm
Metal framing stud to provide support and backing for
wall material and mantel.
area to be covered with nonccombus-
tible material.
A
53-7/8 in.
1368 cm