Sidewalls/Surrounds; Frame The Fireplace - Heat & Glo RH-36 Series Owner's Manual

C. Sidewalls/Surrounds
• Adjacent combustible sidewalls must be located a minimum of 12 in. (305 mm) from the fireplace opening.
• Combustible and non-combustible mantel legs, surrounds and stub walls may be constructed within the gridded area,
Figure 6.3.
FLUSH
FRONT
11 1/4 in.
[286 mm]
[305 mm]
Figure 6.3 Mantel Leg or Wall Projections (Acceptable on both sides of opening)
D. Frame the Fireplace
Figure 6.4 shows typical framing using combustible materials (2x4 lumber shown).
• Observe all required air space clearances to combustible materials as shown in Figure 6.1 & 6.2.
• Framing across the top of fireplace must be above top standoffs.
2 in. (51 mm)
min. air space
clearance
from chimney.
C
B
Figure 6.4 Framing the Fireplace
20
A
B
12 in.
A
Heat & Glo • RH-36/RH-42 • 4044-153 • Rev AC • 1/11
4 in.
BRICK
[102 mm]
FRONT
9 3/4 in.
[248 mm]
12 in.
Model #
[305 mm]
RH-36
RH-42
Header MUST NOT be notched!
D = extra space needed for outside air connection.
If outside air duct has no bend, this dimension may be
reduced as long as minimum clearances are met.
D
Model
in.
RH-36
mm
in.
RH-42
mm
* If interior of chase will be drywalled, add the thickness to
** Adjust header height for a raised floor under fireplace.
A
Fireplace Outside
Opening Dimensions
in.
36
mm
914
in.
42
mm 1067
A B* C**
42 21 1/2 39 3/4
1067 546 1010
48 21 1/2 39 3/4
1219 546 1010
B
41
1041
47
1194
D
8
203
8
203