Heatilator • CNXT Series • 4000-011 Rev N • 11/05
37
Fire Risk
Do NOT obstruct air inlet or outlet grilles.
Do NOT modify grilles.
•
Modifying or covering grilles could cause
temperature rise and fi re hazard.
Finishing materials must not interfere with:
• Air fl ow through grilles or louvers.
• Operation of louvers or doors.
• Access for service.
WARNING
A. Mantel Projections
Figure 11.1 shows the minimum vertical and corresponding
maximum horizontal dimensions of appliance mantels or
other combustible projections above the top front edge of
the appliance.
B. Facing Material
Measured from top of
fireplace opening (in inches)
1 - 3
4 - 6
7 - 9
10- 12
9-1/2
12-1/2
15-1/2
18-1/2
34-1/2 in.
minimum
to ceiling
12 in. is the maximum
mantel projection allowed.
Figure 11.1 Clearances to Mantels or other Combustibles above
Appliance.
1 in. (25 mm) min.
to perpendicular wall
A
3-1/2 in. (89 mm) min.
from fireplace opening
to perpendicular wall
B
48 in.
(1219 mm)
max.
Mantel Leg or
Perpendicular Wall
Top of
Appliance
Drywall
A
B
Figure 11.2 Mantel Leg or Wall Projections
(Acceptable on both sides of opening.)
0 in.
0 in.
0 in.
Finish wall material may be
combustible - Top and Sides
High Temperature Sealant (300° F/149° C min.)
Top and Side Seal Joint
Figure 11.3 Noncombustible Facing Diagram
11
11
Finishing
Fire Risk
Finish all edges and fronts to clearances and
specifi cations listed in manual.
WARNING
• Metal appliance front may be covered with non-
combustible material only.
•
Do NOT overlap combustible materials onto appliance
front.
• Install combustible materials only up to specifi ed
clearances on top, front and sides.
• Seal joints between the fi nished wall and appliance
top and sides using only a 300° F minimum sealant.
Fire Risk
Explosion Risk
•
Facing and/or fi nishing materials must never
overhang into the glass opening.
• Overhanging materials may ignite.
•
May interfere with proper operation of glass
assembly.
WARNING
12 in. (305 mm) is the maximum
mantel projection allowed.
