Hearth & Home Technologies Aztec User Manual
Hearth & Home Technologies, Inc. • Bravo, Aztec • InD • 703-900 Rev. N • 8/06
17
A. Pipe Clearances to Combustibles
Vent Clearances and Framing
6
Combustible Wall Penetration
Frame a hole in a combustible wall for an interior wall
shield fi restop, (Figure 6.2) whenever a wall is penetrated.
Use same size framing materials as those used in the wall
construction. The wall shield fi restop maintains minimum
clearances and prevents cold air infi ltration.
shield fi restop, (Figure 6.2) whenever a wall is penetrated.
Use same size framing materials as those used in the wall
construction. The wall shield fi restop maintains minimum
clearances and prevents cold air infi ltration.
Non-Combustible Wall Penetration
If the hole being penetrated is surrounded by noncombus-
tible materials such as concrete, a hole with diameter one
inch greater than the pipe is acceptable.
tible materials such as concrete, a hole with diameter one
inch greater than the pipe is acceptable.
Fire Risk.
Explosion Risk.
Maintain vent clearance to combustibles as
specifi ed.
specifi ed.
WARNING
• Do not pack air space with insulation or
other materials.
Failure to keep insulation or other materials
away from vent pipe may cause fi re.
away from vent pipe may cause fi re.
B. Wall Penetration Framing
Figure 6.1 Pipe Clearances
1 in. CLEARANCE
AROUND VERTICAL
SECTIONS
3 in. TOP
CLEARANCE
1 in. SIDE AND
BOTTOM CLEARANCE
Figure 6.2 Exterior Wall Hole
A* B
77 in. 76 in.
* Shows center of vent framing hole for top venting. The
center of the hole is one (1) inch (25.4mm) above the
center of the horizontal vent pipe.
center of the horizontal vent pipe.
Figure 6.2 Horizontal Venting Clearances to
Combustible Materials
Combustible Materials
WALL
HEAT
SHIELD
HEAT
SHIELD
3 in. TOP
CLEAR ANCE
WALL
SHIELD
FIRESTOP
1 in. CLEAR ANCE
BOT TOM & SIDES
BOT TOM & SIDES
NOTE: Slope
not required.
not required.
B
A
10 in.
12 in.
Î