Vent Clearances And Framing; Pipe Clearances To Combustibles; Wall Penetration Framing - Heat & Glo Bravo Owner's Manual

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Vent Clearances and Framing

A. Pipe Clearances to Combustibles
WARNING
Fire Risk.
Explosion Risk.
Maintain vent clearance to combustibles as
specifi ed.
• 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.
1 in. CLEARANCE
AROUND VERTICAL
SECTIONS
Figure 6.1 Pipe Clearances
Note: Heat shields MUST overlap by a minimum of 1-1/2 in. (38 mm).
The heat shield is designed to be used on a wall 4 in. to 7-1/4 in. (102
mm to 184 mm) thick. If wall thickness is less than 4 in. (102 mm) the
existing heat shields must be fi eld trimmed. If wall thickness is greater than
7-1/4 in. (184 mm) a DVP-HSM-B will be required.
HEAT
SHIELD
FIRESTOP
Figure 6.2 Horizontal Venting Clearances to Combustible Materials
18
3 in. TOP
CLEARANCE
1 in. SIDE AND
BOTTOM CLEARANCE
3 in. TOP
CLEAR ANCE
HEAT
SHIELD
1 in. CLEAR ANCE
WALL
BOTTOM & SIDES
SHIELD
WALL
Heat & Glo • Bravo • 704-902 Rev. D • 5/08
B. Wall Penetration Framing
10 in.
12 in.
A
A*
87-3/4 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.
Figure 6.3 Exterior Wall Hole
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.
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.
Whenever a non-combustible wall is penetrated, the wall
shield fi restop is only required on one side and no heat
shield is necessary.
If your local inspector requires the wall shield fi restop on
both sides, then both wall shield fi restops must have a heat
shield attached to them.
B
B
86-3/4 in.