Vent Clearances and Framing | Quadra-Fire QFP44 guide

8Vent Clearances and Framing

A. Pipe Clearances to Combustibles

WARNING! Risk of Fire! Maintain air space clearance to vent. DO NOT pack insulation or other combustibles:

•Between ceiling restops

•Between wall shield restops

•Around vent system

Failure to keep insulation or other material away from vent pipe may cause over heating and re.

3 in.
(76 mm)		Air space clearance to
Drywall		bottom and sides of
Drywall		horizontal pipe must be
		at least 1 in. (25 mm)
1 in. (25 mm)
minimum
2 x 4 or		No combustible
2 x 6		framing to be
header		located within
		shaded area.
	WALL	1-1/2 in. (13 mm)
		minimum to
		perpendicular
		perpendicular
		wall.

B. Wall Penetration Framing

Combustible Wall Penetration

Whenever a combustible wall is penetrated, you must frame a hole for the wall shield restop(s). The wall shield restop maintains minimum clearances and prevents cold air in ltration.

•The opening must be framed on all four sides using the same size framing materials as those used in the wall construction.

•A wall shield restop is required on one side only on interior walls. If your local inspector requires a wall shield restop on both sides, then both wall shield restops must have a heat shield attached to them.

•See Section 10.I. for information for regarding the installation of a horizontal termination cap.

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 restop is only required on one side and no heat shield is necessary.

Figure 8.1 Horizontal Venting Clearances To Combustible Materi- als

12in.

(305 mm)

The center of the framing hole is

1 in. [25 mm] above the center of the horizontal vent pipe.

Framing should be constructed of 2 X 4 lumber or heavier.

10 in.

(254 mm)

Vent framing hole.

* Center of pipe

102-1/2 in.

(2604 mm)*

Figure 8.2 Wall Penetration

34	Quadra-Fire • QFP44 • 4051-300 Rev M • 09/08

QFP44 specifications

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