Hearth and Home Technologies EDV3633IL Vent Clearances and Framing, Wall Penetration Framing

8 Vent 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 firestops

•Between wall shield firestops

•Around vent system

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

Note: Heat shields MUST overlap by a minimum of 1 1/2 in. (38 mm).

•SLP heat shield - designed to be used on a wall 4-3/8 in. to 7-5/8 in. (111 mm to 194 mm thick).

•If wall thickness is less than 4-3/8 the existing heat shields must be field trimmed. If wall thickness is greater than 7-5/8 in. an extended heat shield will be required.

B. Wall Penetration Framing

Combustible Wall Penetration

Whenever a combustible wall is penetrated, you must frame a hole for the wall shield firestops. A wall shield firestop maintains minimum clearances and prevents cold air infiltration.

•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 firestop must be placed on each side of an interior wall. A minimum 1 1/2 in. (38 mm) overlap of attached heat shields must be maintained.

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

Non-Combustible Wall Penetration

3 in.

(76 mm)

Drywall

1 in. (25 mm)

2 x 4 or

Air space clearance to bottom and sides of horizontal pipe must be at least 1 in. (25 mm)

No combustible framing to be

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

2 x 6 header

WALL

located within shaded area.

3/4 in. (19 mm) minimum to perpendicular wall.

10 in. [254mm]

10in.

[254mm]

Vent

framing

hole

*When using SLP pipe, minimum clearances from the vent pipe to combustible materials at inside wall firestops are:

Top: 2-1/2 in. (64 mm)

Bottom: 1/2 in. (13 mm)

Sides: 1 in. (25 mm)

Figure 8.1 Horizontal Venting Clearances To Combustible Materi- als

The center of the framing hole is

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

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

36 1/2 in. [927 mm]

(Center of pipe)

Figure 8.2 Wall Penetration

30 Heatilator • Eclipse • 4049-229 Rev F • 11/08