Heat & Glo LifeStyle Escape-42DVLP Vent Clearances and Framing, B. 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).

•DVP heat shield - 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. the existing heat shields must be field trimmed. If wall thickness is greater than 7-1/4 in. a DVP-HSM-B 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 fi restop(s). The wall shield

firestop maintains minimum clearances and prevents cold air infi 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 fi restop is required on one side only on in-

terior walls. If your local inspector requires a wall shield

fi restop on both sides, then both wall shield fi restops

must have a heat shield (refer to Section 16.B.) at-

tached to them.

3 in. (76 mm) top clearance

1 in. (25 mm) clearance around vertical sections

Heat	3 in. (76 mm)
Shield	top clearance
	Heat
	Shield
	1 in. (25 mm)
Wall	clearance
Shield	bottom & sides
Firestop
	WALL

• See Section 10.M. for information for regarding the in-

stallation of a horizontal termination cap.

Non-Combustible Wall Penetration

If the hole being penetrated is surrounded by noncom- bustible 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.

Figure 8.1 Horizontal Venting Clearances To Combustible

Materials

10 in.

12 in.

B

A

A*	B
73 -1/8 in.	72 -1/8 in.

*Shows center of vent framing hole for top venting. The center of the hole is one (1) inch (25.4 mm) above the center of the horizontal vent pipe.

Figure 8.2 Exterior Wall Hole

Heat & Glo • Escape-42DV • 2052-900 Rev. Y • 11/11 29