Heat & Glo LifeStyle XLR-N-AU manual Vent Clearances and Framing, Pipe Clearances to Combustibles

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. (111 mm) to 7-1/2 in. (194 mm) thick.

•If wall thickness is less than 4-3/8 in. (111 mm) the existing heat shields must be field trimmed. If wall thickness is greater than 7-1/2 in. (194 mm) 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 firestop(s). The 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.
• SLP pipe - 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.K. for information for regarding the in-
	stallation of a horizontal termination cap.

3 in. (76 mm) top clearance

1 in. (25 mm) clearance around vertical sections

Heat	2-1/2 in. (64 mm)
Shield	top clearance
	Heat
	Shield
1 in.	1/2 in. (13 mm)
(25 mm)
bottom	clearance
clearance	bottom & sides
Wall
Shield
Firestop WALL

Non-Combustible Wall Penetration

If the hole being penetrated is surrounded by noncom- bustible materials such as concrete, a hole with diameter 10 in. (254 mm) 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.

Figure 8.1 Horizontal Venting Clearances To Combustible Materials

DO NOT PACK WITH

INSULATION OR

OTHER MATERIAL

	10 in.
10 in.	(254 mm)

(254 mm)

B

A

A*	B
4 ft. (1220 mm)	4 ft. (1200 mm)

*Shows center of vent framing hole for top venting. The center of the hole is one 10 in. (254 mm) above the center of the horizontal vent pipe.

Figure 8.2 Wall Penetration

Heat & Glo • XLR-N-AU, XLR-PB-AU • 2198-906 Rev. M • 5/12 31