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 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 in. (111 mm) the existing heat shields must be field trimmed. If wall thickness is greater than 7-5/8 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)

clearance

bottom

bottom & sides

clearance

 

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.

DO NOT PACK WITH

INSULATION OR

Figure 8.1 Horizontal Venting Clearances To Combustible Materials

OTHER MATERIAL

10 in.

10 in.

(254 mm)

(254 mm)

B

A

A*

B

48 in.

47-1/4 in

(1220 mm)

(1200 mm)

*Shows center of vent framing hole for top venting. The center of the hole is 1 in. (25 mm) above the center of the horizontal vent pipe.

Figure 8.2 Wall Penetration

Heat & Glo • XLR-PLUS-N-AU, XLR-PLUS-PB-AU2264-900 Rev. M • 7/12

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

XLR-PLUS-N-AU, XLR-PLUS-PB-AU specifications

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