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).

‡,f wall thickness is less than 4-3/8 the e[isting heat shields must be field trimmed. ,f wall thickness is greater than 7-5/8 in. a '9P-HSM-B will be reTuired.

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.

Non-Combustible Wall Penetration

3 in. (76 mm) top clearance

1 in. (25 mm) clearance around vertical sections

(SLP Pipe Shown)

 

Heat

3 in. (76 mm)

Shield

top clearance *

 

Heat

 

Shield

 

1 in. (25 mm)

Wall

clearance

Shield

bottom & sides

Firestop

 

WALL

 

If the hole being penetrated is surrounded by noncom- bustible materials such as concrete, a hole with diameter one in. 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

OTHER MATERIAL

* When using SLP pipe, minimum clearances from the vent pipe to combustible materi-

als 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 Materials

10 in.

A

10 in.

B

A*

B

48-1/16 in.

47-1/16 in.

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

Figure 8.2 Wall Penetration

Heatilator • RAVE4013I-C2293-900 Rev. C • 8/12

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Heatiator Rave4013i-c owner manual Vent Clearances and Framing, Pipe Clearances to Combustibles, Wall Penetration Framing

Rave4013i-c specifications

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