Vent Clearances And Framing; Pipe Clearances To Combustibles; Wall Penetration Framing - Heat & Glo XLR-N-AU Owner's Manual

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.
Heat
Shield
3 in. (76 mm)
top clearance
1 in. (25 mm)
clearance around
vertical sections
1 in.
(25 mm)
bottom
clearance
Figure 8.1 Horizontal Venting Clearances To Combustible
Materials
2-1/2 in. (64 mm)
top clearance
Heat
Shield
1/2 in. (13 mm)
clearance
bottom & sides
Wall
Shield
Firestop
WALL
Heat & Glo • XLR-N-AU, XLR-PB-AU • 2198-906 Rev. M • 5/12
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
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
OTHER MATERIAL
10 in.
(254 mm)
10 in.
(254 mm)
A
A*
4 ft. (1220 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
B
B
4 ft. (1200 mm)
31