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Heat & Glo • SOHO-N-AUB • 2197-980 Rev. F • 5/12
A. Pipe Clearances to Combustibles
WARNING! Risk of Fire! Maintain air space clearance to
vent. DO NOT pack insulation or other combustibles:
• Between ceiling restops
• Between wall shield restops
• Around vent system
Failure to keep insulation or other material away from
vent pipe may cause over heating and re.
8
Vent Clearances and Framing
Figure 8.2 Wall Penetration
Figure 8.1 Horizontal Venting Clearances To Combustible
Materials
B. Wall Penetration Framing
Combustible Wall Penetration
Whenever a combustible wall is penetrated, you must
frame a hole for the wall shield restop(s). The wall shield
restop maintains minimum clearances and prevents cold
air inltration.
• 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 restop must be placed on each
side of an interior wall. A minimum 1-1/2 inch (38 mm)
overlap of attached heat shields must be maintained.
• See Section 10.G 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 restop is only required on one side and no heat
shield is necessary.
A
B
10 in.
(254 mm)
10 in.
(254 mm)
* Shows center of ue framing hole. The center of the hole is 1 in. (25
mm) above the center of the horizontal ue pipe.
A* B
38 in (971 mm) 37-1/4 in. (946 mm)
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.
2-1/2 in. (64 mm)
top clearance
1/2 in. (13 mm)
clearance
bottom & sides
1 in.
(25 mm)
bottom
clearance
Heat
Shield
Wall
Shield
Firestop
Heat
Shield
WALL
3 in. (76 mm)
top clearance
1 in. (25 mm)
clearance around
vertical sections