Vent Clearances And Framing; Pipe Clearances To Combustibles; Wall Penetration Framing - Heat & Glo Heat&Glo Escape-42DV Owner's Manual

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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 fi restops
• Between wall shield fi restops
• Around vent system
Failure to keep insulation or other material away from
vent pipe may cause over heating and fi re.
Note: Heat shields MUST overlap by a minimum of 1-1/2 in. (38 mm).
• DVP heat shield - designed to be used on a wall 4 in. to 7-1/4 in. (102 mm to
184 mm) thick.
• If wall thickness is less than 4 in. the existing heat shields must be field trimmed.
If wall thickness is greater than 7-1/4 in. a DVP-HSM-B will be required.
Heat
Shield
3 in. (76 mm)
top clearance
1 in. (25 mm)
clearance around
vertical sections
Figure 8.1 Horizontal Venting Clearances To Combustible
Materials
3 in. (76 mm)
top clearance
Heat
Shield
1 in. (25 mm)
clearance
Wall
bottom & sides
Shield
Firestop
WALL
Heat & Glo • Escape-42DV • 2052-900 Rev. X • 3/11
B. Wall Penetration Framing
Combustible Wall Penetration
Whenever a combustible wall is penetrated, you must
frame a hole for the wall shield fi restop(s). The wall shield
fi restop maintains minimum clearances and prevents cold
air infi ltration.
• The opening must be framed on all four sides using the
same size framing materials as those used in the wall
construction.
• A wall shield fi restop is required on one side only on in-
terior walls. If your local inspector requires a wall shield
fi restop on both sides, then both wall shield fi restops
must have a heat shield (refer to Section 16.B.) at-
tached to them.
• See Section 10.M. 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 fi restop is only required on one side and no heat
shield is necessary.
10 in.
12 in.
A
A*
73 -1/8 in.
* Shows center of vent framing hole for top venting. The center of the hole is
one (1) inch (25.4 mm) above the center of the horizontal vent pipe.
Figure 8.2 Exterior Wall Hole
B
B
72 -1/8 in.
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