Vent Clearances And Framing; Pipe Clearances To Combustibles; Wall Penetration Framing - Heat & Glo ESC-42ST 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.
• If wall thickness is less than 4-3/8 the existing heat shields must be field trimmed.
If wall thickness is greater than 7-5/8 in. a DVP-HSM-B will be required.
(DVP Pipe Shown)
1 in. (25 mm)
clearance around
vertical sections
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 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.
• SLP pipe - A wall shield fi restop 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.
3 in. (76 mm)
top clearance *
Heat
Heat
Shield
Shield
3 in. (76 mm)
top clearance
1 in. (25 mm)
1 in. (25 mm)
clearance
clearance
bottom & sides
bottom & sides
Wall
Shield
Firestop
WALL
Heat & Glo • ESC-42ST • 2146-900 Rev. Q • 4/13
• DVP pipe - A wall shield fi restop is required on one side
only on interior 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.)
attached to them.
• See Section 10.J. 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.
B
A*
DO NOT PACK WITH INSULATION
OR OTHER MATERIAL
A*
Inches 75
Millimeters 1905
* Shows center of vent framing hole for top or rear 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
A*
B
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