Vent Clearances And Framing; Pipe Clearances To Combustibles; Wall Penetration Framing - Heatilator ADVT3428 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. an extended heat shield will be required.
• 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).
• 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. an extended heat shield will be required.
(SLP Pipe Shown)
Heat
Shield
3 in. (76 mm)
top clearance
1 in. (25 mm)
clearance around
vertical sections
(DVP Pipe Shown)
Heat
Shield
Figure 8.1 Horizontal Venting Clearances To Combustible Materi-
als
34
2-1/2 in. (38 mm) top clearance
where it passes through a wall
Heat
Shield
1 in. (25 mm) side clearance
1/2 in. (13 mm) bottom clearance
Wall
where it passes through a wall
Shield
Firestop
WALL
3 in. (76 mm)
top clearance
Heat
Shield
1 in. (25 mm)
Wall
clearance
Shield
bottom & sides
Firestop
WALL
Heatilator • AVEO Series DV • 4058-210 Rev F • 10/08
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.
• 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 attached to them.
• See Section 10.M. for information for regarding the
installation of a horizontal termination cap.
Non-Combustible Wall Penetration
If the hole being penetrated is surrounded by noncombus-
tible 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.
10 in.
12 in.
* Measures to center of hole
which is 1 in. (25.4 m) above
the center of the horizontal
vent pipe.
A - ADVR2438
23 3/8 in. (594 mm)
Figure 8.2 Wall Penetration
B*
A*
B - ADVT3428
36-5/8 in. (930 mm)