Vent Clearances And Framing; Pipe Clearances To Combustibles; Wall Penetration Framing - Heat & Glo 350TRSI-AUF 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).
• 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. (102 mm) the existing heat shields must be field
trimmed. If wall thickness is greater than 7-1/4 in. (184 mm) a DVP-HSM-B 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 in. (111 mm) the existing heat shields must be
field trimmed. If wall thickness is greater than 7-5/8 in. (194 mm) a DVP-HSM-B will
be required.
(DVP-SLP Pipe Shown)
Heat
Shield
3 in. (76 mm)
top clearance
1 in. (25 mm)
clearance around
vertical sections
Heat
Shield
* When using SLP pipe, minimum clearances from the vent pipe to combustible
materials at inside wall firestops are:
Figure 8.1 Horizontal Venting Clearances To Combustible
Materials
38
3 in. (76 mm)
top clearance *
Heat
Shield
1 in. (25 mm)
clearance
Wall
bottom & sides
Shield
Firestop
WALL
3 in. (76 mm)
top clearance *
Heat
Shield
1 in. (25 mm)
Wall
clearance
Shield
bottom & sides
Firestop
WALL
Top: 2-1/2 in. (64 mm)
Bottom: 1/2 in. (13 mm)
Sides: 1 in. (25 mm)
Heat & Glo • 350TRSI-AUF, 350TRSILP-AUF • 2089-980 Rev. R • 2/13
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.
• DVP pipe - A wall shield firestop is required on one side
only on interior walls. If your local inspector requires a
wall shield firestop on both sides, then both wall shield
firestops must have a heat shield (refer to Section
16.B.) attached to them.
• SLP pipe - A wall shield firestop 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.H. 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 firestop is only required on one side and no heat
shield is necessary.
Note: A 152 mm section of straight flue must
be attached to the fireplace before a 90° elbow.
10 in.
10 in.
254 mm
254 mm
10 in.
12 in.
254 mm
305 mm
A*
B*
in. 39-3/4
350TRSI-AUF
350TRSILP-AUF
mm
* Shows center of vent framing hole for top or rear venting. The center of the
hole is one 25.4 mm above the center of the horizontal vent pipe.
Figure 8.2 Wall Penetration
C
D
A* B* C D
22-3/8 38-3/4 21-3/8
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