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Heat & Glo • SL-550 / 750 / 950TR-D • InD • 2044-985 Rev. M • 10/0624
Combustible Wall Penetration
Frame a hole in a combustible wall for an interior wall
shield fi restop, (Figure 6.2) whenever a wall is penetrated.
Use same size framing materials as those used in the wall
construction. The wall shield fi restop maintains minimum
clearances and prevents cold air infi ltration.
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.
B. Wall Penetration Framing
Figure 6.3 Exterior Wall Hole
* Shows center of vent framing hole for top or rear venting.
The center of the hole is one (1) inch (25.4 mm) above the
center of the horizontal vent pipe.
WALL
HEAT
SHIELD
HEAT
SHIELD
3in.TOP
CLEARANCE
WALL
SHIELD
FIRESTOP
1in.CLEARANCE
BOTTOM & SIDES
7in.
A
B
C
D
*
*
A. Pipe Clearances to Combustibles
Vent Clearances and Framing
6
Fire Risk.
Explosion Risk.
Maintain vent clearance to combustibles as
specifi ed.
• Do not pack air space with insulation or other
materials.
Failure to keep insulation or other materials
away from vent pipe may cause fi re.
Figure 6.1 Pipe Clearances
1 in. CLEARANCE
A
ROUND VERTICAL
SECTIONS
3 in. TOP
CLEARANCE
1 in. SIDE AND
BOTTOM CLEARANCE
NOTE: Slope
not required.
WARNING
Figure 6.2 Horizontal Venting Clearances to Combustible Materials
ABCD
SL-550TR-D
in. 36 1/2 24 3/8 35 1/2 23 3/8
mm 927 619 902 594
SL-750TR-D
in. 41 27 7/8 40 26 7/8
mm 1041 708 1016 683
SL-950TR-D
in. 44 31 7/8 43 30 7/8
mm 1118 810 1092 784
Note: Heat shields MUST overlap by a minimum of 1-1/2 in. (38 mm).
The heat shield is 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 fi eld trimmed. If wall thickness is greater than
7-1/4 in. (184 mm) a DVP-HSM-B will be required.