Wall Penetration Framing/Firestops - Majestic QUARTZ Series Installation Manual

B. Wall Penetration Framing/Firestops
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.
These clearances are maintained by using an SLP-WS
(SLP pipe) or DVP-WS (DVP pipe). See Figure 5.2 for
framing instructions.
• For external walls: The wall shield firestop is included
with the termination cap assembly.
• For internal walls: A wall shield firestop must be pur-
chased and installed.
• 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 firestop 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 main-
tained.
• DVP pipe - A wall shield firestop is required on one
side only on interior walls. If your local inspector re-
quires a wall shield firestop on both sides, then both
wall shield firestops must have a heat shield (refer to
Section 12.A.) attached to them.
• See Section 7.F. for information for regarding the in-
stallation of a horizontal termination cap.
Non-Combustible Wall Penetration
If the hole being penetrated is surrounded by non-com-
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.
Majestic • QUARTZ32IFTN/L, QUARTZ36IFTN/L, QUARTZ42IFTN/L Installation Manual • 2641-980 Rev. C • 9/20
34
DO NOT PACK VENT FRAMING HOLE WITH INSULATION
OR OTHER MATERIAL.
10 in.
10 in.
10 in.
12 in.
A*
B*
Inches
QUARTZ32IFT
Millimeters
Inches
QUARTZ36IFT
Millimeters
Inches
QUARTZ42IFT
Millimeters
* 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.
Note: Center of the horizontal vent pipe to the vertical
measuring surface of a trap cap is 5 inches (127 mm)
Figure 5.2 Wall Penetration
C
D
A* B* C
37-7/16 24-3/8 36-7/16 23-3/8
951 619 926 594
41 27-7/8 40 26-7/8
1041 708 1016 683
43 29-7/8 42 28-7/8
1092 759 1067 733
D