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Hilti Firestop Systems
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F2. Attachment Clip* — (Not shown) At each corner of the Z frame enclosure the butting pieces of Z-frame shall be secured with two CP 643N
attachment clips, one centered at mid-depth of Z-frame, and one located at end of Z-frame furthest from the floor or wall assembly. Each leg
of clip is attached to the Z-frame with a min 3/4 in. long steel screw and 3/4 in. diam. steel washer.
HILTI CONSTRUCTION CHEMICALS, DIV OF HILTI INC — CP 643N attachment clips
G1. Cover Plate — (Not shown) A min 24 ga sheet steel cover secured to the 1 in. (25 mm) legs of Z-frame to close off the bottom of the
enclosure. Cover plate to be two pieces with a 1 in. (25 mm) overlap at the seam. For pipes 12 in. or smaller, cover plate secured with min
three 3/4 in. (19 mm) long sheet metal screws equally spaced at each side, with a fastener at each corner and at each seam, For pipes
greater than 12 in, cover plate secured with min five 3/4 in. (19 mm) long sheet metal screws and min 3/4 in. (19 mm) diam steel washers
equally spaced at each side, with a fastener at each corner and at each seam. Cover plate sized to the OD of the Z-frame enclosure and to
within 1/4 in. (6 mm) of the penetrant contour.
G2. Composite Sheet* — (Not shown) As an alternate to the cover plate (Item 3G1), cover plate may consist of Hilti CFS-COS Firestop
Composite Sheet. Composite sheet cover plate secured to the 1 in. (25 mm) legs of Z-frame to close off the bottom of the enclosure. Cover
plate to be two pieces with a 1 in. (25 mm) overlap at the seam. Cover plate secured with min five 3/4 in. (19 mm) long sheet metal screws
and min 3/4 in. (19 mm) diam steel washers equally spaced at each side, with a fastener at each corner and at each seam, Cover plate sized
to the OD of the Z-frame enclosure and to within 1/4 in. (6 mm) of the penetrant contour.
HILTI CONSTRUCTION CHEMICALS, DIV OF HILTI INC — Hilti CFS-COS Firestop Composite Sheet
* Indicates such products shall bear the UL or cUL Certification Mark for jurisdictions employing the UL or cUL Certification (such as Canada),
respectively.
CAJ2836
Reproduced by HILTI, Inc. Courtesy of
Underwriters Laboratories, Inc.
February 14, 2019
CANADA ONLY
System No. C-AJ-2836