DuraVent PolyPro - Manual (Page 8)

8
Multi-Story: Consult local building or other
applicable codes for requirements in your
area. In the U.S., NFPA 211 10.6.3 (2013)
states: “Vents that pass through the floors
of buildings requiring the protection of
vertical openings shall be enclosed within an
approved enclosure. The enclosure walls shall
have a fire resistance rating of not less than
1 hour where a vent is located in a building
less than four stories in height. The enclosure
walls shall have a fire resistance rating of not
less than 2 hours where a vent is located in a
building four or more stories in height."
If the vent system is not exposed to wind or
lateral load within the enclosure and joints
cannot buckle, wall straps are not required
provided upper and lower supports are
proper.
Figure 10
ALIGN TABS WITH
MOUNTS
GASKET
EXTERIOR
WALL PLATE
INTERIOR
WALL PLATE
Figure 11
REMOVE GASKET
INSERT BIRD GUARD
FIRESTOPS (Fig. 9)
1. Firestops are required at each ceiling/
floor penetration including an attic.
Firestops are not required at the roof
deck penetration.
2. Cut and/or frame hole. (Table 3)
3. Slide the two halves together and attach
to the ceiling.
FIRESTOP
FIRESTOP
FIRESTOP
ENCLOSURE
TERMINATIONS:
Horizontal Single Pipe (Fig.10)
1. Locate penetration in wall.
2. Cut or cut and frame hole. (Table 3)
3. Attach Inner Plate to wall.
4. Attach / seal Outer Plate to outside wall.
5. Line up keyway, slide black pipe (UV
Protected) or termination through
plates.
6. If termination is used, attach with
screws. Align tabs with pipe mounts.
Figure 9