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installation
Vertical Termination
Vertical Terminations - Vertical Flex Vent Kit (Part #946-772)
5" (127 mm) x 8" (203 mm) Venting - Vertical Flex Vent Kit for North America (Part
#946-772)
Vertical Flex Vent Kit includes:
• 20 ft. flex pipe (inner & outer)
with 10 spacers
• 3 wall straps
• Ceiling firestop
• Firestop spacer
• Brackets
• Flex to rigid adaptor
The roof flashing is not included with this kit and must
be purchased separately.
Vertical flex installations must conform to the limitations
set in the vertical venting charts.
You must choose 1 of the following:
Part #
58DVA-F6-0/12-6/12
58DVA-F12-7/12-12/12
1.
Maintain the 1-1/2" (38 mm) clearance (air space) to combustibles
when passing through ceilings, walls, floors, enclosures, attic
rafters or other nearby combustibles. Do not pack air spaces
with insulation. Check venting sections for the maximum vertical
rise of the venting system and the maximum horizontal offset
limitations.
Ensure that you maintain clearances around enclosures, walls,
below or above floors, floor joists, etc. Each appliance has different
clearance requirements (top,sides,bottom). See specific appliance
manual for details.
2.
Set the appliance in its desired position. Drop a plumb bob down
from the ceiling/floor joist to the position of the appliance flue exit
and mark the location where the vent will penetrate the ceiling.
Drill a small hole at this point. Next drop a plumb bob from the
roof to the hole previously drilled at the ceiling level and mark
the spot where the vent will penetrate the roof.
3.
Cut a hole in the roof centered on the small hole placed in the
roof in the previous steps. The hole should be a minimum of 11"
(279 mm). The hole may be round and or square.
4.
Slip the flashing under the shingles and line up flashing so it is
centered to the hole (shingles should overlap half of the flashing)
as per Diagram 1.
Diagram 1
5. A ceiling firestop/firestop spacer must be installed when passing
through each floor or ceiling level. To install the ceiling firestop/
firestop spacer in a flat ceiling or floor joist cut a 11" (279 mm)
square hole. Frame the hole as show in Diagram 2 and install the
ceiling firestop. Slide the top attic insulation spacer onto the top
of the attic insulation shield/firestop - See Diagram 2a. Secure
with 4 screws/nails. If more than one is required, these can be
purchased separately.
The ceiling firestop/firestop spacer may be cut down to
size if this shield is too high for the application.
11"
79
| City Series CV72E-12
64
920-385
• Roof support
• 36" rigid DuraVent pipe
• Storm collar
• High wind termination cap
• Hardware
Description
Roof Flashing
Roof Flashing
Diagram 1 - The upper half of
the flashing is installed under the
roofing material and not nailed
down until the chimney is installed.
This allows for small adjustments.
Ceiling firestop
Diagram 2
Roof support
Diagram 2a
6.
Determine the overall height of the chimney from the top of the
appliance to the underside of the vent. If required cut the flexible
inner and outer pipe to the desired length up to a maximum of
20 ft. (6.1 m).
7.
Put a bead of Mill-Pac around the 5" (127 mm) collar on the
appliance and slide the inner flex pipe over the inner collar of the
appliance and secure with a minimum of 3 screws.
8.
Install 5" (127 mm) spacers around 5" (127 mm) flex.
9.
Repeat Step 7 to install the outer pipe to the outer collar of the
appliance.
If an offset is necessary in the attic or floor joists it is
important to support the vent pipe every 3 feet (914 mm
)to avoid excessive stress and sagging of the vent pipe.
Wall straps are provided (3 in total) for this purpose. All
round/plumbers strapping may also be used if further
supports are required.
10. Attach the rigid pipe section to the adaptor by using MillPac on
the inner/ outer pipe. Use 3 screws to secure outer pipe.
11. Secure inner flex pipe to pipe adaptor using Mill-Pac over the
adaptor. Slide the inner pipe over the flex to rigid adaptor and
secure with 3 screws.
12. Repeat Step 11 to secure outer flex.
Page 1
Termination Cap
Storm Collar
Flashing
Firestop spacer to prevent
debris from falling into the
ceiling firestop
Ceiling firestop
Enclosure
Ceiling firestop
04.29.21
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