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Unit Installation with
Horizontal Termination 5"
x 8" Venting (Flex Vent
Systems)
Minimum Vent Clearances to
Combustibles
* Clearances noted below must be maintained;
except when passing through a wall, ceiling or at
the termination where the use of a firestop or wall
thimble reduces clearance to 1-1/2" (38mm).
Horizontal Top
3" (76mm)
Horizontal Side
2 " (51mm)
Horizontal Bottom
2" (51mm)
Vertical Vent
2" (51mm)
Below are the recommended framing dimensions
(inside measurements) for the 5" x 8" rigid vent
terminations - for use with a firestop or wall
thimble.
Recommended Framed
Opening Size
Vent Size
Framing Size
5" x 8"
11" x 11"
1. Locate the unit in the framing, rough in the gas
(preferably on the right side of the unit). Locate
the centerline of the termination and mark wall
accordingly. Cut an square hole in the wall - see
chart (inside dimension).
Note: If installing termination on a sid-
ing covered wall, a vinyl siding
standoff or vinyl furring strips
must be used to ensure that the
termination is not recessed into
the siding.
i d e W
O u t s
Furring
Strips
2. Level the fireplace and fasten it to the framing
using nails or screws through the nailing strips.
3. Assemble the vent assembly by applying Mill-Pac
to the inner flue collar of the termination and
slipping the inner flex liner over it at least 1-3/8"
e x t é
(35mm). Fasten with the 3 screws (drilling pilot
M u r
holes will make this easier). Apply Mill-Pac to
the outer flex pipe and slip it over the outer flue
collar of the vent terminal at least 1-3/8"(35mm)
Fourrures en bois
and fasten with the 3 screws.
NOTE: Horizontal sections must be sup-
4. Separate the 2 halves of the wall thimble and
securely fasten the one with the tabs to the
outside wall making sure that the tabs are
on top and bottom. Fasten the other thimble
half to the inside wall. The thimble halves slip
inside each other and can be adjusted for 2
x 4 or 2 x 6 walls.
5. Slip the assembled liner and termination as-
sembly through the thimble making sure the
termination cap faces up (there are markings
on the cap that show which way is up). This
will position the termination cap with proper
down slope for draining water. Fasten the cap
to the outer wall with the 4 supplied screws.
6. Pull the centre inner and outer flex liner out
enough to slip over the flue collars of the
fireplace. (You may wish to cut the liner
shorter to make it more workable.) Do not
bend liner more than 90º. The liners must
slip over the collars a minimum of 1-3/8".
7. Apply Mill-Pac over the fireplace inner flue
collar and slip the inner flex liner down over
it and attach with 3 supplied screws.
8. Do the same with the outer flue collar and
outer flex liner.
9. Apply a bead of silicone between the thimble
and termination and around the outer edge
of the terminal at the wall in order to keep
the water out.
IMPORTANT: Do not locate termination
hood where excessive snow or ice
buildup may occur. Be sure to check
vent termination area after snow
falls, and clear to prevent accidental
blockage of venting system. When
using snow blowers, make sure snow is
a l l
not directed towards vent termination
Furstrp.eps
area.
see also c34020a.eps
r i e u r
furstrpf.eps
french
ported at intervals not exceeding 3
feet (0.9 meter). (Flame picture and
performance will be affected by sags
in the liner).
5" dia. flue pipe
with spring spacer
8" dia.
air intake
Wall Thimble
Screws
Diagram 57
ASTROCAP XL
DIMENSIONS (946-623/P)
11"
(279mm)
Diagram 1
Diagram 58
2" x 4" or 2" x 6"
AstroCap XL
Termination Cap
Screws
Vinyl Siding
City Series CV60E-1 |
installation
11"
(279mm)
center
of hole
53
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