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City Series CV72E

installation

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 siding

covered wall, a vinyl siding standoff
or vinyl furring strips must be used
to ensure that the termination is not
recessed into the siding.

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"
(35mm). Fasten with the 3 screws (drilling pilot
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)
and fasten with the 3 screws.

Outside

Wall

Mur extérieur

Furring

Strips

Fourrures en bois

Furstrp.eps

see also c34020a.eps

furstrpf.eps

french

AstroCap XL

Termination Cap

2” x 4” or 2” x 6”

8" dia.

air intake

5” dia. flue pipe
with spring spacer

Screws

Wall Thimble

Vinyl Siding

ASTROCAP XL
DIMENSIONS (946-623/P)

Horizontal Top

3" (76mm)

Horizontal Side

2 " (51mm)

Horizontal Bottom

2" (51mm)

Vertical Vent

2" (51mm)

Minimum Vent Clearances to

Combustibles

Horizontal Termination 5" x 8"
Venting (Flex Vent Systems)

NOTE: Horizontal sections must be sup-

ported at intervals not exceeding 3
feet (0.9 meter). (Flame picture and
performance will be affected by sags
in the liner).

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 fire-
place. (You may wish to cut the liner shorter
to make it more workable.) Do not bend liner
more than 90

. 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 not directed towards vent termination
area.

* 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).

Recommended Framed

Opening Size

Vent Size

Framing Size

5" x 8"

11" x 11"

Below are the recommended framing dimensions
(inside measurements) for the 5" x 8" rigid
vent terminations - for use with a firestop or wall
thimble.

Diagram 1

Diagram 3

55-1/4

”(1403 mm)

center