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INSTALLATION
UNIT INSTALLATION
WITH HORIZONTAL
TERMINATION
4" X 6-5/8"
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 fi restop 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
4" x 6-5/8" and 5" x 8" rigid vent terminations -
for use with a fi restop or wall thimble.
Recommended Framed Opening
Size
Vent Size
Framing Size
4" x 6 - 5/8"
10" x 10"
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 cov-
ered 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 fi replace 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 fl ue collar of the termination
and slipping the inner fl ex liner over it at least
1-3/8" (35mm). Fasten with the 3 screws (drill-
ing pilot holes will make this easier). Apply Mill
Pac or high temperature silicone to the outer
fl ex pipe and slip it over the outer fl ue collar of
the vent terminal at least 1-3/8"(35mm) and
fasten with the 3 screws.
32
NOTE:
Horizontal sections must be supported
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
assembly through the thimble making sure the
termination cap faces up (there are markings
on the cap that show which wayis 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 fl ex liner out
enough to slip over the fl ue collars of the
fi replace. (You may wish to cut the liner shorter
to make it more workable.) Do not bend liner
o
more than 90
. The liners must slip over the
collars a minimum of 1-3/8".
7) Apply Mill Pac over the fi replace inner fl ue
collar and slip the inner fl ex liner down over it
and attach with 3 supplied screws.
8) Do the same with the outer fl ue collar and outer
fl ex 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.
ASTROCAP
DIMENSIONS (946-523/P)
11"
(294mm)
11"
(294mm)
HZ42E Regency Horizon™ Gas Fireplace
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