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UNIT INSTALLATION WITH
HORIZONTAL TERMINATION
102MM X 175MM FLUEING
(Flex Flue Systems)
Minimum Flue 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 25mm.
Horizontal Top*
76mm*
Horizontal Side
51mm
Horizontal Bottom
51mm
Vertical Vent
51mm
Recommended Framed Opening Size
Flue Size
Framing Size
102mm x 175mm
254mm x 254mm
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).
2) Level the fireplace and fasten it to the framing
using nails or screws through the nailing strips.
3) Assemble the flue assembly by applying Mill
Pac to the inner flue collar of the termination
and slipping the inner flex liner over it at least
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 35mm and
fasten with the 3 screws.
NOTE: Horizontal sections must be supported
at intervals not exceeding 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 51mmx102mm
or 51mmx152mm.
Regency GF900L-1 Gas Fireplace
5) Slip the assembled liner and termination
assembly through the thimble making sure the
termination cap faces up (there are markings
on the cap indicating 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 90
. The liners must slip over the
o
collars a minimum of 35mm.
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 Mill-Pac 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.
102mm dia. flue pipe
Screws
with spring spacer
(3 per
connection)
ASTROCAP
DIMENSIONS (946-523/P)
51mm x 102mm or 51mm 152mm timber
Termination
173mm
dia. air intake
connection)
Wall Thimble 2 pieces
254mm
(Outer Diameter)
installation
(279mm)
(279mm)
of hole
C L
C L
Cap
Screws
(4 per
27
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