way around and spray the outside surface with talcum
powder or soap solution to reduce friction.
– Push the flue duct assembly into the air duct until the
external swaged ring on the flue terminal stops against
the internal swage on the air duct (fig. 12).
– From inside the building slide the duct assembly into the
wall liner until the sealing ring passes completely through
the wall, then pull the air duct back until the ring is pulled
up to the wall surface.
– Procede to section 3.6.3.
3.6.2 Installations from outside the building only
(Hole diameter 100 mm - 4in)
– Push the flue duct assembly into the air duct until the
external swaged ring on the flue terminal stops against
the internal swage on the air duct (fig. 12).
– From inside or outside the building, slide the duct assem-
bly into the wall until the sealing ring forms a good seal
against the outside wall.
– Fit the rubber sealing ring into the swaged groove in the air
duct as shown in fig. 13. Ensure that it is the correct way
around.
3.6.3 Connecting the duct assembly - All installations
– With reference to fig. 13, slide on the aluminium reten-
tion ring (D), check that the rubber sealing ring (E) is
pulled up to the wall and that the duct assembly is hori-
zontal, then secure the aluminium retention ring to the
air duct using the two screws (H) provided. Do not over-
tighten the screws.
– Push the junction collar (B) over the air duct until the air
duct touches the inner part of the collar where the diame-
ter becomes smaller.
– Push the elbow socket into the junction collar and onto the
flue duct.
– Fit the protective metal collar (I) over the junction collar.
– Remove the six fixing screws securing the sealed chamber
front panel then remove the panel.
– Place the gasket (G) under the flange of the elbow and fit
the elbow onto the top of the appliance, taking care to
ensure that the silicon seal on the fan outlet correctly
engages and forms a seal at its joint with the elbow. This
must be checked from inside the sealed chamber.
– Secure the elbow onto the top of the appliance using the
four screws and washers provided, and refit the sealed
chamber front panel.
3.7
SEPARATE DUCTS
(Optional alternative twin pipe system)
When installing the separate ducts, comply with the require-
ments of the current standards, as well as the following prac-
tical pointers:
– The temperature on the surface of the discharge pipe, in
the portions that pass through masonry and/or come into
contact with walls should not exceed room temperature by
more than 60°C (pr EN 483).
– With direct intake from outside, when the pipe is longer
than 1 m, you are recommended to insulate the piping so
as to prevent formation of dew on the outside of the piping
during particularly cold periods of the year.
– With the outlet pipe outside the building or in cold indoor envi-
ronments, insulation is necessary to prevent burner ignition
failure. In such cases, provide for condensate drainage.
The maximum overall length of the intake and exhaust
ducts depends on the head losses of the single fittings
installed (excluding the adaptors) and must not be greater
than 9.00 mm H
2
O (“Super 90 Mk.II”) - 11.00 mm H
2
O
(“Super 105 Mk.II”).
For head losses in the fittings, refer to
Table 8
.
11
KEY
A
Elbow flange
B
Junction collar
C
Outer duct
D
Aluminium ring
E
Rubber sealing ring
F
Inner duct c/w terminal
G
Gasket ø 95/125 x 2
H
Fixing screw
I
Protective metal collar
J
Inner “O” ring
Z
Fig. 13/a
TABLE 8
Accessories ø 80
Head loss (mm H
2
O)
“Super 90 Mk.II”
“Super 105 Mk.II”
Inlet
Outlet
Roof outlet
Inlet
Outlet
Roof outlet
90° elbow MF
0,30
0,40
–
0,30
0,50
–
45° elbow MF
0,20
0,30
–
0,20
0,40
–
Extension L. 1000 (horizontal)
0,20
0,30
–
0,20
0,40
–
Extension L. 1000 (vertical)
0,10
0,20
–
0,10
0,30
–
Outlet terminal
–
0,30
–
–
0,40
–
Intake terminal
0,10
–
–
0,10
–
–
Doubler fitting
0,50
1,50
–
0,50
1,80
–
Roof outlet terminal L.1240
–
–
0,50
–
–
0,60
Tee condensation outlet
–
0,90
–
–
1,10
–