Technical data

12
Linea 24 & 28
Using the dimensions given in fig. 14 as a reference,
mark and cut a 105mm hole in the ceiling and/or roof.
Fit the appropriate flashing plate to the roof and insert
the vertical flue terminal through the flashing plate from
the outside, ensuring that the collar on the flue terminal
fits over the flashing.
The fixing holes for the wall-mounting bracket & jig
should now be drilled and plugged, an appropriate type
and quantity of fixing should be used to ensure that the
bracket is mounted securely. Once the bracket has
been secured to the wall, mount the appliance onto the
bracket & jig.
IMPORTANT
The vertical flue terminal is 1.0 metre in length and
cannot be cut; therefore it may be necessary to adjust
the height of the appliance to suit or use a suitable
extension.
Remove or discard the flue restrictor ring from the
appliance flue outlet (see fig. 1), if the total flue length –
including the allowance for any additional bends –
exceeds 1.0 metre.
Connect the vertical flue assembly to the boiler flue
spigot using the 60mm & 100mm clips, gaskets, &
screws (supplied), ensuring the correct seal is made.
The flue support bracket (supplied with the vertical flue
kit) can now be fitted.
If the vertical flue requires extension/s or additional
bend/s, connect the required number of flue extensions
or bends (up to the maximum equivalent flue length)
between the boiler and vertical flue assembly (see fig.
13A).
NOTE
When cutting an extension to the required length, you
must ensure that the excess is cut from the plain end of
the extension and that the inner (60mm) pipe is 7.5mm
longer than outer (100mm) pipe (see fig. 13A). Remove
any burrs, and check that any seals are located properly.
You must ensure that the entire flue system is properly
supported and connected.
Fig. 14
5.5.3 TWIN FLUE SYSTEM
The Vokera twin flue system enables greater
flue distances to be achieved (see 5.4.2) than
that of the standard concentric flue system. It
can be used for horizontal or vertical
applications, however the twin flue system
must be converted to the dedicated concentric
flue kit for termination. It is essential that the
installation of the twin flue system be carried
out in strict accordance with these instructions.
GUIDANCE NOTES ON TWIN FLUE
INSTALLATION
• The flue must have a fall back of 1º back to
the appliance to allow any condensate that
may form in the flue system to drain via the
condensate drain. Consideration must also
be given to the fact that there is the possibility
of a small amount of condensate dripping
from the terminal.
• Ensure that the entire flue system is
adequately supported, use at least one
bracket for each extension.
• The entire flue system must be adequately
insulated to maintain heat within the flue
system thereby reducing the possibility of
condensate production.
• As the exhaust outlet pipe can reach very
high temperatures it must be protected to
prevent persons touching the hot surface.
Reduction for bend
Twin flue accessories
Bend Reduction in maximum flue length for
each bend
45º bend 1.0 metre
90º bend 1.0 metre
Part No. Description Length
0225805 Horizontal flue terminal 1.0 metre
0225810 Vertical flue terminal 1.0 metre
300 Twin adapter kit N/A
0225770 Pitched roof flashing plate N/A
0225765 Flat roof flashing plate N/A
0225815 Condensate drain kit N/A
0225820 0.25m extension (pair) 250mm
0225825 0.5m extension (pair) 500mm
0225830 1.0m extension (pair) 1000mm
0225835 2.0m extension (pair) 2000mm
0225840 45º bend (pair) N/A
0225845 90º bend (pair) N/A
0225850 Twin bracket (5) N/A
0225855 Single bracket (5) N/A