VOKERA Linea Installation & Servicing Instructions Manual - page 13
11
Fig. 9
“X”
12/15/20HE = 202mm
25/30/35HE = 218mm
“X”
28/32/36 HE = 218 mm
“X”
Fig. 8
EXTENDING THE FLUE
Connect the bend – supplied with the terminal kit – to the top of the
boiler using clamp (supplied) see fig. 7. The additional bends &
extensions have push-fit connections, care should be taken to
ensure that the correct seal is made when assembling the flue
system. Connect the required number of flue extensions or bends
(up to the maximum equivalent flue length) to the flue terminal
(see fig. 7-8).
The flue system should have a minimum of 1º;
maximum of 3º rise from the boiler to outside, to ensure any
condense fluid that forms, is allowed to drain back to the appliance.
NOTE
When cutting an extension to the required length, you must ensure
that the excess is cut from the plain end of the extension (see fig. 7-
8). Remove any burrs, and check that all seals are located properly.
You must ensure that the entire flue system is properly supported
and connected. Seal the flue assembly to the wall using cement or
a suitable alternative that will provide satisfactory weatherproof-
ing. The interior and exterior trim can now be fitted.
4.5.2 CONCENTRIC VERTICAL FLUE
The appliance can be used with either the Vokèra condensing 60/
100mm concentric flue system or the optional 80/125mm concentric
flue system.
NOTE
These instructions relate
only
to the Vokèra condensing 60/100mm
concentric flue system. For specific details on the installation of the
80/125mm concentric flue system please refer to the instructions
supplied.
The vertical flue terminal can be connected directly to the appliance
flue outlet. Alternatively, an extension or bend can be connected to
the appliance flue outlet if desired, however if additional bends
are fitted, a reduction must be made to the maximum flue length
(see table below).
Reduction for bends
Bend
Reduction in maximum flue length for each bend
45º bend
0.5 metre
90º bend
1.0 metre
Vertical flue terminal and accessories
Part No.
Description
Length
29450122
Vertical flue terminal
1000mm
531
Pitched roof flashing plate
N/A
532
Flat roof flashing plate
N/A
29450123
90-degree bend
N/A
29450124
45-degree bends (pair)
N/A
29450125
500mm extension
500mm
29450126
1000mm extension
1000mm
29450127
2000mm extension
2000mm
29450128
Telescopic extension
350/730mm
529
Wall bracket pack (5)
208mm
Using the dimensions given in fig. 7A as a reference, mark and cut
a 125mm 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 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.
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.
Connect the vertical flue assembly to the boiler flue spigot using the
100mm clip, gasket & 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.
Ensure that any horizontal sections of the flue system have a
minimum 1º; maximum 3º fall back to the boiler (1º = 17mm per
1000mm).
NOTE
When cutting an extension to the required length, you must ensure
that the excess is cut from the plain end of the extension. Remove
any burrs, and check that any seals are located properly.
You must ensure that the entire flue system is properly supported
and connected.
4.5.3 TWIN FLUE SYSTEM
The Vokèra twin flue system enables greater flue distances to be
achieved than that of a 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 have a minimum 1º; maximum 3º (1º = 17mm
per 1000mm) fall back to the appliance to allow any condensate
that may form in the flue system to drain via the condensate drain.
X= Measured
distance from
flue spigot to
hole drilled
Y= Measured hight from
bracket to centre of hole drilled
X= terminal only
X= 2m
X= 3m
X= 3.85 m
min
114mm
132mm
149mm
164mm
max
114mm
166mm
219mm
265mm
Fig. 7B