Ariston CLAS HE R 12 Installation And Servicing Instructions page 24

installation
Fitting the Coaxial Flue
Note: See table for maximum and minimum flue
runs.
Contents:
1x Silicone O-Ring (60mm)
1x Conical Adaptor (60/100mm)
1x Vertical Flue Kit (80/15mm)
3x Screws
Total length
of Vertical Kit
1355 mm
Fig. 7
Fig. 8
4
(Ø 60 / 100 Vertical)
Useable length
of Vertical ue
690 mm*
1
180 mm
The vertical flue kit is supplied with a specially de-
signed weather proof terminal fitted, it can be used
either with a flat roof or a pitched roof.
The vertical flue kits useable lengths with the
pitched roof flashings are indicated in Fig. 7.
Before proceeding to fit the flue, ensure that the
maximum flue length has not been exceeded (See
the tables) and that all elbows and bends have been
taken into consideration, the maximum flue length
can be found on the table on page 7 & 8. For each
additional 90° elbow 1 metre must be subtracted
from the total flue length, and for each 45° bend
0.5 metres must be subtracted from the total flue
length (the height of the vertical adaptor and a 45°
bend can be seen in Fig. 7).
Mark the position of the flue hole in the ceiling
and/or roof (see Fig. 7 for distance from wall to the
centre of the flue).
Cut a 130mm diameter hole through the ceiling
and/or roof and fit the flashing plate to the roof.
DO NOT cut the vertical flue kit.
To connect the vertical flue kit directly to the boiler,
place the vertical starter kit (Part No. 3318079) (see
Fig. 7) onto the exhaust manifold and secure with
the clamp, fit the vertical adaptor onto the vertical
starter kit (note: there is no need to use a clamp to
secure this as it is a push fit connection), the vertical
flue kit must then be inserted through the roof
flashing, this will ensure that the correct clearance
above the roof is provided as the terminal is a fixed
height.
Should extensions be required, they are available
in 1 metre (Part No. 3318077), 500mm (Part No.
3318078), they must be connected directly to the
vertical starter kit before connecting the adaptor to
allow the vertical flue kit to be fitted. In the event
that extension pieces need to be shortened, they
must only be cut at the male end and it must be
ensured that the inner and outer flue remain flush.
When utilising the vertical flue system, action
must be taken to ensure that the flue is supported
adequately to prevent the weight being transferred
to the appliance flue connection by using 1 flue
bracket per extension.
When the flue passes through a ceiling or wooden
floor, there must be an air gap of 5mm between
any part of the flue system and any combustible
material. The use of a ceiling plate will facilitate this.
Also when the flue passes from one room to another
a fire stop must be fitted to prevent the passage of
smoke or fire, irrespective of the structural material
through which the flue passes.