installation
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. For each additional 90° elbow 1 metre must be subtracted from the maximum flue length, and for each 45° 0.5 metres must be subtracted from the maximum flue length (the height of the vertical adaptor and a 45° bend can be seen in Fig. 8).
Fig. 8
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) and 500mm (Part No. 3318078) lengths. 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 using 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. Use 1 flue bracket per extension.
When the flue passes through a ceiling or wooden floor, there must be an air gap of 25mm 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.
Fitting the Twin Pipe (Ø80 / 80)
Fig. 8a |
Note: See table for maximum and minimum flue runs.
Where it is not possible to terminate the flue within the distance permitted for coaxial flues, the twin flue pipe can be used by fitting a special adaptor to the flue connector and using the aperture for the air intake located on top of the combustion chamber.
Always ensure that the flue is adequately supported, using one flue bracket per extension and avoiding low points. (ARISTON supply suitable clamps as Part No. 3318015).
To utilise the air intake it is necessary to:
1)Take the air intake cover off the top of the appliance
2)Assemble the air inlet adaptor - see fig. 8a
The twin flue pipes can be fitted with or without additional elbows and need no clamps, simply ensure that the red
When running the twin flue pipe vertically it can be converted back to coaxial flue to enable vertical termination with a coaxial kit by use the pipe bridge (Twin - Coaxial Adaptor - Part No. 3318089).
It is not possible to terminate concentrically horizontally. Termination is only possible with separate air and exhaust terminals.
When siting the twin flue pipe, the air intake and exhaust terminals must terminate on the same wall, the centres of the terminals must be a minimum of 280 mm apart and the air intake must not be sited above the exhaust terminal (refer to Fig. 10). The air intake pipe can be run horizontally, however, the terminal and the final 1 metre of flue must be installed either horizontally or with a slight fall away from the boiler to avoid rain ingress.
It is also strongly recommended that the air intake pipe run be constructed of insulated pipe to prevent condense forming on the outside of the tube.
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