Use Of External Chimney - LASIAN AUDAX 6 KW User And Installation Manual

5.4.4- USE OF EXTERNAL CHIMNEY

An external flue can be used provided it complies with the following requirements:

Use only insulated double-walled stainless
steel pipes fixed to the building.

There must be an inspection opening at
the base of the flue to permit periodic
checks and maintenance.

The chimney must rise up to the ridge,
ensuring the compliance with the rest of
requirements outlined in paragraph 5.4-
DUCT OR CHIMNEY".
Installation example of stove with external
chimney →
5.4.5- FLUE DUCT ENDING
The flue duct must always finish its route upright, and shall have on top a device called chimney cowl.
The cowl should meet the following requirements:
o
o
o
o
o
o
For a proper operation of the stove, the discharge capacity of the fumes should be kept within certain
parameters under any weather conditions, so it is very important to choose well the place where we
will put the cowl and kind of cowl to use.
COD. 83119L.01EN
To have a useful internal section equivalent to the flue pipe.
To have a useful outlet section of not less than twice of the flue pipe section.
It must prevent the penetration of rain, snow or foreign matter.
The cowl must be installed to ensure the adequate dispersion and dilution of the combustion
products outside the reflux area. For this we will use a cowl windproof type and it will surpass the
ridge height (see fig. 5.9).
With buildings and other adjoining obstacles, we will consider the distances and measurements
indicated by the corresponding Standard.
It is forbidden the installation of caps or horizontal deflectors (widely used in gas boilers, see Fig.
5.10) as terminal in chimneys due to that they can lead to pressurize the stove and taking place
combustion problems.
21
Inspection
Fresh air intake with non-
closable grille
09//2016