Ravelli Flexi 9, Use And Maintenance Manual

Page: 26 / 60

Use and maintenance manual Flexi 7 - Flexi 9
Pag.26
Rev.0 01/03/2023
EN
This type of installation (See Fig.1) requires an insulated chimney
pot, even if the entire conduit is installed inside the building.
Besides, the structure must be inserted into a properly ventilated
skylight shaft.
In the lower part of the chimney pot there is an inspection cover,
properly isolated from wind and rain.
It is possible to use an existing chimney or a shaft via ducting. For
this type of installation the standards on ducted smoke evacuation
systems must be complied with. In the lower part of the chimney
pot, inside the home, there is a "T" type fitting installed; externally
there is another one installed, so that the outside section can be
inspected.
It is prohibited to install two 90° bend, since the ashes would
quickly obstruct smoke passage, causing draught problems in the
appliance. (See Fig. 2)
Ashes deposited in the
90° bend
NO
Installation example
Smoke duct: use of a
non-insulated tube
T Fitting
Insulated chimney
Fig.3
Protection from rain
T fitting for
condensation
Combustion ashes
collection chamber
+ condensation cap
Protection from rain
Fig.1
Grille for air passage into
the skylight shaft with
opening for inspecting the
chimney
Skylight shaft
T fitting for condensation
Insulated chimney
It is prohibited to install a 90° bend for the initial segment, since
the ashes would quickly obstruct smoke passage, causing draught
problems in the appliance. (See Fig. 2)
Fig.2
External
air intake
External
air intake
External
air intake