roof windows types

Air Inlet Construction
Attic and loft spaces should always be ventilated
effectively, to meet specific ventilation standards.
Fakro roof windows are installed with special air
inlets, which provide a free flow of fresh air to the
room even when windows are closed. Stale air
should be removed by means of existing ventilation,
generally found in bathrooms, kitchens, or
through ventilation shafts and ducting.
Air inlet V-35
Air inlet V-10
Positioned on the top part
of the window frame, the
V-10 has a manually adjustable
air flow regulator. When
fully opened this inlet supplies
fresh air at 10m³/h at a
pressure difference of 10Pa.
The inlet’s construction provides
excellent filtering and
acoustic insulation. Air inlet
V-10 should be used solely
in rooms where unassisted
gravitational ventilation
works well.
Used in the following windows:
— FTS-V
— FTL/D, FTL/D-W
— FLL
Air Inlet V-35
Positioned at the top part of
the window frame, features
a manual air flow regulator.
When fully opened this
inlet supplies fresh air at
21 to 38m³/h at a pressure
difference of 10Pa, depending
upon the width of the
window.
As a result of this greater efficiency,
air humidity inside the
room is effectively reduced,
thereby reducing condensation.
The V-35 air inlet can
in part discharge air, when
normal gravitational ventilation
isn’t working properly. Its
excellent venting efficiency
guarantees that a greater
amount of stale and humid
air is removed from the room.
Hygroscopically
Controlled Air Inlet
Positioned in the top part of
the window frame, this provides
automatic regulation
of airflow, depending upon
the level of humidity inside
the room. Supplies fresh air
at 30m³/h at a pressure difference
of 10Pa. A hygroscopic
polyamide tape acts as a sensor,
increasing or reducing in
size according to humidity
levels, thereby applying pressure
to a piston within the
unit. The inlet monitors room
humidity continuously and
automatically and even when
left open, does not expose
the room to unnecessary loss
of warmth. The hygroscopically
controlled air inlet is
used with the V-35.
Manometer Air Inlet
Positioned in the top part of
the window frame, the inlet
is controlled by variations in
air pressure. The inlet is fully
automatic, so that even during
extreme weather conditions,
a suitable fresh airflow
is maintained, at a rate of
30m³/h. Airflow is regulated
by a polythene tape inside
the air inlet which changes its
position with variations in air
pressure. The manometer air
inlet is used with the V-35.
Used in the following windows:
FTP-V/P, FTP-W/P
Used in the following windows:
— FTP-V, FTP-W
— FPP
Used in the following windows:
— FTP-V/H, FTP-W/H
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