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Types
of Fans
- Standard.
For remote switching through wall light or separate
switch.
- Timer
model with built-in adjustable time delay operated
by the light switch.
- Pullcord
model with built-in pullcord switch.
- Humidity
controlled models with built-in adjustable sensor
which operates the fan automatically.
- P.I.R.
model sensitive to movement. Switches on when room
is entered and off when room is vacated.
- Acoustic Cabinet Fans fitted
with low pressure direct drive centrifugal fans and
lined with extra thick acoustic foam to minimise radiated
and inlet noises.
The compact design and low noise levels enables installation
in false ceiling application and makes them suitable
for the widest range of installations where noise
levels are one of the main requirements.
- Axial
Fans are designed to move air over short distances,
i.e. window fixing or through mounting, and are not
suitable for ducting over 2 metres in length. Available
in 4", 5", 6" ,9" and 12" sizes.
- Ideal for through the
wall and window applications they provide high performance
with a slim profile, however, they are suitable for
use with short, straight runs of ducting only, up
to a maximum 2.5m
- Axial Flow Fans
is a development of the propeller fan, but is more
efficient ( 70% - 80% ) due mainly to the aerofoil
section blades and finer clearances between the impeller
blade tips and the cylindrical fan casing for commercial
uses.
- Centrifugal
Fans Using a cylindrical centrifugal impeller
they are designed to move air over longer distances
and will perform well against the pressure caused
by long lengths of ducting and resistance by grilles.
N.B. When ducting vertically it is recommended that
a condensation trap is used.
These are quiet,
powerful and suitable for wall, ceiling and window
applications.
- Humidistat
Controls TLC have a complete range of integral
Humidistat Controls on all their fans; they are also
available with a pullcord override switch. A remote
mounted model is also available (BG REMHM). All are
designed to switch on the fan as the humidity rises
in the bathroom and off as it drops. It will continue
to monitor the humidity 24 hours per day, thus preventing
mould growth on walls and ceilings and drastically
reduces condensation problems.
- Low Voltage Fans. It is a requirement
of the Institute of Electrical Engineers On-Site Guide
that within the bath tub or shower basin, or within
reach of a person in a bath or shower, that only equipment
operating at 12 Volts or less shall be accessible.
- Mixed Flow Fans combine
the characteristics of the larger volume of air moved
by the axial fan and the higher pressure's of the
centrifugal fans.
- Passive
Infra-red Fans P.I.R. extractor fans sensitive
to movement will switch on the fan when someone enters
the room and switch it off when the room is vacated.
The units incorporate a time delay switch, which requires
no switched live and is energy efficient. Range 5
metres.
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