Fan Dimensions
Range Overview
Electrical Installation
Aura
Fan Range
Installation and Operating Guide
Aura 100B - 9041347
Aura 100T - 9041348
Aura 100HT - 9041349
Aura 100MST - 9041350
Aura 125B - 90000532
Aura 125T - 90000533
Aura 125HT - 90000534
Aura 125MST - 90000535
Aura 150B - 9041351
Aura 150T - 9041352
Aura 150HT - 9041353
Aura 150MST - 9041354
Electrical Installation
Aura 100/125/150 Basic and MST
Wiring for fans with no external switching
Aura 100/125/150 Timer and Humidity Timer
Wiring for fans with external switching
Note: An external switch can be connected to the
Live for Aura 100B fans.
Page 5 of 16 Page 6 of 16 Page 7 of 16 Page 8 of 16
Model A B C D E
Aura 100 150 102
Aura 125 176 87 125
Aura 150 205 124 150
100
D
122 17
141
174
19
19
Fan Overview
1
5
2
Page 2 of 16
3
4
1.Cover, 2.Casing,
3.Motor 4. Impeller,
5.Control.
Mechanical Installation
Aura fans can be wall mounted.
For mounting the fan, a ø100/125/150mm hole is
required for the spigot, as well as at least two holes
for the mounting screws. When mounting the fan,
remove the front cover and place the fan into the pre
drilled hole. Make sure that the spigot fits into any
pre-installed ducting. Wire the fan appropriately
according to page 5, ensuring that the cables from
the fan are routed through the provided cable hole.
Use at least two mounting screws to secure the fan to
the ceiling or wall ensuring not to over tighten and
replace the front cover with the retention screw.
Ensure free running of the fan impeller and that
flexible duct connections are not over tightened to the
fan outlet spigot.
Airflow recommends that rigid ducting is used instead
of flexible ducting, this will ensure maximum
performance.
Aura fans are designed for ventilation of domestic
premises i.e. toilets, bathrooms, utility rooms and
kitchens. They are recommended for 'through the wall'
installation.
The Aura 100/125/150B models may be used as a
simple extract fan operated by a remote switch.
The Aura 100/125/150T models include adjustable
timer function 2 to 30 minutes.
The Aura 100/125/150HT models includes an
adjustable timer function 2 to 30 minutes and an
adjustable humidity function 60 to 90% RH.
The Aura 100/125/150MST models includes adjustable
timer function 2 to 30 minutes and motion sensing.
Fan Size
100mm
125mm
150mm
Max flow,
m3/h
70
115
235
Max Pressure
Pa
25 5.6 26
55
86 20
Page 3 of 16
Nominal
power, W
Noise
level
dB(A)
9.3
Fan Adjustment - Timer
The fan with timer function switches on when the
voltage is supplied to the Ls terminal via an external
switch.
After the voltage to the Ls terminal is disconnected
the fan continues to run for the set run on timer
period between 2 and 30 minutes. The run on timer
period is adjusted by turning the potentiometer (T)
clockwise to increase and anti-clockwise to decrease.
T
The Aura fan range is IPX4 rated and is suitable
for mounting in Zone 2 in bathrooms, toilets,
kitchens, utility rooms and inside shower cubicles
when installed with a 30mA RCD. In addition AFDD
protection is also required.
The fan requires a 220 - 240V 50Hz single phase
supply. Class II equipment. BS EN 60417. An external
3A fuse is required for each fan unit. Cable sizes
(max): Fixed flat wiring 2 core 1mm2, 3 core 1/1.5mm
All electrical installation work to be carried out by a
competent person in compliance with the relevant
Building Regulations/Standards as well as the current
edition of BS7671 (IET Wiring Regulations).
Important Notes
The Aura range also complies with the requirements
of the EU norms and directives. Do not place the
ventilator near direct heat sources, e.g. radiant
heaters, or where temperatures can exceed 40°C
(104°F). Precautions must be taken to avoid back flow
of gases in rooms with open flue fuel burning
31
appliances.
35
Page 4 of 16
Fan Adjustment - Humidity & Timer
Humidity and timer functions are activated when the
voltage is supplied to the Ls terminal via an external
switch or when the humidity level rises above the set %
RH level (adjustable between 60 and 90% RH).
After the voltage to the Ls terminal is disconnected or
the humidity level falls below the set %RH level, the
fan continues to run for the set Run on timer period
between 2 and 30 minutes.
T
H
The humidity level is adjusted by turning the
potentiometer (H) clockwise to increase and anticlockwise to decrease.
To set the maximum humidity level the potentiometer
(H) has to set at the max position (90%).
See page 7 “Fan adjustment -Timer” for timer
adjustment instructions.
2
Fan Adjustment - Motion Sensor & Timer
The fan with motion sensor and timer function
switches on when movement is detected between a
distance of 1 and 4 meters from the fan. The sensor
has a detection angle of 100° horizontally.
Once movement ceases, the fan continues to run
for the set run on timer period which is adjustable
between 2 and 30 minute.
Fan Assembly - Timer / Humidity & Timer
Front cover
Electronic
Control
T & HT
Fan body
assembly
Front
Fan Assembly - Motion Sensor & Timer
Fan body
assembly
Through The Wall Installation
T
Page 9 of 16
Best Practice Recommendations
The Building Regulations 2010, Statutory
Instrument Part 9, paragraph 42, imposes a
requirement that testing and reporting of
mechanical ventilation performance is conducted in
accordance with an approved procedure.
Compliance with this requirement by an assessed
and registered ‘Competent Person’ should follow a
‘Best Practice’ process and adopt air flow
measurement, Method A – The Unconditional
Method – using a suitable UKAS certified
measuring instrument. Generically referred to as a
‘Zero Pressure Air Flow Meter’ or ‘Powered Flow
Meter’.
Further information on this method is detailed in
NHBC Building Regulations Guidance Note G272a
10/13 and BSRIA ‘A Guide to Measuring air flow
rates document BG46/2015.
Page 10 of 16
Maintenance
SAFETY FIRST: ALWAYS ISOLATE THE FAN UNIT
FROM THE POWER SUPPLY BEFORE REMOVING
THE COVER.
When installed according to these instructions the
Aura range is completely safe. The materials used
do not constitute a hazard.
Cleaning
The external housing of the fan can be wiped with a
damp cloth. Do not use household cleaners
containing abrasives.
Note: Always isolate the fan when cleaning. Never
clean any parts of the fan assembly by immersing in
water or using a dishwasher.
Warning
This appliance can be used by children aged from 8
years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision
or instruction concerning use of the appliance in a
safe way and understand the hazards involved.
Children shall not play with the appliance. Cleaning
and user maintenance shall not be made by children
without supervision
Page 14 of 16 Page 15 of 16 Page 16 of 16
Electronic
control
Page 11 of 16
Warranty
Airflow guarantees the Aura for 2 years from date of
purchase against faulty material or workmanship,
Applicable to unites installed and used in the UNITED
KINGDOM.
Warranty covers the fan, not the re-instalaltion of this
if required. In the event of any defective parts being
found, Airflow Developments Ltd reserves the right to
repair, or at our discretion replace without charge
provided the unit:
• Has been installed in accordance with the fitting
and wiring instructions supplied with each unit.
• Has not been connected to an unsuitable electrical supply.
• Has not been subjected to misuse, neglect or
damage.
• Has not been modified or repaired by any person
not authorised by Airflow Developments Ltd.
• Has been installed by a person who is recognised
as a competent person who is part of a competent
scheme provider (e.g. NICEIC Ventilation
Scheme).
To maximise airflow rigid ducting should be used.
Where flexible ducting is used the diameter must be
maintained and it is good ventilation practice that the
ducting is extended to 90% of its possible length in
order to maintain the best possible airflow. Ensure
that flexible duct connections are not over tightened
to the fan outlet spigot.
The fan and ducting should be installed in accordance
with the requirements of the Domestic Ventilation
Compliance Guide, part of the Building Regulations.
Page 12 of 16
Airflow Developments Ltd shall not be liable for any
loss, injury or other consequential damage, in
the event of a failure of the equipment or arising
from, or in connection with, the equipment
excepting only that nothing in this condition shall be
construed as to exclude or restrict liability for
negligence. Full details at airflow.com/terms
This warranty does not in any way affect any
statutory or other consumer rights.
Disposal
Do not dispose of with household waste.
Please recycle where facilities exist.
Check with your local authority for recycling
advice.
Germany
Airow Lutechnik GmbH
Wolbersacker 16
53359 Rheinbach
Germany
Tel: +49 (0) 222 69205 0
Email: info@airow.de
Web: airow.de
80000433 Issue 3 08/21
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