Envirovent SILENT Manual

Instruction leaflet
SILENT DUAL

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Fig. 1
1
7
6
2
5
4
ON
12
NO
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4
Condensate trap
Condensate drain
Suitable roof vent
2º-3º

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Fig. 3

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/ 1
220-240V50Hz / 1
A
C
B
A
F
øG
F
E
Fig. 4
L
N
øD
Model A B C ØD EFØG
SILENT DUAL 100 167 157 103 99 77,5 134 105
SILENT DUAL 125 187 164 107,5 118 80 164,5 125
SILENT DUAL 150 232 195 132 146,5 95 196 150

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SILENT DUAL axial extractor fans
Please read this instruction booklet carefully
before installing or starting up the product. It
contains important information on personal
and user safety measures to be followed
whilst installing, using and carrying out
maintenance work on the equipment.
The SILENT DUAL extractor fans have
been manufactured following current
technical safety regulations, production and
quality standards as laid down by the
international Quality Standard ISO 9001. All
components have been checked and every
one of the final products will have been
individually tested at the end of the
manufacturing process.
Check that the product is in perfect condition
while unpacking. Make sure that the product
corresponds to the one you have ordered
and that the details on the instruction plate
fulfil your requirements.
The installation must be carried out in
accordance with the electrical standards
and relevant Building Regulations in force in
your country. Once the product has been
installed, pass this booklet to the end user.
Recommendations
IMPORTANT: Before
installing and wiring the
unit, ensure that the
mains supply is
disconnected.
Working ambient
temperature for fan
equipment should not be
exceeded. Typically, this
falls within -5°C to +40°C,
unless stated otherwise.
The spigot cannot be
connected to a duct which is
used to extract smoke from
gas or any other fuel
appliance.
The extractor must not be
used in explosive or
corrosive atmospheres.
If the SILENT DUAL fan is
operating in a room where
there is a boiler or any
other kind of combustion
device that requires airflow
to work, check that the air
inlets to the room are
sufficient.
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.
Installation (fig.1):
1- Front grille
2- Front grille support
3- Connection terminals
4- Outlet
5- Removable backdraught shutter
6- Cable entry
7- Setting dip switches
The SILENT DUAL is suitable for wall or
ceiling mounting and can either extract
directly to atmosphere or via a ducted
system (fig.2).
The SILENT DUAL is provided with
a PIR (passive infra-red) detector.
To work properly, the extractor
must be installed in such a way that
detection can be carried out easily,
avoiding the situations indicated in
fig.3.
The unit can be mounted on the wall or
ceiling using the 4 raw plugs and the screws
provided. Make a hole in the wall or ceiling
of diameter:
- SILENT DUAL-100: 105 to 107 mm.
- SILENT DUAL-125: 125 to 132 mm.
- SILENT DUAL-150: 160 to 158 mm.
If using the EnviroVent high rise wall kit,
please refer to kit for core drill size
If the unit is to be installed in a ducted
system, use the following standard diameter
of duct:
- SILENT DUAL-100: 100 mm.
- SILENT DUAL-125: 125 mm.
- SILENT DUAL-150: 150 or 160 mm.
Ensure that there are no obstructions to the
airflow and that the impeller turns freely.
Fix the extractor fan to the wall in such a way
that it is not distorted in order to avoid noise
generation or problems with the rotation of
the impeller.
The SILENT DUAL is an extractor fan
designed to operate either continuously at
low speed or intermittently. (see section
“operation”)
In continuous operation, the
backdraught (5) shutter is not
necessary and can be removed.
If it works intermittently, keep the
backdraught shutter in place and make sure
it opens freely and has not been damaged
in transit.
Introduce the mains cable through the cable
entry (4) and fix it to the wall.
Electrical connection
The SILENT DUAL is an extractor fan
designed for a single-phase supply, with
voltage and frequency as indicated on the
rating plate of the unit.
The units are manufactured with double
electrical insulation (Class II) and therefore
they do not need an earth connection.
The electrical installation must include a
double pole switch with a contact clearance
of at least 3 mm.
Once the cable has been connected
proceed using the electrical wiring diagram
fig.4.
For the extractor fan to work
properly, it must be permanently
powered.
Operation
The SILENT DUAL is an extractor fan
equipped with a PIR (passive infra-red)
detector and a humidity sensor. This sensor
permanently controls the humidity level of
the room where it is installed, automatically
adapting the start-up threshold and the
speed of the extractor according to the real
environmental conditions throughout the
day and peaks in humidity (showers).
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The humidity control takes priority
over the PIR detector.
The PIR detector has priority over
the permanent control of the
environmental conditions.
Depending on the initial setting, you can
choose between two operation modes,
either intermittent or continuous
Intermittent operation
To select this operation, place the
dip-switch "1" in the "ON" position.
The extractor fan will stop.
The extractor starts automatically when a
slow increase in humidity is detected. It
starts at a speed that is in direct proportion
to the humidity level in the room until the
level returns to the start-up threshold.
The extractor also starts automatically at
medium speed (75% of the maximum
speed) when movement is detected and will
continue to operate for the length of time set
by the adjustable “run-on” timer, after being
triggered by the PIR.
Two set periods are available:
2 minutes and 15 minutes.
To select the set period of the “run on” timer,
place the dip-switch “2”:
in “OFF” position for 2 minutes
in “ON” position for 15 minutes.
If no more movement has been detected
once the run-on time, set by the timer is
passed and the humidity level is below the
start-up threshold, the extractor stops
automatically.
If the extractor detects a rise in humidity
(shower), the fan is boosted to high speed
and operates at this speed until the humidity
level drops below the start-up threshold
level.
Continuous operation
To select this operation, place the
dip-switch "1" in the "OFF" position.
Operation is similar to intermittent operation
with the difference that the extractor does
not stop but runs continuously on trickle
speed (43% of the maximum speed).
Maintenance
Fan equipment should be electrically
isolated and locked out before any work
starts.
The extractor fan only requires periodical
cleaning using a cloth lightly impregnated
with a soft detergent.
Recycling.
In accordance with EEC Standards
and our responsibility for future
generations, we are obliged to recycle
all the materials we can.
Therefore, please deposit all waste material
and packaging in their corresponding
recycling containers and hand in the
replaced units to the nearest handler of this
type of waste product.
The fan is mainly made of steel, copper and
plastic. These components should be
recycling in the following categories:
- Steel and iron
- Plastics
- Electronic scrap
After Sales Service
We recommend you do not dismantle or
remove any other parts than those
mentioned, as any tampering would
automatically cancel the guarantee. If you
detect any fault, contact EnviroVent on 0345
27 27 810.
Thank you for choosing EnviroVent. If you
experience any problems, please call our
dedicated Technical Team on 0345 27 27
810
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WARRANTY
The SILENT DUAL range products are covered by a five year warranty, subject to
the specified maintenance stated within this booklet.
If your fan has been supplied and installed by EnviroVent it is covered with a full
parts and labour warranty. If you detect a fault, please contact us on 01423
810810. You will be given guidance over the phone, or an arrangement may be
made for a member of our team to visit (call-out charges may apply if a fault
cannot be idenfied).
Supply Only
If your fan has been supplied by EnviroVent and installed by a third party , it is
covered by a parts only warranty. If you detect a fault and the product has been
installed in accordance to the fing/wiring instrucons, relevant guidance
documents and by a competent and qualified person (proof may be required),
please return the product to the place of purchase for a replacement.
Warranty Condions & Exclusions
Please note that a receipt will be required as proof of purchase. Fans bought
from an unapproved source, including but not limited to aucon websites, are
not covered by the warranty.
· The system must be correctly installed and operated according to the
instrucons contained in the user guide supplied.
· The warranty will be rendered invalid if the system has been serviced,
maintained, repaired, taken apart or tampered with by any person not
authorized, which in any way contradicts the instrucon guide set out
by EnviroVent.
· The warranty does not cover accidental damage, misuse or abuse.
· The warranty is in addion to your statutory or legal rights.

EnviroVent Ltd
EnviroVent House
Hornbeam Business Park
Harrogate
Hg2 8PA
01423 810 810
www.envirovent.com
[email protected]
Ref. 9023054300