Envirovent SILENT 100 Manual

SILENT
Instruction leaflet

Fig.1a
Fig.1b
1
2
3
4
5
1
2
3
4
5
6
3

Fig.4
Fig.3
Fig.2
L N
L
N
Ls
L N
L
N
Ls
4

L
N
Fig.7
Fig.6
Fig.5
L N Ls
L N Ls
T (min) T (min)
A
5
20
30
L
N
SILENT T SILENT IT
SILENT PIR
5

Fig.10
Fig.9
Fig.8
L
N
L N Ls
L
N
L N Ls
2 3 41 5 6 7 8
ON
2 3 41 5 6 7 8
ON
OFF
6

Fig.11
L
N
L N Ls
SILENT 100
SILENT 125 & 150
A
B
E
D
C
ØF
MODEL A B C D E ØF
SILENT 100 158 158 109,3 84,6 79 98,9
SILENT 125 180 180 119 89 80 118
SILENT 150 214 214 149 113,5 95 147
SILENT
7

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SILENT 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 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 and the disconnection
device of the fixed installation used must
be in accordance with the installation
regulations in force in each 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 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

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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):
This fan is IP45 rated and it is suitable
for application in zones 1 and 2 with
RCD protection.
1- Protection grille
2- Connection terminals
3- Outlet with backdraught shutter
4- Cable entry
5- Screwdriver to adjust Timer and
Hygrostat (not supply with S and P
models)
6- Pullcord (P models)
The SILENT is suitable for wall or ceiling
mounting and can either extract directly
to atmosphere or via a ducted system
(fig.2).
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-100: 105 to 107 mm.
- SILENT-125: 125 to 132 mm.
- SILENT-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-100: 100 mm.
- SILENT-125: 125 mm.
- SILENT-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.
Make sure that the backdraught shutter
opens freely and has not being damaged
in transit. Introduce the mains cable
through the cable entry (4) and fix it to the
wall.
Connect the electrical wiring as set out
below and then mount the protection
grille (1).

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Electrical connection
The SILENT 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 cable must enter the
SILENT through the cable entry (4).
The SILENT must be connected to the
electrical supply in accordance with local
wiring regulations.
Once the cable has been introduced
proceed using the electrical wiring
diagram applicable to the selected
model.
SILENT S
For these models, use the following
diagrams:
Fig.3: Switching the extractor through the
light switch.
Fig.4: To switch the fan through an
independent switch.
SILENT T
This model is provided with an adjustable
over-run timer. The timer allows the fan to
continue to operate for the selected
period after the switch has been turned
off (fi g.6).
Fig.5 shows how to connect the fan with
timer utilising the same switch as for the
lighting circuit.
To set the timer, turn the potentiometer
on the printed circuit board as (fig. 7).
- To reduce the “run on” time, turn
anticlockwise (min. 1 minute).
- To increase the “run on” time, turn
clockwise (max: 30 minutes).
SILENT-100 IT
(This version is only available as
SILENT-100)
This model is provided with an adjustable
over-run timer. The timer allows the fan to
continue to operate for the selected
period after the switch has been turned
off (fi g.6).
ATTENTION: The product also includes
an over-run timer facility that starts the
fan after the first 50 seconds of non-
operation. After these first 50 seconds,
the fan operates automatically.
SILENT HT
IMPORTANT: Do not remove the tape
covering the humidity sensor located
on the reserve of the grille.
Models provided with an electronic
humidistat which can be adjusted from
60% to 90 % RH (Relative Humidity) and
with a timer, adjustable between 1 and 30
minutes.
The desired humidity level and run on
time are selected by means of 8 dip-
switches placed on the printed circuit
board, and easily accessible. Each dip-
switch has two positions [ON (1) and OFF
(0)] which are selected with the small
plastic screwdriver supplied with the fan
(fig.10):
The functions of these dip-switches are:

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- Switch 1: “Interval” function selection
(yes or no)
- Switches 2 and 3: Interval time settings
between 4, 8, 12 and 24 hours
- Switches 4 and 5: Humidistat settings
between 60, 70, 80 and 90%
- Switches 6 and 7: Over-run timer
settings between 1, 5, 15 and 30
minutes
- Switch 8: Start-up timer function (yes
or no)
Automatic operation:
The extractor is connected to the main
supply with only two wires. The
humidistat causes the extractor to
operate automatically when the humidity
level in the room is higher than the set
level. The extractor will stop automatically
when the humidity drops below the
selected level (-5% or +10%) and after
the selected period set on the over-run
timer.
"Interval” functions:
This function is useful when the extract
fan is installed in very wet (near the sea)
or the ambiance exceeds the set level for
a very long time. To prevent the fan to run
for hours without stopping, the "Interval"
function allows the fan to switch off
automatically one hour after it began to
run. The extractor keeps switched off
during the set time for interval function. If
the humidity level is still above the set
level when the time interval is over, the
extract fan switches on again and run
during one hour. To select this function
put the dip-switch 1 to position "ON”
To adjust the set time for interval function,
use the dip-switches 2 and 3.
When, on the contrary, the extract fan
never switches on because the humidity
level is always very low or it is improperly
installed (above heating appliance,
behind a door, in an area with no air
movement) putting the 1 dip-switch
interval function to position "ON", the fan
switches on automatically during 1 hour
and then it keeps switched off during the
set time for interval function. This function
causes the fan to run whatever the
humidity level.
To select this function put the dip-switch
1 to position "ON”
To adjust the pre-set time for interval
function, use the dip-switches 2 and 3.

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Automatic operation with external switch
to override the extractor:
The extractor is connected to the main
supply with three wires.
Operation as previous “Automatic
operation”, with the facility to override the
humidistat by means of the light switch
when the humidity level in the room is
lower than the selected level. In this case
the extractor continues to operate for the
selected period of time (over-run timer)
after the switch light has been switched
off.
ATTENTION: When the humidity rate is
above the selected value, the automatic
option takes precedence over the manual
and the unit cannot then be switched off
using a switch.
Start-up timer function:
In this operation, the “start-up timer
function” allows to delay the extractor
start-up for a period of 50 seconds. So
that, for example, the fan does not switch
on if the usage time of the bathroom is
less than 50s.
If you exceed the 50s and the humidity
level in the room is below the selected
level, the fan switches on, and when the
light switches off, runs the time set by the
timer.
This function is selected with the dip-
switch 8.
Factory settings:
- Interval function: OFF
- Interval time: 4h
- Humidistat: 60%HR
- Timer: 1 minute
- Start-up timer function: OFF
SILENT-100 PIR
(This version is only available as
SILENT-100)
Models provided with a PIR detector. The
unit starts automatically when a
movement is detected with maximum
distance of 4 meters (fig.9).
They are also fitted with an adjustable
“run on” timer (1 to 30 minutes), and the
unit will continue to operate for the set
period after initiation by the movement
detector.
To set the timer, turn the potentiometer
on the printed circuit board as (fig. 7).
- To reduce the “run on” time, turn
anticlockwise (min. 1 minute).
- To increase the “run on” time, turn
clockwise (max: 30 minutes).
SILENT P
Models provided with on/off pullcord
switch use the following wiring diagram:
Fig.11: Fan operating only with pullcord.
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

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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.
Thank you for choosing EnviroVent. If
you experience any problems, please call
our dedicated Technical Team on 0345
27 27 810
EnviroVent
EnviroVent House
Hornbeam Business Park
Harrogate
HG2 8PA

WARRANTY
The SILENT 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 identified).
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 fitting/wiring instructions, 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 Conditions & Exclusions
Please note that a receipt will be required as proof of purchase. Fans
bought from an unapproved source, including but not limited to auction
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.
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Ref. 9023065401
EnviroVent Ltd
EnviroVent House
Hornbeam Business Park
Harrogate
HG2 8PA
01423 810 810
[e-mail]
www.envirovent.com