Vents Quiet 100 DC User manual

AXIAL FAN
USER’S MANUAL
www.ventilation-system.com
EN
Quiet 100 DC
Quiet-Style 100 DC

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This user’s manual is a main operating document intended for technical, maintenance, and operating staff.
The manual contains information about purpose, technical details, operating principle, design, and installation of the
Quiet(-Style) 100 DC unit and all its modifications.
Technical and maintenance staff must have theoretical and practical training in the field of ventilation systems and should
be able to work in accordance with workplace safety rules as well as construction norms and standards applicable in the
territory of the country.
CONTENTS
Delivery set............................................................................................................................................................................................................................................. 7
Brief description .................................................................................................................................................................................................................................. 7
Operation guidelines ....................................................................................................................................................................................................................... 7
Designation key................................................................................................................................................................................................................................... 8
Installation and set-up..................................................................................................................................................................................................................... 10
Fan setup ................................................................................................................................................................................................................................................. 13
Fan options............................................................................................................................................................................................................................................. 14
Maintenance.......................................................................................................................................................................................................................................... 16
Storage and transportation regulations............................................................................................................................................................................... 17
Manufacturer’s warranty................................................................................................................................................................................................................ 20

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This unit is not intended for use by persons (including children)
with reduced physical, sensory or mental capabilities, or lack of
experience and knowledge, unless they have been given supervision
or instruction concerning use of the unit by a person responsible for
their safety.
Children should be supervised to ensure that they do not play with
the unit.
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.
Cleaning and user maintenance shall not be made by children
without supervision.
Children shall not play with the appliance.

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Connection to the mains must be made through a disconnecting
device, which is integrated into the fixed wiring system in accordance
with the wiring rules for design of electrical units, and has a contact
separation in all poles that allows for full disconnection under
overvoltage category III conditions.
Ensure that the unit is switched off from the supply mains before
removing the guard.
Precautions must be taken to avoid the back-flow of gases into the
room from the open flue of gas or other fuel-burning appliances.
All operations described in this manual must be performed by
qualified personnel only, properly trained and qualified to install,
make electrical connections and maintain ventilation units.
Do not attempt to install the product, connect it to the mains, or
perform maintenance yourself.
This is unsafe and impossible without special knowledge.

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Disconnect the power supply prior to any operations with the unit.
All user’s manual requirements as well as the provisions of all the
applicable local and national construction, electrical, and technical
norms and standards must be observed when installing and
operating the unit.
Disconnect the unit from the power supply prior to any connection,
servicing, maintenance, and repair operations.
Only qualied electricians with a work permit for electrical
units up to 1000 V are allowed for installation. The present user’s
manual should be carefully read before beginning works.
Check the unit for any visible damage of the impeller, the casing, and
the grille before starting installation. The casing internals must be free
of any foreign objects that can damage the impeller blades.
While mounting the unit, avoid compression of the casing!
Deformation of the casing may result in motor jam and excessive
noise.
Misuse of the unit and any unauthorised modifications are not
allowed.
Do not expose the unit to adverse atmospheric agents (rain, sun, etc.).
Transported air must not contain any dust or other solid impurities,

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THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE.
sticky substances, or fibrous materials.
Do not use the unit in a hazardous or explosive environment
containing spirits, gasoline, insecticides, etc.
Do not close or block the intake or extract vents in order to ensure the
efficient air flow.
Do not sit on the unit and do not put objects on it.
The information in this user’s manual was correct at the time of the
document’s preparation.
The Company reserves the right to modify the technical
characteristics, design, or configuration of its products at any time in
order to incorporate the latest technological developments.
Never touch the unit with wet or damp hands.
Never touch the unit when barefoot.
BEFORE INSTALLING ADDITIONAL EXTERNAL DEVICES, READ THE
RELEVANT USER MANUALS.

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DELIVERY SET
Fan 1 pc.
Screws and dowels 4 pcs.
Plastic screwdriver (only for the models with a timer) 1 pc.
User’s manual 1 pc.
Packing box 1 pc.
BRIEF DESCRIPTION
Quiet(-Style) 100 DC is an axial fan for extract ventilation of small and medium-sized domestic spaces heated during the
cold season.
The fan fits 100 mm air ducts. The fan is equipped with a back valve to prevent back air flow during the fan standby.
OPERATION GUIDELINES
The fan is connected to 220-240 V 50/60 Hz or 12 V 50 Hz single-phase AC mains depending on the model and is designed
for continuous operation without disconnection from the electric mains. The air flow direction must match the arrow on
the fan casing.
Ingress protection rating against access to hazardous parts and water ingress is IP45.
The fan is suitable for operation at ambient temperatures ranging from +1 °C to + 40 °C.
The fan is rated as a Class II electrical appliance (220-240 V 50/60 Hz).

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DESIGNATION KEY
Quiet 100 DC T
Additional options:
V : cord-operated switch
Т : deactivation delay timer
ТН : humidity sensor and deactivation delay timer
ТР : motion sensor and deactivation delay timer
DC : direct current electric motor
Outlet duct diameter [mm]
Fan series
Quiet; Quiet-Style

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B
D
LL1
H
Dimensions [mm]
Ø D B H L L1
Quiet 100 DC 99 158 136 81 26
Quiet-Style 100 DC 200 50
B

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INSTALLATION AND SET-UP
The fan can be mounted to the ceiling or to a wall with air extraction into a ventilation shaft or a matching diameter round
air duct.
Mounting configurations with direct air discharge upwards are not allowed.
The fan installation steps are as follows:
1 — power off the electric mains and make sure that it is completely de-energised;
2 — run the power cable to the vent hole;
3 — remove the face panel of the fan. Then remove the lid which protects the circuit board;
4 — mark and drill fan mounting holes and mount the fan;
5 — connect the fan to the electric mains according to the connections diagram;
6 — replace the lid which protects the circuit board (Fig. 9) and the face panel on the fan casing;
7 — apply electric power to the fan.
Connection diagram terminal key:
L— phase (220-240 V only) S— external switch
N— neutral (220-240 V only) QF — automatic switch
LT (ST) — timer control circuit

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QF
L N
Quiet 100 DC fan installation

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QF
L N
Quiet-Style 100 DC fan installation

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THE TIMER BOARD IS UNDER MAINS VOLTAGE.
MAKE SURE THE FAN IS COMPLETELY DISCONNECTED FROM THE POWER MAINS BEFORE
ADJUSTING
FAN SETUP
The fan is set up by changing the DIP switch position.
To access the DIP switch take off the face panel and remove the rubber plug.
The fan is supplied with a special plastic screwdriver to toggle the DIP switch without damaging its components.
DO NOT USE A METAL SCREWDRIVER, KNIFE, ETC. FOR ADJUSTMENT
OPERATIONS NOT TO DAMAGE THE CIRCUIT BOARD
1
2
3
LT
L
SQF
N
L
N

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FAN OPTIONS
(S)Т — fans are equipped with a deactivation delay timer. The timer activates upon control voltage application to input
terminal LT by an external switch (e.g. indoor light switch). Upon control voltage removal the fan continues to operate for
the period of time set by means of a DIP switch.
VT models are equipped with a cord-operated switch.
ТР — fans are equipped with a motion sensor and a deactivation delay timer. The fan operates in one of the four modes set
by a DIP switch.
(S)ТН — fans are equipped with a humidity sensor and a deactivation delay timer. The fan operates in one of the four modes
set by a DIP switch.
VTH models are equipped with a cord-operated switch.
(V)Т
Operation mode Speed
Operation via an external
switch Continuous fan operation Low fan speed High fan speed
Deactivation delay timer
Timer off 5 minute delay 15 minute delay 30 minute delay

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(V)ТН, (V)ТР
Operation mode
Upon sensor actuation or
switch operation the fan
switches to low speed.
Upon sensor actuation or
switch operation the fan
switches to high speed.
The fan continuously
operates at low speed. Upon
sensor actuation or switch
operation the fan switches
to high speed.
The fan is disabled. Upon
sensor actuation the fan
switches to low speed.
Upon sensor actuation while
the fan is enabled the fan
switches to high speed.
Deactivation delay timer
Timer off
The delay for Quiet DC (V)ТР
is 30 seconds.
5 minute delay 15 minute delay 30 minute delay
Humidity threshold
60 % 70 % 80 % 90 %

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MAINTENANCE
The fan must undergo technical maintenance at least every 6 months.
Maintenance steps:
• power off the fan and make sure that it is completely de-energised;
• remove the face panel and clean the fan with a soft dry cloth or a brush;
• rinse the face panel with tap water;
• wipe the fan surfaces dry;
• replace the face panel onto the fan;
• re-connect the electric power.
WARNING! Avoid water dripping on the electric components.

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STORAGE AND TRANSPORTATION REGULATIONS
• Store the unit in the manufacturer’s original packaging box in a dry closed ventilated premise with temperature range
from +5 °C to +40 °C and relative humidity up to 70 %.
• Storage environment must not contain aggressive vapors and chemical mixtures provoking corrosion, insulation, and
sealing deformation.
• Use suitable hoist machinery for handling and storage operations to prevent possible damage to the unit.
• Follow the handling requirements applicable for the particular type of cargo.
• The unit can be carried in the original packaging by any mode of transport provided proper protection against precipitation
and mechanical damage. The unit must be transported only in the working position.
• Avoid sharp blows, scratches, or rough handling during loading and unloading.
• Prior to the initial power-up after transportation at low temperatures, allow the unit to warm up at operating temperature
for at least 3-4 hours.

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QF
L N
Quiet 100 DC technical maintenance

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QF
L N
Quiet-Style 100 DC technical maintenance

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MANUFACTURER’S WARRANTY
The product is in compliance with EU norms and standards on low voltage guidelines and electromagnetic compatibility.
We hereby declare that the product complies with the provisions of Electromagnetic Compatibility (EMC) Directive 2014/30/
EU of the European Parliament and of the Council, Low Voltage Directive (LVD) 2014/35/EU of the European Parliament and
of the Council and CE-marking Council Directive 93/68/EEC. This certificate is issued following test carried out on samples
of the product referred to above.
The manufacturer hereby warrants normal operation of the unit for 60 months after the retail sale date provided the user's
observance of the transportation, storage, installation, and operation regulations. Should any malfunctions occur in the
course of the unit operation through the Manufacturer's fault during the guaranteed period of operation, the user is entitled
to get all the faults eliminated by the manufacturer by means of warranty repair at the factory free of charge. The warranty
repair includes work specific to elimination of faults in the unit operation to ensure its intended use by the user within the
guaranteed period of operation. The faults are eliminated by means of replacement or repair of the unit components or a
specific part of such unit component.
The warranty repair does not include:
• routine technical maintenance
• unit installation/dismantling
• unit setup
To benefit from warranty repair, the user must provide the unit, the user's manual with the purchase date stamp, and the
payment paperwork certifying the purchase. The unit model must comply with the one stated in the user’s manual. Contact
the Seller for warranty service.
The manufacturer’s warranty does not apply to the following cases:
• User’s failure to submit the unit with the entire delivery package as stated in the user’s manual including submission
with missing component parts previously dismounted by the user.
• Mismatch of the unit model and the brand name with the information stated on the unit packaging and in the user's
manual.
• User’s failure to ensure timely technical maintenance of the unit.
• External damage to the unit casing (excluding external modifications as required for installation) and internal
components caused by the user.
• Redesign or engineering changes to the unit.