Vents Quiet-dMEV 100 DC User manual

AXIAL FAN
User’s manual
www.ventilation-system.com
Quiet-dMEV 100 DC
EN

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CONTENTS
Delivery set ............................................................................................................................................................................................................................................ 6
Brief description .................................................................................................................................................................................................................................. 6
Operating guidelines ....................................................................................................................................................................................................................... 6
Designation key................................................................................................................................................................................................................................... 7
Installation and set-up..................................................................................................................................................................................................................... 7
Fan options............................................................................................................................................................................................................................................. 8
Fan operation setup.......................................................................................................................................................................................................................... 8
Technical maintenance................................................................................................................................................................................................................... 12
Storage and transportation regulations............................................................................................................................................................................... 12
Manufacturer’s warranty................................................................................................................................................................................................................ 13

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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-dMEV 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.
The information in this user’s manual is 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.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means in any
information search system or translated into any language in any form without the prior written permission of the Company.
READ THE USER’S MANUAL CAREFULLY BEFORE PROCEEDING WITH INSTALLATION WORKS.
COMPLIANCE WITH THE MANUAL REQUIREMENTS ENSURES RELIABLE OPERATION AND LONG
SERVICE LIFE OF THE UNIT.
KEEP THE USER’S MANUAL AVAILABLE AS LONG AS YOU USE THE UNIT. YOU MAY NEED TO RE-
READ THE INFORMATION ON THE PRODUCT SERVICING.

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FOLLOW THE USER’S MANUAL REQUIREMENTS TO ENSURE DURABLE AND
TROUBLE-FREE OPERATION OF THE UNIT.
Disconnect the unit from 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 and maintenance. The present user’s manual should be carefully read
before beginning works.
• Single-phase power mains must comply with the acting local electrical norms and standards.
• Fixed electrical wiring must be equipped with an automatic circuit breaker.
• The unit must be connected to power mains through a QF automatic circuit breaker integrated
into the fixed wiring system. The gap between the circuit breaker contacts on all poles must be
not less than 3 mm. Check the unit for any visible damages of the impeller and the casing 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 the motor jam and noisy operation. Misuse of the unit and any unauthorised modifications are
not allowed.
• Take steps to prevent ingress of smoke, carbon monoxide, and other combustion products into
the room through open chimney flues or other fire-protection devices. Sufficient air supply must
be provided for proper combustion and exhaust of gases through the chimney of fuel burning
equipment to prevent back drafting. Transported air must not contain any dust or other solid

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impurities, 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 unit is allowed to be used by children aged from 8 years old and above and persons with
reduced physical, sensory, or mental capabilities or no experience and knowledge provided that
they have been given supervision or instruction regarding safe use of the unit and understand
the risks involved.
• Do not allow children to play with the unit.
THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED MUNICIPAL WASTE.

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DELIVERY SET
Fan 1 pc.
Screws and dowels 4 pcs.
Plastic screwdriver 1 pc.
User’s manual 1 pc.
Packing box 1 pc.
BRIEF DESCRIPTION
The unit described herein is an axial fan for exhaust ventilation of small to medium-sized premises heated during winter.
The fan is designed for connection to ø100 mm air ducts.
This fan model includes a back valve that prevents air back drafting when the fan is off.
OPERATING GUIDELINES
The fan is rated for connection to single-phase AC 220...240 V/50 Hz power mains.
Air flow direction in the system must correspond to the direction arrow on the fan casing.
Hazardous parts access and water ingress protection rating is IP45.
The fan is rated for operation at the ambient temperature ranging from +1 °C up to +45 °C.

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INSTALLATION AND SET-UP
The fan is designed for wall or ceiling mounting with direct air exhaust to the ventilation shaft or into the round air duct of
matching diameter.
The fan provides rated airflow (6, 8, 13 and 15 l/s) when the installation conditions are met according to one of the installation
charts (see Fig. 3-5) and the J1 jumper is selected correctly (see page 10). In the other case, the performance will differ from
the one stated in the User’s manual.
Fan installation sequence:
Step 1. Cut off power supply and make sure electricity has been turned off (Fig. 6).
Step 2. Lead the power cable to the ventilation hole (Fig. 7).
Step 3. Remove the front panel from the fan. Then remove the circuit board cover (Fig. 8).
Step 4. Mark and drill holes for mounting the fan and then install the fan (Fig. 9-11).
Step 5. Connect the fan to the electric mains according to the connections diagram (Fig. 16).
Step 6. Install the jumper located on the control board in the position corresponding to the mounting diagram.
Step 7. Cover the casing with a front panel (Fig. 12) and a decorative panel (Fig. 13).
Step 8. Supply power voltage to the fan (Fig. 14).
DESIGNATION KEY
Quiet-dMEV 100 DC X Х Х
Voltage
_: 220-240 V/50 Hz
12: safety extra low voltage of 12 V/50 Hz
Colour:
_: white
Extra options:
V: pull cord switch
T: turn-on and turn-off delay timer
TH: humidity sensor, turn-on and turn-off delay timer
DC: direct current electric motor
Outlet duct diameter [mm]

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FAN OPTIONS
Quiet-dMEV 100 DC (V) Т fans are equipped with a turn-on and turn-off delay timer. The unit operates at the set constant
speed. VT models are equipped with a cord-operated switch.
The fan switches to the intensive mode 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 in the intensive mode for the period of time
set by means of a DIP switch.
Quiet-dMEV 100 DC 12 fan is rated for connection to safe 12 V/50 Hz power mains.
Quiet-dMEV 100 DC (V) TH fans are equipped with a turn-off and turn-on delay timer when the humidity level is exceeded.
The fan switches to the intensive mode 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 in the intensive mode for the period of time
set by means of a DIP switch. The V (TH) models are equipped with a cord-operated switch.
FAN OPERATION SETUP
THE TIMER CIRCUIT IS LIVE.
MAKE SURE THE FAN IS DISCONNECTED FROM POWER SUPPLY.
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 (Fig. 15).
The fan is supplied with a special plastic screwdriver to toggle the DIP switch without damaging its components.
Terminal designations on wiring diagrams
L— phase
N— 0
S — external switch
QF — circuit breaker

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DO NOT USE A METAL SCREWDRIVER, KNIFE, ETC. FOR ADJUSTMENT
OPERATIONS NOT TO DAMAGE THE CIRCUIT BOARD.
Jumper 2 (J2)
Jumper 1(J1)
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
Indicator
DIP switches

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Speed setting (Trickle)
Speed 1 Speed 2 Speed 3 Speed 4
ON DIP
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
0 l/s 6 l/s 8 l/s 13 l/s
Intensive mode (Boost)
ON DIP
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
15 l/s max
Turn-o delay timer
ON DIP
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
2 minutes 5 minutes 15 minutes 30 minutes
Humidity mode
ON DIP
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
by threshold intellectual*
* — This mode provides for changing the humidity threshold and fan speed selection in automatic mode, independently choosing the
optimal threshold for the room in which the fan is located. The choice of the fan operation algorithm is determined by analysing the
statistical data of the humidity level in the room.

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Humidity threshold
ON DIP
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
60 % 70 % 80 % 90 %
Selecting the installation diagram – Jumper 1 (J1) (see Fig. 3-5)
Diagram 1 Diagram 2 Diagram 3
Turn-on delay timer – Jumper 2(J2)
0 s 60 s
The indicator displays the operating mode of the fan (see Fig. 17-18)
Glowing solid green The fan runs at the Trickle speed
Blinking green The fan runs at the Trickle speed, the turn-on delay timer is
activated for switching to Boost speed
Glowing solid red The fan is running at the Boost speed because of the
humidity sensor triggering or pull cord switch closing

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Blinking red The fan is running at the Boost speed because of the circuit
breaker closing (LT line closing)
Blinking alternately red and green The fan is running at the Boost speed, the turn-off delay
timer is activated for switching to Trickle speed
TECHNICAL MAINTENANCE
The fan maintenance periodicity is at least once per 6 months.
Maintenance steps:
• Disconnect the fan from power supply and make sure electricity has been turned off (Fig. 19).
• Remove the front and the decorative panels, wipe the fan with a dry cloth or a brush (Fig. 20).
• Clean the front panel under running water (Fig. 21).
• Wipe the fan surfaces dry.
• Cover the fan with the front panel.
• Connect power supply to the fan (Fig. 22).
WARNING! Do not allow water or liquid come into contact with electric components!
• 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 vapours 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 room temperature for
at least 3-4 hours.
STORAGE AND TRANSPORTATION REGULATIONS

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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 Council Directive 2014/30/EU, Low
Voltage Directive 2014/35/EU and CE-marking 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.
MANUFACTURER’S WARRANTY

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• Replacement and use of any assemblies, parts and components not approved by the manufacturer.
• Unit misuse.
• Violation of the unit installation regulations by the user.
• Violation of the unit control regulations by the user.
• Unit connection to power mains with a voltage different from the one stated in the user's manual.
• Unit breakdown due to voltage surges in power mains.
• Discretionary repair of the unit by the user.
• Unit repair by any persons without the manufacturer’s authorization.
• Expiration of the unit warranty period.
• Violation of the unit transportation regulations by the user.
• Violation of the unit storage regulations by the user.
• Wrongful actions against the unit committed by third parties.
• Unit breakdown due to circumstances of insuperable force (fire, flood, earthquake, war, hostilities of any kind, blockades).
• Missing seals if provided by the user’s manual.
• Failure to submit the user’s manual with the unit purchase date stamp.
• Missing payment paperwork certifying the unit purchase.
FOLLOWING THE REGULATIONS STIPULATED HEREIN WILL ENSURE A LONG AND TROUBLE-FREE
OPERATION OF THE UNIT.
USER’S WARRANTY CLAIMS SHALL BE SUBJECT TO REVIEW ONLY UPON PRESENTATION OF THE
UNIT, THE PAYMENT DOCUMENT AND THE USER’S MANUAL WITH THE PURCHASE DATE STAMP.

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158
ø99
108
81
136
1.
2.

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3. 4. 5.
0,3 m
90°
1 m
1 m
90°
1 m
1 m
1 m
(Top view)
Diagram 1 Diagram 2 Diagram 3

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QF
L N
6. 7. 8.
9. 10. 11.
12. 13. 14.

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15.
1
2
QF
3
L
N
S
1
2
QF
3
L
N
S
or
16.

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Operation at Trickle speed
Fan runs at Boost speed
S switch to ON
Turn-on delay
timer activation
S switch to OFF
Turn-off delay
timer activation
Pull cord switch to ON
Fan runs at Boost speed
Pull cord switch to OFF
Humidity exceeds
set point
Fan runs at Boost speed
Humidity is below
set point
Turn-off delay
timer activation
Quiet-dMEV 100 DC TH , VTH
Operation at Trickle speed
Fan runs at Boost speed
S switch to ON
Turn-on delay
timer activation
S switch to OFF
Turn-off delay
timer activation
Pull cord switch to ON
Fan runs at
Boost speed
Pull cord switch to OFF
Quiet-dMEV 100 DC T, VT
17.
18.

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QF
L N
19. 20.
21. 22.