Vents VKO Series User manual

www.ventilation-system.com
VKO
VKO1
AXIAL FAN
User’s manual
EN

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CONTENTS
Delivery set............................................................................................................................................................................................................................................. 7
Brief description .................................................................................................................................................................................................................................. 7
Operation guidelines ....................................................................................................................................................................................................................... 7
Designation key................................................................................................................................................................................................................................... 8
Installation............................................................................................................................................................................................................................................... 9
Electronics operation algorithm ............................................................................................................................................................................................... 10
Technical maintenance................................................................................................................................................................................................................... 11
Troubleshooting.................................................................................................................................................................................................................................. 11
Storage and transportation regulations............................................................................................................................................................................... 12
Manufacturer’s warranty................................................................................................................................................................................................................ 13
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 VKO
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.

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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 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.
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
REREAD THE INFORMATION ON THE PRODUCT SERVICING.

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• Fixed electrical wiring must be equipped with an automatic circuit
breaker.
• The unit must be connected to power mains through a double pole
circuit breaker integrated into the fixed wiring system with opening
of contacts at all poles. The gap between the circuit breaker contacts
at all poles must be not less than 3 mm.
• 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 unauthorized modifications are not
allowed.
• Do not expose the device to adverse atmospheric agents (rain, sun,
etc.).
• Take steps to prevent ingress of smoke, carbon monoxide, and other
combustion products into the room through open chimney flues or

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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 impurities,
sticky substances, or fibrous materials.
• Do not use the unit in a hazardous or explosive environment
containing spirits, gasoline, insecticides, etc.
• For effective functioning of the unit, it is necessary to ensure an
appropriate fresh air supply into the room. 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 information in this user’s manual was correct at the time of the

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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.
WARNING! Similar to the use of any other household electrical
appliances when operating this fan, the following basic rules
must be followed:
• Never touch the fan with wet or damp hands.
• Never touch the fan when barefoot.
THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE.

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DELIVERY SET
Fan – 1 pc.
Screws with dowels (only for the models with a mounting bracket) – 4 pcs.
Plastic screwdriver (only for the models with a timer) – 1 pc.
Seal ring (only for the VKO1 model) – 2 pcs.
User’s manual – 1 pc.
Packing box – 1 pc.
BRIEF DESCRIPTION
The product is a duct axial fan for supply or exhaust ventilation of small and medium-sized premises.
The fan is designed for connection to Ø100, 125, or 150 mm air ducts depending on the model.
OPERATION GUIDELINES
The fan is rated for connection to single-phase AC power mains. Power supply parameters are stated on the unit packaging
and/or the label on the unit casing. Ingress protection rating against access to hazardous parts and water ingress is IPX4.
WARNING! IP is shown for the mounted product.
The fan is rated for operation at ambient temperatures ranging from +1 °C to +40 °C.
WARNING! Do not operate the fan outside the specied temperature range.
The unit is rated as a Class II (220-240 V, 50 Hz) or Class III (12 V/50 Hz) electrical appliance and requires no grounding.

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DESIGNATION KEY
100 Х X Х X
Motor modication
L: motor on ball bearings
Turbo: high-powered motor
Q: low-noise motor
12: motor with 12 V/50 Hz rated voltage
press: motor, allowing to increase pressure created by the fan
Basic options
T: turn-off delay timer
Design
K: mounting bracket
Fan series
VKO
VKO1
Outlet spigot diameter [mm]
100/125/150

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INSTALLATION
The fan can be installed vertically (only with motors on ball bearings, option L) or horizontally in a round duct (Fig. 2) of
appropriate diameter (Fig. 1).
Fan installation sequence:
• Disconnect power supply (Fig. 3).
• Mark and drill holes for fastening the mounting bracket of the fan and then install the fan (Fig. 4-6).
• Remove the terminal compartment cover and the cable clamp from the fan (Fig. 7).
• Connect the fan to power mains, screw the cable clamp into place, adjust the timer time if necessary (Fig. 8-9).
• Install the terminal compartment cover on the fan casing (Fig. 9).
• Connect the air ducts of the corresponding diameter on both sides of the fan (Fig. 10).
• Apply power to the fan (Fig. 11).
Installation, connection, adjustment and maintenance of fans without a bracket is carried out similarly, with the exception of
paragraph 2 when you just need to insert the fan into the round duct.
The fan mounting sequence is shown in Fig. 3-11.
The fan wiring diagrams are shown in Fig. 12.
Terminal designations on the wiring diagrams:
L— line/~12 V S— external switch
N— neutral/~12 V QF— double-pole circuit breaker
LT— timer control line
WARNING! The fans rated for 12 V power voltage (stated on the packing box and on the fan casing) connect to
12 V power mains only!
WARNING! The power cable may only be laid through the hole in the casing provided by the manufacturer (Fig. 13).
Laying the power cable through a manually drilled hole will not be the liability of the manufacturer and will void
the warranty. The wires must be stripped of insulation by a maximum of 8 mm.
After installation, pass this User’s manual to the end user for reading.

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ELECTRONICS OPERATION ALGORITHM
The fan with the T timer activates upon control voltage application to the LT input terminal by the Sexternal switch (e.g.
indoor light switch). After the control voltage is off, the fan continues to operate within the time set by the timer ranging
from 2 to 30 minutes.
— To adjust the fan turn-off delay time, turn the control knob To clockwise to increase and counter-clockwise to
decrease the turn-off delay time respectively, adjustable from 2 up to 30 minutes.
+
-
2min 30min
T
The fan delivery set includes a specially designed plastic
screwdriver for fan settings adjustments.
Use it to change the fan turn-off delay time.
DO NOT USE A METAL SCREWDRIVER, KNIFE, ETC. FOR ADJUSTMENT
OPERATIONS NOT TO DAMAGE THE CIRCUIT BOARD.

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TROUBLESHOOTING
Problem Possible reasons Troubleshooting
When the unit is connected to power
mains, the fan does not rotate and
does not respond to any controls.
No power supply.
Make sure the power supply line
is connected correctly, otherwise
troubleshoot the connection error.
Internal connection fault. Contact the Seller.
Low air flow. The ventilation system is clogged. Clean the ventilation system.
Increased noise, vibration.
The impeller is clogged. Clean the impeller.
The fan is not secured well or is not
mounted properly. Troubleshoot the installation error.
The ventilation system is clogged. Clean the ventilation system.
TECHNICAL MAINTENANCE
The fan maintenance periodicity is at least once per 6 months. Maintenance steps:
• Connect power supply to the fan (Fig. 13).
• Remove the air ducts (Fig. 14).
• To clean the fan, use a soft cloth and a brush wetted in a mild detergent solution.
• Wipe the fan surfaces dry.
• Connect air ducts to the fan.
• Connect power supply to the fan (Fig. 16).
WARNING! Do not allow water or liquid come into contact with 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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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

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components caused by the user.
• Redesign or engineering changes to the unit.
• 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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B
ø D ø d
b
1.
2.
D [mm]d [mm]B [mm]b [mm]
100 VKO 104 100 85 91
100 VKO1 100 100 100 110
125 VKO 130 125 85 92
125 VKO1 125 125 90 118
150 VKO 154 150 108 111
150 VKO1 150 150 100 128
Only with an L option

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QF
L N
3. 4. 5.
6. 7. 8.
9. 10. 11.

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L(~*)
N(~*)
S
QF
L(~*)
N(~*)
QF
N
N(~*)
L
L(~*)
LT
S
100/125/150 VKO/VKO1 100/125/150 VKO1 T
12.

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QF
L N
13. 14.
15. 16.

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