Vents D Series User manual

www.ventilation-system.com
D
D1
AXIAL FAN
User’s manual
EN

2
EN
CONTENTS
Delivery set............................................................................................................................................................................................................................................. 7
Brief description .................................................................................................................................................................................................................................. 7
Operation guidelines ....................................................................................................................................................................................................................... 7
Designation key................................................................................................................................................................................................................................... 8
Mounting................................................................................................................................................................................................................................................. 9
Electronic system operation algorithm................................................................................................................................................................................ 11
Technical maintenance................................................................................................................................................................................................................... 12
Troubleshooting.................................................................................................................................................................................................................................. 12
Storage and transportation regulations............................................................................................................................................................................... 13
Manufacturer’s warranty................................................................................................................................................................................................................ 14
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 D/D1
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.

3
EN
PLEASE READ THE USER’S MANUAL CAREFULLY PRIOR TO INSTALLING, CONNECTION TO POWER
MAINS AND OPERATING THE UNIT.
THE MANUFACTURING COMPANY SHALL NOT BE RESPONSIBLE FOR DAMAGE TO HEALTH AND
PROPERTY OF THE CUSTOMER CAUSED BY THE CUSTOMER’S VIOLATING THE USER’S MANUAL.
FOLLOW THE USER’S MANUAL REQUIREMENTS TO ENSURE DURABLE OPERATION OF THE UNIT, ITS
MECHANICAL AND ELECTRICAL RELIABILITY.
KEEP THIS USER’S MANUAL.
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!

4
EN
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,
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.

5
EN
Never touch the unit with wet or damp hands.
Never touch the unit when barefoot.
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.
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.
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.

6
EN
THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE.
Ensure that the unit is switched off from the supply mains before
removing the guard.

7
EN
BRIEF DESCRIPTION
The unit described herein is an axial fan for exhaust ventilation of small and medium-sized utility spaces.
The fan is designed for connection to Ø 100, 120, 125 and 150 mm air ducts, depending on the model.
OPERATION GUIDELINES
The fan is rated for connection to single-phase AC power mains.
Power mains parameters are stated on the unit packaging and/or the label on the unit casing.
Hazardous parts access and water ingress protection rating: IP34
WARNING! IP is indicated for an assembled unit.
The fan is rated for operation at the ambient temperature ranging from +1 °C up to +40 °C.
WARNING! Do not operate the fan outside the specied temperature range.
The unit is rated as the Class II 120 V, 60 Hz.
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.

8
EN
DESIGNATION KEY
100 D V K L
Motor modications:
_: basic motor
L: motor on ball bearings
Turbo: high-powered motor
Modications:
K: non-return valve KO
K1: non-return valve KO1
Basic options:
V: pull cord switch
T: turn-off delay timer
VT: turn-off delay timer and pull cord switch
TH: humidity sensor
VTH: pull cord switch and humidity sensor
Fan series
D/D1
Outlet duct diameter [mm]
100/120/125/150

9
EN
MOUNTING
The fan is designed for wall (with the motors on ball and slide bearings) or ceiling (with the motors on ball bearings only, L
option) mounting and can be used for direct outdoor air exhaust through a round duct or a duct system.
In case of installation through a duct system, select the duct cross section in accordance with the fan size (Fig. 1).
1. When installing the fan with direct air discharge outside through the wall, be sure to install a ventilation grille with louvre
shutters or a ventilation hood on the outside to prevent rainfall, snow, leaves, branches, etc. from entering the duct.
To reduce the risk of condensate forming in the duct, the space between the hole in the wall and the duct must be insulated.
Install the air duct with the minimum slope of 1...2° downwards to the outer wall side for condensate removal (Fig 2).
2. The duct system should not exceed 5 meters and have more than two bends.
3. During ceiling installation, vertical air discharge upwards is not allowed even if there is a protective outer hood on the roof.
For ceiling mounting and air discharge to the roof, the duct system must include a condensate drain (Fig. 3).
A condensate drain is not included in the delivery set of the fan and can be ordered separately.
Check the fan for any visible damages of the impeller, the casing and the grille before starting installation. The casing internals
must be free of any foreign objects which 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 excessive noise.
Mount the fan on the wall or ceiling using four dowels with screws (included in the delivery set).
Dowels and screws are designed for concrete and brick walls.
If the walls are made of the other material (drywall, wood,etc.), use the fasteners appropriate for these materials to fasten the
fan (not supplied with the fan and must be purchased separately).
WARNING! When the fan is equipped with a non-return valve, operation of the fan without this valve is prohibited.

10
EN
The fan mounting sequence is shown in Fig. 4-11.
The fan wiring diagrams are shown in Fig. 12-14.
Terminal designations on the wiring diagrams
L: line S: external switch
N: neutral QF: double pole circuit breaker
LT: timer control line
WARNING! The power cable may only be laid through the hole in the casing provided by the manufacturer.
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.
1
2
2250
2250
750
750
600
600
R 600
1
2
3
1
1
3
3
22
2
2
1
2
2
The unit with a protection rating against access to hazardous
parts and water ingress IP34 is allowed to be installed in zone
2, according to IEC 60364-7-701:2019.
min. 2.3 m
CAUTION! The unit must be installed at a distance of
at least 2.3 m from the oor.

11
EN
ELECTRONIC SYSTEM OPERATION ALGORITHM
The T model fans equipped with a timer are activated by control voltage application to input terminal LT by an external
switch S (e.g. indoor light switch). After the control voltage is off, the fan continues to operate within the set time period
adjustable from 2 to 30 minutes by the timer. For the VT model, the fan is turned on/off with an internal cord switch.
The fan with a timer and a humidity sensor (TH) — the fan starts after the control voltage is supplied to the input
terminal LT or if indoor humidity level Hexceeds the set point adjustable from ~60 % to ~90 %. After the control voltage is
off or the humidity level Hhas decreased, the fan will keep running within the time, set by the turn-off delay 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, adjustable from 2 up to 30 minutes.
— to adjust the humidity set point, turn the control knob Hclockwise to increase and counter-clockwise to decrease the
humidity sensor set point, adjustable from 60 % up to 90 %.
The fan delivery set includes a specially designed plastic
screwdriver for fan settings adjustments.
Use it to change the turn-on and turn-off delay time and
the humidity set point.
T
o
2 min 30 min
H
60% 90%
for TH/VTH
for T/TH/VT/VTH
DO NOT USE A METAL SCREWDRIVER, KNIFE, ETC. FOR ADJUSTMENT
OPERATIONS NOT TO DAMAGE THE CIRCUIT BOARD

12
EN
TROUBLESHOOTING
Problem Possible reason 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.
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:
• disconnect the fan from power supply and take steps to avoid unauthorized power supply connection (Fig. 15);
• remove decorative and front panels and clean the fan with a soft dry cloth or a brush (Fig. 16);
• wash the front panel under running water (Fig. 17);
• wipe the fan surfaces dry;
• attach the front panel to the fan;
• connect power supply (Fig. 18).
WARNING! Do not allow water or liquid come into contact with electric components!

13
EN
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.

14
EN
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.

15
EN
• 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.

16
EN
B
ø D
L
10...20
1.
2.
D [mm] B [mm] L [mm]
100 D 100 150 109
100 D1 100 150 95
120 D 117 176 107
125 D 125 176 113
125 D1 125 176 96
150 D 150 205 132
3.

17
EN
QF
L N
4. 5. 6.
7. 8.
9. 10. 11.

18
EN
QF
L
N
SL
N
QF
L
N
L
N
Contact of the S switch
or the pull cord switch is
OPENED
Fan runs
Contact of the S switch
or the pull cord switch is
CLOSED
Fan does not run
L
LT
S
N
L
N
QF
L
LT
N
L
N
QF
Fan does not run
Contact of the S switch
or the pull cord switch is
CLOSED
Fan runs
Contact of the S switch
or the pull cord switch is
OPENED
Activation of turn-off
delay timer (2-30 minutes)
12.
13.
100/120/125/150 D(1)
100/120/125/150 D(1) V
100/120/125/150 D(1) Т
100/120/125/150 D(1) VТ

19
EN
L
LT
S
N
L
N
QF
L
LT
N
L
N
QF
Fan does not run
Humidity exceeds set point
Yes
No
Fan runs
Humidity is below set point
Activation of turn-off
delay timer (2-30 minutes)
Contact of the S switch
or the pull cord switch is
CLOSED
Fan runs
Contact of the S switch
or the pull cord switch is
OPENED
Humidity exceeds set point
No
Yes
14.
100/120/125/150 D(1) ТН 100/120/125/150 D(1) VТН

20
EN
QF
L N
15. 16.
17. 18.