Vents VUT 1500 PB EC User manual

VUT 1500 PB EC
VUT 2500 PB EC
VUT 3500 PB EC
Air handling unit
USER’S MANUAL

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VUT 1500/2500/3500 PB EC
www.ventilation-system.com
CONTENTS
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
VUT 1500/2500/3500 PB EC 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.
Safety requirements..................................................................................................................................................................... 3
Purpose................................................................................................................................................................................................ 5
Delivery set........................................................................................................................................................................................ 5
Designation key.............................................................................................................................................................................. 5
Technical data.................................................................................................................................................................................. 6
Unit design........................................................................................................................................................................................ 7
Mounting and set-up.................................................................................................................................................................. 9
Technical maintenance.............................................................................................................................................................. 11
Storage and transportation regulations.......................................................................................................................... 12
Manufacturer’s warranty........................................................................................................................................................... 13
Certificate of acceptance.......................................................................................................................................................... 15
Seller information.......................................................................................................................................................................... 15
Installation certificate.................................................................................................................................................................. 15
Warranty card................................................................................................................................................................................... 15

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SAFETY REQUIREMENTS
• Please read the user’s manual carefully prior to installing and operating 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.
• The warnings contained in the user’s manual must be considered most seriously since they
contain vital personal safety information.
• Failure to follow the rules and safety precautions noted in this user’s manual may result in an
injury or unit damage.
• After a careful reading of the manual, keep it for the entire service life of the unit.
• While transferring the unit control, the user’s manual must be turned over to the receiving
operator.
UNIT INSTALLATION AND OPERATION SAFETY PRECAUTIONS
• Disconnect the unit from
power mains prior to any
installation operations.
• Unpack the unit with care.
• The unit must be grounded!
• While installing the unit, follow
the safety regulations specific
to the use of electric tools.
• Do not change the power
cable length at your own
discretion.
• Do not bend the power cable.
• Avoid damaging the power
cable.
• Do not put any foreign objects
on the power cable.
• Do not lay the power cable of
the unit in close proximity to
heating equipment.
• Do not use damaged
equipment or cables when
connecting the unit to power
mains.
• Do not operate the unit
outside the temperature range
stated in the user’s manual.
• Do not operate the unit
in aggressive or explosive
environments.
• Do not touch the unit controls
with wet hands.
• Do not carry out the
installation and maintenance
operations with wet hands.
• Do not wash the unit with
water.
• Protect the electric parts of the
unit against ingress of water.

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VUT 1500/2500/3500 PB EC
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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.
• Do not allow children to
operate the unit.
• The unit is allowed to be used
by children aged from 8 years
oldand 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.
• Disconnect the unit from
power mains prior to any
technical maintenance.
• Do not store any explosive or
highly flammable substances
in close proximity to the unit.
• When the unit generates
unusual sounds, odour, or
emits smoke, disconnect it
from power supply and contact
the Seller.
• Do not open the unit during
operation.
• Do not direct the air flow
produced by the unit towards
open flame or ignition sources.
• Do not block the air duct when
the unit is switched on.
• In case of continuous
operation of the unit,
periodically check the security
of mounting.
• Do not sit on the unit and
avoid placing foreign objects
on it.
• Use the unit only for its
intended purpose.

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PURPOSE
DELIVERY SET
DESIGNATION KEY
THE UNIT SHOULD NOT BE OPERATED BY CHILDREN OR PERSONS WITH REDUCED
PHYSICAL, MENTAL, OR SENSORY CAPACITIES, OR THOSE WITHOUT THE APPROPRIATE
TRAINING.
THE UNIT MUST BE INSTALLED AND CONNECTED ONLY BY PROPERLY QUALIFIED
PERSONNEL AFTER THE APPROPRIATE BRIEFING.
THE CHOICE OF UNIT INSTALLATION LOCATION MUST PREVENT UNAUTHORIZED
ACCESS BY UNATTENDED CHILDREN.
Name Number
Air handling unit 1
User's manual 1
Technical data sheet 1
Wiring diagram 1
Automation system user’s manual 1
Packing box 1
The heat recovery air handling unit is designed for installation in centralized mechanical ventilation systems.
It is rated for continuous operation.
Transported air must not contain any flammable or explosive mixtures, evaporation of chemicals, sticky substances, fibrous materials,
coarse dust, soot and oil particles or environments favourable for the formation of hazardous substances (toxic substances, dust,
pathogenic germs).
The corrosion resistance of the unit is class C4 according to ISO 12944.
VUT X P B EC R**
Automation type
Service side
L – left
R – right
Motor type
EC – electronically commutated
Additional components
B – bypass
Spigot orientation
P - suspended mounting, horizontal spigot
orientation.
Rated air ow [m3/h]
Unit type

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VUT 1500/2500/3500 PB EC
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TECHNICAL DATA
OVERALL DIMENSIONS OF THE UNIT
A
B
A3 A4
A1
A1
A2 A2
Ø D
Ø D2
B1
B2
B3
Model A A1 A2 A3 A4 B B1 B2 B3 D D2
VUT 1500 PB EC
600 676 713
1340
1610 350
520 1726 1700
9 16
VUT 2500 PB EC
VUT 3500 PB EC 1350 670 1960 1932
See the complete list of the technical data for the unit in the technical data sheet included in the delivery set.
The unit is designed for indoor or sheltered use. The installation conditions must prevent ingress of atmospheric precipitations and direct
solar radiation at the ambient temperatures from -35 °C up to +50 °C.
At sub-zero ambient temperatures, frost protection must be provided for the drainage and pipelines connected to the unit.
The heat medium temperature in water heaters (if available) must be sufficient to prevent its freezing.
Hazardous parts access and water ingress protection rating:
• IP54 for the motors
• IP40 for the assembled unit connected to the air ducts
• IP00 for the unit not connected to the air ducts
The unit design is constantly being improved, thus some models may be slightly different from those described in this manual.

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UNIT DESIGN
1 1
4
5
6
7
8
2
4
3
1 – drain pipe
2 – supply fan
3 – extract filter
4 – heat exchanger
5 – extract fan
6 – bypass damper
7 – supply filter
8 – control unit
Service panels
Removable service panels are located on the unit casing for accessing the unit assemblies.
1
5 5 6
6
2 3 4
1 – panel for access to the filter (located on the service side)
2 – panel for access to the heat exchanger and the bypass damper (located on the service side)
3 – panel for access to the control unit and the terminal block (located on the service side)
4 – panel for access to the filter (located on the service side)
5 – panels for access to the fans (located at the bottom of the unit)
6 – panels for access to the filters (located at the bottom of the unit)
Panels 1-5 are fixed with screws. Panels 6 are secured with thumbscrews.

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VUT 1500/2500/3500 PB EC
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Additional equipment
(purchased at the request of the customer)
VUT 1500 PB EC VUT 2500 PB EC VUT 3500 PB EC
Control panel
А22
А22 WiFi
А25
Electric heater
HE 600x350-5.1-1 A21
HE 600x350-9.0-3 A21
HE 600x350-12.0-3 A21
DX cooler CDX 600х350-3
Water cooler CW 600х350-3
Water heater HW 600x350-2 A21
Air damper RRV P600x350
G4 filter SF 196x384x40 SF 253x603x48
Air damper actuator TF 230
Three position ball valve with an
electric actuator
Belimo R3020-4-B1+
LR24A-SR
Belimo R3020-
6P3-B1+ LR24A-SR
Liquid mixing kit for the water heater USVK 3/4-4 USVK 3/4-6
Differential pressure switch DTV 500
Flexible connector VVG AV 600x350
Silencer SR 600x350

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MOUNTING AND SETUP
ALL OPERATIONS DESCRIBED IN THIS USER’S MANUAL MUST BE PERFORMED BY
QUALIFIED PERSONNEL ONLY, PROPERLY TRAINED AND QUALIFIED TO INSTALL AND
MAINTAIN VENTILATION EQUIPMENT.
DO NOT ATTEMPT TO INSTALL THE PRODUCT YOURSELF.
IT IS UNSAFE AND IMPOSSIBLE WITHOUT SPECIAL KNOWLEDGE.
The units are manufactured in left and right versions, i.e. they can be serviced from the right or left side. Choosing the right arrangement
can improve the ease of installation, shorten the length of the ducts and reduce the number of air duct bends.
Left-handed modication (top view) Right-handed modication (top view)
Supply air
Exhaust air
Intake air
Extract air
Supply air
Exhaust air
Intake air Extract air
While mounting the unit provide enough access for maintenance or repair work. The minimum recommended clearances between the
unit and the adjoining walls are given in the figure below.
B
B
650
350
To attain the best performance of the unit and to minimise turbulence-induced air pressure losses, connect the straight air duct section
to the spigots on both sides of the unit while mounting.
Minimum straight air duct length:
• equal to 1 air duct diameter on the intake side
• equal to 3 air duct diameters on outlet side
If the air ducts are too short or not connected, protect the unit parts from ingress of foreign objects. To prevent uncontrollable access to
the fan, the spigots may be covered with a protecting grille or other protecting device with mesh width not more than 12.5 mm.
Fasteners for fan mounting are not included in the delivery set and should be ordered separately.
While choosing fasteners consider the material of the mounting surface as well as the weigh of the unit.
Fasteners for installation should be selected by a qualified technician.
When installing the unit, it is necessary to ensure its slope of at least 3° towards the drainage pipes.

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VUT 1500/2500/3500 PB EC
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Recommended installation diagram
1
2
3
3
4
5
min 3°
1 – threaded rod
2 – nut
3 – washer
4 – vibration absorbing rubber
5 – nut and lock nut
Condensate drainage
The unit is equipped with drain spigots for condensate drainage outside the casing. U-traps must be connected to the drain spigots.
The dimensions of the U-trap are selected depending on the pressure in the section, shown in the table.
H
h
Fan full pressure [Pa] Dimension H
[mm]
Dimension h
[mm]
<600 100 50
600-1000 140 70
1000-1400 190 95
1400-1800 240 120
1800-2200 290 145
2200-2600 340 170
Connect the spigot, U-trap and the sewage system with metal, plastic or rubber connecting pipes.
min 3°
1
2
3
2
4
1 – drain spigot
2 – connecting pipe
3 – U-trap
4 – sewage system
Make sure that the water flows into the sewage system before starting operation. Fill up the U-trap with water before using it.

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TECHNICAL MAINTENANCE
The unit operation requires regular inspection, dry cleaning of inner components, check-up and replacement of air filters in case of filter
clogging.
3-6 months after commissioning of the unit it must be inspected by a service expert for planned preventive maintenance of the unit.
Subsequent maintenance should be carried out at least once every 6-12 months. The frequency of maintenance is determined by the
service technician, depending on the operating conditions of the unit. Dust deposits on the inner parts of the unit, especially in the
electric heater, may lead to unpleasant odours. This is not a malfunction. Clean the unit to eliminate odours.
Access to lters through side service panels
Remove the service panels.
Unscrew the two thumbscrews securing the retaining
plate.
Remove the filter elements.
Access to lters through lower service panels
Remove the service panels. Remove the filter elements.
OPEN THE UNIT FOR INSPECTION AND SERVICE AT LEAST TWO MINUTES AFTER
COMPLETE DEENERGIZATION OF THE UNIT.
FANS MAY CONTINUE ROTATING.
IIN CASE OF ANY ABNORMAL NOISE, SMELL AND COMPONENT DEFORMATION,
IMMEDIATELY CUT OFF POWER SUPPLY TO THE UNIT AND CONTACT A SERVICE
PROVIDER OR THE UNIT SELLER.

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VUT 1500/2500/3500 PB EC
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Remove the service panel to access the heat exchanger. Remove the heat exchanger. Disconnect the connector from the bypass damper
actuator. Remove the bypass unit, then remove the second heat exchanger.
STORAGE AND TRANSPORTATION REGULATIONS
• Store the unit in the manufacturer’s original packaging box in a dry closed ventilated premise with temperature range +5...+40 ˚С
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 manufacturer hereby warrants normal operation of the unit for 24 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.
WARNING! The warranty does not apply to units with a water heater that are not equipped with air ow regulators with an
electric actuator.
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.
• 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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VUT 1500/2500/3500 PB EC
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CERTIFICATE OF ACCEPTANCE
Unit Type Air handling unit
Model VUT________PB EC
Serial Number
Manufacture Date
Quality Inspector’s
Stamp
SELLER INFORMATION
Seller
Seller’s Stamp
Address
Phone Number
E-mail
Purchase Date
This is to certify acceptance of the complete unit delivery with the user’s manual. The warranty terms are
acknowledged and accepted.
Customer’s Signature
INSTALLATION CERTIFICATE
The VUT________PB EC unit is installed pursuant to the requirements stated in the present user's
manual.
Installation Stamp
Company name
Address
Phone Number
Installation
Technician’s Full Name
Installation Date: Signature:
The unit has been installed in accordance with the provisions of all the applicable local and national construction,
electrical and technical codes and standards. The unit operates normally as intended by the manufacturer.
Signature:
WARRANTY CARD
Unit Type Air handling unit
Seller’s Stamp
Model VUT________PB EC
Serial Number
Manufacture Date
Purchase Date
Warranty Period
Seller

V108-1EN-01