Vents DVUT 1200 HB EC User manual

DVUT 1200 HB EC
DVUT 1200 HBE EC
DVUT 1200 HBE2 EC
Single-room air handling unit
USER'S MANUAL

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CONTENTS
Safety requirements..................................................................................................................................................................... 3
Purpose................................................................................................................................................................................................ 5
Technical data.................................................................................................................................................................................. 6
Connection to power mains .................................................................................................................................................. 15
Technical maintenance.............................................................................................................................................................. 17
Troubleshooting............................................................................................................................................................................. 18
Storage and transportation regulations.......................................................................................................................... 19
Manufacturer’s warranty........................................................................................................................................................... 20
Certificate of acceptance.......................................................................................................................................................... 23
Seller information.......................................................................................................................................................................... 23
Installation certificate.................................................................................................................................................................. 23
Warranty card................................................................................................................................................................................... 23

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This user’s manual is a main operating document intended for technical, maintenance, and operating staff.
Themanualcontainsinformationaboutpurpose,technicaldetails,operatingprinciple,design,andinstallationofthe DVUT 1200HB(E/E2)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
• 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.
• 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

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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.
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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DVUT 1200 HB(E/E2) EC
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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
Unit section 2
L-shaped bend 2
Set of fixing screws 1
Decorative panel 1
User’s manual 1
Control panel (for units with A22 and A25 automation) 1
Packing box 2
DVUT 1200 G B E DN EC LA21
Control
A21, A22, A25
Modication
L – left-hand
R – right-hand
Motor type
EC – electronically commutated
Drain pump
_ – without a drain pump
DN – equipped with a drain pump
Electric heaters
_ – without a heater
E – equipped with a preheater
E2 – equipped with a preheater and a reheater
Bypass damper
B – equipped with a bypass damper
Mounting features
H – floor-mounted with horizontal spigots
Rated air ow [m3/h]
Unit series
DVUT – single-room heat recovery air handling unit
PURPOSE
The unit is designed to ensure continuous mechanical air exchange in houses, offices, hotels, cafes, conference halls, and other utility
and public spaces as well as to recover the heat energy contained in the air extracted from the premises to warm up the filtered stream
of intake air.
The unit is not intended for organizing ventilation in swimming pools, saunas, greenhouses, summer gardens, and other spaces with
high humidity.
Due to the ability to save heating energy by means of energy recovery, the unit is an important element of energy-efficient premises.
The unit is a component part and is not designed for stand-alone operation. 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).

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DVUT 1200 HB(E/E2) EC
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OVERALL DIMENSIONS mm
H H1
H3H4H5
ØD
L1
LL3
L2
H H1 D H3 H4 H5 L L1 L2 L3
2106 2000 400 545 1110 70 1900 1951 265 535
TECHNICAL DATA
The unit is designed for application with the ambient temperature ranging from +1 °C to +40 °C and relative humidity up to 80 %.
In order to prevent condensation on the internal walls of the unit, it is necessary that the surface temperature of the casing is 2-3 °C above
the dew point temperature of the transported air.
The unit is rated as a Class I electrical appliance.
Hazardous parts access and water ingress protection rating:
• IP22 for the unit connected to the air ducts
• IP44 for the unit motors
The unit design is constantly being improved, thus some models may be slightly different from those described in this manual.

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DVUT 1200 HB EC DVUT 1200 HBE EC DVUT 1200 HBE2 EC
Supply voltage [V/50 (60) Hz] 3~400
Maximum power consumption without electric heaters [W] 350
Preheater power [W] - 6300 6300
Reheater power [W] - - 6300
Maximum unit current without electric heaters [А] 1.6
Maximum unit current with electric heaters [А] 1.6 9.6 18.7
Air flow [m3/h] 1240
Sound pressure level at 1 m distance [dBA] 34
Sound pressure level at 3 m distance [dBA] 24
Transported air temperature [°С] -25...+40
Casing material painted steel
Insulation 40 mm mineral wool
Extract filter G4
Supply filter G4 + optional F7
Connected air duct diameter [mm] 400
Weight [kg] 394 398 400
Heat recovery efficiency [%] 84...96
Heat exchanger type counter-flow
Heat exchanger material polystyrene
SEC class A+

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DESIGN AND OPERATING PRINCIPLE
UNIT OPERATION LOGIC
Heat Recovery mode: warm stale extract air from the room flows into the unit, where it is filtered by the extract filters, then air flows
through the heat exchanger and is exhausted outside by the extract fan. Cold fresh air from the outside flows into the unit, where it is
cleaned by the supply filters. Then the air flows through the heat exchangers and is directed to the room with the supply fan. Heat energy
of warm extract air is transferred to clean intake fresh air from the outside and warms it up. The air flows are fully separated while flowing
through the heat exchanger. Heat recovery minimizes heat losses, which reduces the cost of space heating in the cold season.
Summer Cooling mode: the bypass damper is opened, the intake air that is supplied to the premises bypasses the heat exchanger and
its temperature doesn’t change.
The units have three frost protection modes (danger of freezing appears when the exhaust air temperature downstream of the heat
exchanger is lower than +5 °C and intake air temperature upstream of the heat exchanger is lower than -3 °C):
— gradual reduction of the supply fan speed
— with the bypass
— with the electric preheater (if the unit is equipped with a preheater)
Mode selection and settings are described in the control system user’s manual.
Extract air
Exhaust air
Intake air
Supply air
UNIT DESIGN
The units are available in left-hand and right-hand design. Choosing the right arrangement can improve the ease of installation, shorten
the length of the ducts and reduce the number of air duct bends.
Extract air
Exhaust air
Intake air
Supply air
Extract air
Exhaust air
Intake air
Supply air
Right-handed modification Left-handed modification

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DVUT 1200 HB E2 EC unit design
1
2
3
4
5
6 7
8
9
10
11
12
13 14 15 16
1 – air dampers 2 – G4 supply filter 3 – F7 supply filter (option) 4 – preheater 5 – supply fan 6 – SETUP MODE button 7 – louver shutters
for adjusting supply air direction 8 – extract fan 9 – reheater 10 – control unit 11 – differential pressure switch of the extract filter 12 – G4
extract filter 13 – differential pressure switch of the supply filter 14 – terminal block for internal connections 15 – bypass damper 16 –
counter-flow heat exchanger
The unit is equipped with a service door for technical and maintenance operations. Opening the service door while the unit is running
will lead to its shut down. The unit design enables installation of a bypass duct with a bypass damper to route the intake air stream
without contacting the heat exchanger.
The unit is equipped with differential pressure switches to control filter clogging.
Additional equipment for the unit is available on a separate order.
• Humidity sensor. The unit with an installed humidity sensor maintains a set indoor humidity level. As the extract air humidity rises
above the set point, the system automatically switches to the maximum speed. As the humidity drops down below the set point the
unit returns to the previous mode.
• CO2sensor. Measures the level of concentration of carbon dioxide in the room and generates a signal that controls the performance
of the fan. Air flow control based on CO2concentration is an efficient energy saving solution.
• VOC sensor. Qualitative assessment of air saturation with contaminants (cigarette smoke, exhaled air, solvent and detergent vapours).
• The sensor sensitivity can be adjusted with regards to the expected maximum level of air pollution. Enables on-demand ventilation
which results in considerable energy savings as air is exchanged only upon reaching the preset level of pollution.

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MOUNTING AND SETUP
READ THE USER'S MANUAL BEFORE INSTALLING THE UNIT.
While choosing the mounting location provide enough access for maintenance or repair work.
min 950
min 3°
Ø 425-450
The unit is designed for mounting to a horizontal surface adjacent to the wall with the ready-made holes for the air ducts. Lower the
supports on the feet of the unit. During operation, the unit must stand on supports. By adjusting the height of the supports, achieve a
strictly horizontal unit position.
To get the best performance of the unit and to minimize turbulence-induced air pressure losses, connect the straight air duct section to
the unit spigots.
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. The unit
sections are equipped with feet with rollers and supports.
By turning the adjusting screw head, the unit can be mounted on rollers or on supports.
1
2
3
1 – adjusting screw head
2 – roller
3 – support
Open the service door. Connect the sections of the unit.