Vents VUT 350 PE EC User manual

USER’S MANUAL
VUT 350 PE EC
VUT 600 PE EC
VUT 1000 PE EC
HEAT RECOVERY
AIR HANDLING UNIT

2VUT .. PE EC
CONTENTS
Safety requirements 3
Introduction 5
Use 5
Delivery set 5
Designation key 5
Technical parameters 5
Design and operating logic 7
Mounting and set-up 8
Condensate drain 9
Connection to power mains 11
Unit control 12
Maintenance 12
Troubleshooting 14
Storage and transportation rules 14
Manufacturer's warranty 15
Acceptance certicate 16
Seller's information 16
Mounting certicate 16
Warranty card 17
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.

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VUT .. PE EC
THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE.
• 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. • 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.

4VUT .. PE EC
INTRODUCTION
This user’s manual includes technical description, operation, installation and mounting guidelines, technical data for the heat
recovery air handling unit VUT PE EC, hereinafter referred as the unit.
USE
Unit - 1 item
Control panel - 1 item
User’s manual for the air handling unit - 1 item
User’s manual for the control panel - 1 item
Packing box 1 item
Outdoor temperature sensor - 1 item.
DESIGNATION KEY
DELIVERY SET
Control panel
____ — PU SENS 01 with a sensor display
A7 — PU JK 01 with LCD display
Service side
L - left service side
R - right service side
Motor type
EC - electronically commutated motor
Heater type
E - electric heater
Unit type
VUT - heat recovery ventilation
Mounting option
P - suspended mounting
Air capacity [m3/h]
VUT ХХХ PE ЕС Х Х
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.
The unit is designed to ensure continuous mechanical air exchange in houses, offices, hotels, cafés, 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 supply 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).
Relative humidity of transported air must not exceed 80 % at an ambient temperature of +20 °C.

5
VUT .. PE EC
TECHNICAL PARAMETERS
UNIT TECHNICAL DATA
Voltage, 50/60 Hz [V] 1 ~ 230
Max. fan power [W ] 200 270 400
Max. fan current [A] 1,62 1,6 2,26
Electric heater power [kW] 1,5 2 3,3
Electric heater current [A] 6,5 8,7 14,3
Total unit power [kW] 1,7 2,27 3,7
Total unit current [A] 8,12 10,3 16,56
Air capacity [m3/h] 400 700 1100
Rotation speed [min -1] 3560 3060 2780
Noise level, 3 m [dBA] 48 53 52
Transported air temperature [°С] -25 ... +40 -25 ... +60
Casing material Aluzinc
Insulation 20 mm mineral wool
Filter: extract G4
supply G4 (F7)
Connecting air duct dia. [mm] Ø160 (Ø150)* Ø200 Ø250
Weight [kg] 67 75 95
Heat recovery efficiency up to 90%
Heat exchanger type Counter-flow
Heat exchanger material Polystyrene
* in case of using a Ø 160 to Ø 150 mm air duct. Not included into the delivery set.
The unit is designed for indoor application with the ambient temperature ranging from +1 °C up to +40 °C and relative humidity
up to 80 %.
In order to prevent condensation on the internal walls of the units, it is necessary that the surface temperature of the casing is 2-3
°C higher than 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.

6VUT .. PE EC
OVERALL DIMENSIONS OF THE UNIT, MM
Modell Ø D 1 2  4 5 1 LL1
VUT 350 PE EC 160 485 415 554 135,5 214 577 281 152 1238 1291
VUT 600 PE EC 200 827 713 723 294 345 920 280 120 1238 1291
VUT 1000 PE EC 250 1351 608 522 431 655 1444 318 143 1349 1402
L1
ø d
Ø D
B1B1 H
H1
L
B1B2
B3 B4
B
B5
Ø D
B1
H
H1
L
L1
B2
B5
B3 B4
ø d
VUT 600 PE EC, VUT 1000 PE EC
VUT 350 PE EC

7
VUT .. PE EC
DESIGN AND OPERATING LOGIC
The unit operates as follows:
Warm stale extract air from the room ows through the air ducts to the unit, where it is ltered, then air ows through the heat
exchanger and is exhausted outside by the extract fan through the air ducts.
Clean cold air from outside is moved by the supply fan to the unit, where from it is directed to the supply lter. Then ltered air ows
through the heat exchanger and moves to the room through the air ducts.
Heat energy of warm extract air is transferred to clean intake fresh air from outside and warms it up. Heat recovery minimizes thermal
energy losses, energy demand and operating costs for air heating accordingly.
The unit is equipped with a detachable service panel for repair works and preventive maintenance and a cover enabling access to
the control system components.
SUPPLY AIR
EXTRACT AIR
INTAKE AIR
EXHAUST AIR
The basic unit delivery set includes a remote control panel for connection to the control system inside the unit casing.
The unit comprises a supply and an extract centrifugal single-inlet fan with forward curved blades and maintenance-free EC motors
with external rotor and built-in overheat protection, a plate counterow heat exchanger and an electric heater.
The supply G4 lter cleans supply air ow and prevents contamination of the unit parts. The extract G4 lter prevents contamination
of the unit components.
Some condensate may be generated during heat recovery. The condensed uid is collected in the drain pan and is removed from the
unit through the drain hoses.
UNIT DESIGN BASED
on VUT 350 PE EC
EXTRACT FAN
SUPPLY FILTER
EXTRACT FILTER
BYPASS
SUPPLY FAN
DRAIN PAN
ELECTRIC HEATER
CONTROL UNIT
CONTROL PANEL
HEAT EXCHANGER
DIFFERENTIAL
PRESSURE SWITCH
DIFFERENTIAL
PRESSURE SWITCH
UNIT OPERATING LOGIC
based on VUT 600 PE EC unit example

8VUT .. PE EC
MOUNTING AND STARTUP
UNIT MOUNTING
The unit is designed for suspended mounting by means of the threaded rod xed in the threaded dowel pin.
washer
wut
vibration-absorbing
rubber
nut and
lock-nut
Example
MINIMUM ACCESS TO THE UNIT
While mounting the unit provide enough space for its servicing and maintenance.
To attain the best performance of the unit and to minimise turbulence-induced air pressure losses while mounting connect a straight
air duct section on both sides of the unit.
Minimum straight air duct length:
• equal to 1 air duct diameter on intake side.
• equal to 3 air duct diameters on outlet side.
If the air ducts are not connected or the connected air ducts are too short, protect the unit parts from ingress of foreign objects
by covering the spigots with a protecting grille or other protecting device with mesh width not more than 12.5 mm to prevent
uncontrollable access to the fans.
MINIMUM REQUIRED ACCESS TO THE UNIT
UNIT CONTROLS LOCATION
Modell VUT 350 PE  VUT 600 PE  VUT 1000 PE 
min А, mm 500 850 800
min A depends on the lter
VUT 350 PE EC - 441 mm;
VUT 600 PE EC - 784 mm;
VUT 1000 PE EC - 650 mm (less than VUT 600 PE EC).

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VUT .. PE EC
The unit is available with the service side located on the left and on the right of the unit to facilitate mounting and provide minimum
service access.
UNIT MODIFICATIONS
SUPPLY AIR EXTRACT AIR
EXHAUST AIR
INTAKE AIR
SUPPLY AIR
EXTRACT AIR
EXHAUST AIR
INTAKE AIR
RIGHT-HAND MODIFICATION
(TOP VIEW)
LEFT-HAND MODIFICATION
(TOP VIEW)
SERVICE SIDE
SERVICE SIDE
Safety precautions
The unit is designed for mounting on a rigid and stable structure.
The unit is mounted with anchor bolts. Make sure that a mounting construction has sucient load capacity matching the unit weight.
Otherwise reinforce an installation place by beams, etc.
If the threaded bolts used for the unit mounting are too short, the unit can generate abnormal noise and resonate with the ceiling. The
suspended bolts must be long enough to prevent resonating.
If the unit connection place to the spiral seam duct is supposed to be the source of abnormal noise, replace the spiral seam air duct with
the exible one. Optionally the exible connectors may be used to prevent resonating.
CONDENSATE DRAINAGE
The condensate drain pan in the heat recovery section is equipped with two hoses for extracting the condensed uid outside the
unit. Connect the pipe, U-trap (not included in delivery package) and sewage collection system with metal, plastic or rubber connecting
pipes. The pipe slope downwards must be at least 3°. Fill up the system with water before connecting the unit to the power mains! The
U-trap must always be lled with water during the unit operation. Make sure that the water ows freely into the sewage collection
system or otherwise condensed water may build up in the unit during the heat exchanger operation and cause equipment failure and
condensed water outow into the premises.
The condensate drainage system is designed for normal operation in premises with air temperatures above 0 °C. If the expected
ambient air temperatures are below 0 °C the condensate drainage system must be equipped with heat insulation and pre-heating
facilities.
min 3 °
DRAIN PIPE
SEWAGE SYSTEM
PIPE
PIPE
U-TRAP

10 VUT .. PE EC
13 24
OUTDOOR TEMPERATURE SENSOR INSTALLATION AND CONNECTION
The air handling unit is equipped with an outdoor temperature sensor.
Mounting of the outdoor temperature sensor:
1. Remove two screws from the sensor cover.
2. Take o the cover from the sensor.
3. Install the sensor on the outside wall. The wall must not be exposed to direct sunlight.
4. Install the sensor cover back.
5. Connect the sensor to the terminal block X1 in compliance with the external wiring diagram at page 12.
DUCT HUMIDITY SENSOR INSTALLATION AND CONNECTION
HV1 duct humidity sensor is a special accessory that is not included into the delivery set. To install the sensor connect the humidity
sensor socket connector to the socket connector inside the unit. Then x the sensor with the clamp and the holder in the extract air duct
upstream of the heat exchanger.
1. 2. 3.
Duct humidity sensor installation place
VUT 350 PE EC
Duct humidity sensor installation place
VUT 600(1000) PE EC
Duct humidity sensor connection

11
VUT .. PE EC
CONNECTION TO POWER MAINS
The unit is rated for connection to single-phase ac 230 V/ 50-60 Hz power mains. For electric installations use insulated durable heat-
resistant conductors (cables, wires) with the minimum wire cross section 2.5 mm2.The above conductor cross section value is tentative
and in practice must be based on the wire type, maximum permissible heating temperature, insulation, length and installation method.
Connect the unit to power mains through the external automatic circuit breaker with magnetic trip integrated into the xed wiring
system with the rated current not below the rated current consumption (refer to page 6).
The terminal block with the prewired control unit is located inside the control unit compartment. To connect the power and the
ground cable route the cables through the airtight electric lead-in in the unit casing and connect these to the terminal block. The wiring
diagram for connection of the air handling unit to power supply is on back side of the lid.
Power
supply
Digital input (DI)
Digital output (DO)
Analogue input (AI)
Analogue output (AI)
InsideOutside
Р1
М1
М2
ТE5
ТE1
SM3
230V AC
24V AC
SM2
ТE2
D1
D2
F1 F2
RK1
SM1
Q1
TS1
TS2
HV1
12V AC
ТE6 HV2
RS485
PD1
+-
PD2
-
FUNCTIONAL DIAGRAM
Designation Name Designation Name
D1* Supply air damper RK1 Plate heat exchanger
D2* Extract air damper SM1* Supply damper actuator
F1 Supply lter SM2* Extract damper actuator
F2 Extract lter SM3 Bypass damper electric actuator
M1 Supply fan TE1 Outer air temperature sensor
M2 Exhaust fan TE2 Temperature sensor at heat exchanger outlet
P1 Control panel TE5 Duct temperature sensor
Q1 Electric air heater TE6 Room air temperature sensor
HV1* Duct humidity sensor TS1 Overheat protection thermostat actuated at +50 °С with automatic reset
HV2 Indoor humidity sensor TS2 Overheat protection thermostat actuated at +90 °С with manual reset
PD1 Dierential pressure switch supply lter clogging control
PD2 Dierential pressure switch extract lter clogging control
* Not included into the delivery set, available on separate order.
DISCONNECT THE POWER SUPPLY PRIOR TO ANY OPERATIONS WITH THE UNIT.
CONNECTION OF THE UNIT TO POWER MAINS IS ALLOWED BY A QUALIFIED
ELECTRICIAN WITH A WORK PERMIT FOR THE ELECTRIC UNITS UP TO 1000 V AFTER
CAREFUL READING OF THE PRESENT USER’S MANUAL. THE RATED ELECTRICAL
PARAMETERS OF THE UNIT ARE GIVEN ON THE MANUFACTURER’S LABEL.
ANY TAMPERING WITH THE INTERNAL CONNECTIONS IS PROHIBITED AND WILL VOID
THE WARRANTY.

12 VUT .. PE EC
EXTERNAL WIRING DIAGRAM
Power input
230 V AC
18
Out
17
Gnd
16
E+
15
A
14
B
13
Gnd
12
+12V
11 10
no c
9
no
8
c
7
L
6
N
5
L
4
N
3
PE
2
N
1
L
2
PK1
1
− ELECTRIC SHOCK HAZARD!
1. The unit delivery set includes P1 and TE1 only.
2. ** Maximum connecting cable length is 20 m!
Обозн . Наименование Тип Провод **
ККБ Фреоновый охладитель N0 2х0,75 мм
2
SM1 Эл .привод заслонки притока LF 2302х0,75 мм
2
SM2 Эл .привод заслонки вытяжки LF 2302х0,75 мм
2
PK1
P1
ТЕ 1
Контакт с пульта пожарной сигнализации NO 2х0,75 мм
2
Пульт дистанционного управления
Датчик уличной температуры
4х0,75 мм
2
3х0,75 мм
2
SM1
L
2 1
N
SM2
L
2 1
N
Cooler activation signal
(NO-contact)
Р1
Gnd Out A B Gnd +12V
E+
TE1
Х1
t°C
Design. Name Type Wire**
Cooler DX cooler N0 2х0,75 mm
SM1 Supply air damper actuator LF 230 2х0,75 mm
SM2 Extract air damper actuator LF 230 2х0,75 mm
PK1 Contact from re alarm panel NO 2х0,75 mm
P1 Remote control 4х0,75 mm
1 Outdoor temperature sensor 3х0,75 mm2
MAINTENANCE
The recommended maintenance periodicity is 3-4 times per year. The maintenance and servicing routines include regular cleaning and
the following operations:
1. Filter maintenance.
Contaminated lters increase air resistance thus impairing supply air volume into the premises.
Clean the lters as these get dirty, but at least 3-4 times a year. Use a vacuum cleaner to remove the contamination or use new lters.
Change the lters after the second cleaning. New lters can be purchased from the unit seller.
UNIT CONTROL
The unit is operated with the control panel. For detailed information, read the user’s manual for the control panel. The remote control is
not included into the delivery set.
Supply air lter
Extract air lter
Filter removing
Disconnect the socket connector of the dierential pressure switches.
Remove the front panel.
Pull the lters until they disengage the guide bars.
Install the unit in the reverse order.

13
VUT .. PE EC
Removing the heat exchangers
Disconnect the socket connector of the dierential pressure switches.
Take o the front cover.
Pull the heat exchanger and withdraw it from the unit.
Disconnect the socket connector on the bypass wall and remove the bypass.
For VUT 600 PE EC and VUT 1000 PE EC: remove the second heat exchanger in the same way as the rst one.
Install the unit in the reverse order.
Access to the fan motors:
Step 1
Remove the bottom panel.
Disconnect the drain hoses and remove the drain pan.
Remove the screws and intake diusers.
Step 2
Unscrew xing screws of the electric motor.
Push the motor inside the unit through the fan inlet and disconnect
the socket connector to enable access to the motor socket connector.
Turn the motor as shown in the picture, then remove it from the unit.
Installation place for 4 xing
screws of the motor
Socket connector
Drain pan
Diusers
3. Fan inspection (once a year).
Even regular technical maintenance of the lters and heat exchangers may not completely prevent dust accumulation in the fans which
reduces the fan capacity and impairs supply air volume into the premises.
Clean the fans with a cloth or a soft brush. Do not use water, aggressive solvents, sharp objects etc. for cleaning not to damage the
impeller.
2. Heat exchanger maintenance (once a year).
Even regular lter technical maintenance may not completely prevent dirt accumulation on the heat exchanger unit. Clean the heat
exchanger on a regular basis to ensure its high heat recovery eciency. To clean the heat exchanger remove it from the unit and wash it
with warm neutral detergent solution. Re-install the dry heat exchanger back into the unit.

14 VUT .. PE EC
Fault Possible reasons Fault handling
The fan does not start up
during the unit start-up.
No power supply. Make sure the unit is properly connected to power
mains, otherwise troubleshoot a connection error.
Motor is jammed, the impeller are clogged. Turn the unit o. Troubleshoot the motor jam and the
impeller clogging. Clean the blades. Restart the unit.
System alarm. Turn the unit o. Contact the service centre.
Circuit breaker tripping
following the unit
turning on.
Overcurrent as a result of short circuit in the
electric circuit. Set higher speed.
Low air ow.
Low set fan speed. Set higher speed.
The lters, the fans or the heat exchanger are
contaminated.
Clean or replace the lters, clean the fans and the heat
exchanger.
The air ducts, diusers, louver shutters, grilles
are clogged or contaminated.
Clean or replace air ducts, diusers, louver shutters,
grilles.
The air dampers, diusers or louver shutters are
closed.
Make sure the air dampers, diusers or louver shutters
are fully opened.
Low supply air
temperature.
The extract lter is soiled. Clean or replace the extract lter.
The heat exchanger is frozen.
Check the heat exchanger condition. Turn the unit o
and restart it after the heat exchanger freezing danger
is no longer imminent.
Electric heater malfunction. Contact the unit seller for troubleshooting.
High noise, vibration.
The impeller is soiled. Clean the impeller.
The fan or casing screw connection is loose. Tighten the screw connection in the fan or the casing
against stop.
No anti-vibration dampers. Install anti-vibration rubber mounts.
Condensate leakage. The drain line is clogged, damaged or wrong
mounted.
Clean the drain line, if necessary. Check the drain line
slant, inspect the U-trap and make sure the drain line is
equipped with frost protection.
TROUBLESHOOTING
STORAGE AND TRANSPORTATION RULES
4. Condensate drain maintenance (once a year).
The drain pipes may get clogged with the extracted particles. Pour some water inside the drain pan and check the pipe for
clogging. Clean the U-trap and drain pipe if required.
5. Extract and supply diuser maintenance (as required).
Remove the diusers and louver shutters and wash these with warm mild detergent solution.
6. Air intake maintenance (twice a year).
Leaves and other pollutions can clog the supply air grille and reduce the unit performance and supply air volume. Check the
supply grille twice per year and clean it as required.
7. Duct system maintenance (every 5 years).
Even regular fullling of all the prescribed above maintenance operations may not completely prevent dust accumulation in the air
ducts which reduces the unit performance. The air duct maintenance includes regular cleaning or replacement.
• Store the unit in the manufacturer’s original packaging box in a dry closed ventilated premise with temperature range
from + 5˚С to + 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 operation temperature for
at least 3-4 hours.

15
VUT .. PE EC
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 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 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.
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.

16 VUT .. PE EC
Unit Type Heat recovery air handling unit
Seller’s Stamp
Model VUT ________ PE EC
Serial Number
Manufacture Date
Purchase Date
Warranty Period
Seller
Unit Type Heat recovery air handling unit
Model VUT ________ PE EC
Serial Number
Manufacture Date
Quality Inspector’s
Stamp
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
The VUT ________ PE EC unit has been connected to power mains pursuant to the requirements
stated in the present user’s manual.
Installation Stamp
Seller
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:
ACCEPTANCE CERTIFICATE
SELLER’S INFORMATION
MOUNTING CERTIFICATE
WARRANTY CARD

17
VUT .. PE EC

18 VUT .. PE EC

19
VUT .. PE EC

V68EN-10