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

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VUT .. PE EC
VUT .. 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

3
SAFETY REQUIREMENTS
• Read the user’s manual carefully prior to the operation and installation of the heat recovery air handling unit, hereinafter the
unit.
• Installation and operation of the unit shall be performed in accordance with the present user’s manual as well as the provisions
of all the applicable local and national construction, electrical and technical codes and standards.
• The warnings contained in the user’s manual must be considered most seriously since they contain vital personal safety
information.
• Failure to follow the safety regulations may result in an injury or unit damage.
• Read the manual carefully and keep it as long as you use the unit.
• While transferring the unit control the user’s manual must be turned over to the receiving operator.
Symbol legend used in the manual:
UNIT MOUNTING SAFETY PRECAUTIONS
WARNING!
DO NOT!
The unit must be disconnected from the power
supply prior to every installation or repair
operation.
The unit must not be operated outside
the temperature range stated in the user's
manual or in aggressive or explosive
environments.
Do not position any heating devices or other
equipment in close proximity to the unit power
cord.
Do not use damaged equipment or
conductors to connect the unit to power
mains.
While installing the unit follow the safety
regulations specic to the use of electric tools. Unpack the unit with care.
Do not change the power cord length at your
own discretion. Do not bend the power cord.
Avoid damaging the power cord.
Use the unit only as intended by the
manufacturer.

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VUT .. PE EC
VUT .. PE EC
UNIT OPERATION SAFETY PRECAUTIONS
Do not touch the unit control speed or the
control panel with wet hands. Do not carry out
the unit maintenance with wet hands.
Do not wash the unit with water.
Protect the unit electric parts from water
ingress.
Do not block the air duct when the unit is on.
OFF
ON
Disconnect the unit from power supply
prior to maintenance.
Do not let children operate the unit.
Do not damage the power cable while
operating the unit. Do not put any objects
on the power cable.
Keep combustible gases and inammable
products away of the unit. Do not open the operating unit.
In case of unusual sounds, smoke disconnect
the unit from power supply and contact the
service centre.
Do not let air ow from the unit be directed
to the open ame devices or candles.

5
INTRODUCTION
This user’s manual includes technical description, operation, installation and mounting guidelines, technical data for the heat
recovery air handling unit VENTS VUT PE EC, hereinafter referred as the unit.
USE
The unit with heat recovery and electric heater is designed to save heat energy by means of heat recovery and is one of the energy
saving components used in the buildings and premises. VUT PE EC is a component unit and is not designed for independent operation.
The unit is designed to provide permanent controlled air exchange by means of mechanical ventilation in houses, oces, hotels,
cafés, meeting halls and other mechanically ventilated premises as well as utilization of extract air heat energy to warm up supply
puried air.
Transported air must not contain any ammable or explosive mixtures, evaporation of chemicals, coarse dust, soot and oil particles,
sticky substances, brous materials, pathogens or any other harmful substances.
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 [m/h]
VUT  PE   
TECHNICAL PARAMETERS
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%.
The unit is classied as a class I electric appliance.
Hazardous parts access and water ingress protection standard:
IP 44 for the unit motors;
IP 22 for the assembled unit connected to the air ducts.
The unit design is regularly being improved, so some models can slightly dier from those ones described in this manual.
THE UNIT IS NOT INTENDED TO BE USED BY CHILDREN, PHYSICALLY OR MENTALLY DISABLED PERSONS, PERSONS
WITH SENSORY DISORDER, PERSONS WITH NO APPROPRIATE QUALIFICATION.
ANY OPERATIONS WITH THE UNIT MUST BE PERFORMED ONLY BY PROPERLY QUALIFIED PERSONNEL AFTER THE
APPROPRIATE SAFETY BRIEFING.
THE UNIT INSTALLATION SITES MUST PREVENT ACCESS BY UNATTENDED CHILDREN.

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VUT .. PE EC
VUT .. PE EC
Model VUT 350 PE EC VUT 600 PE EC VUT 1000 PE EC
Ø D 160 200 250
B485 827 1351
B1 415 723(712) 1120(1216)
B2 554 - 608
B3 135,5 294 431
B4 214 345 655
H281 280 318
H1 152 120 143
L1238 1238 1349
L1 1291 1291 1402
L2 924 - -
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 [dB(A)] 48 53 52
Transported air temperature [°] -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 eciency up to 90%
Heat exchanger type Counter-ow
Heat exchanger material Polystyrene
* in case of using a Ø 160 to Ø 150 mm air duct. Not included into the delivery set.
Fig. 1. VUT 350 PE EC overall dimensions Fig. 2. VUT 600 (1000) PE EC overall dimensions
UNIT OVERALL DIMENSIONS, MM

7
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
UNIT OPERATING LOGIC
based on VUT 600 PE EC unit example

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VUT .. 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).

9
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

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VUT .. PE EC
1 32 4
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

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CONNECTION TO POWER MAINS
DISCONNECT THE UNIT FROM POWER MAINS PRIOR TO ANY ELECTRIC
INSTALLATION OPERATIONS. CONNECTTHE UNIT TO A CORRECT INSTALLED SOCKET
WITH A GROUNDED TERMINAL.
THE RATED ELECTRICAL PARAMETERS OF THE UNIT ARE GIVEN ON THE
MANUFACTURER’S LABEL. ANY INTERNAL CONNECTION MODIFICATIONS ARE NOT
ALLOWED AND RESULT IN WARRANTY LOSS.
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.
InsideOutside
Power
supply
ɋ1
ɇ1
ɇ2
ɍE5
ɍE1
SM3
230V AC
24V AC
SM2
ɍE2
D1
D2
F1 F2
RK1
SM1
Q1
TS1
TS2
HV1
12V AC
ɍE6 HV2
Digital input (DI)
Digital output (DO)
Analogue input (AI)
Analogue output (AI)
RS485
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
* Not included into the delivery set, available on separate order.

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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!
SM1
L
21
N
SM2
L
21
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.
Supply air lter
Extract air lter
Filter removing:
Remove the side panel.
Pull the lters until they disengage the guide bars.
Install the lters in the reverse order.
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.

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Removing the heat exchangers:
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 heat exchangers 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.

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VUT .. PE EC
Possible faults and troubleshooting
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
Store the unit in the manufacturer’s original packing box in a dry ventilated premise at the temperatures from +5 °C up to +40 °C and
relative humidity up to 80%.
Storage environment must not contain aggressive vapours and chemical mixtures provoking corrosion, insulation and sealing
deformation.
Use hoist machinery for handling and storage operations to prevent the unit damage. Full the handling requirements applicable
for the applicable freight type.
Transportation with any vehicle type is allowed provided that the unit is protected against mechanical and weather damage.
Avoid any mechanical shocks and strokes during handling operations.
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.

15
MANUFACTURER’S WARRANTY
The manufacturer hereby warrants normal operation of the unit over the period of 24 months from the retail sale date provided the
user’s observance of the transportation, storage, installation and operation regulations.
Should any malfunctions occur during the unit operation through the manufacturer’s fault during the warranty period the user is
entitled to elimination of faults by means of warranty repair performed by the manufacturer.
The warranty repair includes work specic to elimination of faults in the unit operation to ensure its intended use by the user within the
warranty period. The faults are eliminated by means of replacement or repair of the complete unit or the faulty part thereof.
The warranty repair does not include:
• Routine maintenance;
• Unit installation / dismantling;
• Unit setup.
To benet from warranty repair the user must provide the unit, the user’s manual with stamped sale date and the payment document
certifying the purchase.
The unit model must comply with the one stated in the user’s manual.
Contact the unit Seller for warranty service.
The manufacturer’s warranty does not apply to the following cases:
• User’s failure to provide the unit with the entire delivery package as stated in the user’s manual or with missing component parts
previously dismounted by the user;
• Mismatch of the unit model and make with the respective details stated on the unit packing and in the user’s manual;
• User’s failure to ensure timely technical maintenance of the unit;
• External damage to the casing (excluding external modications of the unit as required for its installation) and the internal
components of the unit;
• Alteration of the unit design or engineering changes of the unit;
• Replacement and use of the unit assemblies, parts and components not approved by the manufacturer;
• Unit misuse;
• User’s violation of the unit installation regulations;
• User’s violation of the unit management regulations;
• Unit connection to the power pains with a voltage dierent from the one stated in the user’s manual;
• Unit breakdown due to voltage surges in the power mains;
• User’s discretionary repair of the unit;
• Unit repair performed by any persons without the manufacturer’s authorization;
• Expiry of the unit warranty period;
• User’s violation of the established regulations specic to the unit transportation;
• User’s violation of the unit storage regulations;
• Wrongful acts against the unit committed by third persons;
• Unit breakdown due to circumstances of insuperable force (re, ood, earthquake, war, hostilities of any kind, or blockade);
• Missing seals if provided by the user’s manual;
• Failure to provide the user’s manual with the sale date stamp;
• Missing payment document certifying the unit purchase.
USERS’ CLAIMS SHALL BE SUBJECT TO REVIEW ONLY UPON PRESENTATION OF
THE UNIT, THE PAYMENT DOCUMENT AND THE USER’S MANUAL WITH THE SALE DATE
STAMP.
FOLLOWING THE REGULATIONS STIPULATED HEREIN WILL ENSURE A LONG AND
TROUBLE-FREE OPERATION OF THE UNIT.

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VUT .. PE EC
Product Type Heat recovery air handling unit
Model VUT______PE EC______
Serial Number
Manufacturing Date
is compliant with the technical specications and is hereby declared ready for service. We hereby declare that the product complies
with the essential protection requirements of Electromagnetic Council Directive 2004/108/EC, 89/336/EEC and Low Voltage Directive
2006/95/EC, 73/23/EEC and CE-marking Directive 93/68/EEC on the approximation of the laws of the Member States relating to
electromagnetic compatibility.
This certicate is issued following test carried out on samples of the product referred to above.
Quality Inspector’s
Stamp
VUT ___ PE EC _____ unit has been connected to power mains pursuant to the requirements stated in the
present user’s manual.
Company name
Address
Phone number
Installation technician's
full name
Installation date: Signature:
Shop name
Address
Phone number
E-mail
Sales date
This is to certify delivery of the complete unit with the user's manual. The warranty terms are
acknowledged and accepted.
Customer's signature
ACCEPTANCE CERTIFICATE
SELLER’S INFORMATION
MOUNTING CERTIFICATE
Seller’s seal
Installation technician’s
company seal
This is to certify that the work specic to the unit installation has been performed in accordance with
all the applicable provisions of local and national construction, electrical and technical codes and
standards. The unit operates normally as intended by the manufacturer.
Signature:

17
WARRANTY CARD
Product type Heat recovery air handling unit
Model VUT______PE EC ______
Serial number
Manufacturing date
Sales date
Warranty period
Sales company
Seller’s seal
______________________________________________________________________________________________________
______________________________________________________________________________________________________
______________________________________________________________________________________________________
______________________________________________________________________________________________________
______________________________________________________________________________________________________
______________________________________________________________________________________________________
______________________________________________________________________________________________________
_________________________________________________________________________________________________

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VUT .. PE EC

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V68EN-08