Vents VUT V EC A11 Series User manual

USER’S MANUAL
Heat recovery air handling unit
VUT 160 PB EC A11
VUT 350 PB EC A11
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CONTENTS
Safety requirements ............................................................................................. 3
Introduction .............................................................................................................. 5
Purpose ....................................................................................................................... 5
Delivery set ............................................................................................................... 5
Designation key ...................................................................................................... 5
Technical data .......................................................................................................... 6
Unit design and operating logic ........................................................................ 7
Mounting and set-up ............................................................................................ 9
Condensate drainage ............................................................................................ 10
Connection to power mains ............................................................................... 11
Unit control ............................................................................................................... 12
Technical maintenance ......................................................................................... 12
Troubleshooting ...................................................................................................... 13
Storage and transportation regulations ......................................................... 14
Manufacturer's warranty ...................................................................................... 14
Acceptance certificate .......................................................................................... 15
Seller information ................................................................................................... 15
Connection certificate ........................................................................................... 15
Warranty card ........................................................................................................... 15
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SAFETY REQUIREMENTS
• Read the user’s manual carefully prior to installing and operating the VUT PB EC A11 heat recovery air handling unit.
• Fulfil the user’s manual requirements as well as the provisions of all the applicable local and national construction,
electrical and technical norms 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 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.
Symbol legend used in the manual:
WARNING!
DO NOT!
UNIT MOUNTING AND OPERATION SAFETY PRECAUTIONS
• Disconnect the unit from power mains
prior to any installation operations. • Unpack the unit with care.
• Do not lay the power cable of the
unit in close proximity to heating
equipment.
• While installing the unit follow the
safety regulations specific to the use of
electric tools.
• 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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• 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.
THE PRODUCT MUST BE COLLECTED SEPARATELY AT THE END OF SERVICE LIFE.
DO NOT DISPOSE OF AS UNSORTED MUNICIPAL WASTE.
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INTRODUCTION
This user’s manual consisting of the technical details, operating instructions and technical specication covers the installation
and mounting of the VUT ... PB EC A11 heat recovery air handling, hereinafter referred to as «the unit».
PURPOSE
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 independent operation.
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 supply air.
Transported air must not contain any flammable or explosive mixtures, evaporation of chemicals, coarse dust, soot and oil
particles or environments favourable for the formation of hazardous substances (toxic substances, dust, pathogenic germs), sticky
substances and fibrous materials.
THE UNIT MAY NOT BE OPERATED BY CHILDREN OR PERSONS WITH REDUCED
PHYSICAL, MENTAL OR SENSORY CAPACITIES, OR LACKING 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.
DELIVERY SET
Unit 1 item
User’s manual 1 item
Control panel user’s manual 1 item
Control panel 1 item
Packing box 1 item
DESIGNATION KEY
VUT X PB EC A11
Motor type
electronically commutated
Control panel
Air capacity [m3/h]
Unit type
VUT - ventilation with heat recovery
Spigot orientation
P - suspended mounting, horizontal spigot orientation
Extra components
B - bypass
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TECHNICAL DATA
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 %.
Hazardous parts access and water ingress protection rating:
• IP44 for the unit motors
• IP22 for the assembled unit connected to the air ducts
The unit design is constantly being improved, so some models can slightly dier from those ones described in this manual.
Technical data VUT 160 PB EC A11 VUT 350 PB EC A11
Unit voltage [V /50–60 Hz] 1~ 230
Maximum unit power [W] 50 170
Maximum unit current [A] 0,4 1,3
Maximum air capacity [m3/h] 190 410
RPM 3770 3200
Sound pressure level at 3 m distance [dB(A)] 26 34
Maximum transported air temperature [°C] from -25 to +60
Casing material aluzinc steel
Insulation 40 mm mineral wool
Extract lter G4
Supply lter F7
Connected air duct diameter [mm] Ø125 Ø160
Weight [kg] 48 70
Heat recovery eciency from 82 to 94 % from 80 to 91 %
Heat exchanger type counter-ow
Heat exchanger material aluminium
H1
H
A2
A
A1
B1 B3 ØD
Ø16
Ø10,2
8 holes
B2
B
L4
L2 L1 L6
L3
L4
L2LL5
L3
Model Dimensions [mm]
ØD A A1 A2 B B1 B2 B3 H H1 L L1 L2 L3 L4 L5 L6
VUT 160 PB EC A11 125 1004 1104 1072 754 822 480 410 320 361 386 293 245 31 128 123 216
VUT 350 PB EC A11 160 1135 1234 1202 1044 1112 680 610 320 363 555 417 345 40 119 144 282
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UNIT DESIGN AND OPERATING LOGIC
Control panel
Detachable service plates
for lter maintenance operations
Service side
Outdoor air temperature sensor
Supply air temperature sensor
Supply fan
Extract fan
Control unit
Bypass damper
Extract lter
Drain pan
Drain pipes
Counter-ow heat exchanger
Supply lter
Freeze protection sensor
HV1 humidity sensor *
Electric lead-ins NKP duct heater for supply air pre-heating *
*Additional equipment for the unit is purchased separately as an accessory:
• HV1 humidity sensor. The humidity sensor is purchased separately as an accessory. The unit with the installed humidity
sensor maintains a set indoor humidity point: 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.
Installation and connection of the humidity sensor (see page 9) is carried out on site by the service technician.
• NKP duct heater for supply air pre-heating. The heater maintains the duct air temperature at a point that prevents the
heat exchanger freezing. A control system regulates heater operation. Mounting and connection of the heater, see page 9.
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UNIT OPERATION MODES
Heat recovery mode: warm extract air from the room ows into the unit and is cleaned in the extract lter. Then the air is
moved through the heat exchanger and is exhausted outside with the extract fan.
Cold fresh air from outside ows into the unit, where it is cleaned in the supply lter. Then the air ows through the heat
exchanger and is moved to the room with the supply fan.
Supply air is heated in the heat exchanger by transferring the heat energy of warm and humid extract air to the cold fresh air.
The air ows are fully separated while owing through the heat exchanger. Heat recovery minimizes heat losses, which reduces the
cost of space heating in the cold season.
EXTRACT AIR
SUPPLY AIR
INTAKE AIR
EXHAUST AIR
Defrosting mode: Defrosting mode: to prevent the heat exchanger freezing in the cold season the unit has an automatic
Defrosting mode according to the freeze protection temperature sensor readings in the exhaust air duct downstream of the heat
exchanger. Only the extract fan operates in the Defrosting mode, the supply fan is switched o. Warm stale extract air from the
room ows through the heat exchanger and warms it up. The unit switches to the Defrosting mode at the extract air temperature
+3 °C. As the temperature rises the unit returns to the previous mode.
EXTRACT AIR
SUPPLY AIR
INTAKE AIR
EXHAUST AIR
Summer Cooling mode: the bypass damper is opened, the intake air that is supplied to the premises bypasses the heat
exchanger. The intake air temperature remains constant.
EXTRACT AIR
SUPPLY AIR
INTAKE AIR
EXHAUST AIR
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MOUNTING AND SETUP
THE UNIT MUST BE MOUNTED BY A QUALIFIED EXPERT ONLY, PROPERLY TRAINED AND
HAVING THE REQUIRED TOOLS AND MATERIALS.
HV1 HUMIDITY SENSOR MOUNTING AND CONNECTION
The HV1 humidity sensor is not included in the delivery set and can be ordered separately.
Remove the service panel from the service side and install the humidity sensor into the mount from the side of the extract air
duct, then connect the humidity sensor contact socket to the respective contact socket coming from the control unit.
NKP HEATER MOUNTING
The NKP heater is not included in the delivery set and can be ordered separately.
The heater is rated for connection to single-phase AC 230 V/50 (60) Hz.
The heater is designed for mounting in the air duct connected with the supply spigot of the unit.
The electric heater and the air handling unit must be connected via the cable with the DB-9M connectors through the prewired
DB-9F connectors.
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UNIT MOUNTING
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 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 fans the spigots may be covered with a protecting grille or other protecting device with mesh width not more than
12.5 mm.
While installing the unit ensure convenient access for subsequent maintenance and repair. Fasteners for ceiling 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, refer to Technical data section. Fasteners for unit mounting should be selected by the
service technician.
Wall and ceiling mounting examples
Nut
Washer
Vibration absorbing
rubber
Vibration absorbing
rubber
WALLMOUNTED CONTROL PANEL INSTALLATION
Fixing methods for control panel wall mounting:
• wall surface mounting
• wall ush mounting
Example of wall ush mounting using a mounting box is shown in the control panel user’s manual. The mounting box and the
mounting kit must be purchased separately.
CONDENSATE DRAINAGE
Connect the drain pipe to the sewage system using the SG-32 U-trap kit (available upon separate order).The pipe slope downwards
must be at least 3°.
min 3°
min 3°
DRAIN HOSE
U-TRAP
SEWAGE SYSTEM
DRAIN PIPE
DRAIN HOSE
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