Vents VUT2 250 P EC Istruzioni per il montaggio
USER’S OPERATION MANUAL
VUT2 250 P EC
VUE2 250 P EC
VUTE2 250 P EC
AIR HANDLING UNIT WITH
SENSIBLE AND LATENT HEAT RECOVERY
2
VU..2 250 P EC
VU..2 250 P EC
Introduction ................................................................................................
Use ..................................................................................................................
Delivery set ..................................................................................................
Structural designation key .....................................................................
Technical data .............................................................................................
Safety requirements .................................................................................
Structure and operating logic ..............................................................
Mounting and set-up ...............................................................................
Condensate drainage ..............................................................................
Connection to power mains ..................................................................
Unit control .................................................................................................
Maintenance ...............................................................................................
Fault handling ............................................................................................
Storage and transportation rules ........................................................
Manufacturer’s warranty ........................................................................
Acceptance certicate .............................................................................
Electrical connection certicate ..........................................................
Warranty card .............................................................................................
CONTENTS
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INTRODUCTION
USE
DELIVERY SET
Unit - 1 piece;
Operation Manual - 1 piece;
Shipping box - 1 piece;
Fastener kit - 1 piece.
The present user’s operation manual contains technical description, data sheet, installation
and mounting guidelines for the air handling unit with heat (energy, heat and energy) recovery
VU_ 2 250 P EC (hereinafter referred as the unit).
The unit with sensible and latent heat recovery is designed to save heating and cooling costs by
means of thermal energy utilization and is one of the energy saving components used in buildings
and premises. The HRV unit is a component unit and is not designed for independent operation.
The unit is designed for creating continuous air exchange by means of mechanical ventilation in
private residences, oces, hotels, cafes, conference rooms. In addition the unit enables recovery of
the waste heat energy contained in the extract air to warm up the clean supply air.
The transported medium must not contain any combustible or explosive mixtures, chemical
fumes, coarse dust, soot, fat or any environment prolic for the formation of harmful substances (toxic
substances, dust and pathogens) as well as sticky substances and brous materials.
The unit is not intended for operation by children or any persons with reduced
physical, mental or sensory capacities as well persons lacking the required training.
The unit must be handled only by properly qualied personnel after the
appropriate safety brieng.
The installation are of the unit must be chosen to prevent access by unattended
children.
4
VU..2 250 P EC
VU..2 250 P EC
STRUTURAL DESIGNATION KEY
VUT 2 250 P EC
Motor type
electronically commutated
Capacity, m³/h
Unit Type
VUT – unit with sensible heat recovery heat exchangers
Design Features
P – suspension-type
Number of heat exchangers, units
VUE – unit with latent heat recovery heat exchangers;
VUTE – unit with a sensible heat recovery heat exchanger and latent heat recovery
heat exchanger.
Fig. 1. Outside and connecting dimensions of the unit
864
766
51863
370
250
46*
46*
211
ø124
ø12
* - only for VUT2 250 P YEC and VUTE2 250 P YEC.
TECHNICAL DATA
5
SAFETY REQUIREMENTS
While operating and mounting the unit consider the requirements of the present operation manual
as well as general requirements of all applicable local and national building and electrical codes and
standards.
The unit must be grounded!
Before connecting the unit to power mains make sure that the unit is free of any visible damages
or any other foreign objects inside the casing that can damage the impeller blades. Otherwise contact
the service center.
Warning!
Disconnect the unit from power supply prior to any mounting, servicing, connection
or repair operations with the unit.
The unit is designed for operation in an enclosed area at ambient temperatures from +1ºC
to + 60 ºC at relative humidity of up to 80%.
Hazardous parts access and water ingress protection standard:
Unit motors - IP 44;
Unit assembly connected to air ducts - IP 22.
The unit series designations, their main outside and connecting dimensions, appearance and
technical parameters are given on Figure 1 and in Table 1.
The unit design is regularly being improved, so some models can slightly dier from those ones
described in this manual.
Model VU..2 250 P EC
Ventilation mode MIN NORMAL MAX
Unit voltage 50 Hz [V] 1 ~ 230
Max. fan power [W] 25 65 130
Fan current [A] 0,21 0,48 0,87
Max. air capacity, m3/h 108 186 250
Rotation speed [min -1] 1420 2410 2930
Noise level, 3 m [dB(A)] 26 34 39
Transported air temperature [°C] from -25 ° C to +60 C
Casing material Aluzinc
Insulation 10 mm celled polypropylene
Filter: extract/supply pocket-type G4
Connected duct diameter [mm] ø 125
Weight [kg] 17
Heat recovery eciency up to 88%
Heat exchanger type cross-ow, 2 pcs.
Table. 1. Technical parameters of the unit
6
VU..2 250 P EC
VU..2 250 P EC
RESTRICTIONS
• Do not operate the unit beyond the specied temperature range or in an aggressive
and explosive medium!
• Do not connect clothes dryers or similar equipment to the ventilation system!
• Do not operate the unit in the air and dust mixture medium!
DESIGN AND OPERATING LOGIC
The unit design and operating principle are shown on Fig. 2. The warm stale air from the premises
enters the unit where it is stripped of impurities in the lter. The air is then extracted through the heat
exchangers and further outside by means of the exhaust fan via the air ducts. The fresh cool outdoor
air is supplied into the unit via the air ducts and undergoes ltration. The air then passes through the
heat exchanger and is delivered into the premises by the supply fan. The exchangers ensure energy
exchange between the warm stale air from indoors with the cool fresh air from outdoors without
mixing both air ows.This technology reduces heating costs in cold season, and cooling costs in warm
season.
The unit design and operating principle are given on Fig. 2. The basic conguration
includes:
1. Exhaust turbine.
2. Supply turbine.
3. Cross-ow plate heat exchanger
- for VUT2 250 P EC unit - sensible heat exchanger - 2 pcs.
- for VUTE2 250 P EC unit - sensible heat exchanger - 1 pcs. and latent heat exchanger - 1 pcs.
- for VUE2 250 P EC unit - lathent heat exchanger - 2 pcs.
4. Exhaust air lter class G4.
5. Supply air lter class G4.
6. Condensate drain pan:
- for VUT2 250 P EC units - 2 pcs.
- for VUTE2 250 P EC - 1 piece.
- VUE2 250 P EC units are not equipped with a condensate drain pan.
7. Condensate drain pipe:
- for VUT2 250 P EC units - 2 pcs.
- for VUTE2 250 P EC - 1 piece.
- VUE2 250 P EC are not equipped with a condensate drain pipe.
8. - Automatic unit.
33 5
1
6
4
SUPPLY AIR
EXTRACT AIR
7
2 8 6 7
INTAKE AIR
EXHAUST AIR
Fig. 2. Design and operating logic
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MOUNTING AND SETUP
While installing the unit ensure convenient access for subsequent maintenance or repair.
The units are mounted to the ceiling using belts rigidly attached to a horizontal surface (Fig. 3)
or threaded rods which are securely installed in threaded expansion bolts driven into the ceiling.
Prior to installation make sure that the casing is free from any foreign objects such as wrapping lm
or paper.
For best results position the unit so as to allow a direct air duct section at least 1 m long in front
and behind.
Fig. 3. Unit installation
min 40 mm
CONDENSATE DRAINAGE
The condensate drain pan installed in the heat recovery section has pipes for extracting the
condensed uid outside the unit.
Connect pipe 1, U-trap 3 (not included in delivery package) and sewage collection system 5
with metal, plastic or rubber pipes 2 and 4. The pipe pitch must be at least 3°. Fill up the system with
water before connecting the unit to the power mains! During the operation the U-trap must be lled
with water at all times. 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 which, in
turn, may cause equipment failure and water ingress into the premises.
8
VU..2 250 P EC
VU..2 250 P EC
Fig. 4. Condensate drainage
321 4 53 2 145
The condensate drainage system is designed for normal operation in premises with air
temperatures above 0 °C. If the expected air temperatures are below 0 °C the condensate drainage
system must be equipped with heat insulation and pre-heating facilities.
The unit connects to 230 V / 50 Hz single-phase AC mains. Proper connection is ensured by the
power cable with a Euro plug supplied by the manufacturer.
The unit must be connected to the power mains via an automatic cut-out switch built into the
stationary wiring with a magnetic breaker with the nominal trip current at least equal to the unit
consumption current (see Table. 1).
Disconnect the unit from the power supply prior to any work.The unit must be
plugged into a properly installed power socket with an earthed terminal. The nominal
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.
CONNECTION TO POWER MAINS
9
UNIT CONTROL
Fig. 5 . Control panel
MIN
the Setup mode button
Ventilation mode selection button
Flow Rate Down button in the Setup mode
(disabled in the Operation mode)
Flow Rate Up button in the Setup mode
(disabled in the Operation mode)
Indicator Operation/Setup
Indication of main ventilation modes
(in the Setup mode the min ow speed is displayed)
is disabled
The unit is controlled from the control panel (Fig. 5).
1. Ventilation Mode Selection.
The unit oers three ventilation modes:
MIN - basic ventilation mode. The air ow rate for this mode is set in the Setup mode from
according to Table 3 (see p.2 «Setup Mode»). ;
NORMAL - the air ow rate in this mode is 80 m³/h higher than in the MIN mode. After 30
minutes the unit automatically reverts to the MIN mode;
MAX - the unit will run at its maximum air ow capacity. The ventilation modes are
indicated according to Table. 2.
Use button to cycle between the ventilation modes. The modes are engaged cyclically.
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VU..2 250 P EC
VU..2 250 P EC
2. Setup Mode.
To enter the Setup Mode press and hold the button (Fig. 5) for at least 10 seconds until the
Operation/Setup indicator changes from green to red.
The main ventilation mode indicators will then display the minimum air ow rate corresponding to
speed one according to Table 3.
To change the air ow rate use button. Press button to increase the parameter value or press
button to decrease it. The air ow rate being set can be controlled by means of six main ventilation
mode indicators provided that the Operation/Setup indicator glows red.
You can leave the Settings mode in two ways. Either press button or button once again
or this will happen automatically 60 seconds after the last pressing of button or button .
The Operation/Setup indicator will then change colour from red to green.
After leaving the Setup mode the minimum ow rate value setting remains in the memory even
after power-o.
Mode Indicator combination Operation mode
MIN Minimum ow rate
Unlimited time
NORMAL Minimum ow rate + 80 m³/h
Time: 30 minutes.
MAX Maximum ow rate
Unlimited time
Table 2. Ventilation mode display on the control panel
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1
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