Vents VUT2 250 P EC Manuale utente

USER’S MANUAL

VUT2 250 P EC

VUE2 250 P EC

VUTE2 250 P EC

Heat (Energy / Heat and Energy) Recovery

Air-Handling Unit

VU..2 250 P ЕС

Safety requirements 3

Introduction 5

Use 5

Delivery set 5

Designation key 6

Main technical data 6

Unit design and operating logic 8

Mounting and set-up 9

Condensate drainage 9

Connection to power mains 10

Unit control 11

Technical Maintenance 15

Fault handling 17

Storage and transportation rules 18

Manufacturer's warranty 18

Acceptance certicate 20

Seller information 20

Connection certicate 20

Warranty card 21

CONTENTS

SAFETY REQUIREMENTS

• Read the user’s manual carefully prior to installing and operating the heat (energy / heat and energy)

recovery air-handling unit (hereinafter «Unit»).

• Full the operation manual requirements 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.

The symbols used in the present user’s manual have the following meaning:

WARNING!

DO NOT!

UNIT MOUNTING SAFETY PRECAUTIONS

The unit must be

disconnected from the power

mains prior to installation or

repair.

THE UNIT MUST BE

GROUNDED!

The unit must not be

operated outside the

temperature range stated

in the user's manual and

in aggressive or explosive

environments.

Do not use damaged

equipment or conductors

to connect the unit to the

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

cable length at your own

discretion.

Do not bend the power

cable.

Avoid damaging the power

cable.

Do not position any

heating devices or other

equipment in close

proximity to the unit

power cable.

VU..2 250 P ЕС

SAFETY PRECAUTIONS TO BE FOLLOWED WHILE OPERATING THE UNIT.

Do not touch the unit

controls with wet hands.

Do not carry out the unit

maintenance with wet hands.

Do not wash the unit

with water.

Avoid penetration of

water onto the electric

parts of the unit.

Use the unit only as originally

intended.

Do not connect any drying

machines or other similar

equipment to the unit and

the ventilation circuit.

Do not put any water

containers (e.g. vases

etc.) on top of the unit.

Do not sit on the unit or put

any foreign objects on top

of it.

OFF

ON Disconnect the unit

from the power mains

prior to any technical

maintenance.

Do not let children operate

the unit.

Avoid damaging the

power cable while

operating the unit.

Do not put any foreign

objects on top of the

power cable.

Do not store any ammable

gases or highly ammable

substances in close proximity

to the unit.

Do not open the unit

during operation.

Should the unit generate

any unusual sounds, smell of

smoke disconnect it from the

power mains and contact the

service centre.

In case of prolonged

operation check the unit

from time to time for any

looseness which may

develop in the fasteners.

Do not shut o the air duct

during the unit operation.

Do not direct the air

stream produced by

the unit onto any

combustion appliances

or burning candles.

INTRODUCTION

USE

DELIVERY SET

Unit - 1 item.;

User’s manual - 1 item.;

Packing box - 1 item.;

Control panel - 1 item.;

The present user’s manual consisting of the technical details, operating instructions and technical

specication applies to the installation and mounting the VU__2 250 P EC heat (energy / heat and

energy) recovery air-handling unit (hereinafter «Unit»).

Due to the ability to reduce heat/energy losses by means of recycling heat (energy / heat and

energy) recovery air-handling units have become an important element of energy-ecient spaces.

Being a component unit, the air-handling unit may not be commissioned for standalone operation.

The unit is designed to ensure continuous mechanical air exchange in houses, oces, 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 ltered stream of supply air.

The unit is designed for extended periods of continuous operation without disconnection from

the power mains.

The transported air must not contain ammable or explosive mixtures, chemically active vapours,

coarse dust, soot, fats or environments favourable for the formation of hazardous substances (toxic

substances, dust, pathogenic germs), sticky substances and brous materials.

THE UNIT IS NOT INTENDED FOR OPERATION BY CHILDREN OR PERSONS

WITH REDUCED PHYSICAL, MENTAL OR SENSORY CAPACITIES, OR LACKING THE

APPROPRIATE TRAINING.

THE UNIT MUST BE HANDLED ONLY BY PROPERLY QUALIFIED PERSONNEL

AFTER THE APPROPRIATE BRIEFING.

THE CHOICE OF UNIT INSTALLATION LOCATION MUST PREVENT

UNAUTHORIZED ACCESS BY UNATTENDED CHILDREN.

VU..2 250 P ЕС

DESIGNATION KEY

VUT 2 250 P EC

Motor Type

Electronically commutated (EC)

Air capacity, m³/h

Unit Type

VUT - Heat Recovery Ventilation

Design features

P - suspended mounting

Number of heat exchangers, pcs

VUE - Energy Recovery Ventilation;

VUTE - Energy and Heat Recovery Ventilation.

Fig. 1. Outside and connecting dimensions of the unit

864

766

51863

370

250

46*

211

ø124

ø12

* - Only for VUT2 250 P EC and VUTE2 250 P EC units.

MAIN TECHNICAL DATA

The air-handling units are intended for operation in closed spaces under ambient air temperatures

from +1 ºC to +60 ºC and relative humidity up to 80%.

Hazardous parts access and water ingress protection rating:

IP 44 for the unit motors;

IP 22 for the assembled unit connected to the air ducts.

The unit series designations, the main outside and connecting dimensions of the unit as well as

its appearance and technical parameters are given in Figure 1 and in Table 1.

The unit design is regularly improved, so some models can slightly dier from those ones

described in this manual.

Model

VUT2 250 P EC

VUE2 250 P EC

VUTE2 250 P EC

Unit voltage [V /50-60 Hz] 1 ~ 230

Maximum fan power, [W] 125

Fan current, [A] 0,87

Max. air capacity [m3/h] 257

RPM 2930

Sound pressure level at 3 m distance [dB(A)] 39

Max. transported air temperature [°C] from -25 up to +60

Casing material aluzinc

Insulation polypropylene foam, 10 mm

Filter: air exhaust/air supply G4 bag lter

(SFK VUT2 200-250 P/P EC G4)

Connected air duct diameter [mm] Ø 125

Heat recovery eciency [%] up to 89

Heat exchanger type cross ow, 2 items

Table 1 . Unit Technical Parameters

VU..2 250 P ЕС

UNIT DESIGN AND OPERATING LOGIC

The unit operating logic is illustrated in Fig. 2. The warm stale air from indoors is supplied into the

unit where it undergoes ltration. The ltered air is directed into the heat exchangers and extracted

outdoors via the air duct system by the extract fan. The fresh cold air from outdoors is supplied

into the unit where it undergoes ltration. The ltered air is directed into the heat exchangers and

supplied into the premises by the supply fan. The heat exchangers ensure the heat energy exchange

between the warm stale air from indoors and the cold fresh air from outdoors without air stream

intermixing. Such design reduces heat energy losses and helps to minimize heating expenses in the

cold season.

The unit design and operation logic are given in Fig. 2. The basic unit equipment includes:

1. Extract motor-impeller block.

2. Supply motor-impeller block.

3. Cross-ow plate heat exchanger.

4. G4 extract lter.

5. G4 supply lter.

6. Condensate drain pan:

- for VUT2 250 P EC unit - 2 pieces

- for VUTE2 250 P EC unit - 1 piece

- VUE2 250 P EC units have no drain pan.

7. Condensate drain pipe:

- for VUT2 250 P EC unit - 2 pieces

- for VUTE2 250 P EC unit - 1 piece

- VUE2 250 P EC units have no drain pipe.

8. Control unit.

33 5

SUPPLY AIR

EXTRACT AIR

2 8 6 7

INTAKE AIR

EXHAUST AIR

Fig. 2. Unit design and operating logic

Mounting and set-up

Make sure that the installation location provides for sucient space as required for the unit

maintenance.

The units are suspended to the ceiling by means of belts rigidly fastened to a horizontal surface (Fig.

3) or threaded rods screwed into dowels which are buried into the ceiling. Prior to the installation check

the unit casing for any left-over foreign objects such as plastic lm or paper.

For best operation eciency the unit should be preceded and followed by straight duct sections at

least 1 m in length.

Fig. 3. Unit installation

Min 40 mm

Condensate drainage

The condensate drain pan located in the heat exchanger section is equipped with condensate

drain pipes which lead the water away from the unit.

Connect the drain pipe (1), the U-trap (3) (not included in the standard delivery set) and the

sewerage system (5) with metal, plastic or rubber pipes (2) and (4). The pipes must be installed at

the minimum gradient of 3°. Prior to connecting the unit to the power mains prime the system with

water! The U-trap must be lled with water at all times! Check for any obstructions to the free ow of

water into the sewerage system to prevent condensate accumulation inside the unit during the heat

exchanger operation which, in turn, may cause equipment failure and water ingress into the premises.

VU..2 250 P ЕС

Fig. 4. Condensate drainage

321 4 53 2 145

A condensate drainage system is used in premises with above-zero temperatures. To enable

operation at subzero temperatures the condensate drainage system must be equipped with heat

insulation and pre-heating facilities.

The units are intended for connection to 230 V / 50 (60) Hz single-phase alternating current mains.

The power mains connection is via a Euro plug cable pre-wired at the factory.

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 Table 1).

Disconnect the unit from the power supply prior to any operations on the unit! The

unit must be plugged into a properly installed power socket with an earthed terminal.

The rated electrical parameters of the unit are stated on the rating plate. Any tampering

with the internal connections is prohibited and will void the warranty.

Connection to power mains

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