Vents VUT 2000 PBE EC Bedienungsanleitung

VUT 2000 PBE EC

VUT 3000 PBE EC

Heat recovery air handling unit

USER'S MANUAL

VUT 2000/3000 PBE EC

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This user’s manual is a main operating document intended for technical, maintenance, and operating staﬀ.

The manual contains information about purpose, technical details, operating principle, design, and installation of theVUT 2000/3000 PBE EC

unit and all its modiﬁcations.

Technical and maintenance staﬀ must have theoretical and practical training in the ﬁeld of ventilation systems and should be able to

work in accordance with workplace safety rules as well as construction norms and standards applicable in the territory of the country.

Safety requirements..................................................................................................................................................................... 3

Purpose................................................................................................................................................................................................ 5

Delivery set........................................................................................................................................................................................ 5

Designation key.............................................................................................................................................................................. 5

Technical data.................................................................................................................................................................................. 6

Design and functioning ............................................................................................................................................................ 8

Mounting and set-up.................................................................................................................................................................. 9

Connection to power mains .................................................................................................................................................. 11

Technical maintenance.............................................................................................................................................................. 12

Troubleshooting............................................................................................................................................................................. 13

Storage and transportation regulations.......................................................................................................................... 13

Manufacturer’s warranty........................................................................................................................................................... 14

Certiﬁcate of acceptance.......................................................................................................................................................... 15

Seller information.......................................................................................................................................................................... 15

Installation certiﬁcate.................................................................................................................................................................. 15

Warranty card................................................................................................................................................................................... 15

CONTENTS

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VUT 2000/3000 PBE EC

SAFETY REQUIREMENTS

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.

Disconnect the unit from the power supply prior to any connection, servicing, maintenance, and

repair operations.

Only qualied electricians with a work permit for electrical units up to 1000 V are

allowed for installation. The present user’s manual should be carefully read before

beginning works.

Check the unit for any visible damage of the impeller, the casing, and the grille before starting

installation. The casing internals must be free of any foreign objects that can damage the

impeller blades.

While mounting the unit, avoid compression of the casing! Deformation of the casing may result

in motor jam and excessive noise.

Misuse of the unit and any unauthorised modiﬁcations are not allowed.

Do not expose the unit to adverse atmospheric agents (rain, sun, etc.).

Transported air must not contain any dust or other solid impurities, sticky substances, or ﬁbrous

materials.

Do not use the unit in a hazardous or explosive environment containing spirits, gasoline,

insecticides, etc.

Do not close or block the intake or extract vents in order to ensure the eﬃcient air ﬂow.

Do not sit on the unit and do not put objects on it.

The information in this user’s manual was correct at the time of the document’s preparation.

The Company reserves the right to modify the technical characteristics, design, or conﬁguration

of its products at any time in order to incorporate the latest technological developments.

Never touch the unit with wet or damp hands.

Never touch the unit when barefoot.

This unit is not intended for use by persons (including children) with reduced physical, sensory

or mental capabilities, or lack of experience and knowledge, unless they have been given

supervision or instruction concerning use of the unit by a person responsible for their safety.

Children should be supervised to ensure that they do not play with the unit.

VUT 2000/3000 PBE EC

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THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE.

DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE.

Connection to the mains must be made through a disconnecting device, which is integrated

into the ﬁxed wiring system in accordance with the wiring rules for design of electrical units,

and has a contact separation in all poles that allows for full disconnection under overvoltage

category III conditions.

If the supply cord is damaged, it must be replaced by the manufacturer, its service agent, or

similarly qualiﬁed persons in order to avoid a safety hazard.

CAUTION: In order to avoid a safety hazard due to inadvertent resetting of the thermal cut-

out, this unit must not be supplied through an external switching device, such as a timer, or

connected to a circuit that is regularly switched on and oﬀ by the utility.

Ensure that the unit is switched oﬀ from the supply mains before removing the guard.

WARNING: If there are any unusual oscillating movements, immediately stop using the unit and

contact the manufacturer, its service agent or suitably qualiﬁed persons.

The replacement of parts of the safety suspension system device shall be performed by the

manufacturer, its service agent or suitably qualiﬁed persons.

Fixing means for attachment to the ceiling such as hooks or other devices shall be ﬁxed with a

suﬃcient strength to withstand 4 times the weight of the appliance.

The mounting of the suspension system shall be performed by the manufacturer, its service

agent or suitably qualiﬁed persons.

The appliance is to be installed so that the blades are more than 2.3m above the ﬂoor.

Precautions must be taken to avoid the back-ﬂow of gases into the room from the open ﬂue of

gas or other fuel-burning appliances.

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VUT 2000/3000 PBE EC

PURPOSE

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 intake 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).

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 UNAUTHORISED

ACCESS BY UNATTENDED CHILDREN.

Name Number

Unit 1 pc.

User's manual 1 pc.

Packing box 1 pc.

VUT 2000 P B E EC A21 DTV

Dierential pressure switches

_ – no diﬀerential pressure switches

DTV – pre-installed diﬀerential pressure switches

Control panel

A21

Motor type

EC – electronically commutated motor

Heater type

E – electric heater

Additional components

B – bypass

Mounting option

P – suspended mounting

Air ow [m3/h]

Unit series

VUT – heat recovery air handling unit

DELIVERY SET

DESIGNATION KEY

VUT 2000/3000 PBE EC

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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

60 % without condensation. In cold, damp rooms, there is a possibility of freezing or condensation inside and outside the casing.

In order to prevent condensation on the internal walls of the unit, it is necessary that the surface temperature of the casing is 2-3 °C above

the dew point temperature of the transported air.

The unit should be operated continuously, and in cases where ventilation is not necessary, reduce the air ﬂow of the fans to a minimum

(20%). This will ensure a favorable indoor climate and reduce the amount of condensation inside the unit, which can damage electronic

components. Never use the unit for dehumidiﬁcation, for example, of new buildings.

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.

TECHNICAL DATA

MODEL VUT 2000 PBE EC VUT 3000 PBE EC

Voltage [V/50 (60) Hz] 3~ 400

Maximum fan power [W] 876 2226

Power of the integrated electric heater [W] 15000 21000

Maximum air ﬂow [W] 15876 23226

Maximum unit current without a heater [A] 5.3 3.5

Current of the integrated electric heater [A] 21.7 30

Maximum current of the unit with an electric heater [A] 27.0 33.5

Air ﬂow [m3/h] 2100 4300

Rotation speed [min-1] 2920 

Noise level, 3 m [dBA] 36 46

Transported air temperature [°C] -25...+40

Casing material Aluzinc

Insulation, mineral wool [mm] 25 25

Filtering class of the extract ﬁlter G4

Filtering class of the supply ﬁlter G4

Connecting air duct diameter [mm] 315 400

Weight [kg] 140 281

Heat recovery eﬃciency [%] 50...67 59...72

Heat exchanger type Cross-ﬂow

Heat exchanger material Aluminium

SEC class NRVU NRVU

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VUT 2000/3000 PBE EC

OVERALL DIMENSIONS OF THE UNIT

ØD

Ød

Dimensions [mm]

Model Ø D В В1 В2 ВЗ Н Н1 L L1 Ø d

VUT 2000 PBE EC 315 950 405 225 500 762 367 1400 1453 9

VUT 3000 PBE EC 400 1265 563 347 570 881 427 1835 1888 9

VUT 2000/3000 PBE EC

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The unit operates as follows:

Warm stale extract air from the room ﬂows through the air ducts to the unit, where it is ﬁltered, then air ﬂows 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 ﬁlter. Then ﬁltered air ﬂows

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.

OPERATING LOGIC

Extract air

Supply 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-ﬂow heat exchanger and an electric heater.

The supply G4 ﬁlter cleans supply air ﬂow and prevents contamination of the unit parts.

The extract G4 ﬁlter prevents contamination of the unit components.

Some condensate may be generated during heat recovery.

The condensed ﬂuid is collected in the drain pan and is removed from the unit through the drain hoses.

UNIT DESIGN

Extract fan

Supply ﬁlter

Extract ﬁlter

Control unit

Heat exchanger

Drain pan

Bypass

Electric heater

Supply fan

DESIGN AND OPERATING PRINCIPLE

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VUT 2000/3000 PBE EC

While mounting the unit provide enough space for its servicing and maintenance.

Minimum distance required to access

the unit

Control unit

Type VUT 2000 PBE EC VUT 3000 PBE EC

min А, mm 500 850

UNIT MOUNTING

The unit is designed for suspended mounting by means of the threaded rod ﬁxed in the threaded dowel.

Example

Nut

Washer

Vibration-

absorbing

rubber

Nut

and lock-nut

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.

MOUNTING AND SETUP

READ THE USER'S MANUAL BEFORE INSTALLING THE UNIT.

VUT 2000/3000 PBE EC

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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 suﬃcient load capacity matching the unit weight.

Otherwise reinforce the 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 ﬂexible one. Optionally the ﬂexible 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 ﬂuid outside the unit.

Connect the pipe, U-trap (not included in the delivery set) and the 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 power mains!

The U-trap must always be ﬁlled with water during the unit operation. Make sure that the water ﬂows 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 outﬂow 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°min 3°

Drain

pipe

Pipe

U-trap

Pipe

Sewage system

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