Vents MICRA 80 A3 Manuel utilisateur

MICRA 80 A3

MICRA 80 A4

Energy recovery

air handling unit

USER’S MANUAL

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

Introduction .............................................................................................................. 5

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

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

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

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

Unit design and operating principle ................................................................ 7

Mounting and set-up ............................................................................................. 8

Connection to power mains ................................................................................ 10

Unit control ............................................................................................................... 10

Technical maintenance ......................................................................................... 11

Troubleshooting ...................................................................................................... 12

Storage and transportation regulations ......................................................... 12

Manufacturer's warranty ...................................................................................... 13

Acceptance certicate ........................................................................................... 14

Seller information ................................................................................................... 14

Installation certicate ............................................................................................ 14

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

CONTENTS

SAFETY REQUIREMENTS

• Read the user’s manual carefully prior installing and operating the energy recovery air handling unit (hereinafter referred to as «the

unit»).

• Full the operation 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:

UNIT MOUNTING SAFETY PRECAUTIONS

WARNING!

DO NOT!

Disconnect the unit from power mains prior to

any installation or repair operations. 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 cables when

connecting 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 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.

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UNIT OPERATION SAFETY PRECAUTIONS

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.

Protect the unit electric parts from water ingress.

Use the unit only as intended by the

manufacturer.

Do not connect a clothes dryer or other similar

equipment to the unit or the ventilation system.

Do not put any water containers on the unit, i.e.

ower vases.

Do not sit on the unit and do not put any

objects on it.

OFF

Disconnect the unit from power mains prior to

any technical maintenance.

Do not let children operate the unit.

Do not damage the power cable while operating

the unit.

Do not put any foreign objects on the power

cable.

Keep combustible gases and inammable

products away of the unit. Do not open the operating unit.

When the unit generates unusual sounds, odour

or emits smoke disconnect it from power supply

and contact the Seller.

In case of continuous operation of the unit

periodically check the security of mounting.

Do not block the air duct when the unit is on. Do not let air ow from the unit be directed to

the open ame devices or candles.

INTRODUCTION

The present User’s manual contains the technical details, operating instructions and technical specication for the unit.

PURPOSE

The unit is an energy saving device based on energy recovery technology and is one of the energy saving components used in the buildings

and premises.

The unit is a component part and is not designed for stand-alone operation.

The unit is designed to ensure continuous mechanical air exchange in houses, oces, hotels, cafés, 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 units are designed for wall mounting.

The unit is rated for continuous operation.

Transported air must not contain any ammable or explosive mixtures, evaporation of chemicals, sticky substances, brous materials,

coarse dust, soot and oil particles or environments favourable for the formation of hazardous substances (toxic substances, dust, pathogenic

germs).

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

Name Number

Air handling unit 1 item

Fastening kit 1 item

Cardboard template 1 item

User's manual 1 item

Packing box 1 item

MICRA 80 AX

Unit name

Air capacity [m3/h]

Unit control panel

3 - P3-1-300 control panel

4 - SP3-1 control panel

DESIGNATION KEY

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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 transported air temperature range is from -25 °C up to +50 °C.

The unit is rated as a Class I electrical appliance.

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 may be slightly dierent from those ones described in this manual.

TECHNICAL DATA

374

270

220

630

125

OVERALL DIMENSIONS OF THE UNIT MM

UNIT TECHNICAL DATA

Speed 1 2 3

Voltage [V/50 Hz] 1 ~ 230

Power [W] 25 35 57

Total unit current [A] 0.15 0.2 0.34

Air capacity [m3/h] 40 60 80

Noise level [dBA] 24 32 41

Transported air temperature [°C] from -25 up to +50

Casing material painted steel

Insulation 15 mm, penofol* type C

Filter: exhaust G4

supply G4

Connected air duct diameter [mm] 125

Weight [kg] 17

Heat recovery eciency [%] from 68 up to 77

Heat exchanger type cross ow

Heat exchanger material polymerized cellulose

* — vapour and thermal insulation barrier based on polyethylene foam covered with aluminum foil

Heat exchanger

Front panel

Intake lter

Extract lter

Extract fan

Supply fan

Thermostat

Control panel

А4 А3

• The unit casing is made of painted steel, internally lled with a layer of heat- and sound-insulating material.

• The cross ow plate heat exchanger, the supply and the extract fan are installed inside the unit.

• The front panel is installed on the latches to enable quick access for unit servicing.

UNIT DESIGN

• If the exhaust air temperature falls down below +3 °C the heat exchanger is subjected to the freezing danger.The freeze protection thermostat

is installed in the exhaust air duct downstream of the heat exchanger. In case of a freezing danger the supply fan is turned o and the unit

operates in air exhaust mode only. After the heat exchanger is warmed up and there is no freezing danger the unit reverts to the standard

operation mode.

The unit has the following operating principle.

Warm stale extract air from the room ows to the unit, where it is ltered, then

air ows through the heat exchanger and is exhausted outside by the extract fan.

Clean cold air from outside is moved to the supply lter. Then ltered air ows

through the heat exchanger and is moved to the room with the supply fan.

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 and

space heating expenses in cold seasons.

The unit heat exchanger is able to recover not only heat energy but contained

humidity thus maintaining indoor humidity level. In summer time the heat

exchanger serves for supply air cooling and dehumidication and in winter time

for its heating and moistening.

SUPPLY AIR

EXTRACT AIR

EXHAUST AIR

INTAKE AIR

DESIGN AND OPERATING PRINCIPLE

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MOUNTING AND SETUP

Install the unit using the master plate from the scope of delivery and two Ø 125 mm ducts of required length.

Make 4 holes (Ø 8 and 60 mm deep)

in the wall using a master plate

Cable exit from the unit

2 holes for the round Ø 150 mm duct Fill

the gaps between the wall and the air duct

with a mounting foam

Make 4 holes (Ø 8 and 60 mm deep)

in the wall using a master plate

2 holes for the round Ø 150 mm duct.

Fill the gaps between the wall and

the air duct with a mounting foam

160

35 415

100

370

615

200

300

100

Cable exit from the unit

drill 4 holes in the wall,

Ø 8 mm and 60 mm deep

2 holes for the round Ø 125 mm duct Fill

the gaps between the wall and the air duct

with a mounting foam

Cable exit from the unit

CARDBOARD MASTER PLATE FOR HOLE MARKING, MM

UNIT MOUNTING

Unit mounting sequence:

1. Fix the master plate (included in the scope of delivery) to the wall

at required level using adhesive tape.

2. Use a master plate to mark two Ø 150 mm holes for the air ducts and four Ø 8 mm holes for the dowels.

3. Remove the master plate and drill through holes for the air ducts and the 60 mm deep holes for the dowels. The through holes for the air ducts

must be sloped down by 2-3°. After that insert the dowels from the scope of delivery into the respective holes. While preparing the holes consider

the method of laying the power cable. The cable exit from the unit is shown on the master plate.

Install the air ducts with the slope 2-3° down-

wards to prevent ingress of liquid and foreign

objects into the unit from outside.

Insert the dowels into the holes.

INSIDE

OUTSIDE

Make 4 holes (Ø 8 and 60 mm deep)

in the wall using a master plate

2 holes for the round Ø 125 mm duct Fill

the gaps between the wall and the air duct

with a mounting foam

Cable exit from the unit

Outer ventilation

hood

7. Mounting sequence:

Open the front panel and remove the heat exchanger.

Connect the unit spigots to the plastic air ducts.

Fix the unit to the wall installing the 5.0x50 screws from

the scope of delivery into four Ø 8 mm holes.

Install the heat exchanger and close the front panel.

ATTENTION! The round air ducts and the outer ventilation hood

are not included in the scope of delivery and are available

separately.

8. Install a Ø 125 mm outer ventilation hood on the outer wall side to

prevent ingress of large foreign objects into the air ducts.

The outer hood is not included in the scope of delivery and is available

separately.

4. Using adhesive tape x the master plate back in place.

5. Install the air ducts into the master plate holes and seal those with a

mounting foam through the openings in the master plate.

Install the air ducts sloped down by 2-3° to enable condensate drainage

from the unit.

6. After the mounting foam hardening (see the solidication time in

the product specication) remove the master plate and cut o the

protruding parts of the air ducts to be ush with the outer and inner

wall.

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CONNECTION TO POWER MAINS

DISCONNECT THE UNIT FROM POWER MAINS PRIOR TO ANY OPERATIONS. CONNECT THE UNIT

TO A PROPERLY INSTALLED SOCKET WITH A GROUNDED TERMINAL.

ANY TAMPERING WITH THE INTERNAL CONNECTIONS IS PROHIBITED AND WILL VOID THE

WARRANTY.

The unit is rated for connection to single-phase AC power mains 1~230 V/50 Hz. For this purpose the power cable with a plug is connected by

the Manufacturer.

Connect the unit to power mains through the external automatic circuit breaker with a magnetic trip integrated into the xed wiring system.

The trip current must correspond to the current consumption.

The unit is controlled via the A3 or A4 sensor control panel, depending on the model. The control panels are located on the unit back panel.

The A3/A4 control panel is included in the scope of delivery.

UNIT CONTROL VIA THE A3 CONTROL PANEL UNIT CONTROL VIA THE A4 CONTROL PANEL

To activate a required unit speed rotate the speed knob clockwise

and select one of three speed settings:

1 – first speed

2 – second speed

3 – third speed

To turn the unit off rotate the speed knob counter clockwise and

set it to OFF position.

To activate a required unit speed touch a respective speed button

on the sensor panel:

–rst speed

–second speed

–third speed

To change speed press a respective speed button.

To turn the unit off press the current speed button again. The

activated speed button glows blue.

UNIT CONTROL

L N PE

3 2 1

1~230 V/50 Hz 1~230 V/50 Hz

To the terminal box

of the unit

OUT

OUT OUTOUT IN

L1L2L3

L N PE

WIRING DIAGRAM OF THE A3 CONTROL PANEL WIRING DIAGRAM OF THE A4 CONTROL PANEL

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