Exhausto VEX260 Manual de usuario

VEX260/270/280

Electrical installation guide

for EXact2 control system

Electrical installation........................................ Chapter 1 + 2

Original instructions

3005079-2017-11-28 Electrical installation guide_VEX260-270-280

EXHAUSTO A/S

Odensevej 76

DK-5550 Langeskov

Tel. +45 65 66 12 34

Fax: +45 65 66 11 10

[email protected]

www.exhausto.com

1. Connection diagram for supply voltage and connection box

1.1. Key to connection diagram ..................................................................................5

1.2. Connection diagram.............................................................................................. 6

1.2.1. Wiring diagram for supply voltage and connenction box .................................6

1.2.2. Termination.......................................................................................................7

1.3. Cable plan...............................................................................................................8

2. Installation of the VEX

2.1. Installation.............................................................................................................. 9

2.1.1. Connections in the connection box.................................................................. 9

2.1.2. NB:................................................................................................................. 10

2.2. Dimensioning and electrical installation........................................................... 10

2.2.1. Installation requirements and recommendations.......................................... 10

2.3. Electrical components.........................................................................................12

2.3.1. Terminal board on EXact2 main board...........................................................13

2.3.2. Connecting shielded cable to MODBUS........................................................ 14

2.3.3. Service – connection of additional HMI control panel.................................... 15

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Symbols, terms and warnings

Prohibition symbol Failure to observe instructions marked with a prohibition symbol

may result in serious or fatal injury.

Danger symbol Failure to observe instructions marked with a danger symbol

may result in personal injury and/or damage to the unit.

Scope These instructions apply to the EXHAUSTO EXact2 control system. Please refer

to the product instructions regarding accessories and extra equipment.

The instructions must be fully observed to ensure personal safety and to protect

the equipment and ensure its correct operation. EXHAUSTO A/S accepts no liabil-

ity for accidents caused by equipment not used in accordance with the manual’s

instructions and recommendations.

Warnings The work must be performed by an authorised electrician, in ac-

cordancewith locally applicable regulations and legislation.

Opening the unit Do not open the service doors before the supply voltage has

been disconnected at the isolation switch and the fans have

stopped. The isolation switch is positioned on the left side of the

connection box on top of the unit.

Lock the air han-

dling unit during

operation

The VEX unit must always be locked

during operation:

● Use the cylinder lock in the han-

dle. Remember to remove the key

from the lock.

● Or use a padlock. Use the han-

dle’s built-in padlock fixture.

Lock

Padlock fitting

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Rating plate The VEX unit rating plate shows:

● VEX unit, type (1)

● production number (2)

NB Always have the production number ready when contacting EXHAUSTO A/S.

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1. Connection diagram for supply voltage and connection box

1.1 Key to connection diagram

Diagram The diagram on the following page illustrates the connection of the power supply,

HMI display panel and various accessories that can be connected to the connec-

tion box.

Diagram explana-

tion given on the

following page Term Description Supplied by

-A1 Connection box EXHAUSTO

-A2 Connection box for heating coil/cooling unit EXHAUSTO

-A3 Connection box for electric heating coil (if fitted) EXHAUSTO

-F1 Distribution board fuses Customer

-Q1 Distribution board group switch Customer

-F2 Connection box control fuses EXHAUSTO

-Q2 Connection box isolation switch EXHAUSTO

NB: Other parts, shown on the front page of the VEX instructions, are supplied by EX-

HAUSTO

Accessories See instructions for the relevant accessories:

● HCW water heating coil

● HCE electrical heating coil

● CCW cold water coil

● MXCU, module for external cooling unit

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and connection box

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1.2 Connection diagram

1.2.1 Wiring diagram for supply voltage and connenction box

VEX260-270-280,

3x400V

* Not supplied by EXHAUSTO

** 120 Ω terminating resistor

*** Terminal block for continuation of 24 VDC

**** Only if IHCW

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and connection box

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1.2.2 Termination

The first and last devices on the bus must be terminated. The diagrams below

show two termination examples. See position of jumper JP2 on AHUC in section

"Terminal board on EXact2 Main board".

If Then See diagram no.

HMI is the only device on

the bus (bus connector

optional)

the jumper must be connec-

ted to JP2, which applies a

resistance of 120 Ω

both buses are used the jumper must not be con-

nected

the bus connectors are

not used

the jumper must be connec-

ted to JP2 as per diagram 1,

which applies a 120 Ω resist-

ance

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and connection box

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1.3 Cable plan

The cable plan below shows the accessories that can be connected in the connection box.

3005079-2017-11-28 Connection diagram for supply voltage

and connection box

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2. Installation of the VEX

2.1 Installation

VEX unit The electrical installation for the air handling unit comprises the following connec-

tions:

Connection to VEX unit:

● Connection box

● Optional electrical heating coil HCE

● Optional water heating coil HCW

● Optional MXCU module for external cooling unit

● Optional CCW cold water coil

2.1.1 Connections in the connection box

Wiring configura-

tions

Wiring configurations for the terminal board in the connection box are shown in

the table below.

Wiring configurations See section

Supply voltage 2.2

HMI control panel via modbus 1

Modbus components via modbus 1

on termination and instructions for the

component in question

Control box for heating coil (water

heating coil), MHCW module, via

modbus

on termination and instructions for water

heating coil HCW

Control box for heating coil (electric

heating coil), MHCE2 module, via

modbus

on termination and instructions for elec-

tric heating coil HCE

Control system for external cooling

unit MXCU

on termination and instructions for

MXCU module

External start* below

Closing damper in exhaust air LSA/

LSAR

Closing damper in outdoor air LSF/

LSFR

Fire and AUX IN* 1

and below

* External start, Fire

and AUX IN

Note following with regard to jumpers on EXact2 main board.

If Then

Fire is used the jumper between terminals 20 and 21 must be removed

AUX IN used the jumper between terminals 22 and 23 must be removed

EXT start is used the jumper between terminals 24 and 25 must be removed

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2.1.2 NB:

NB:

The door must be kept clear.

No cables or equipment of

any kind may be fitted to the

door

2.2 Dimensioning and electrical installation

● The supply cable must be dimensioned and installed in ac-

cordance with applicable rules and regulations.

● The earth terminal (PE) must always be connected.

Diagram The supply voltage must be connected to the isolation switch as shown in the dia-

gram in the section “Connection diagram for supply voltage and connection box”.

2.2.1 Installation requirements and recommendations

Isolation switch and

control fuses

An isolation switch and control fuses are built into the unit to provide overload and

short-circuit protection.

Fuses The fuses must be suitable for:

● Short-circuit protection of the unit

● Short-circuit protection of the supply cable

● Overload protection of the supply cable

Max. rating Maximum fuse rating is 63 A (gG/gL).

Power supply cable When dimensioning the supply cable, the conditions at the installation location, in-

cluding temperature and cable duct layout, must be taken into consideration.

Earth leak circuit

breaker

● The unit must be protected against indirect contact.

If current earth leak circuit breakers are fitted in the installation, they must

be of a type that meets the following requirements:

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