Exhausto VEX200 series Manuale utente
VEX240/250
Electrical installation guide
for EXact2 control system
Electrical installation........................................Chapter 1 + 2
Original instructions
3005071-2015-02-06 VEX240-250H
EXHAUSTO A/S
Odensevej 76
DK-5550 Langeskov
Tel. +45 65 66 12 34
Fax: +45 65 66 11 10
www.exhausto.com
1. Connection diagram for supply voltage and connection box
1.1. Key to connection diagram ..................................................................................5
1.2. Connection diagram..............................................................................................6
VEX240, 1x230V ......................................................................................................6
VEX250, 3x400V.......................................................................................................7
1.2.3. Termination......................................................................................................8
1.3. Cable plan...............................................................................................................9
2. Installation of the VEX
2.1. Installation............................................................................................................10
2.1.1. Connections in the connection box................................................................10
2.2. Dimensionering og el-installation......................................................................11
2.2.1. Installation requirements and recommendations...........................................11
2.3. Electrical components........................................................................................13
2.3.1. Terminal board on EXact2 main board..........................................................14
2.3.2. Connecting shielded cable to MODBUS........................................................15
2.3.3. Service – connection of additional HMI control panel....................................16
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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 liability for
accidents caused by equipment not used in accordance with the manual’s instruc-
tions and recommendations.
Warnings The work must be performed by an authorised electrician, in ac-
cordancewith locally applicable regulations and legislation.
Warnings:
Opening the unit Do not open the service doors before the supply voltage has been
disconnected at the isolation switch. The isolation switch is posi-
tioned on the left side of the connection box on top of the unit.
Lock the air han-
dling unit during op-
eration
The VEX unit must always be locked
during operation:
●Use the cylinder lock in the handle.
Remember to remove the key from
the lock.
●Or use a padlock. Use the handle’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 connection
box.
Diagram explana-
tion given on the fol-
lowing 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
VEX240, 1x230V
* Not supplied by EXHAUSTO
3005071-2015-02-06 Connection diagram for supply voltage
and connection box
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** 120 Ωterminating resistor
*** Terminal block for continuation of 24 VDC
**** Only if IHCW
VEX250, 3x400V
* Not supplied by EXHAUSTO
** 120 Ωterminating resistor
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and connection box
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*** Terminal block for continuation of 24 VDC
**** Only if IHCW
1.2.3 Termination
The first and last devices on the bus must be terminated. The diagrams below show
twoterminationexamples.SeepositionofjumperJP2onAHUCinsection"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 connected
to JP2, which applies a resist-
ance of 120 Ω
1
both buses are used the jumper must not be con-
nected 2
the bus connectors are
not used the jumper must be connected
toJP2asperdiagram1,which
applies a 120 Ωresistance
1
1.
2.
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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.
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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
1
on termination and instructions for water
heating coil HCW
Control box for heating coil (electric
heating coil), MHCE2 module, via
modbus
1
on termination and instructions for elec-
tric heating coil HCE
Control system for external cooling
unit MXCU 1
on termination and instructions for MXCU
module
External start* below
Closing damper in exhaust air LSA/
LSAR 1
Closing damper in outdoor air LSF/
LSFR 1
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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