Exhausto VEX320C User manual
Electrical installation guide
for VEX320C/330C/330H with EXact2 control system
ON
Electrical installation........................................Chapter 1 + 2
Original instructions
3004224-2014-09-03 VEX320-330_EXact2
EXHAUSTO A/S
Odensevej 76
DK-5550 Langeskov
Tel. +45 65 66 12 34
Fax +45 65 66 11 10
www.exhausto.dk
1. Connection diagram for supply voltage and connection box
1.1. Connection diagram .............................................................................................5
1.1.1. Connection diagram for supply voltage and connection box...........................6
1.1.2. Termination......................................................................................................7
1.2. Cable plan...............................................................................................................8
2. Installation of the VEX
2.1. Scope of installation..............................................................................................9
2.1.1. Connections in the connection box..................................................................9
2.2. Dimensioning and electrical installation...........................................................10
2.2.1. Installation requirements and recommendations...........................................10
Electrical wiring........................................................................................................10
2.3. VEX300C, electrical components.......................................................................12
2.3.1. VEX300C, components in connection box....................................................13
2.4. VEX330H, electrical components.......................................................................14
2.4.1. VEX330H, components in connection box....................................................15
2.5. EXact2 main board..............................................................................................16
2.5.1. Terminal board on EXact2 main board..........................................................16
2.5.2. Connecting shielded cable to MODBUS........................................................17
2.5.3. Service – connection of additional HMI control panel....................................18
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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 Failuretoobserveinstructionsmarkedwithadangersymbolmay
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-
cordance with locally applicable regulations and legislation.
Warnings
Opening the unit Donotopentheservicedoorsbeforethesupplyvoltagehasbeen
disconnected at the isolation switch. The isolation switch is posi-
tioned on the side of the connection box on top of the unit.
ON OFF
Information plate The VEX unit information plate
shows:
1. VEX model
2. Production order no.
1
2
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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 Connection diagram
Diagram The diagram on the following page illustrates the connection of the power supply,
HMIdisplay paneland variousaccessories thatcan beconnected atthe connection
box.
Diagram explana-
tion given on the fol-
lowing page Term Description Supplied by
-A1 Connection box EXHAUSTO
-A3 Connection box for electric heating coil (if fitted) EXHAUSTO
-F1 Distribution board fuses Customer
-Q1 Distribution board group switch Customer
-Q2 Connection box isolation switch EXHAUSTO
Further info See also "EXact2 main board" section for more information on components which
can be connected.
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 heating coil - water
●HCE heating coil - electric
●MXCU, module for external cooling unit
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1.1.1 Connection diagram for supply voltage and connection box
* not EXHAUSTO delivery
** 120 Ωresistance to termination
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1.1.2 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 "Termi-
nal 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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1.2 Cable plan
The cable plan below shows the accessories that can be connected in the connection box.
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2. Installation of the VEX
2.1 Scope of installation
VEX unit The electrical installation for the VEX unit comprises the following connections:
Connection to VEX unit:
●Connection box
●HCE heating coil (electric) (if any)
●HCW heating coil (water) (if any)
●MXCU module for external cooling unit (if any)
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
onterminationandinstructionsforMXCU
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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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 section 1.
2.2.1 Installation requirements and recommendations
Fuses The fuses must be suitable for:
●Short-circuit protection of the unit
●Short-circuit protection of supply cable
●Overload protection of supply cable
Max. rating Maximum fuse rating is 13 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:
●PFI type A breaker that breaks the circuit when a vagrant
current with DC content (pulsating DC) in accordance with
EN 61008.
●The circuit breakers must be marked with the following sym-
bol:
●Cutout time must be max. 0.3 s.
When there is cur-
rent leakage A leak current of up to 100 mA can be generated.
Electrical wiring
VEX type Motor Voltage Dimensioned power con-
sumption
VEX320C/330C/330H -1 1 x 230 V + N + PE 3.1 A
VEX320C/330C/330H -2 1 x 230 V + N + PE 5.3 A
Short-circuit current Maximum short circuit current (lcu), in accordance with EN60947.2 is 10 kA.
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This manual suits for next models
2
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