Exhausto VEX100CF Series User manual

Guide to Electrical Installation of
VEX150-170 CF with heating coil and EXact2
VEX100CF
ON
Electrical installation........................................Chapter 1 + 2
Original instructions
3005760-2017-05-03 VEX150-170CF-EXact2
EXHAUSTO A/S
Odensevej 76
DK-5550 Langeskov
Tel.: [phone]
Fax: [phone]
[email protected]
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.............................................................9
2.2.1.Installation requirements and recommendations...........................................10
2.2.2.Electrical connections....................................................................................11
2.3. Electrical components.........................................................................................12
2.3.1.Control fuses integrated in VEX 150-160-170 with water heating coil ..........13
2.3.2.Components in the connection box................................................................14
2.4. EXact2 main board...............................................................................................16
2.4.1.Terminal board on Exact2 main board...........................................................16
2.4.2.Connecting shielded cable to MODBUS........................................................17
2.4.3.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 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 air han-
dling unit Do not open the service doors until power has been disconnected at the isolation switch and the fans have stopped.
ON OFF
VEX100H
VEX100V
RD13318-01
No duct connection If one or more of the spigots is not connected to a duct: fit a pro-
tective net to the spigots with a maximum mesh size of 20 mm.
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Information plate The VEX unit rating plate shows:
●VEX unit, type (1)
●production number (2)
1
2
NB: Always have the production number ready when contacting EXHAUSTO A/S.
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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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,
HMI display panel and various accessories that can be connected at the connection
box.
Key to diagram on
the following page Designation Description Supplied by
-A1 Connection box EXHAUSTO
-A2 MCCW, MXCU EXHAUSTO
-F1 Distribution board fuses Customer
-F2 Connection box control fuses EXHAUSTO
-Q1 Distribution board group switch Customer
-Q2 Connection box isolation switch EXHAUSTO
Further info See also section "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:
●MXCU, module for external cooling unit
●CCW, cold water coil
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1.1.1 Connection diagram for supply voltage and connection box
* Not supplied by EXHAUSTO
** 120 Ωterminating resistor
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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 EXact2 Main Board 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 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
●MXCU module for external cooling coil (if any)
●CCW cold water coil (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 for external MXCU cooling
unit 1 on termination and instructions for the
MXCU module
Control for cold water coil MCCW in the cold water coil CCW instructions
External start* below
Circulation pump 1
Closing damper, exhaust air LSA/
LSAR 1
Outdoor air closing damper LSF/
LSFR 1
Fire and AUX IN* 1
and below
* External start, Fire
and AUX IN Note following jumper settings for EXact2 main board
If Then
Fire is used remove the jumper between terminals 20 and 21
AUX IN is used remove the jumper between terminals 22 and 23
EXT start is used remove the jumper between terminals 24 and 25
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.
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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
Isolation switch and
control fuses An isolation switch and control fuses have been integrated in the unit. The control fuses protect internal electrical components from overload and short-circuiting. The
section "Control fuses" indicates the number and size of integrated control fuses.
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:
VEX150-160: PFI type A breaker that breaks the circuit on registering a vagrant
current with DC content (pulsating DC) in accordance with EN
61008.
The circuit breakers must be marked with the following symbol:
VEX170: PFI type B breaker that breaks the circuit on registering a vagrant
current with DC content (pulsating DC) or smooth vagrant current
in accordance with EN 61008.
The circuit breakers must be marked with the following symbol:
●Cutout time must be max. 0.3 s.
Current leakage A leak current of up to 100 mA can be generated.
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2.2.2 Electrical connections
VEX type Voltage[V] Dimensioned power con-
sumption [A] (max. phase
current)
Max. neutral current [A]
VEX150H/150V 3 x 400 V+ N+ PE ~ 50Hz 8,7 15
VEX160H/160V 3 x 400 V+ N+ PE ~ 50Hz 15,5 23,5
VEX170 3 x 400 V+ N+ PE ~ 50Hz 17,5
NB Maximumphasecurrentisthedimensionedcurrentforchoiceofcable.Cableshould
be dimensioned according to maximum neutral current if this is greater than the
maximum phase current.
Short-circuit current Maximum short circuit current (lcu), in accordance with EN60947.2 is 10 kA.
Accessories Accessory types CCW and XCU do not require separate supply cables and can be
directly connected to the VEX control system box.
Terminals (U1, N) ...may only be used with the above mentioned accessories, and can have a 2.0 A
maximum load. A maximum of one CCW/XCU (cooling) can be connected. The EX-
act2 control system prevents both heating and cooling operating at the same time.
Circulation pump The circulation pump can be connected to AHUC. The circulation pump may not
draw more than 2.0 A, and its cable must be dimensioned for a 10 A fuse.
Isolation switch, in-
side Connect supply volt-
age here!
Remove the red cover when
connecting
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2.3 Electrical components
Positioning of elec-
trical components The drawings below show the location of bypass damper motor, motor control, tem- perature sensors and other components.
VEX150-160CF VL
RD13941GB-01
TE-RPTTE2.2 M1
BP1
MC1
MC2
MPT3
MPT1
MPT2 TE2.1
TE1.1
M2 TE1.2
Tice
Exhaust air
Outdoor air
Extract air
Supply air
VEX150-170CF HL
RD13940GB-01
MPT3
MPT2
TE2.1
TE1.1
M2
TE2.2
TE-RPT
TE1.2
MPT1
M1
Tice BP1
Supply air
Exhaust air Outdoor air
Extract air
MC1 MC2
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Component Explanation
M1 Extract air motor
M2 Supply air motor
BP1 Bypass damper motor 1
MC1 Motor control, extract air/exhaust air motor
MC2 Motor control, outdoor air/supply air motor
MPT1 AFC (airflow control)
MPT2 MPTF (pressure drop across filter)
MPT3 DEP (Ice detection in case of pressure drop across counterflow heat
exchanger)
TE1.1 Temperature sensor, extract air
TE1.2 Temperature sensor, exhaust air
TE2.1 Temperature sensor, outdoor air
TE2.2 Supply air temperature sensor
TE-RPT Temperature sensor in return pipe from water heating coil (internal)
Tice Temperature sensor for ice in exchanger
2.3.1 Control fuses integrated in VEX 150-160-170 with water heating coil
VEX size Voltage[V] Fuse for control sys-
tem (1x230V) 2 pole Fuse for MC1 (1x230V) 2 pole Fuse for MC2 (1x230V) 2 pole
VEX150 3 x 400 V+N+PE C-10A C-10A C-10A
VEX160 3 x 400 V+N+PE C-10A C-16A C-16A
VEX170 3 x 400 V+N+PE C-10A
VEX size Voltage[V] Common fuse for MC1 and MC2 (3x400V) 3 pole Total number of fuses
VEX150 3 x 400 V+N+PE 3
VEX160 3 x 400 V+N+PE 3
VEX170 3 x 400 V+N+PE C-20A 2
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2.3.2 Components in the connection box
VEX150-160
Left
A
B
C
D
E
Right
A
B
C
D
E
Pos. Component
A Isolation switch
B Terminal row
C Control fuses
D Power Supply
E EXact2 main board
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VEX170
Left
A
B
C
D
E
Right
A
B
C
D
E
Pos. Component
A Isolation switch
B Terminal row
C Control fuses
D Power Supply
E EXact2 main board
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2.4 EXact2 main board
2.4.1 Terminal board on Exact2 main board
The layout drawing below gives an overview of components (standard + accessory) that can be connected to
the terminal blocks.
Component Terminal board
connection Description
BUS 1 - 4 Bus for external parts
BUS 5 - 8 Bus for external parts
TE... + MVM 9 - 19 Taken together, these terminals constitute IHCW, which is used for con-
trolling the HCW coil.
Fire 20 - 21 BT40, BT50, BT70
Smoke detector or other fire detection switch
AUX IN 22 - 23 Same function as Fire
EXT start 24 - 25 If this is closed, the unit will start up
If this is broken, the unit will stop
LSA 26 - 28 LS, exhaust air closing damper
LSAR, exhaust air closing damper with spring return
LSF 29 - 31 LS, outdoor air closing damper
LSFR, outdoor air closing damper with spring return
Alarm 32 - 34 General alarm
AUX OUT 35 - 36 Reserved for future use
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Component Terminal board
connection Description
Light/CP 37 - 38 Circulation pump
USB USB For service use
DI SPARE TIMERBUTTON2/TIMERBUTTONEU2
AI SPARE CO2/RH
OUT 24 V supply for MLON/MTCP
Service HMI Service HMI Plug for connecting extra HMI panel, see section "Servicing - connection
of extra HMI control panel".
Jumper
JP1 Option for termination, internal BUS
JP2 Termination option, external BUS, see section 1
JP3 BP2/M1 Configuration BP2/M1. Set at the factory.
JP4 BP3/M2 Configuration BP3/M2. Set at the factory.
Web server (accessory)
Web server CN2 Ethernet
Web server CN3: Connection of BMS
Web server JP2 To be terminated if BMS is connected to CN3 (shown as ON).
2.4.2 Connecting shielded cable to MODBUS
Cable type MODBUS requires shielded cable of type 2 x 2 x 0.25 □twinned pair conductors.
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Connection Wires and screen must be connected as shown in the table below
Wire Ste
pAction See
Wires
Symbol:
Twisted
pair
1 Carefully strip the wires - as little as possible
and ensure they do not become damaged/bro-
ken
2Twist 0 V and 24 V wires together as a twisted
pair C
3 Twist A and B wires together as twisted pair D
Thewires must betwistedtogether ascloseto the
terminal as possible - max. distance from the ter-
minal: 1.5 cm.
E
Screen 1 Strip the screen before the cable clamp (F)
2 Fit clamp so that it surrounds the screen and
secures the cable F
3 Take some of the cable shield and run it into
the terminal 0 V connection with the 0 V wire G
2.4.3 Service – connection of additional HMI control panel
An additional HMI control panel connected during servicing overrides the HMI panel
connected to the unit. Refer to the EXact basic instructions for further information.
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