System air IV Smart AC Manual

Installation, Operation and Maintenance instruction EN
IV Smart Centrifugal induction fan AC
IV Smart Centrifugal induction fan EC
IV Smart Centrifugal induction fan EC CO

Table of content
1 Introduction .......................................................... 1
1.1 Product description ......................................1
1.2 Intended use ..............................................1
1.3 Document description...................................1
1.4 Product overview.........................................1
1.5 Name plate ................................................2
1.5.1 Type designation ............................. 2
1.6 Product liability............................................ 2
2 Safety .................................................................2
2.1 Safety definitions......................................... 2
2.2 Safety instructions ....................................... 2
2.3 Personal protective equipment ....................... 3
3 Transportation and storage ...................................... 3
4 Installation............................................................ 4
4.1 To do before the installation of the
product......................................................4
4.2 To install the product .................................... 4
4.3 IV Smart CO controller..................................4
4.3.1 To set the minimum fan speed for
operation during a low CO
concentration.................................. 4
4.3.2 The Function test & warm-up .............4
4.3.3 The automatic fan speed control
function ......................................... 4
4.3.4 Fault alarm function ......................... 5
4.3.5 CO alarm function............................ 5
5 Electrical connection............................................... 6
5.1 To do before the electrical connection .............. 6
5.2 To connect the product to the power
supply.......................................................6
5.3 Speed controller for AC motors....................... 6
5.4 Speed controller for EC motors....................... 6
5.5 To install motor protection for AC
motors ......................................................6
5.6 Motor protection for EC motors ....................... 6
6 Commissioning ..................................................... 7
6.1 To do before the commissioning......................7
6.2 To do the commissioning............................... 7
7 Operation.............................................................7
7.1 To start a product with an AC motor ................. 7
7.2 To start a product with an EC motor ................. 7
7.3 To stop the product ......................................7
7.3.1 To stop the product in an
emergency..................................... 7
8 Maintenance......................................................... 8
8.1 Maintenance schedule.................................. 8
8.2 To clean the product..................................... 8
8.3 Spare parts ................................................ 8
9 Troubleshooting..................................................... 9
10 Disposal........................................................... 11
10.1 To disassemble and discard the parts of the
product.................................................... 11
11 Warranty .......................................................... 11
12 Technical data ................................................... 12
12.1 Technical data overview .............................. 12
12.2 Product dimensions ................................... 12
12.3 Wiring diagrams ........................................ 13
12.3.1 Wiring diagrams for AC
motors ........................................ 13
12.3.2 Wiring diagrams for EC
motors ........................................ 13
12.3.3 0-10 V speed control options IV
Smart EC and IV Smart EC
CO ............................................. 14
12.3.4 Wiring overview for CO control
unit............................................. 15
12.3.5 Wiring diagrams for speed
controller for AC motors .................. 16
12.3.6 Wiring diagrams for speed
controllers for EC motors................. 18
12.3.7 Wiring diagrams for ON/OFF
controls for EC motors .................... 20
13 EU Declaration of Conformity................................ 21
14 UKCA Declaration of Conformity............................ 22

1 Introduction
1.1 Product description
The product is a centrifugal jet fan with a galvanized steel
casing. The product has integrated ceiling mounting brackets.
The IV Smart AC fan is supplied with 2 AC motors. The IV
Smart EC fan is supplied with 2 EC motors and an integrated
speed potentiometer.
The IV Smart CO fan is supplied with 2 EC motors and a car-
bon monoxide control unit.
1.2 Intended use
The IV Smart fans are applicable for installation indoors in
underground or aboveground garages. The product is
intended for transportation of clean air with a maximum tem-
perature of 55 °C.
The product is not applicable for transportation of air that
contains explosive, flammable or aggressive media. The
product is not applicable for locations where there is a risk of
explosion.
1.3 Document description
This document contains instructions for installation, operation
and maintenance of the product. The procedures must be
done by approved personnel only.
Speak to Systemair for more information on how to install the
product in different installation locations.
1.4 Product overview
2
5
4
1
3
6
1. Casing
2. Mounting bracket
3. Fan impeller
4. Motor
5. Connection box (IV Smart AC and IV Smart EC CO has 1 single connection box)
6. Name plate
1

1.5 Name plate
1
7
8
9 11 12
2 3 4 5 6
13
10
1. Type designation: Product name, dimension and motor
type. Refer to 1.5.1 Type designation page 2.
2. Current, A
3. Input power, W
4. Frequency, Hz
5. Certifications
6. Scannable code1
7. Voltage, V
8. IP class, enclosure class
9. Insulation class
10. Serial number: part number/production number/produc-
tion date
11. Nominal fan speed
12. Weight, kg
13. Country of production
Note:
The data on the name plate applies to “standard air” that is
specified in the standard ISO5801.
1.5.1 Type designation
Product name IV Smart AC IV Smart EC IV Smart EC CO
Motor type AC: 230 V, 2 pole, 1-phase EC: Electronically commuted
230 V, 1–phase
EC: Electronically commuted
230 V, 1–phase
1.6 Product liability
Systemair is not liable for damages that the product causes
in these conditions:
• The product is incorrectly installed, operated or
maintained.
• The product is repaired with parts that are not original
spare parts from Systemair.
• The product is used together with accessories that are not
original accessories from Systemair.
• The product is used without motor protection.
2 Safety
2.1 Safety definitions
Warnings, cautions and notes are used to point out specially
important parts of the manual.
Warning
If you do not obey these instructions,
there is a risk of death or injury.
Caution
If you do not obey these instructions,
there is a risk of damage to the product,
other materials or the adjacent area.
Note:
Information that is necessary in a given situation.
2.2 Safety instructions
Warning
Read the warning instructions that follow
before you do work on the product.
2
1. Operate a mobile device to scan the scannable code and go to the Systemair documentation portal for more documentation and
document translations.

• Read this manual and make sure that you understand the
instructions before you do work on the product.
• Obey local conditions and laws.
• The ventilation contractor and the operator are responsi-
ble for correct installation and intended use.
• Keep this manual at the location of the product.
• Do not install or operate the product if it is defective.
• Do not remove or disconnect safety devices.
• Make sure that you can read all warning signs and labels
on the product when it is installed. Replace labels that
have damage.
• Only permit approved personnel to work on the product
and to be in the adjacent area during all work on the
product.
• Make sure that you know how to stop the product quickly
in an emergency.
• Use applicable safety devices and personal protective
equipment during all work on the product.
• Before you do work on the product, stop the product and
wait until the fan impeller stops. Make sure that there is no
voltage on the motor terminals.
• If the maintenance is not correctly and regularly done,
there is risk of injury and damage to the product.
• Only do the maintenance as given in this manual. Speak
to Systemair technical support if other servicing is
necessary.
• Always use spare parts from Systemair.
• Sound levels exceeding 70 dB(A) may occur depending
on model and size. Visit www.systemair.com for more de-
tailed information about your product.
• The product is not to be used by persons, including chil-
dren, with reduced physical, sensory or mental capabil-
ities, or lack of experience and knowledge, unless they
have been given supervision or instruction.
• Do not allow children to play with the device.
2.3 Personal protective
equipment
Use personal protective equipment during all work on the
product.
• Approved eye protection
• Approved protective helmet
• Approved hearing protection
• Approved protective gloves
• Approved protective shoes
• Approved work clothing
3 Transportation and
storage
Warning
Make sure that the product does not
become damaged or wet during
transportation. A damaged or wet
product can cause fire or electric shock.
• Before you move the product to the installation location,
examine the packaging for damages.
• Do not move the product by the cables, terminal box, fan
impeller, protection grille, inlet cone or silencer.
• If lifting equipment is used, make sure that the lifting
equipment can hold the weight of the product. Refer to the
name plate for information. Do not lift the product by the
packaging.
Warning
Do not walk below a lifted product.
• Keep the correct side of the packaging up during
transportation. Refer to the arrows on the packaging.
• Load and unload the product carefully.
• Keep the product in a dry and clean location during
storage. Make sure that the ambient temperature during
storage is between –10 and +30 °C. A stable ambient
temperature prevents damage from condensation.
• Keep the product in storage for maximum 1 year.
3

4 Installation
4.1 To do before the installation
of the product
• Make sure that you have the necessary installation
accessories:
– The product can only be installed indoors, in garages.
The product is not connected to a duct system.
• Refer to installation material with fire resistance rating for
the installation location.
• Examine the packaging for transportation damage and re-
move the packaging from the product carefully.
• Examine the product and all components for damage.
• Make sure that the motor effect and the fan performance
agrees with the expectations at the installation location.
• Make sure that the information on the name plate and the
motor name plate agrees with the operation conditions.
• Install the product in a location where there is space for
commissioning, troubleshooting and maintenance.
• Make sure that the installation location is clean and dry,
for full safety during electrical work.
• Make sure that the installation surface has sufficient ca-
pacity to hold the weight of the product.
• Refer to the airflow direction arrows on the name plate or
on the product to install the product in the correct position.
• Make sure that all cable glands are tight against the ca-
bles to prevent leaks.
4.2 To install the product
Note:
The product must be installed horizontally.
Note:
Make sure that there is free space around air inlets and air
outlets.
1Attach the mounting bracket integrated in the fan casing
to the inner ceiling with 4 screws. The product can also
be installed in the ceiling using pendulum bars or wires.
Pendulum bars and wires are not supplied by Systemair.
4.3 IV Smart CO controller
Note:
Obey local laws and regulations for CO control.
The IV Smart EC CO fan is equipped with a controller unit for
carbon monoxide control. If a CO sensor is installed, the CO
sensor will measure the CO concentration level in the air and
adjust the 0-10 V control signal to the EC fans to obtain a low
level of CO concentration in the ventilated area.
The CO controller has an alarm function which is triggered
based on pre-set CO alarm trigger values and time specifica-
tions according to DIN EN 50291-1.
Note:
The CO sensor is sold separately.
4.3.1 To set the minimum fan speed
for operation during a low CO
concentration
1Set the minimum fan speed through the 0-10 V potenti-
ometer in speed ranges between 2-4 V. The potentiome-
ter is found in the connection box.
4.3.2 The Function test & warm-up
A Function test starts automatically when the supply voltage
and the potential free contact are connected correctly.
A successful end of the Function test is indicated by:
• the green operation indicator is permanently on.
• the yellow fault alarm indicator is on for 2 seconds and
then off.
• the red CO indicator alarm is on for 2 seconds and then off.
If a potential contact is not connected to X6 and X7, the test
will not complete, refer to 12.3.4 Wiring overview for CO con-
trol unit page 15.
During the product warm-up, 6.5 minutes, the product is on
low speed. No CO level measurements or alarms are set off
during the warm-up. When the warm-up completes, the prod-
uct will automatically adjust the fan speed to the CO concen-
tration level.
4.3.3 The automatic fan speed
control function
The product will operate on the minimum fan speed that is
set on the internal 0-10 V potentiometer at CO concentration
levels to a maximum of 15 ppm. The fan speed will increase
and decrease in relation to the CO concentration level in the
installation area and will reach maximum speed at a CO con-
centration level of 50 ppm. If a sensor fault is detected, the
product will operate at maximum speed in order to remove in-
creased CO concentration in the air.
4

Specification for the automatic speed control function:
CO
concentration
Speed specifica-
tion values
Function
CO level below
15 ppm
0 V Fan standstill
CO = 15 ppm 2 V...4 V (min.) Speed is in rela-
tion to set value
on the internal 0-
10V potentimeter
CO = 15-50 ppm Min....10 V The linear curve
analogue to the
CO connection
starts with the
minimum fan
speed through to
the maximum fan
speed.
CO level = 50
ppm or higher
10 V Maximum fan
speed
Fault detected 10 V Maximum fan
speed
4.3.4 Fault alarm function
The fault alarm is triggered in case of fan failure or sensor
failure. The alarm is controlled by a potentially free contact
which can be connected to an external alarm device, for ex-
ample an alarm siren or an alarm light.
The illustrations shows the switching states of the alarm con-
tact (with control terminals which can be used to connect an
external alarm).
7.1
7.2
7.3
7.1
7.2
7.3
A B
A. State of the alarm contact when voltage free
B. State of the alarm contact when operating OK
Failure required
for activation of
fault alarm
Alarm trigger
point
Required value
for automatic re-
set of the alarm
Fan failure 130 rpm 180 rpm
Sensor failure 14–20 mA ≥ 3.0
mA
14–20 mA ≥ 3.5
mA
4.3.5 CO alarm function
The CO alarm is triggered based on the time specifications of
DN 50291–1 and the listed trigger points:
CO alarm trigger points:
CO concentra-
tion required for
activation of CO
alarm
Alarm trigger
time
Required CO
concentration
for automatic re-
set of the alarm
up to 30 ppm not triggered No alarm reset
required
50 ppm triggered after 75
minutes
< 40 pmm
100 ppm triggered after 25
minutes
< 40 pmm
300 ppm triggered after 1
minute
< 40 pmm
To do in the event of an alarm:
Problem Possible cause Trouble-
shooting
CO alarm is
active
Critical CO con-
centration is
detected
If car engines are
running in the in-
stallation area -
turn off the car
engine.
If no car engines
are running,
leave the area
immediately and
contact a local
emergency gas
central. Ensure
that a gasfitter is
informed to in-
spect possible
gas line damages.
Fault alarm is
active
Fan or power
supply is out of
function (alarm
triggers after 10
seconds)
Contact
Systemair
Short circuit or
break in sensor
cable (alarm trig-
gers after 3
seconds)
Contact
Systemair
5

5 Electrical connection
5.1 To do before the electrical
connection
• Make sure that the electrical connection agrees with the
product specification on the motor name plate.
• Make sure that the environment for electrical connection
is clean and dry.
• Make sure that the wiring diagram that is included with the
supply of the product agrees with the terminals in the con-
nection box.
5.2 To connect the product to the
power supply
• Complete the electrical connection for the motor. Refer to
the motor wiring diagram that is included with the product.
• Make sure that the cross section of the protective earthing
is equal to or larger than the cross section of the phase
conductor.
• Install a circuit breaker in the permanent electrical installa-
tion, with a contact opening of a minimum 3 mm at each
pole.
• If a residual current device (RCD) is installed, make sure
that it is an all-current sensitive RCD. Consider if the prod-
uct has a frequency converter, uninterruptible power sup-
ply (UPS), or an EC motor. EC motors have a leakage
current to earth that is <=3.5 mA.
5.3 Speed controller for AC
motors
Note:
The speed controller alternatives are different for different
motor types. Make sure that your motor is compatible with
the speed controller type before you use it.
The speed can be controlled by voltage reduction using a
transformer. It is also possible to control the fan speed with
frequency converter if the installed frequency converter has
built in all-pole sine filter and shielded cables are not needed.
5.4 Speed controller for EC
motors
• EC motors are controlled through a stepless 0–10 V signal.
• Do not use power supply for the speed controller.
• Refer to 12.3 Wiring diagrams page 13 and the instruction
manual for the external speed controller.
5.5 To install motor protection for
AC motors
• If the product has an built in motor protection, reset by dis-
connecting the product from power for 60 seconds.
• If the motor has temperature monitors such as thermal
contacts (TK) or thermistors lead out into the terminal box,
these must always be connected in the control circuit us-
ing appropriate motor protection.
• Make sure that an overheated motor cannot start again
automatically when it becomes cool.
• Install the motor cables and the temperature monitor apart.
• If the motor does not have temperature monitors, install a
motor protection switch.
5.6 Motor protection for EC
motors
EC motors have an integrated motor protection. Reset the
motor protection by disconnecting the fan from power supply
for 60 seconds.
6

6 Commissioning
Caution
• If strong vibrations occur during
commissioning, immediately increase
or decrease the fan speed until the
vibrations are decreased. Continuous
strong vibrations can cause damage
to components.
• Do not increase the fan speed to a
higher rpm value than the maximum
value that is given on the name plate.
The commissioning report is found at www.systemair.com.
6.1 To do before the
commissioning
• Make sure that the installation and electrical connection
are correctly done.
• Visually examine the product and accessories for damage.
• Make sure that the safety devices are correctly installed.
• Make sure that there are no blockages in the air inlet and
the air outlet.
• Make sure that installation material and unwanted objects
are removed from the product and the ducts.
6.2 To do the commissioning
1Set the installed safety switch in the OFF position.
2If it is possible to get access to the fan impeller, do the
steps that follows:
a. If it is necessary, remove parts of the installation.
b. Turn the fan impeller by hand and make sure that it
turn easily.
c. Record the result in the commissioning report.
3Make sure to turn the product in a direction that agrees
with the related arrow on the product.
a. Record the result in the commissioning report.
4If you removed parts of the installation to get access to
the fan impeller, install the removed parts again.
5Set the installed safety switch in the ON position.
6Start the product.
7Set the minimum operation speed.
8Increase the operation speed gradually to the maximum
operation speed.
a. Examine the vibrations in the casing and the bearing
areas at all speed levels.
b. Make sure that the vibrations agree with the specifi-
cations in DIN ISO 14694.
c. Make sure that none of the speed levels cause un-
wanted noise in the product.
d. Record the result in the commissioning report.
9Record the necessary data in the commissioning report.
7 Operation
Caution
EC motors must be set to ON/OFF via
the control input. To stop the product via
mains supply decreases the life time of
the motor. Systemair recommends to
install external speed controller for easy
access to control the input signal.
7.1 To start a product with an AC
motor
1Set the installed safety switch in the ON position.
2Install the external speed controller. Refer to the instruc-
tion manual for the installed speed controller.
7.2 To start a product with an EC
motor
1Make sure that the 0–10 V signal is set to “0” with the
speed controller.
2Set the installed safety switch in the ON position and wait
5 seconds.
3Adjust the fan speed with the 0–10 V signal speed con-
troller. If an external speed controller is not installed, ad-
just the fan speed directly with the integrated
potentiometer.
7.3 To stop the product
1Set the installed speed controller in the OFF position.
Refer to the instruction manual for the installed speed
controller.
2Set the installed safety switch in the OFF position.
7.3.1 To stop the product in an
emergency
• Set the installed safety switch in the OFF position.
7

8 Maintenance
Warning
Set the installed safety switch in the OFF position before you do the maintenance unless the instructions tell
you differently. Make sure that the safety switch is not accidentally set in the ON position.
8.1 Maintenance schedule
The intervals are calculated from continuous operation of the product.
Maintenance task Usual operation
conditions
Unusual operation conditions. 1
Each 6
months
Each
year
Each 3
months
Each 6
months
Each
year
Visually examine the product and its components for damage,
corrosion and dirt.
X X
Examine the fan impeller for damage and imbalance. X X
Clean the product and the ventilation system. X X
Do a check of all fasteners and make sure that they are fully
tightened.
X X
Make sure that the product and its components are correctly
operated.
X X
Measure the power consumption and compare the result with
the information on the name plate.
X X
If vibration dampers are installed, make sure that they operate
correctly and examine them for damage and corrosion.
X X
Make sure that the electrical protective equipment and the me-
chanical protective equipment operates correctly.
X X
Make sure that you can read the name plates of the product. X X
Examine all cable connections for damage. Make sure that
the cable glands are tight against the cables.
X X
If flexible connections are installed, examine them for damage. X X
1. The unusual operation conditions are classified as follows: If a stable ambient temperature is higher than 30 °C or lower than -10° C, if the
temperature changes are large or if very contaminated air is transported.
8.2 To clean the product
Caution
• Do not clean the product with a high-
pressure washer.
• Do not clean the product with steel
brushes or sharp objects.
• Do not bend the fan impeller blades.
• Be careful not to move the balance
weights on the fan impeller.
• Remove dirt from the fan and the duct.
• If access to the fan impeller is possible, clean the fan im-
peller with a moist cloth or soft brush.
8.3 Spare parts
• For information about spare parts, send an e-mail to
[e-mail].
• For more information about spare parts, contact Systemair
support.
• Always use spare parts from Systemair.
• When you send an order for spare parts, include the serial
number of the product. The serial number is found on the
name plate.
8

9 Troubleshooting
Note:
If you cannot find a solution to your problem in this section, speak to Systemair technical support.
Problem Cause Solution
The product does not operate smoothly.
The fan impeller is not correctly
balanced.
Speak to Systemair technical support.
There is dirt on the fan impeller. Clean the fan impeller carefully. Refer
to 8.2 To clean the product page 8.
The fan impeller has damages or
deformations because the transported
air contains aggressive media.
Speak to Systemair technical support.
The fan impeller does not turn in the
correct direction.
Make sure that the electrical connection
is correctly done.
The fan impeller has deformations
because of too high temperatures. • Replace the fan impeller.
• Make sure that the temperature of
the transported air is not higher than
the value on the name plate.
There are unusually strong vibrations in
the product or the duct system.
Make sure that the product is correctly
installed. Do a check of the duct system.
The product is operated in a resonant
frequency range.
Increase or decrease the fan speed
until the product operates smoothly.
Refer to 6 Commissioning page 7.
The air output is not sufficient.
The fan impeller does not turn in the
correct direction.
Make sure that the electrical connection
is correctly done.
The electrical connection is not
correctly done.
Make sure that the electrical connection
agrees with the wiring diagrams.
The air pressure is too low because of
incorrect installation.
Do the necessary changes in the duct
system and installed components to
increase the air pressure. Refer to 6
Commissioning page 7.
The airflow shutters are closed or not
fully open.
Adjust the airflow shutters.
There is blockage in the air inlet or the
duct system.
Remove the blockage.
The product is not applicable for the
installation location.
Make sure that the product is applicable
for the installation location.
The motor power is decreased because
of too high temperature in the motor.
Note:
This is applicable for EC motors only.
• Do a check of the ambient
temperature.
• Make sure that the space around the
motor is sufficient to keep the
temperature down.
There is unusual noise when the
product starts or operates.
There is strain in the connections of the
duct system.
Loosen the connections, align the parts
of the duct system correctly and tighten
the connections.
9

Problem Cause Solution
Thermal contacts, PTC or resistors are
released.
The fan impeller does not turn in the
correct direction.
Make sure that the electrical connection
is correctly done.
A phase loss occurred. If the motor is a 3-phase motor, make
sure that no phase is missing.
Note:
This is not applicable for EC motors.
The motor is overheated. • Do a check of the motor cooling
impeller.
• If it is possible, measure the
resistance to do a check of the motor
winding.
The capacitor is not connected or not
correctly connected.
Note:
This is not applicable for EC motors
or 3–phase AC motors.
Connect the capacitor correctly. Refer
to the included motor wiring diagram.
There is blockage in the motor. Speak to Systemair technical support.
The fan speed does not get the nominal
value.
Defective motor winding. If it is possible, measure the resistance
to do a check of the motor winding.
The speed control is not correctly set. Set the speed control correctly.
The fan impeller cannot turn freely
because of mechanical blockage.
Remove the blockage.
Phase loss occurs. If the motor is a 3-phase motor, make
sure that no phase is missing.
The motor does not rotate.
A component in the power supply is
defective.
Do a check of the power supply.
Replace defective components and
connect the power supply again.
The electrical connection is not
correctly done.
Make sure that the electrical connection
agrees with the wiring diagrams.
The motor protection is released
because the motor is overheated.
Let the motor become cool. Reset the
motor protection. Find the cause of the
overheated motor.
A phase loss occurred. If the motor is a 3-phase motor, make
sure that no phase is missing.
The electronic components or the motor
is overheated.
The motor is overloaded or the ambient
temperature is too high.
Let the motor become cool. Reset the
motor protection. Find the cause of the
overheated motor.
The motor is overloaded. Make sure that the product is applicable
for the installation location.
The ambient temperature is too high. Make sure that the product is applicable
for the installation location.
The cooling of the product is not
sufficient.
Make sure that the space around the
motor is sufficient to keep the
temperature down.
10

10 Disposal
The product follows the WEEE directive. This symbol on the
product or the packaging of the product shows that this
product is not domestic waste. The product must be recycled
at an approved disposal location for electrical and electronic
equipment.
10.1 To disassemble and discard
the parts of the product
1Disconnect and disassemble the product in the opposite
sequence of electrical connection and installation.
2Recycle the product parts and the packaging at an appli-
cable disposal location.
3Obey the local and national requirements for disposal.
11 Warranty
For warranty claims, send a written maintenance plan and
the commissioning report to Systemair. The warranty is only
applicable for these conditions:
• The product is correctly installed and operated.
• Motor protection is used.
• The instructions in the data sheets are obeyed.
• Maintenance instructions are obeyed.
• A product that is not operated continuously is operated for
a minimum of 1 hour each month.
11

12 Technical data
12.1 Technical data overview
Maximum temperature of transported air,
°C
Refer to the data sheet in the online catalogue at www.systemair.com.
Maximum ambient temperature, °C
Sound pressure, dB
Corrosion class
IP class
Voltage, current, frequency, enclosure
class, weight Refer to the name plate. Refer to 1.5 Name plate page 2 for more information.
Motor data Refer to the motor name plate or the technical documentation from the motor
manufacturer.
12.2 Product dimensions
Note:
If the unit of measure is not specified, the dimensions are given in millimetres.
J
K
I
CB
D
H
A
F
E
G
L
A B C D ØE F G H I J K L
IV Smart AV,
IV Smart EC,
IV Smart CO
169 173 360 760 8 140 36 800 700 150 554 67
12

12.3 Wiring diagrams
Abbreviation in wiring diagram Cable colour
RD Red
YE Yellow
BU Blue
WH White
GN Green
BN Brown
BK Black
GR Grey
GY Green/Yellow
12.3.1 Wiring diagrams for AC motors
IV Smart AC, 230 V, 2 pole, 1-phase
N
BU YE/GN
L
BK
A B C
A. Power supply, phase, 230 V AC 50—60 Hz
B. Neutral
C. Earth
12.3.2 Wiring diagrams for EC motors
Note:
The connection cables of the 2 motors are located in the terminal boxes.
IV Smart EC, 230 V, 1–phase
Mains supply
A. Mains supply, phase
B. Neutral
C. Earth
BK BK BU BU YE/GN
YE/GN
NL
A B C
Connection box speed control
A. +10 V = Voltage output +10 V max 1.1 mA
B. 0-10 V = Control output
C. Earth
D. Taco signal motor 1
E. Taco signal motor 2
RD RD YE YE
0-10 V TACHO/
MOTOR 1
TACHO/
MOTOR 2
+10 V
BU BU WH WH WH WH
A B C D E
13

12.3.3 0-10 V speed control options IV Smart EC and IV Smart EC CO
The wiring diagram shows connection possibilities for different speed control options. The available speed control options are
explained in the list that follows.
IV Smart EC
4
7
15V
7
6
10K
1-10V
4
7
7
6
4
12V
D
A B
C E
A. Connection for maximum speed
B. Connection for adjustable speed using an external potentiometer:
– 10 V > n = maximum
– 1 V > n = minimum
– <1 V > “n = fan stops
C. Connection for adjustable speed via PWM (pulse with modulation) (1–10 kHz):
– 100% PWM > n*maximum
– 10% PWM > n*minimum
– <10% PWM > n = 0
D. Imax (maximum current) = 10 mA
E. Connection if using internal potentiometer (B)
IV Smart EC CO
3.15
AT
47K680R
AC2 AC1
4 3
2 1
N P
TACHO GND 10V/PWM +10V N L
5 4 7 6 1 3 2
47K
1 F
ZMM47
RD GN/YE BUWH BNYEBU
A B D E F GC
A. Tacho output: open collector, 1 pulse per revolution, electrically insulated, Isink_max=10mA
B. Ground + connection for control interface
C. Control input, 0-10 V or PWM, electrically insulated
D. Voltage output, 10 V/1.1 mA, electrically insulated
E. Earth
F. Neutral
G. Mains supply, 230 V AC, 50-60Hz, see type plate for voltage range
14

12.3.4 Wiring overview for CO control unit
IV Smart CO, 230 V, 1–phase
X5.1
X5.2
X5.3
X5.4
10V
L
0-10V
L1
HALL
GND
4-20mA
GND
24V
X4.1
X4.2
X4.3
X4.4
10V
0-10V
HALL
GND
X3.3 X3.2 X3.1
N PE L
X2.3 X2.2 X2.1
X1.3 X1.2 X1.1
N
PE
L
N
PE
L
X6.3 X6.2 X6.1
X7.3 X7.2 X7.1
L N
N
L1
C
D
A
B
E
15

A. Fan 2
B. Fan 1
C. CO sensor
D. Alarm siren
E. Mains supply
Electrical connections
Name Connection Designation Designation
X1 1. L X1 = mains supply
connection
Supply connection to the
control unit.
2. N
3. PE
X2 1. L X2 = FAN 1 supply voltage
connection
Supply voltage for fan 1. The
voltage corresponds to the
supply voltage of the control
unit.
2. N
3. PE
X3 1. L X3 = FAN 2 supply voltage
conntection
Supply voltage for fan 2. The
voltage corresponds to the
supply voltage of the control
unit.
2. N
3. PE
X4 1. 10 V 4X = speed control connec-
tion FAN 1
Control connection to Fan 1.
Speed specification and
speed feedback. If the fan
has a 10 V output, it can be
connected to terminal X4. 1.
2. 0–10 V
3. HALL
4. GND
X5 1. 10 V 5X = speed control connec-
tion FAN 2
Control connection to Fan 2.
Speed specification and
speed feedback. If the fan
has a 10 V output, it can be
connected to terminal X4. 1.
2. 0–10 V
3. HALL
4. GND
X6 1. 24 V X6 = SENSOR
CONNECTION
Connection for CO sensor
supply connection and
measure signal connection.
2. 4–20 mA
3. EARTH
X7 1. NC X7 = ALARM CONNECTION Potential-free alarm connec-
tion option for an alarm siren
or other auxiliary device.
2. COM
3. NO
12.3.5 Wiring diagrams for speed controller for AC motors
Note:
The selection of electrical accessories must be done in line with the technical parameters of the product.
RE
Manual 5-step transformer.
RE 1,5
N N N
RE 3 RE 5 RE 7
~ ~
DCBA
16

A. Relay connection. There is always 230 V between line and neutral when the transformer knob is in one of the positions 1–5.
B. Supply voltage
C. Earth
D. Fan
REE — Thyristor
RRE 1 and RRE 2 - Surface mounting or with flush mounting
casing included.
L
(L)
N
N N
L
(L)
N
N N
MM
RRE 4 - Surface mounting.
Note:
Starting currents must be considered when you select the
speed controller type. Products that are used with this
speed controller must have a built-in overheating protec-
tion and must be designed for thyristor speed control.
• L: the connection with cutting function on the speed control.
• (L): the connection without cutting function.
REU
Manual 5-step transformer for high/low speed operation.
Used together with a change-over contact, for example a tim-
er or a thermostat.
REU 1,5
2
1
2 3
3 N N
REU 3 REU 5 REU 7
1 ~
A B C
1. External change-over contact
2. Left selector switch
3. Right selector switch
RTRE
Manual 5-step transformer with motor protection.
N Rt Rt Tk TkN
~ ~
N
A
B C D E F
RTRE 1,5 RTRE 3 RTRE 5
Rt Rt Tk TkNN
~ ~
N
A B C D E F
RTRE 7 RTRE 12
17

A. Relay connection. There is always 230 V between line and neutral when the transformer knob is in one of the positions 1–5.
B. Mains supply
C. Earth
D. Fan
E. Thermostat
F. Motor protection. If the motor protection is not in use, Tk must be looped together.
FRQ5S-E-6A
Frequency converter with built in all pole sine filter and 5-step switch.
NNL1
N
L1
PE
L1 U1 U1 U2 U2
K2
E1
GNDTB
TB
D1
D1
GND
A2
Digital In 1
Analog In 1
10 V
0 1
M
1 ~
U1 U2
PE TB
q
TB
FRQ5S-E-6/10A
222421
BU RD BK
0
1
2
3
5
4
D
C
B
A
A. Contact rating, maximum AC 250 V/2 A
B. Mains supply, 1–phase 208...277 V, 50/60 Hz
C. Motor with internal thermostats
D. OFF/ON
12.3.6 Wiring diagrams for speed controllers for EC motors
Note:
An internal potentiometer is installed on the terminal block from the factory. Remove the internal potentiometer when you use
an external speed controller for the EC fan.
18