FläktGroup ISYteq Touch 2.1 room controller Installation guide

Brand: FläktGroup

Model: ISYteq Touch 2.1 room controller

Type: Installation guide

INSTALLATION AND MAINTENANCE MANUAL

ISYteq TOUCH 2.1

We reserve the right to make changes without prior notice

FläktGroup DC-10475-GB 2021-10-27_R1

ISYteq Touch 2.1 – Installation and maintenance manual

1. General use of the ISYteq Touch 2.1 ........................................3

2. Mechanical installation.................................................................3

2.1. Space requirements ................................................................................... 3

3. Physical environmental conditions ..........................................3

4. Directives ..........................................................................................3

5. Electrical safety ..............................................................................3

6. Electrical connections ..................................................................4

6.1. Power supply ................................................................................................ 4

6.1.1. Connection to the controller ............................................................. 4

6.1.1.1. Supply terminals of the controller unit ................................... 4

6.1.2. Connection of an external power supply ..................................... 4

6.2. Modbus communication interface ........................................................ 4

6.2.1. Modbus connection ............................................................................. 4

6.2.2. Bus termination ..................................................................................... 4

6.2.3. BIAS (pull-up and pull-down resistors) ........................................ 5

6.2.4. Cable length and type ......................................................................... 5

7. Built-in room-temperature sensor ...........................................5

8. Main menu ........................................................................................5

8.1. Main screen layout ..................................................................................... 5

8.2. Splash screen .............................................................................................. 5

8.3. Access protection .......................................................................................6

8.4. Standby screen ............................................................................................6

8.5. System menu ...............................................................................................6

8.5.1. Information menu (About us) ............................................................7

8.5.2. Menu display settings ..........................................................................7

8.5.2.1. Backlight.............................................................................................7

8.5.2.2. Language .......................................................................................... 8

8.5.2.3. Standby screen ............................................................................... 8

8.5.3. Bypass settings menu ........................................................................9

8.6. Modbus parameter setting menu .......................................................... 9

8.6.1. Modbus parameters .......................................................................... 10

8.7. Operating modes (proﬁles) .................................................................... 10

8.7.1. Bypass function ....................................................................................11

8.8. Operation types of the controller .......................................................... 11

CONTENTS

8.9. Setpoint menus ...........................................................................................11

8.9.1.2. Temperature setpoint heating with offset cooling ............ 12

8.9.1.3. Temperature setpoint cooling with offset heating ............ 12

8.9.1.4. Separate Temperature setpoint for heating & cooling .... 12

8.9.1. Changing the room temperature setpoint ................................. 12

8.9.1.1. Single temperature setpoint (heating & cooling) .............. 12

8.9.1.5. Relative temperature setpoint ................................................. 13

8.9.2. Changing the air volume ﬂow rate ............................................... 13

8.9.2.1. Supply air volume ﬂow .............................................................. 13

8.9.2.2. Extract air volume ﬂow .............................................................. 13

8.9.3. Changing the duct pressure ............................................................14

8.9.3.1. Supply air duct pressure ............................................................14

8.9.3.2. Extract air duct pressure ...........................................................14

8.9.4. Changing the fan speed ....................................................................14

8.9.4.1. Supply air fan speed ....................................................................14

8.9.4.2. Extract air fan speed ...................................................................14

8.9.5. Changing the air quality target value ...........................................14

8.9.6. Changing the humidity setpoint .................................................... 15

8.9.6.1. Single setpoint for humidifying & dehumidifying .............. 15

8.9.6.2. Setpoint for humidifying with offset for dehumidifying ... 15

8.9.6.3. Setpoint for dehumidifying with offset for humidifying ... 16

8.9.6.4. Separate setpoint for humidifying & dehumidifying ........ 16

8.9.7. Changing the minimum amount of outdoor air ........................17

8.10. Alarms ............................................................................................................17

8.10.1. Acknowledging alarms ......................................................................17

8.10.2. Alarm symbols .....................................................................................17

8.10.3. Modbus communication error ....................................................... 18

8.10.3.1. No connection ............................................................................... 18

8.10.3.2. Modbus register not readable ................................................. 18

8.10.4. Error during parameter initialization ............................................ 18

8.10.5. The controller unit was switched off externally ...................... 18

9. List of all used symbols ............................................................. 19

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ISYteq Touch 2.1 – Installation and maintenance manual

1. GENERAL USE OF THE ISYTEQ TOUCH 2.1

The control panel has a 2.3” (5.84 cm) display with a touch sensitive

colour screen. The control panel is connected to the controller via a

communication interface (Modbus). Power can be supplied from the

controller or from an external power supply. The operating panel can

be installed using either a standard ISO ﬂush-mounted or a surface-

mounted box. With the ISYteq Touch 2.1 operating panel all setpoints

available on the controller can be changed easily and quickly. The

number of the displayed setpoint menus depends on the equipment of

the controller.

2. MECHANICAL INSTALLATION

The control panel is mechanically designed for indoor installation in a

standard ﬂush box. If the room temperature is to be measured via the

integrated sensor in the control panel, an installation with a standard

surface-mounted device box is more suitable.

2.1. SPACE REQUIREMENTS

3. PHYSICAL ENVIRONMENTAL CONDITIONS

The control panel is speciﬁed for the following environmental

conditions.

#Feature Specification Note(s)

1Operating

temperature

0...40°C

2Storage

temperature

-30...60°C

3Humidity 10–95% RH No condense

4Vibration EN-60721-3-3 Test method: (3M5)

5UV radiation Not direct sunlight The operator panel is intended

to be mounted inside

4. DIRECTIVES

#Feature Specification Note(s)

1CE marking directive 93/68/EEC

2Low voltage directive 2014/35/EU Valid from 2016-04-20

3Machinery directive 2006/42/EC

4EMC directive

(Electromagnetic

compatibility)

2014/30/EU Valid from 2016-04-20

5Restriction of

Hazardous substances

(RoHs) directive

2002/95/EC

5. ELECTRICAL SAFETY

#Feature Specification Note(s)

1Installation class Class 3 l = Devices with PE

II = Insulation with plastics

III = under < 50VDC devices

2Overvoltage

category

CAT 1 1 = lsolating device

2 = Power from a wall socket

3 = Power from the fuse panel

4 = Power from distribution

lines

3Pollution degree Class 2 1 = Clean room or sealed

devices

2 = Office environment

3 = Unheated rooms

4 = Outdoor use

8.67 cm

71 mm

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ISYteq Touch 2.1 – Installation and maintenance manual

6. ELECTRICAL CONNECTIONS

The following ﬁgure shows the connections for the power supply

and the Modbus interface with switchable termination resistor. The

connection and meanings of the individual terminals are described by

the reference number in the following table.

Figure 1: Terminals and terminating resistor

Reference Terminal Pin Remark

1X6.1 VDD 12-48 VDC, Power consumption 0.5 W

2X6.2 A+ Modbus RX+/TX+

3X6.3 B- Modbus RX-/TX-

4X6.4 GND GND for power supply

5X7 Unused

6–Bus

term

Switchable termination for Modbus

(RS485)

6.1. POWER SUPPLY

The power supply of the operating panel can be provided either by the

controller or by an external power supply (separate power supply unit).

6.1.1. CONNECTION TO THE CONTROLLER

If the control panel is to be supplied with power directly from the

controller, the power supply cable must be connected as shown in the

wiring diagram (Figure 2).

6.1.1.1. Supply terminals of the controller unit

Reference Terminal Pin Remark

1X5 VDD

2X5 GND

120 Ω

BACnet MS/TP

Modbus Master

Modbus Slave

G24

X5 X4

A+ B- Vdd GND

GND2

GND1

GND2

GND1

1 213W2

0,22 mm2

3W3

0,75 mm2

HMI2

3A2

Figure 2: Wiring diagram power supply and Modbus connections.

6.1.2. CONNECTION OF AN EXTERNAL POWER SUPPLY

A separate power supply unit for the operating panel should have at

least the following speciﬁcations:

• DC output: 12-48 VDC, 0.5 W

6.2. MODBUS COMMUNICATION INTERFACE

The operating panel communicates with the controller via Modbus

protocol. The controller is already preconﬁgured at the factory with the

following Modbus settings:

• Protocol: Modbus RTU (RS 485, 2-wire connection, Master)

• Baud rate: 19200

• Stop bits: 2

• Parity: None

• Data bytes: 8

• Controller unit address: 1

Note: Normally, the Modbus settings of the controller as well as

for the operating panel are set at the factory so that the system is

immediately ready for operation if the cables are connected correctly.

6.2.1. MODBUS CONNECTION

The Modbus interfaces of the controller and the operating panel are

connected as shown in the wiring diagram Figure 2.

6.2.2. BUS TERMINATION

A Modbus connection must be terminated at both ends with a

terminating resistor (see wiring diagram Figure 2). On the controller

side, a 120 Ohm (1/4 Watt) must be applied in parallel to the Modbus

terminals (X4.7, X4.8). The control panel itself has a switchable

terminating resistor. Please check that the switch on the control panel

(see Figure 1, P. 5) for the terminating resistor is set to ”ON”.

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ISYteq Touch 2.1 – Installation and maintenance manual

6.2.3. BIAS (PULL-UP AND PULL-DOWN RESISTORS)

Both the controller and the control panel have integrated BIAS

resistors. There is therefore no need to switch on BIAS (pull-up and

pull-down resistors).

6.2.4. CABLE LENGTH AND TYPE

The maximum cable length between the controller and the control

panel is 100 m. The following cable types are recommended:

• Nomak 2x2x0.5

• KLMA 4x0.8

• or equivalent cable types.

Note: This cable is also suitable for the power supply of the control

panel by the controller.

7. BUILT-IN ROOM-TEMPERATURE SENSOR

The control panel has a built-in temperature sensor. The temperature

range of this sensor is 0°C to 40°C. The measuring accuracy for

the speciﬁed range is given in Table 1. The installation location of

the control panel is also the measurement location of the room

temperature; therefore, it should be free of drafts and at the same time

a suitable measuring point for the room temperature. When using the

internal room temperature sensor, it is recommended to install the

control panel on the wall using a surface-mounted box. This will result

in faster temperature measurement.

If the installation location of the control panel is not suitable as

a measuring point for the room temperature, an external room

temperature sensor can be connected to the controller and placed in a

better location in the room.

Temperature range Accuracy °K

0.0–9.9°C ±3.0°K

10.0–19.9°C ±1.5°K

20.0–29.9°C ±1.0°K

30.0–40.0°C ±3.0°K

Table 1: Accuracy of the internal temperature sensor

8. MAIN MENU

8.1. MAIN SCREEN LAYOUT

The main screen is divided into the following areas:

Figure 3: Main screen layout

1. Button for the system menu

2. Button for the operating mode (proﬁles)

3. Indicator and button to acknowledge alarms

4. Button for the operating mode of the controller

5. Display range for the different setpoints

6. Button for scrolling up and down the different setpoints

8.2. SPLASH SCREEN

After connecting the power supply, the control panel starts with the

splash screen (Figure 4). This splash screen shows the ﬁrmware

version of the control panel and the company logo with a progress bar.

If an access lock for the operating panel is conﬁgured on the controller,

an input menu for a 3-digit pin is displayed after exiting the splash

screen (see chapter 8.3). If no access protection is conﬁgured, the

main menu (Figure 7) is shown after the start-up process.

Figure 4: Splash screen

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ISYteq Touch 2.1 – Installation and maintenance manual

8.3. ACCESS PROTECTION

The control panel can be protected against unauthorized access by

a 3-digit pin code. This access protection must be activated on the

controller and the desired pin code must be stored there. In the factory

default setting, the access protection is not activated, and the pin code

is preset to 999.

Note: If the pin was forgotten, it can only be changed or read from the

controller’s web page with the appropriate authorization.

The screen for entering the pins (see Figure 5) appears when the

access protection is activated, either directly after the splash screen or

when coming from the standby screen (chapter 8.5.2.3). Without any

operating action, the operating panel will be locked after 60 seconds

and the standby display will appear. Touching the standby screen will

not change directly to the setpoint menu, but to the pin entry screen.

Each of the displayed pins can be changed to the desired pin in

independent order using the arrow keys. Tap on the padlock symbol

in the lower right corner to conﬁrm your entry. If the pin is correct,

the system switches to the last selected setpoint menu (see chapter

8.9). If the pin is wrong, the padlock symbol is displayed in red for a

moment.

Figure 5: Entry pin screen

8.4. STANDBY SCREEN

The control panel switches from the main screen to the standby

display after 60 seconds without any operation. In standby mode,

the brightness of the screen is dimmed, but the actual values of the

control can still be read. The symbols for the actual values (see Figure

6) on the left side of the display are the same symbols as the symbols

for the corresponding setpoints (see also chapter 9).

Which actual value should be displayed can be conﬁgured in the

system menu (see chapter 8.5.2.3). Touching the standby display will

either display the last selected setpoint menu or if the access lock is

activated, the input dialogue for the pin (see chapter 8.3).

Figure 6: Standby screen

8.5. SYSTEM MENU

The system menu (Figure 8) contains submenus for settings that affect

the control panel itself. This includes the conﬁguration of the menu

language, the backlight, the bypass setting, as well as contact and

version information.

With the button in the upper left corner (see Figure 7), the system

menu is called up. In the system menu, select the desired menu from

the list with the and buttons, which will then be marked

yellow. By tapping on the marked menu, it will be called up. Use the

button (top left) to return to the main menu.

Figure 7: Main screen

Figure 8: System menu

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ISYteq Touch 2.1 – Installation and maintenance manual

8.5.1. INFORMATION MENU (ABOUT US)

The ”Information” menu can be accessed via the system menu. On

the ﬁrst page of the ”About Us” menu, you can display the contact

information of the manufacturer and the company product version

number of the connected controller. On the second page, which can be

reached by clicking the button , the URL of the company web page

is displayed as QR code, the ﬁrmware version number of the control

panel and the controller. The button can be used to switch pages

and the button returns (see Figure 9 & Figure 10) to the system

menu.

Figure 9: Contact info as text

Figure 10: URL of the company website as QR code

8.5.2. MENU DISPLAY SETTINGS

In this menu, all settings can be made which affect the display itself.

Use the two buttons and to select the desired menu. By

touching the selected menu, you can access the settings menu. Button

takes you back to the ‚System menu‘.

Note: If the Modbus connection is interrupted, the ﬁrmware version

number of the controller is displayed as v0.00.00.00.

8.5.2.1. Backlight

In this menu, you can adjust the brightness of the backlight in percent

up to the maximum brightness. The buttons and are used

to increase or decrease the brightness in one percent steps. With

button , you can leave this menu without accepting the changed

brightness and with button you accept the brightness value and

leave the menu.

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ISYteq Touch 2.1 – Installation and maintenance manual

8.5.2.2. Language

In this menu, the menu language can be changed. The following

languages are available in the selection list:

• English

• Swedish

• Finnish

• German

• French

Note: The languages displayed in the list are always in the respective

national language.

Use button and to select the language in the selection list.

With button , you can leave this menu without accepting the

changed language and with button you accept the selected

language and leave the menu.

8.5.2.3. Standby screen

In this system menu, you can deﬁne which actual value of the

control should be displayed on the standby display. The selection list

contains only process value entries which have been conﬁgured in the

controller.

List of all possible actual values:

• None (black screen)

• Temperature

• Supply air volume ﬂow

• Exhaust air volume ﬂow

• Duct pressure supply air

• Duct pressure exhaust air

• Air Quality

• Supply air fan speed

• Exhaust air fan speed

• Humidity

Example:

If only one supply air volume ﬂow control is conﬁgured on the

controller, only the supply air volume ﬂow is displayed as the actual

value in the selection.

With the buttons and the actual value is selected in the

selection list. With button you can leave this menu without

accepting the changed standby screen and with button the

selected actual value type is accepted, and the menu returns to the

system settings menu.

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ISYteq Touch 2.1 – Installation and maintenance manual

8.5.3. BYPASS SETTINGS MENU

In this menu, the operating mode and the duration of the bypass

function can be changed.

Once the desired bypass parameter has been selected and tapped

with the arrow keys, use buttons and to select the operating

mode or to change the duration.

Use the button to leave this menu without accepting the changed

bypass parameters. Use the button to accept the selected bypass

parameter and return to the system menu.

The following operating modes can be selected in bypass mode:

OFF Device is switched off (frost protection mode)

P1 Profile 1

P2 Profile 2

P3 Profile 3

P4 Profile 4

P5 Profile 5

How the bypass is activated and which function it fulﬁlls is described

in chapter 8.7.1.

8.6. MODBUS PARAMETER SETTING MENU

The operating unit communicates with the controller via an RS485

Modbus RTU protocol. How to connect the operating panel to a

controller is described in section 2.2.1. The following Modbus settings

apply as factory settings of the controller and the operating panel:

Controller Modbus address (slave): 1

Baud rate 19200

Number of data bits 8

Number of stop bits 2

Parity None

Note: If the control panel is correctly connected to the controller and

with the factory default settings, the Modbus connection between

controller and control panel should work immediately, no further

settings are required.

The menu for setting the Modbus parameters is hidden, among other

things to prevent accidental changes to the Modbus parameters. To

access the menu for Modbus settings, the QR code in the menu ”About

us” (chapter 8.5.1) must be touched 5 times within 2 seconds.

In this menu, all Modbus settings can then be made. Use the two

buttons and to select the desired Modbus parameter. By

touching the selected menu, the settings menu of the selected

parameter is opened. With the button you can return to the ”About

us” menu.

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ISYteq Touch 2.1 – Installation and maintenance manual

8.6.1. MODBUS PARAMETERS

The Modbus parameters are correctly set at the factory. As there are

no other Modbus participants on the bus, there is no reason to change

the parameters. The pre-set Modbus parameters ensure that the

system can be operated immediately if the connection between the

controller and the operating panel is correct.

If it is necessary to change the Modbus parameters, the following

section will explain the baud rate as an example. All other parameter

menus follow this principle.

In this menu, the desired baud rate can be selected. Use buttons

and to select the desired baud rate from the list.

With button you can leave this menu without accepting the baud

rate and with button you accept the selected baud rate and leave

the menu.

Note: Please make sure that when changing the Modbus parameters,

the equivalent parameters are set on the controller unit.

8.7. OPERATING MODES (PROFILES)

With the button in the upper right corner (see Figure 11) the operating

modes of the controller can be changed. Tap this button to scroll

through the operating modes one by one, as shown in Figure 11. The

selected operating mode will only be accepted and activated after 3

seconds.

Most of the operating modes have changeable proﬁles (proﬁle 1- 5),

which determine which operating modes and which setpoints are valid

for the controller. The operating modes , scheduler and bypass

have no proﬁles and therefore are exceptions. The operating mode

switches off the system (frost protection mode), the scheduler

activates the proﬁles according to a previously deﬁned timer program.

The bypass function (see chapter 8.7.1) can be activated for a

previously deﬁned period.

Figure 11: Changing operation modes

Note: After switching a proﬁle, the setpoints are taken over from the

new proﬁle, so that the displayed setpoint may change in the setpoint

range of the display. Any changes made by a user are temporarily

retained until another proﬁle is switched over.

Note: The timer program can only be viewed and changed via the

controller’s web interface.

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ISYteq Touch 2.1 – Installation and maintenance manual

8.7.1. BYPASS FUNCTION

A bypass function is suitable for activating a desired operating mode

(proﬁle) once for a deﬁned period. The set operating mode is bypassed

for a period. After the period has expired, the system switches back to

the previous operating mode.

The difference between an automatic timer and the bypass function is

explained in the following example.

Example:

Two proﬁles have been deﬁned for an ofﬁce room, one when the ofﬁce

is occupied by employees (Ofﬁce Time proﬁle) and one when there

are no people in the ofﬁce (Free Time proﬁle). The automatic timer is

activated and switches the Ofﬁce Time proﬁle from 8:00 to 17:00 to

active and from 17:00 the system is switched from the automatic timer

to the Free Time proﬁle since there are usually no more employees

in the ofﬁce. If employees want to stay in this ofﬁce longer than 5:00

p.m., they could activate the desired operating mode (proﬁle) manually,

with the disadvantage that when leaving the ofﬁce, the proﬁle that was

active before should be set. An easier solution in this case would be

to activate the desired operating mode for a certain period. After this

period has elapsed, the system automatically switches back to the

previous operating mode.

Changes of the bypass operating mode or proﬁle and the duration for

the bypass are described in chapter 8.5.3.

Note: The bypass function can also be started from the controller web

page. In this case, the bypass operation is displayed on the control

panel. The bypass function can be canceled at any time from the

control panel.

8.8. OPERATION TYPES OF THE CONTROLLER

The operation types of the controller can be switched cyclically with

each tap on the button 4 (see Figure 3). The following operation types

are available:

‘Automatic’ means that the controller decides

independently, depending on the current temperature,

whether heating or cooling is required.

‘Heating only’ means that if the current temperature

falls below the setpoint, heating is active. Otherwise, the

system remains neutral (no active heating or cooling).

‘Cooling only’ means that if the current temperature

rises above the setpoint, cooling is active. Otherwise the

system remains neutral (no active heating or cooling).

’Night purge’ means that before active heating or cooling

sequences are started, under certain outdoor and

indoor air conditions, the ERS (if present) or the outdoor

air (passive) is used for cooling and in rare cases for

heating.

8.9. SETPOINT MENUS

The different setpoint menus can be selected by the two buttons

or (area 6 in Figure 3). The list of target values is

cyclic (see Figure 12), i.e. it starts again from the beginning at the end

of the list. Only those setpoints are displayed that correspond to the

equipment or conﬁguration of the installation/controller. If the desired

setpoint is selected via buttons and , tapping the

setpoint (area 5 in Figure 3) will bring up a menu where the setpoint

can be changed.

With the buttons , the setpoint can be increased or

decreased. If the button is held down for more than 2 seconds, a

repeat function is activated. The longer the button is pressed, the

faster the value is changed. Button accepts the target value and

button allows to leave the target value menu without accepting the

changed value.

All setpoint menus are described in the following chapters.

Figure 12: Example of a cyclic setpoint list

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ISYteq Touch 2.1 – Installation and maintenance manual

8.9.1. CHANGING THE ROOM TEMPERATURE SETPOINT

Five different types of temperature setpoints can be conﬁgured on

the controller. The room temperature setpoint menu is only displayed

in the list if a room temperature control has been activated on the

controller. The setpoint types are described in the following chapters.

Temperatures are displayed in the unit conﬁgured in the controller. The

limit values for the room temperature come from the controller and are

set at 5 to 45°C at the factory.

8.9.1.1. Single temperature setpoint (heating & cooling)

A single temperature setpoint means that it is intended for both the

heating and the cooling circuit.

8.9.1.2. Temperature setpoint heating with offset cooling

In the following diagram, you can see the principle of a temperature

setpoint for the heating circuit with an offset for the cooling circuit. In

the neutral zone, the controller remains passive. If the temperature

setpoint for the heating circuit is changed, the setpoint for the cooling

circuit is shifted by the value of the offset. The size of the neutral zone

therefore remains the same.

Heating neutral Cooling

8.9.1.3. Temperature setpoint cooling with offset heating

In the following diagram, you can see the principle of a temperature

setpoint for the cooling circuit with an offset for the heating circuit. In

the neutral zone, the controller remains passive. If the temperature

setpoint for the cooling circuit is changed, the setpoint for the heating

circuit is shifted by the value of the offset. The size of the neutral zone

therefore remains the same.

8.9.1.4. Separate Temperature setpoint for heating & cooling

In the following diagram, you can see the principle if separate

temperature setpoints exist for the heating and the cooling circuit. In

the neutral zone, the controller remains passive. If you change the

setpoint for the heating or cooling circuit, the size of the neutral zone,

changes as well.

Heating neutral Cooling

Figure 13: Single temperature setpoint

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ISYteq Touch 2.1 – Installation and maintenance manual

8.9.1.5. Relative temperature setpoint

In the case of a relative setpoint, on a base temperature setpoint (

labeled as B in Figure 14), if the temperature value is positive, the value

is added to the base setpoint and if it is negative, it is subtracted from

the base setpoint. The base setpoint comes from the controller and

can only be changed there. The limit values for the relative temperature

setpoint are speciﬁed by the controller and are set at the factory to

-5.0 to +5.0 K.

Example 1:

Basic setpoint: 21.0°C

Relative setpoint: +1.5 ∆K

Resulting setpoint: 22.5°C

Example 2:

Basic setpoint: 21.0°C

Relative setpoint: -1.5 ∆K

Resulting setpoint: 19.5°C

Figure 14: Relative temperature setpoint

8.9.2. CHANGING THE AIR VOLUME FLOW RATE

The setpoint menus for the air volume ﬂow rates are only displayed

in the list if either a supply air and/or an exhaust air volume ﬂow

rate control has been activated on the controller. Air volume ﬂows are

displayed in the unit conﬁgured on the controller (m

/h, m

/s, l/s).

The limit values for the air volume ﬂows come from the controller and

are already set to the corresponding unit sizes at the factory.

8.9.2.1. Supply air volume ﬂow

Figure 15: Setpoint menu supply air volume ﬂow

Figure 16: Setpoint menu extract air volume ﬂow

8.9.2.2. Extract air volume ﬂow

Heating Cooling

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Figure 18: Setpoint menu extract air duct pressure

Figure 20: Setpoint menu extract air fan speed

Figure 21: Setpoint menu for air quality

Figure 17: Setpoint menu supply duct pressure

Figure 19: Setpoint menu supply air fan speed

8.9.3.2. Extract air duct pressure

8.9.4.2. Extract air fan speed

8.9.3. CHANGING THE DUCT PRESSURE

The setpoint menus for the duct pressures are only displayed in the

list if either a supply air and/or an exhaust air duct control has been

activated on the controller.

The limit values for the duct pressure come from the controller and are

already set to the corresponding unit size in the factory.

8.9.3.1. Supply air duct pressure

8.9.4. CHANGING THE FAN SPEED

The setpoint menus for the fan speeds, adjustable as a percentage of

the maximum speed, are only displayed in the list if a manual setting

of the supply air and/or exhaust air fan speed has been activated on

the controller.

The limit values for the fan speed come from the controller and are

factory pre-set.

8.9.4.1. Supply air fan speed

8.9.5. CHANGING THE AIR QUALITY TARGET VALUE

The setpoint menu is only displayed if a underlying air quality control

has been conﬁgured on the controller. The limit values for the air

quality setpoint come from the controller and are factory set to 0 -

3000 ppm. If CO2 sensors are conﬁgured on the controller, the values

are displayed in ppm (part per million). For all other types of air quality

(VOC) sensors, the values are displayed in percent (%).

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ISYteq Touch 2.1 – Installation and maintenance manual

Figure 22: Single setpoint for humidifying & dehumidifying (automatic mode)

Figure 23: Single setpoint for humidifying

Figure 24: Single setpoint for dehumidifying

Figure 25: Single setpoint menu relative humidity

Figure 26: Setpoint for humidifying

Figure 27: Offset for dehumidifying

8.9.6. CHANGING THE HUMIDITY SETPOINT

The setpoint menu for the humidity (humidiﬁcation and

dehumidiﬁcation) is only displayed in the list if one of the humidity

controls is activated on the controller. On the controller, the

humidity control can be conﬁgured for either humidiﬁcation and/

or dehumidiﬁcation. In addition, the humidity can be displayed as

absolute (g/kg) or relative (%) value.

The limit values of the humidity setpoint come from the controller and

are factory defaults.

8.9.6.1. Single setpoint for humidifying & dehumidifying

A single humidity setpoint can be a setpoint for humidiﬁcation and

dehumidiﬁcation (automatic) or just for humidiﬁcation or just for

dehumidiﬁcation, depending on what has been set in the proﬁle on the

controller (see ﬁgures below). If the setpoint is only for humidiﬁcation

or dehumidiﬁcation, the other part becomes the neutral zone (see

Figure 23 and Figure 24).

8.9.6.2. Setpoint for humidifying with offset for dehumidifying

If the controller is conﬁgured for a setpoint for humidiﬁcation and an

offset for dehumidiﬁcation, the humidity control behaves as shown

in the ﬁgure below If the humidiﬁcation setpoint is changed, the

dehumidiﬁcation setpoint is simultaneously changed by the set offset.

Example:

Dehumidiﬁcation setpoint is changed from 50 to 55%, with a set offset

of 5%, the dehumidiﬁcation setpoint changes from 55 to 60% at the

same time.

Humidifying Dehumidifying

Humidifying neutral

neutral Dehumidifying

neutral DehumidifyingHumidifying

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8.9.6.3. Setpoint for dehumidifying with offset for humidifying

If the controller is conﬁgured for a setpoint value for dehumidiﬁcation

and an offset for humidiﬁcation, the humidity control behaves as

shown in the ﬁgure below If the setpoint for dehumidiﬁcation is

changed, the humidiﬁcation setpoint changes by the set offset at the

same time.

Example:

Dehumidiﬁcation setpoint is changed from 21 to 26%. If the set offset

is 5%, the humidiﬁcation setpoint changes from 23 to 28% at the same

time.

neutral DehumidifyingHumidifying neutral DehumidifyingHumidifying

Figure 28: Offset of the humidifying Figure 30: Separate setpoint for humidifying

Figure 29: Setpoint for the dehumidifying Figure 31: Separate setpoint for dehumidifying

8.9.6.4. Separate setpoint for humidifying & dehumidifying

If the controller is conﬁgured for two separate setpoints, one for

humidiﬁcation and one for dehumidiﬁcation, then the humidity

control behaves as shown in the ﬁgure below If the setpoint for

dehumidiﬁcation is changed, the value of the humidiﬁcation setpoint

remains unchanged. Only the size of the neutral zone changes.

Example:

Humidiﬁcation setpoint is changed from 45 to 47%, then the set

dehumidiﬁcation setpoint remains unchanged at 50%.

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ISYteq Touch 2.1 – Installation and maintenance manual

Figure 32: Setpoint menu for the minimum amount of outdoor air

8.9.7. CHANGING THE MINIMUM AMOUNT OF OUTDOOR AIR

The setpoint menu for the minimum outdoor air rate is only displayed

in the list if a damper control is activated which either expects the

minimum damper position in percent or calculates the damper position

depending on the speciﬁed outdoor air rate in percent and the current

fan speed. Depending on the conﬁguration of the controller, the damper

position can be entered as a percentage and the controller tries to

hold the minimum outdoor air rate with fan speed, or the outdoor air

rate is entered either in m

/h, m

/s or l/s and the damper position is

controlled accordingly.

The limit values for the minimum percentage of outdoor air come from

the controller and are pre-set at the factory.

8.10. ALARMS

Alarms or fault situations of the connected controller are indicated as

collective alarms by an alarm symbol (bell) in the lower-left corner

of the display (see also Figure 3, section 3). If an alarm symbol is

displayed, the responsible service department should be notiﬁed

immediately to avoid consequential damage to the unit.

There are two types of alarms, a tripping and non-tripping collective

alarm. Tripping alarms cause either a shutdown or partial shutdown

of the unit. Further information on the cause of the fault can only be

obtained via the controller’s web interface.

8.10.1. ACKNOWLEDGING ALARMS

The alarm icon is also the button for acknowledging the tripping

alarms on the controller. After the button is pressed, the alarm symbol

turns white for a short moment as a conﬁrmation of acknowledgement.

An acknowledgement of the alarm is only successful if the cause(s)

of the error(s) that led to the alarm on the controller is eliminated. If

an alarm is still pending, the alarm symbol is displayed. In the case of

non-tripping alarms whose cause(s) has (have) been eliminated on the

controller, the alarm symbol on the display disappears automatically.

Note: For tripping alarms whose cause has already been eliminated on

the controller unit, the alarm symbol is displayed until the alarm has

been acknowledged by the user.

8.10.2. ALARM SYMBOLS

The different colours of the alarm icon (bell) represent the following

alarm categories:

An error situation has occurred on the controller. The controller

reports an non-tripping alarm. This alarm does not require an

acknowledgement with the alarm button. This alarm will no longer be

displayed once the problem has been solved on the controller side.

A serious error situation has occurred at the controller unit, the

controller unit reports a tripping alarm. After this serious error has

been resolved and the red alarm symbol is still visible on the display,

an acknowledgement must be made by the user (see chapter 8.10.1)

so that the system can return to normal operation.

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ISYteq Touch 2.1 – Installation and maintenance manual

8.10.3. MODBUS COMMUNICATION ERROR

When a Modbus communication error occurs, the following error

screens appear.

8.10.3.1. No connection

A connection error can have the following causes.

• Different or wrong Modbus conﬁguration. The controller and the

operating unit have different Modbus communication parameters

such as baud rate, number of data bytes, parity or number of stop

bits. The Modbus station address of the controller may also be

conﬁgured incorrectly. The factory default settings of the controller

and the operating unit are listed in chapter 8.6 and normally do not

require any changes for Modbus communication.

• The cable between the controller and the operating panel was not

connected correctly.

• The bus termination on the operator panel is not activated or

additional termination resistor on the controller side has not been

attached to the terminal.

8.10.3.2. Modbus register not readable

If this error screen appears, the ﬁrmware of the control panel is not

compatible with the controller unit. Modbus registers are accessed

that are not present on the controller unit. This usually means that

the control panel has a newer software version than the controller.

The system will therefore only function to a limited extent or not at all.

Please inform the service staff immediately.

8.10.4. ERROR DURING PARAMETER INITIALIZATION

This error screen should not appear during operation. If it does, it

indicates that a micro SD card was detected during the start-up

process of the control panel and that the parameters or data loaded

from this card may have one of the following error causes:

• CRC Error when reading data from the micro SD card

• General read errors of the micro SD card

• The version of the parameter ﬁle does not match the one on the

micro SD card.

Note: If the micro SD card has been removed from the control panel,

this error should no longer occur. If this or any other error occurs,

please inform the service staff immediately.

8.10.5. THE CONTROLLER UNIT WAS SWITCHED OFF EXTERNALLY

The controller unit was switched off either via the controller’s web

page or via a special input on the controller. If the following screen is

displayed, the controller unit can no longer be controlled via the control

panel. This is not an error situation! If the system has been switched

on again in this way, the main menu is visible, and the system can be

controlled via the control panel again.

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ISYteq Touch 2.1 – Installation and maintenance manual

9. LIST OF ALL USED SYMBOLS

The following table lists all the symbols used on the control panel with

their meaning.

Symbol Meaning

Supply air volume flow setpoint and the actual value (see

chapter 8.9.2.1)

Exhaust air volume flow setpoint and the actual value (see

chapter 8.9.2.2)

Supply duct pressure setpoint and the actual value (see

chapter 8.9.3.1)

Exhaust duct pressure setpoint and the actual value (see

chapter 8.9.3.2)

Supply air fan speed setpoint and the actual value (see

chapter 8.9.4.1)

Exhaust air fan speed setpoint and the actual value (see

chapter 8.9.4.2)

Air quality target and the actual value (see chapter 8.9.5)

Operating mode: Automatic timer (see chapter 8.7)

Operating mode: Unit in frost protection mode (off) (see chapter

8.7)

Operating mode: Profile 1 (see chapter 8.7)

Operating mode: Profile 2 (see chapter 8.7)

Operating mode: Profile 3 (see chapter 8.7)

Operating mode: Profile 4 (see chapter 8.7)

Operating mode: Profile 5 (see chapter 8.7)

Operating mode: Bypass (see chapter 8.7)

Dehumidification setpoint (see chapter 8.9.6.3)

Dehumidification offset (see chapter 8.9.6.2)

Humidification setpoint (see chapter 8.9.6.2)

Humidification offset (see chapter 8.9.6.3)

Humidity setpoint (see chapter 8.9.6.1)

Setpoint for outdoor air amount (see chapter 8.9.7)

Symbol Meaning

Single temperature setpoint or actual value (see chapter

8.9.1.1)

Temperature setpoint cooling circuit (see chapter 8.9.1.3)

Temperature offset cooling circuit (see chapter 8.9.1.2)

Temperature setpoint heating circuit (see chapter 8.9.1.2)

Temperature offset heating circuit (see chapter 8.9.1.3)

Relative temperature setpoint (see chapter 8.9.1.5)

Controller mode: Automatic (see chapter 8.8)

Controller mode: Heating only (see chapter 8.8)

Controller mode: Cooling only (see chapter 8.8)

Controller mode: Night Purge (see chapter 8.8)

Tripping collective alarm (see chapter 8.10.2)

Non-tripping collective alarm (see chapter 8.10.2)

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ISYteq TOUCH 2.1

FläktGroup ISYteq Touch 2.1 room controller Installation guide

FläktGroup ISYteq Touch 2.1 room controller Installation guide

FläktGroup ISYteq Touch 2.1 room controller Installation guide

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