Danfoss Icon2 wireless With Infrared Sensor User Guide

Danfoss Icon2 wireless With Infrared Sensor

Product Information

Specifications

• Product Name: Danfoss Icon2TM
• Category: Zone controls for hydronic floor heating
• Website: icon.danfoss.com

Product Usage Instructions

Thermal Actuators

For new installations or replacing an existing installation, follow the instructions provided in the manual.

Wireless Connectivity

To utilize wireless connectivity, refer to the manual for instructions on optional smartphone control and extending the wireless range.

Rapid Commissioning

For rapid commissioning, follow the guidelines provided in the manual.

Danfoss Icon2TM Room Thermostat Installer Settings Menu

Access the installer menu as explained in the manual. Understand the dual mode feature for optimal usage.

Troubleshooting

If you encounter any issues, refer to the troubleshooting section in the manual for assistance.

Applications

• Application 00: Floor heating system
• Application 01: 2-pipe heating system with fixed supply temperature control
• Application 02: 2-pipe heating system with demand-controlled supply temperature
• Application 03: 2-pipe heating/cooling system, changeover to cooling based on supply temperature
• Application 04: 2-pipe heating/cooling system, changeover to cooling based on heat pump/external potential-free NO contact
• Application 05: 2-pipe heating/cooling system with (hybrid) heat pump, changeover to cooling based on reference thermostat

Frequently Asked Questions

• Q: How do I troubleshoot connectivity issues?
  • A: Refer to the troubleshooting section in the manual for guidance on resolving connectivity problems.
• Q: Can I control the system remotely?
  • A: Yes, you can use optional smartphone control as detailed in the manual to operate the system remotely.
• Q: What is dual mode in the installer settings menu?
  • A: Dual mode allows for specific customization of settings for different scenarios. Refer to the manual for more information on how to utilize this feature.

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Service Manual Danfoss Icon2TM
Zone controls for hydronic floor heating
icon.danfoss.com

AB432956914381en-010101

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Service Manual Danfoss Icon2TM

Select your Icon2TM solution

Connect up to four Master Controllers wirelessly

Description: Part number: Specifications:

Icon2TM Master Controller 088U2110 Number of actuator outputs for floor heating groups: Actuator supply voltage for floor heating groups: Suitable for floor cooling: Water temperature control: Smartphone control by end user: Connection to thermostats:

15 channels 230V thermal actuators (convertible to 24V control) Yes, advanced applications for 2, 3 and 4-pipe systems Yes, depending on selected application Yes, with addition of optional AllyTM Gateway Both wired and wireless; wireless communication included as standard

Wireless thermostats

2-wire 24V thermostats

Description: Icon2TM standard thermostat
Part number: 088U2121

Description: Icon2TM thermostat with infrared floor sensor
Part number: 088U2122

Description: Icon2TM thermostat No settings or display
Part number: 088U2120

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Description: Icon2TM surface-mounted thermostat
Part number: 088U2128

Description: Icon2TM flush-mounted thermostat
Part number: 088U2125

Description: Optional floor sensor
Part number: 088U1110
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Service Manual Danfoss Icon2TM
Thermal actuators
New installation
The Icon2TM Master Controller actuator outputs use 230V

Description: TWA-A 230V NC thermal actuator with connection for Danfoss valves/floor heating manifolds
Part number: 088H3112

Description: TWA-K 230V NC thermal actuator with M30 connection for valves and floor heating manifolds with M30
Part number: 088H3142

Replacing an existing installation
Do you need to replace existing controls that already use 24V actuators for each floor heating group? This optional converter transformer allows you to convert the 230V actuator outputs on the Icon2TM Master Controller to 24V outputs.
Description: Converter Transformer 230V 24V Insert into Icon2TM Master Controller
Part number: 088U2140

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Wireless connectivity

Optional smartphone control

If the Icon2TM Master Controller is wirelessly connected to the AllyTM Gateway, the system can be controlled from inside or outside the home using an App.

Description: Danfoss AllyTM Zigbee Gateway
Part number: 014G2400

Grid power supply using supplied USB cable and adapter

Fixed internet router connection using supplied RJ45 cable

Extending the wireless range

A wireless signal gets weaker as it travels. Metal surfaces and metal in constructions in particular can block the signal. The Danfoss Icon2TM Zigbee repeater can help you improve your thermostats’ connection. If the Icon2TM Master Controller is installed in an enclosure, you can add an external antenna.

Description: Danfoss Icon2TM Zigbee Repeater

Description: Danfoss Icon2TM External Antenna

Part number: 088U1131

Part number: 088U2141

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Service Manual Danfoss Icon2TM
Rapid commissioning
Step 1: Always be sure to connect actuators, thermostats and any accessories first
Inputs and outputs on the connected devices will instantly be detected when you insert the plug into an electrical outlet. Never connect devices with the plug already in an outlet.

230V thermal actuators for floor heating. One actuator max. per output.

2-wire 24V thermostats. You can connect several thermostats to one bus
24V actuator and sensor for application with specific water temperature control

Remove the red tabs from the actuators

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Step 2: Download the Icon2TM commissioning App and turn on Bluetooth on your smartphone
To set up the Icon2TM Master Controller, you will need to use the App on your smartphone or tablet. It will connect to the Icon2TM Master Controller using Bluetooth.
· Install the App on your smartphone or tablet.
· Make sure Bluetooth is turned on on your smartphone or tablet.
· Give the Danfoss App permission to access Bluetooth.

Optional: Linking of thermostats to actuator outputs using pushbuttons on Master Controller

1
3 sec.

· Press > until the LED starts flashing green. Every actuator output connected to an actuator will light up.

2
Repeat steps 2 and 3 for each thermostat
3

· Use > to select the actuator output you want to pair with the thermostat and confirm with OK. The LED for the selected output will light up dimly.
Repeat for each actuator output you want to pair with the thermostat.
· Once you have selected all the actuator outputs, activate the thermostat by pressing its display screen. When the checkmark lights up, this means the thermostat is now linked to the selected actuator outputs.

Once each actuator output has been assigned to a thermostat, you will exit installer mode automatically

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Service Manual Danfoss Icon2TM

Re-pairing or replacing a device

When to reset a thermostat
You may reset a thermostat if you want to remove it from the system.
This can be the case because: – The actuator outputs were paired incorrectly OR – The entire system requires resetting

1. Activate the thermostat by pressing on the screen.

2. Use both thumbs to press the temperature adjustment

arrow keys

until

appears, as shown

in the adjacent image.

3. Press the ‘ checkmark next to

‘.

The thermostat has now been removed from the system.

When to reset the Master Controller
Reset the Master Controller to return to the factory settings. This will cause all data to be deleted. Do this if you want to recommission the installation.
If you reset the Master Controller, you will also need to reset all linked thermostats and any App or Zigbee modules. This is necessary to be able to pair these devices again.
Hold down > ‘ and then press the OK ‘ button until both LEDs start flashing blue, then release the
buttons immediately.

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What to do if the thermostat cannot be reset
If a wireless thermostat was reset without the regulator being plugged into an outlet or in case of a faulty thermostat, you can use the Icon2TM App to clear the actuator outputs. Procedure Once you are within Bluetooth range of the regulator, start up the Icon2TM App. Choose: 1. Connect to existing system.’ 2. Once a connection has been made, selectRoom Overview.’ 3. Select one of the thermal
actuators that require clearing. 4. Press the three dots at the top right
on the thermostat. 5. Now select `Remove thermostat’.
You can now reassign the actuator outputs.
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Service Manual Danfoss Icon2TM

Danfoss Icon2TM Room Thermostat installer settings menu

Open the installer menu
Activate the thermostat. Press and hold to open the basic menu (ME. 1 to 3). Then press and hold again to access the installer menu ME. 4 to 7.
Use or to change menus and to confirm. Press to go back one step in the menu.
The ME.4 and ME.5 menu settings will only be available if the thermostat has a floor sensor. Menu settings ME.6 and ME.7 will only be available if a cooling application was selected.
ME. 1 : Set limits for room temperature setpoint adjustments
ME. 2 : Information/version number used to identify the product
ME. 3 : Perform a link test to test the connection with the Master Controller. Test results are 0­100%, with 80% or higher indicating a strong connection.
ME. 4 : Floor sensor mode: CO = Comfort mode. Uses both air and floor sensors. FL = floor sensor mode. Desired floor temperature set by end user. DU = dual mode. Thermostat controls one radiator and one or more floor heating circuit(s). Floor heating circuits maintain a comfortable set floor temperature and radiator is used for peak loads.
ME. 5 : Minimum and maximum floor temperatures for use with CO and DU modes.
ME. 6 : Reference room. Set to ON to use this room’s thermostat as the reference for the changeover between cooling and heating modes.
ME. 7 : Cooling ON/OFF. This setting is used to disable cooling, for example in a bathroom.

Explanation of dual mode
In rooms with a combination of floor heating and convectors, one thermostat can be used to control both individually.
For this to be possible, the wireless or wired thermostat must have a floor sensor. On the Master Controller, the actuator outputs for the floor heating must be configured to SLOW and those for the convectors to FAST. Then the system will maintain a comfortable, consistent floor temperature and activate the convector actuator outputs if the desired room temperature isn’t being achieved.

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Service Manual Danfoss Icon2TM
Troubleshooting
Lost connection to AllyTM Gateway Lost connection to Icon2TM Thermostat Faulty actuator or loose wire Faulty actuator or loose wire Look up error message in Icon2TM App Need more help? Download the App
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Notes
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Service Manual Danfoss Icon2TM
Application 00
Floor heating system
Application description This basic Icon2TM application controls thermal actuators by group based on heating demand for the linked room thermostats. The pump and heat demand signal will activate whenever there is a heating demand for at least one circuit. Both the pump (PWR1) and the heat demand signal (RELAY) are set to have a switch-on delay of 3 minutes by default. In PWM+ mode, the Danfoss Icon2TM makes use of automatic balancing. During periods with a greater need for heat, this decreases the time spent `on’ for shorter pipes in small rooms and prioritizes longer pipes in large rooms within the system. The process is automatic and continuous. It ensures more efficient energy consumption and greater comfort.

Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow PWR1 switch-on delay of 3 minutes RELAY switch-on delay of 3 minutes IN2 input for changeover to cooling If you enable IN2, the system will function according to Application 04

Factory setting

Off

On

Required accessories

1 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

2 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

3 Dew point sensor CF-DS

088U0251

4 External NO contact for changeover to cooling mode

External

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Service Manual Danfoss Icon2TM
3 1

1

M

M

M

M

2

1 1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
2 Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  3 Dew Point Sensor CF-DS
  4 External switch for manual changeover between heating and cooling

Mains Power

AB432956914381en-010101

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

NO COM
N C GND
V+

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

AAppp201
Dew Point Sensor
4
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Service Manual Danfoss Icon2TM
Application 01
2-pipe heating system with fixed supply temperature control
Application description Floor heating system with electronically controlled supply temperature. The supply temperature is set to a fixed value. The system uses a PT1000 sensor to detect and control the supply temperature. This sensor also ensures that the maximum allowable supply temperature is not exceeded. The pump and heat demand signal will activate whenever there is a heating demand for at least one circuit. Both the pump (PWR1) and the heat demand signal (RELAY) are set to have a switch-on delay of 3 minutes by default. In PWM+ mode, the Danfoss Icon2TM makes use of automatic balancing. During periods with a greater need for heat, this decreases the time spent `on’ for shorter pipes in small rooms and prioritizes longer pipes in large rooms within the system. The process is automatic and continuous. It ensures more efficient energy consumption and greater comfort.
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Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow PWR1 switch-on delay of 3 minutes RELAY switch-on delay of 3 minutes Safety temperature Desired supply temperature

Factory setting

Off

On

50.0 °C

40.0 °C

Required accessories

1 Mixing shunt FHM-C1 with circulation pump UPM3 15-70

088U0094

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 PT1000 temperature sensor ESM-11

5

Thermal actuator TWA-A 24V NC suitable for mixing shunt FHM-C1

087B1165 088H3110

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Service Manual Danfoss Icon2TM
4 2
1
Danfoss

5

2

M

M

M

M

3

Circulation pump
1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  4 ESM-11 (PT-1000)
  5 Thermal actuator 24V TWA-A

Mains Power

AB432956914381en-010101

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY) Shunt 24V DC 24V RT 24V RT 24V RT PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

App 1

ESM-11

5

4

(PT-1000)

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Service Manual Danfoss Icon2TM
Application 02
2-pipe heating system with demand-controlled supply temperature
Application description Floor heating system with electronically controlled supply temperature. An optimum supply temperature is determined based on the rooms’ need for heat. The system uses a PT1000 sensor to detect the supply temperature. This sensor also ensures that the temperature does not exceed the maximum allowable temperature set as the safety temperature. If this sensor is connected, the system will control the circulation pump and heat demand signal for a boiler or heat pump, for example. The pump and heat demand signal will activate whenever there is a heating demand for at least one circuit. Both the pump (PWR1) and the heat demand signal (RELAY) are set to have a switch-on delay of 3 minutes by default. In this application, the Danfoss Icon2TM makes use of automatic balancing. During periods with a greater need for heat, this decreases the time spent `on’ for shorter pipes in small rooms and prioritizes longer pipes in large rooms within the system. The process is automatic and continuous. It ensures more efficient energy consumption and greater comfort.
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Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow PWR1 switch-on delay of 3 minutes RELAY switch-on delay of 3 minutes Temperature range Safety temperature Non-adjustable

Factory setting

Off

On

25.0­40.0 °C

50.0 °C

Required accessories

1 Mixing shunt FHM-C1 with circulation pump UPM3 15-70

088U0094

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 PT1000 temperature sensor ESM-11

5

Thermal actuator TWA-A 24V NC suitable for mixing shunt FHM-C1

087B1165 088H3110

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Service Manual Danfoss Icon2TM
4 2
1
Danfoss

5

2

M

M

M

M

3

Circulation pump
1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  4 ESM-11 (PT-1000)
  5 Thermal actuator 24V TWA-A

Mains Power

AB432956914381en-010101

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY) Shunt 24V DC 24V RT 24V RT 24V RT PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

App 2

ESM-11

5

4

(PT-1000)

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Service Manual Danfoss Icon2TM
Application 03
2-pipe heating/cooling system, changeover to cooling based on supply temperature
Application description Floor heating system with automatic changeover to cooling based on supply temperature input. A PT1000 sensor is used to monitor the supply temperature. The system will change over to heating or cooling based on this measurement. If the sensor is connected, the system will control the circulation pump, activating it if there is a need for heat or cooling in at least one room. The PT1000 sensor must be mounted to a pipe where flow will be assured at all times. The heating signal for e.g. a boiler or heat pump will only be activated if the system is in heating mode and there is a heating demand in at least one room. If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish.
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Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow PWR1 switch-on delay of 3 minutes RELAY switch-on delay of 3 minutes Change water temperature to heating Change water temperature to cooling

Factory setting

Off

On

25.0 °C

19.0 °C

Required accessories

1 Dew point sensor CF-DS

088U0251

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 PT1000 temperature sensor ESM-11

087B1165

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Service Manual Danfoss Icon2TM
4 2
1

2

M

M

M

M

3

Dew Point Sensor CF-DS
1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  4 ESM-11 (PT-1000)

Mains Power

AB432956914381en-010101

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

App 3

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

NO COM
N C GND
V +

1

4

Dew Point Sensor

ESM-11 (PT-1000)

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Service Manual Danfoss Icon2TM
Application 04
2-pipe heating/cooling system, changeover to cooling based on heat pump/external potential-free NO contact
Application description Floor heating system with automatic changeover to cooling mode, controlled by a heat pump or other heating and cooling source. The heat pump signals the Danfoss IconTM Master Controller to start cooling using a potential-free NO contact connected to IN2. The PWR1 circulation pump will activate whenever there is at least one room with a heating or cooling demand. The RELAY (heat source control) will activate whenever there is at least one room with a heating demand. If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish. If dew point monitoring is active, the pump and all actuator outputs will be inactive.
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Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow PWR1 switch-on delay of 3 minutes RELAY switch-on delay of 3 minutes IN2 input for changeover to cooling

Factory setting

Off

On

Required accessories

1 Heat pump or hybrid system

External supplier

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 Dew point sensor CF-DS

088U0251

5 External NO contact for changeover to cooling mode

External

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Service Manual Danfoss Icon2TM

4 2
1

2

M

M

M

M

3

Heat pump
1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  4 Dew Point Sensor CF-DS
  5 External voltage free contact from heatpump for changeover between heating and cooling

Mains Power

AB432956914381en-010101

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

(Volt free) Heat demand
signal

App 4

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

NO COM
N C GND
V+

Dew Point Sensor

4

5

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Service Manual Danfoss Icon2TM
Application 05
2-pipe heating/cooling system with (hybrid) heat pump, changeover to cooling based on reference thermostat
Application description
This application makes it possible to send separate control signals for both heating and cooling demands to a heat pump or hybrid system. The PWR1 (230V output) is active when there is a heating demand and the RELAY (potential-free contact) is used for cooling. To enable the PWR1 230V output to control the heat pump based on heating demand, the AMZ connection box converts the signal to a potential-free NO contact.
If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish.
The changeover between heating and cooling is controlled based on a reference thermostat. In nearly all cases, the living room is used as the reference.
To prevent excessive switching between heating and cooling modes, the following conditions must be met for the system to change over to cooling mode: · The room temperature measured by the reference thermostat must exceed the set
room temperature + dead band (adjustable from 0­4K). · The reference thermostat did not have a heating demand during the time delay
(adjustable from 0­24 hours). · If present, dew point monitoring must be inactive · The room thermostat must have cooling enabled (default = enabled).

Setting one thermostat as the reference thermostat In this application, one thermostat is set up as a reference thermostat. The temperature in this room determines whether the system is in heating or cooling mode.
There are two ways to set up a reference thermostat: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.6 setting to ON
Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

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Service Manual Danfoss Icon2TM
4 2
1

App 5

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

Reference Thermostat

2

M

M

M

M

3

Hybrid gas / Heat pump
1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  4 Dew Point Sensor CF-DS
  5 External relay

Mains Power

24V~

L N NO C NC L N C NO

1

5

2

AMZ connection box 3

Bridge

4 5

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

(Hybrid) heat pump

Dew Point Sensor 4

NO COM
N C GND
V+

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Service Manual Danfoss Icon2TM
Application 05 Continued
Explanation of heating and cooling for end user
No cooling will occur until the reference room temperature has exceeded the set temperature + dead band for the set time delay. For example, after the room’s temperature has been over 25 °C (21 °C + 4K) for six hours.
A room will never be cooled further than two degrees above the set temperature. If the temperature is set to 21 °C, for example, the room will be cooled to 23 °C. Heating will activate as soon as the room temperature drops below the set temperature.

Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow Dead band heating/cooling changeover Time delay for changeover to cooling mode

Factory setting

Off

On

4K

6h

Required accessories

1 Heat pump or hybrid system

External supplier

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 Dew point sensor CF-DS

088U0251

5 External relay – AMZ connection box

082G1636

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Service Manual Danfoss Icon2TM
Notes

Drawings

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Service Manual Danfoss Icon2TM
Application 06
3-pipe heating/cooling system with 3-way motorized ball valve, changeover to cooling based on reference thermostat

Application description

In this application, a 230V 3-way motorized ball valve is used to change over between heating and cooling modes.
The PWR1 230V output activates when the system is in cooling mode. If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish.
The changeover between heating and cooling is controlled based on a reference thermostat. In nearly all cases, the living room is used as the reference.
To prevent excessive switching between heating and cooling modes, the following conditions must be met for the system to change over to cooling mode: · The room temperature measured by the reference thermostat must exceed the set
room temperature + dead band (adjustable from 0­4K). · The reference thermostat did not have a heating demand during the time delay
(adjustable from 0­24 hours). · If present, dew point monitoring must be inactive · The room thermostat must have cooling enabled (default = enabled).

Setting one thermostat as the reference thermostat In this application, one thermostat is set up as a reference thermostat. The temperature in this room determines whether the system is in heating or cooling mode.
There are two ways to set up a reference thermostat: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.6 setting to ON
Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

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Service Manual Danfoss Icon2TM
2 1
4

Reference Thermostat

2

M

M

M

M

3

AMZ 113 230V

1 set Danfoss Manifold (types FHF or BasicPlus or SSM)

Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  4 Dew Point Sensor CF-DS

Mains Power
1 312 AMZ 113

AB432956914381en-010101

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

NO COM
N C GND
V+

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

App 6
4
Dew Point Sensor © Copyright Danfoss Climate Solutions | 2023.01 | 25

Service Manual Danfoss Icon2TM
Application 06 Continued
Explanation of heating and cooling for end user
No cooling will occur until the reference room’s temperature has exceeded the set temperature + set dead band for longer than the set time delay. For example, after the room’s temperature has been over 25 °C (21 °C + 4K) for six hours.
The room’s temperature will never be cooled further than 2 degrees above the set temperature. If the temperature is set to 21 °C, for example, the room will be cooled to 23 °C. Heating will activate as soon as the room temperature drops below the set temperature.

Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow Dead band heating/cooling changeover Time delay for changeover to cooling mode

Factory setting

Off

On

4K

6h

Required accessories

1 3-way motorized ball valve 230V AMZ 113 DN20

082G5419

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 Dew point sensor CF-DS

088U0251

26 | © Copyright Danfoss Climate Solutions | 2023.01

AB432956914381en-010101

Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 27

Service Manual Danfoss Icon2TM
Application 07
3-pipe heating/cooling system with two 2-way control valves with thermal actuators, changeover to cooling based on reference thermostat
Application description
In this application, two 2-way motorized control valves are used to change over between heating and cooling modes. The thermal actuator on the 2-way cooling control valve will stay open as long as the system is in cooling mode. The thermal actuator for heating will stay open as long as the system is in heating mode.
Optionally, you can use the 230V pump control PWR1 and RELAY heat source control.
If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish.
The changeover between heating and cooling is controlled based on a reference thermostat. In nearly all cases, the living room is used as the reference.
To prevent excessive switching between heating and cooling modes, the following conditions must be met for the system to change over to cooling mode: · The room temperature measured by the reference thermostat must exceed the set
room temperature + dead band (adjustable from 0­4K). · The reference thermostat did not have a heating demand during the time delay
(adjustable from 0­24 hours). · If present, dew point monitoring must be inactive · The room thermostat must have cooling enabled (default = enabled).

Setting one thermostat as the reference thermostat In this application, one thermostat is set up as a reference thermostat. The temperature in this room determines whether the system is in heating or cooling mode.
There are two ways to set up a reference thermostat: 1. Using the Installer App on a smartphone 2. Using the Installer menu on the thermostat itself To do so, set the ME.6 setting to ON
Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the Installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

28 | © Copyright Danfoss Climate Solutions | 2023.01

AB432956914381en-010101

Service Manual Danfoss Icon2TM

5a 4 2
1
5b

1

Reference Thermostat

2

M

M

M

M

3

2-way valve RA-C

1 set Danfoss Manifold (types FHF or BasicPlus or SSM)

Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  4 Dew Point Sensor CF-DS

5a Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  5b Thermal actuators, 230V / 24V* TWA-A
• Requires TWA conversion module

Mains Power

AB432956914381en-010101

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

App 7

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

12 345

NO COM
N C GND
V+

5a 5b

4
Dew Point Sensor

© Copyright Danfoss Climate Solutions | 2023.01 | 29

Service Manual Danfoss Icon2TM
Application 07 Continued
Explanation of heating and cooling for end user No cooling will occur until the reference room temperature has exceeded the set temperature + set dead band for longer than the set time delay. For example, after the room’s temperature has been over 25 °C (21 °C + 4K) for six hours. The room’s temperature will never be cooled further than 2 degrees above the set temperature. If the temperature is set to 21 °C, for example, the room will be cooled to 23 °C. Heating will activate as soon as the room temperature drops below the set temperature.
30 | © Copyright Danfoss Climate Solutions | 2023.01

Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow Dead band heating/cooling changeover Time delay for changeover to cooling mode

Factory setting

Off

On

4K

6h

Required accessories

1 2-way control valve RA-C DN20

013G3096

Compression ferrule set 22mm x 1″ for RA-C 20

013U0135 (x4)

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 Dew point sensor CF-DS

088U0251

5a/b Thermal actuator TWA-A 230V NC suitable for RA-C DN20

088H3112 (x2)

AB432956914381en-010101

Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 31

Service Manual Danfoss Icon2TM
Application 08
3-pipe heating/cooling system with 2 ball valves with actuators, changeover to cooling based on reference thermostat
Application description
In this application, two 230V two-way motorized ball valves are used to change over between heating and cooling modes. The ball valve for cooling will open if one or more rooms require cooling. The ball valve for heating will open if one or more rooms require heating.
If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish.
The changeover between heating and cooling is controlled based on a reference thermostat. In nearly all cases, the living room is used as the reference.
To prevent excessive switching between heating and cooling modes, the following conditions must be met for the system to change over to cooling mode: · The room temperature measured by the reference thermostat must exceed the set
room temperature + dead band (adjustable from 0­4K). · The reference thermostat did not have a heating demand during the time delay
(adjustable from 0­24 hours). · If present, dew point monitoring must be inactive. · The room thermostat must have cooling enabled (default = enabled).

Setting one thermostat as the reference thermostat In this application, one thermostat is set up as a reference thermostat. The temperature in this room determines whether the system is in heating or cooling mode.
There are two ways to set up a reference thermostat: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.6 setting to ON
Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

32 | © Copyright Danfoss Climate Solutions | 2023.01

AB432956914381en-010101

Service Manual Danfoss Icon2TM

App 8

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

Reference Thermostat

M

M

M

M

1a AMZ 112 230V
1b AMZ 112 230V
1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  4 Dew Point Sensor CF-DS

Mains Power

1a 3 1 2 AMZ 112

3 1 2 1b AMZ 112

AB432956914381en-010101

NO COM
N C GND
V+

4
Dew Point Sensor
© Copyright Danfoss Climate Solutions | 2023.01 | 33

Service Manual Danfoss Icon2TM
Application 08 Continued
Explanation of heating and cooling for end user
No cooling will occur until the reference room’s temperature has exceeded the set temperature + set dead band for longer than the set time delay. For example, after the room’s temperature has been over 25 °C (21 °C + 4K) for six hours.
The room’s temperature will never be cooled further than 2 degrees above the set temperature. If the temperature is set to 21 °C, for example, the room will be cooled to 23 °C. Heating will activate as soon as the room temperature drops below the set temperature.

Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow Dead band heating/cooling changeover Time delay for changeover to cooling mode

Factory setting

Off

On

4K

6h

Required accessories

1a/b 2-way motorized ball valve 230V AMZ 112 DN20

082G5407 (x2)

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 Dew point sensor CF-DS

088U0251

34 | © Copyright Danfoss Climate Solutions | 2023.01

AB432956914381en-010101

Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 35

Service Manual Danfoss Icon2TM

Application 09
4-pipe heating/cooling system with 6-way motorized ball valve, changeover to cooling based on reference thermostat
Application description
In this application, a 230V 6-way motorized ball valve is used to change over between heating and cooling modes.
The RELAY activates when the system is in heating mode and is used to control the 6-way ball valve. The PWR1 output is active in both heating and cooling mode. It can optionally be used to operate a 230V 2-way control valve. This acts as an additional shut-off valve when there is no need for heat or cooling, reducing unnecessary consumption.
If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish.
The changeover between heating and cooling is controlled based on a reference thermostat. In nearly all cases, the living room is used as the reference.
To prevent excessive switching between heating and cooling modes, the following conditions must be met for the system to change over to cooling mode: · The room temperature measured by the reference thermostat must exceed the set room
temperature + dead band (adjustable from 0­4K). · The reference thermostat did not have a heating demand during the time delay
(adjustable from 0­24 hours). · If present, dew point monitoring must be inactive · The room thermostat must have cooling enabled (default = enabled).

Setting one thermostat as the reference thermostat In this application, one thermostat is set up as a reference thermostat. The temperature in this room determines whether the system is in heating or cooling mode.
There are two ways to set up a reference thermostat: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.6 setting to ON
Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

36 | © Copyright Danfoss Climate Solutions | 2023.01

AB432956914381en-010101

Service Manual Danfoss Icon2TM

Heating side 4-pipe riser

6 4

3

PORT 1 PORT 4

2
PORT 2
PORT 3
1

PORT 5 PORT 6

4-pipe riser Cooling side
Reference Thermostat

4

M

M

M

M

5

ChangeOver6 valve

ChangeOver6 actuator 230V

AB-QM DN20 + TWA-Q 230V NC
4 1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
5 Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  6 Dew Point Sensor CF-DS

Mains Power

AB432956914381en-010101

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

NO COM
NC GND
V+

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

App 9
Dew Point Sensor © Copyright Danfoss Climate Solutions | 2023.01 | 37

Service Manual Danfoss Icon2TM
Application 9 Continued
Explanation of heating and cooling for end user No cooling will occur until the reference room’s temperature has exceeded the set temperature + set dead band for longer than the set time delay. For example, after the room’s temperature has been over 25 °C (21 °C + 4K) for six hours. The room’s temperature will never be cooled further than 2 degrees above the set temperature. If the temperature is set to 21 °C, for example, the room will be cooled to 23 °C. Heating will activate as soon as the room temperature drops below the set temperature.
38 | © Copyright Danfoss Climate Solutions | 2023.01

Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow Dead band heating/cooling changeover Time delay for changeover to cooling mode

Factory setting

Off

On

4K

6h

Required accessories

1 6-way ball valve ChangeOver6 DN20

003Z3151

2 Actuator 230V suitable for ChangeOver6 DN20

003Z3154

3 2-way control valve with flow regulator AB-QM DN20

003Z8203

Thermal actuator TWA-Q 230V NC suitable for AB-QM DN20 082F1600

Threaded fittings R3/4″ suitable for AB-QM DN20

003Z0233 (x2)

4 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

5 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

6 Dew point sensor CF-DS

088U0251

AB432956914381en-010101

Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 39

Service Manual Danfoss Icon2TM

Application 10
4-pipe heating/cooling system with four 2-way control valves with thermal actuators, changeover to cooling based on reference thermostat
Application description
In this application, four 2-way motorized control valves are used to change over between heating and cooling modes. The thermal actuators on the 2-way control valves for cooling will stay open as long as the system is in cooling mode. The thermal actuators for heating will be open as long as the system is in heating mode.
Optionally, you can use the 230V pump control PWR1 and RELAY heat source control.
If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish.
The changeover between heating and cooling is controlled based on a reference thermostat. In nearly all cases, the living room is used as the reference.
To prevent excessive switching between heating and cooling modes, the following conditions must be met for the system to change over to cooling mode: · The room temperature measured by the reference thermostat must exceed the set room
temperature + dead band (adjustable from 0­4K). · The reference thermostat did not have a heating demand during the time delay
(adjustable from 0­24 hours). · If present, dew point monitoring must be inactive. · The room thermostat must have cooling enabled (default = enabled).

Setting one thermostat as the reference thermostat In this application, one thermostat is set up as a reference thermostat. The temperature in this room determines whether the system is in heating or cooling mode.
There are two ways to set up a reference thermostat: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.6 setting to ON
Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

40 | © Copyright Danfoss Climate Solutions | 2023.01

AB432956914381en-010101

Service Manual Danfoss Icon2TM

6
Heating supply
1
6
Cooling supply
1 6
Heating return
1
6
Cooling return
1
Reference Thermostat

4 2

2

M

M

M

M

3

1 2-way valve RA-C
2 1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
3 Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  4 Dew Point Sensor CF-DS

Mains Power

5 Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  6 Thermal actuators, 230V / 24V* TWA-A
• Requires TWA conversion module

AB432956914381en-010101

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

App 10

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

1 23 45

NO COM
N C GND
V+

Dew Point Sensor

6

4

© Copyright Danfoss Climate Solutions | 2023.01 | 41

Service Manual Danfoss Icon2TM
Application 10 Continued
Explanation of heating and cooling for end user No cooling will occur until the reference room temperature has exceeded the set temperature + set dead band for longer than the set time delay. For example, after the room’s temperature has been over 25 °C (21 °C + 4K) for six hours. The room’s temperature will never be cooled further than 2 degrees above the set temperature. If the temperature is set to 21 °C, for example, the room will be cooled to 23 °C. Heating will activate as soon as the room temperature drops below the set temperature.
42 | © Copyright Danfoss Climate Solutions | 2023.01

Installer App settings Function

PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow Dead band heating/cooling changeover Time delay for changeover to cooling mode

Factory setting

Off

On

4K

6h

Required accessories

1 2-way control valve RA-C DN20

013G3096

Compression ferrule set 22mm x 1″ for RA-C 20

013U0135 (x8)

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 Dew point sensor CF-DS

088U0251

5/6 Thermal actuator TWA-A 230V NC suitable for RA-C DN20

088H3112 (x4)

AB432956914381en-010101

Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 43

Service Manual Danfoss Icon2TM

Application 11
4-pipe heating/cooling system with 6-way ball valve with fixed heating and cooling supply temperature control, changeover to cooling based on reference thermostat
Application description
The RELAY activates when the system is in heating mode and is used to control the 230V 6-way ball valve. The 230V pump control PWR1 is active in both heating and cooling mode.
The supply water temperature set for both heating and cooling is controlled by the TWA-Q thermal actuator connected to the `Shunt 24V DC’ output. The PT1000 temperature sensor on the supply line measures the supply temperature. If there is no demand for heat or cooling in one or more rooms, the actuator will remain closed. The AB-QM can also be used to set the desired maximum volumetric flow rate. To prevent damage to the floor’s construction and finish, add a dew point sensor.
The changeover between heating and cooling is controlled based on a reference thermostat. The living room is set as the reference.
To prevent excessive switching between heating and cooling modes, the following conditions must be met for the system to change over to cooling mode: · The room temperature measured by the reference thermostat must exceed the set room
temperature + dead band (adjustable 0­4K). · The reference thermostat did not have a heating demand during the time delay
(adjustable from 0­24 hours). · If present, dew point monitoring must be inactive. · The room thermostat must have cooling enabled (default = enabled).

Setting one thermostat as the reference thermostat In this application, one thermostat is set up as a reference thermostat. The temperature in this room determines whether the system is in heating or cooling mode.
There are two ways to set up a reference thermostat: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.6 setting to ON
Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

44 | © Copyright Danfoss Climate Solutions | 2023.01

AB432956914381en-010101

Service Manual Danfoss Icon2TM

Heating side 4-pipe riser

6 5 4

PORT 1 PORT 4

2

9

PORT 2

PORT 3
1

PORT 5 PORT 6

4

4-pipe riser Cooling side

3

8

MMMM

7

ChangeOver6 valve DN20

ChangeOver6 actuator 230V

Mains Power

AB-QM DN20 + TWA-Q 24V NC

4 1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
5 ESM-11 PT1000-sensor

6 Dew Point Sensor CF-DS

8

Reference

7 Thermal actuators, 230V / 24V* TWA-A

Thermostat

• Requires TWA conversion module

8 Circulationpump
2 9 Heatexchanger

AB432956914381en-010101

3: Blue N 2: Black L 1: Brown
NO COM
NC GND
V +

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY) Shunt 24V DC 24V RT 24V RT 24V RT PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

App 11

ESM-11

3

(PT-1000)

Dew Point Sensor

6

5

© Copyright Danfoss Climate Solutions | 2023.01 | 45

Service Manual Danfoss Icon2TM

Application 11 Continued
Explanation of heating and cooling for end user
No cooling will occur until the reference room temperature has exceeded the set temperature + set dead band for longer than the set time delay. For example, after the room’s temperature has been over 25 °C (21 °C + 4K) for six hours.
The room’s temperature will never be cooled further than 2 degrees above the set temperature. If the temperature is set to 21 °C, for example, the room will be cooled to 23 °C. Heating will activate as soon as the room temperature drops below the set temperature.

Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow PWR1 switch-on delay of 3 minutes Dead band heating/cooling changeover Time delay for changeover to cooling mode Heating supply temperature Cooling supply temperature Heating safety temperature Cooling safety temperature
46 | © Copyright Danfoss Climate Solutions | 2023.01

Factory setting

Off

On

4K

6h

40.0 °C

18.0 °C

50.0 °C

17.0 °C

Required accessories

1 6-way ball valve ChangeOver6 DN20

003Z3151

2 Actuator 230V suitable for ChangeOver6 DN20

003Z3154

3 2-way control valve with flow regulator AB-QM DN20

003Z8203

Thermal actuator TWA-Q 24V NC suitable for AB-QM DN20

082F1602

Threaded fittings R3/4″ suitable for AB-QM DN20

003Z0233 (x2)

4 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

5 PT1000 temperature sensor ESM-11

087B1165

6 Dew point sensor CF-DS

088U0251

7 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

8 “Circulation pump Wilo Para 15-130/6″

145H4269

9 Heat exchanger XB06H-1-26

145H3671

AB432956914381en-010101

Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 47

Service Manual Danfoss Icon2TM
Application 12
4-pipe heating/cooling system with 6-way ball valve with demand-controlled heating supply temperature and fixed cooling supply temperature, changeover to cooling based on reference thermostat
Application description
The RELAY activates when the system is in heating mode and is used to control the 230V 6-way ball valve. The 230V pump control PWR1 is active in both heating and cooling mode.
The water temperature for heating and cooling is controlled by the TWA-Q thermal actuator connected to output `Shunt 24V DC’. The optimum supply temperature in heating mode is calculated based on the heating demand for the home. The PT1000 sensor on the supply line measures the temperature of the water. If there is no demand for heat or cooling in one or more rooms, the actuator will remain closed. The AB-QM can also be used to set the desired maximum volumetric flow rate. To prevent damage to the floor’s construction and finish, add a dew point sensor.
The changeover between heating and cooling is controlled based on a reference thermostat. The living room is set as the reference.
To prevent excessive switching between heating and cooling mode, the following conditions must be met for the system to change over to cooling mode: · The room temperature measured by the reference thermostat must exceed the set
room temperature + dead band (adjustable 0­4K). · There was no heating demand for the reference thermostat during the time delay
(adjustable 0­24 hours). · If present, dew point monitoring must be inactive. · The room thermostat must have cooling enabled (default = enabled).

Setting one thermostat as the reference thermostat In this application, one thermostat is set up as a reference thermostat. The temperature in this room determines whether the system is in heating or cooling mode.
There are two ways to set up a reference thermostat: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.6 setting to ON
Disabling cooling (Bathroom) If the bathroom has underfloor heating and has an Icon2TM room thermostat, you can disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

48 | © Copyright Danfoss Climate Solutions | 2023.01

AB432956914381en-010101

Service Manual Danfoss Icon2TM

Heating side 4-pipe riser

6 5 4

PORT 1 PORT 4

2

9

PORT 2

PORT 3
1

PORT 5 PORT 6

4

4-pipe riser Cooling side

3

MMMM
8

7

ChangeOver6 valve DN20

ChangeOver6 actuator 230V

Mains Power

AB-QM DN20 + TWA-Q 24V NC

4 1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
5 ESM-11 PT1000-sensor

6 Dew Point Sensor CF-DS

8

Reference

7 Thermal actuators, 230V / 24V* TWA-A

Thermostat

• Requires TWA conversion module

8 Circulationpump
2 9 Heatexchanger

AB432956914381en-010101

3: Blue N 2: Black L 1: Brown
NO COM
NC GND
V +

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY) Shunt 24V DC 24V RT 24V RT 24V RT PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

App 12

ESM-11

3

(PT-1000)

Dew Point Sensor

6

5

© Copyright Danfoss Climate Solutions | 2023.01 | 49

Service Manual Danfoss Icon2TM

Application 12 Continued
Explanation of heating and cooling for end user
No cooling will occur until the reference room temperature has exceeded the set temperature + set dead band for longer than the set time delay. For example, after the room’s temperature has been over 25 °C (21 °C + 4K) for six hours.
The room’s temperature will never be cooled further than 2 degrees above the set temperature. If the temperature is set to 21 °C, for example, the room will be cooled to 23 °C. Heating will activate as soon as the room temperature drops below the set temperature.

Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow PWR1 switch-on delay of 3 minutes Dead band heating/cooling changeover Time delay for changeover to cooling mode Heating supply temperature range, demand-controlled Heating safety temperature Cooling supply temperature Cooling safety temperature
50 | © Copyright Danfoss Climate Solutions | 2023.01

Factory setting

Off

On

4K

6h

25.0­40.0 °C

50.0 °C

18.0 °C

17.0 °C

Required accessories

1 6-way ball valve ChangeOver6 DN20

003Z3151

2 Actuator 230V suitable for ChangeOver6 DN20

003Z3154

3 2-way control valve with flow regulator AB-QM DN20

003Z8203

Thermal actuator TWA-Q 24V NC suitable for AB-QM DN20

082F1602

Threaded fittings R3/4″ suitable for AB-QM DN20

003Z0233 (x2)

4 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1”

088U0822

5 PT1000 temperature sensor ESM-11

087B1165

6 Dew point sensor CF-DS

088U0251

7 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

8 “Circulation pump Wilo Para 15-130/6″

145H4269

9 Heat exchanger XB06H-1-26

145H3671

AB432956914381en-010101

Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 51

Service Manual Danfoss Icon2TM

Application 13
4-pipe heating/cooling system with 6-way ball valve with fixed heating and cooling supply temperature control, changeover to cooling based on external (manual) potential-free NO contact
Application description
The RELAY activates when the system is in heating mode and is used to control the 230V 6-way ball valve. The 230V pump control PWR1 is active in both heating and cooling mode.
The supply water temperature set for both heating and cooling is controlled by the TWA-Q thermal actuator connected to the `Shunt 24V DC’ output. The PT1000 temperature sensor on the supply line measures the supply temperature. If there is no demand for heat or cooling in one or more rooms, the actuator will remain closed. The AB-QM can also be used to set the desired maximum volumetric flow rate. To prevent damage to the floor’s construction and finish, add a dew point sensor.
A relay or potential-free contact is connected to input IN2 to control the changeover between heating and cooling modes. When the external contact is closed, the system will change over to cooling mode.

Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

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Heating side 4-pipe riser

6 5 4

PORT 1 PORT 4

2

9

PORT 2

PORT 3
1

PORT 5 PORT 6

4

4-pipe riser Cooling side

3

8

MMMM

7

ChangeOver6 valve DN20

ChangeOver6 actuator 230V

Mains Power

AB-QM DN20 + TWA-Q 24V NC
4 1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
5 ESM-11 PT1000-sensor
6 Dew Point Sensor CF-DS
8
7 Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  8 Circulationpump 2
  9 Heatexchanger
  10 External switch for manual changeover between heating and cooling

AB432956914381en-010101

3: Blue N 2: Black L 1: Brown
NO COM
NC GND
V +

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY) Shunt 24V DC 24V RT 24V RT 24V RT PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

App 13

ESM-11

3

(PT-1000)

Dew Point Sensor

6

10

5

© Copyright Danfoss Climate Solutions | 2023.01 | 53

Service Manual Danfoss Icon2TM
Application 13 Continued
Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow PWR1 switch-on delay of 3 minutes Heating supply temperature Cooling supply temperature Heating safety temperature Cooling safety temperature

Factory setting

Off

On

40.0 °C

18.0 °C

50.0 °C

17.0 °C

Required accessories

1 6-way ball valve ChangeOver6 DN20

003Z3151

2 Actuator 230V suitable for ChangeOver6 DN20

003Z3154

3 2-way control valve with flow regulator AB-QM DN20

003Z8203

Thermal actuator TWA-Q 24V NC suitable for AB-QM DN20

082F1602

Threaded fittings R3/4″ suitable for AB-QM DN20

003Z0233 (x2)

4 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1”

088U0822

5 PT1000 temperature sensor ESM-11

087B1165

6 Dew point sensor CF-DS

088U0251

7 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

8 “Circulation pump Wilo Para 15-130/6″

145H4269

9 Heat exchanger XB06H-1-26

145H3671

10 Wall switch for manual changeover to cooling

External supplier

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Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 55

Service Manual Danfoss Icon2TM
Application 14
4-pipe heating/cooling system with 6-way ball valve with demand-controlled heating supply temperature and fixed cooling supply temperature, changeover to cooling based on external (manual) potential-free NO contact
Application description
The RELAY activates when the system is in heating mode and is used to control the 230V 6-way ball valve. The 230V pump control PWR1 is active in both heating and cooling mode.
The water temperature for heating and cooling is controlled by the TWA-Q thermal actuator connected to output `Shunt 24V DC’. The optimum supply temperature in heating mode is calculated based on the heating demand for the home. The PT1000 sensor on the supply line measures the temperature of the water. If there is no demand for heat or cooling in one or more rooms, the actuator will remain closed.
The AB-QM can also be used to set the desired maximum volumetric flow rate.
To prevent damage to the floor’s construction and finish, add a dew point sensor.
A relay or potential-free contact is connected to input IN2 to control the changeover between heating and cooling modes. When the external contact is closed, the system will change over to cooling mode.

Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

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Heating side 4-pipe riser

6 5 4

PORT 1 PORT 4

2

9

PORT 2

PORT 3
1

PORT 5 PORT 6

4

4-pipe riser Cooling side

3

MMMM
8

7

ChangeOver6 valve DN20

ChangeOver6 actuator 230V

Mains Power

AB-QM DN20 + TWA-Q 24V NC
4 1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
5 ESM-11 PT1000-sensor
6 Dew Point Sensor CF-DS
8
7 Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  8 Circulationpump 2
  9 Heatexchanger
  10 External switch for manual changeover between heating and cooling

AB432956914381en-010101

3: Blue N 2: Black L 1: Brown
NO COM
NC GND
V +

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY) Shunt 24V DC 24V RT 24V RT 24V RT PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

App 14

ESM-11

3

(PT-1000)

Dew Point Sensor

6

10

5

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Service Manual Danfoss Icon2TM
Application 14 Continued
Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow PWR1 switch-on delay of 3 minutes Heating supply temperature range, demand-controlled Heating safety temperature Cooling supply temperature Cooling safety temperature

Factory setting

Off

On

25.0­40.0 °C

50.0 °C

18.0 °C

17.0 °C

Required accessories

1 6-way ball valve ChangeOver6 DN20

003Z3151

2 Actuator 230V suitable for ChangeOver6 DN20

003Z3154

3 2-way control valve with flow regulator AB-QM DN20

003Z8203

Thermal actuator TWA-Q 24V NC suitable for AB-QM DN20

082F1602

Threaded fittings R3/4″ suitable for AB-QM DN20

003Z0233 (x2)

4 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1”

088U0822

5 PT1000 temperature sensor ESM-11

087B1165

6 Dew point sensor CF-DS

088U0251

7 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

8 “Circulation pump Wilo Para 15-130/6″

145H4269

9 Heat exchanger XB06H-1-26

145H3671

10 Wall switch for manual changeover to cooling

External supplier

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AB432956914381en-010101

Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 59

Service Manual Danfoss Icon2TM
Application 15
2-pipe heating/cooling system with (hybrid) heat pump, changeover to cooling based on external (manual) potential-free NO contact
Application description
This application makes it possible to send separate control signals for both heating and cooling demands to a heat pump or hybrid system. The PWR1 (230V output) is active when there is a heating demand and the RELAY (potential-free contact) is used for cooling.
To enable the PWR1 230V output to control the heat pump based on heating demand, the AMZ connection box converts the signal to a potential-free NO contact.
If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish.
A relay or potential-free contact is connected to input IN2 to control the changeover between heating and cooling modes. When the external contact is closed, the system will change over to cooling mode.

Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

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4 2
1 1

App 15

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

2

M

M

M

M

3

Hybrid gas / Heat pump

Mains Power

1 set Danfoss Manifold (types FHF or BasicPlus or SSM)

Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module

4 Dew Point Sensor CF-DS

24V~

L N NO C NC L N C NO

NO COM
N C GND
V+

5 External relay

6 External switch for manual changeover between heating and cooling

1

2 AMZ connection box 3

Bridge

4 5

Hybrid gas / Heat pump

Dew Point Sensor

6

AB432956914381en-010101

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Service Manual Danfoss Icon2TM
Application 15
Continued
62 | © Copyright Danfoss Climate Solutions | 2023.01

Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow

Factory setting

Off

On

Required accessories

1 Heat pump or hybrid system

External supplier

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 Dew point sensor CF-DS

088U0251

5 External relay – AMZ connection box

082G1636

6 Wall switch for manual changeover to cooling

External supplier

AB432956914381en-010101

Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 63

Service Manual Danfoss Icon2TM
Application 16
3-pipe heating/cooling system with 3-way motorized ball valve, changeover to cooling based on external potential-free NO contact
Application description
In this application, a 230V 3-way motorized ball valve is used to change over between heating and cooling modes.
The PWR1 230V output activates when the system is in cooling mode.
If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish.
A relay or potential-free contact is connected to input IN2 to control the changeover between heating and cooling modes. When the external contact is closed, the system will change over to cooling mode.

Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

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2
1 4

2

M

M

M

M

3

AMZ 113 230V

1 set Danfoss Manifold (types FHF or BasicPlus or SSM)

Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  4 Dew Point Sensor CF-DS

5 External switch for manual changeover between heating and cooling

Mains Power
1 312 AMZ 113

AB432956914381en-010101

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

NO COM
N C GND
V+

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

App 16
4
Dew Point Sensor
5
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Service Manual Danfoss Icon2TM
Application 16
Continued
66 | © Copyright Danfoss Climate Solutions | 2023.01

Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow

Factory setting

Off

On

Required accessories

1 3-way motorized ball valve 230V AMZ 113 DN20

082G5419

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 Dew point sensor CF-DS

088U0251

5 Wall switch for manual changeover to cooling

External supplier

AB432956914381en-010101

Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 67

Service Manual Danfoss Icon2TM
Application 17
3-pipe heating/cooling system with two 2-way control valves with thermal actuators, changeover to cooling based on external potential-free NO contact
Application description
In this application, two 2-way motorized control valves are used to change over between heating and cooling modes. The thermal actuator on the 2-way cooling control valve will stay open as long as the system is in cooling mode. The thermal actuator for heating will stay open as long as the system is in heating mode.
Optionally, you can use the 230V pump control PWR1 and RELAY heat source control.
If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish.
A relay or potential-free contact is connected to input IN2 to control the changeover between heating and cooling modes. When the external contact is closed, the system will change over to cooling mode.

Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

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5a 4 2
1
5b

1

2

M

M

M

M

3
2-way valve RA-C

1 set Danfoss Manifold (types FHF or BasicPlus or SSM)

Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  4 Dew Point Sensor CF-DS

5a Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  5b Thermal actuators, 230V / 24V* TWA-A
• Requires TWA conversion module
  6 External switch for manual changeover between heating and cooling

Mains Power

AB432956914381en-010101

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

App 17

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

12345

NO COM
N C GND
V+

4
Dew Point Sensor

5a 5b

6

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Service Manual Danfoss Icon2TM
Application 17
Continued
70 | © Copyright Danfoss Climate Solutions | 2023.01

Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow

Factory setting

Off

On

Required accessories

1 2-way control valve RA-C DN20

013G3096

Compression ferrule set 22mm x 1″ for RA-C 20

013U0135 (x4)

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 Dew point sensor CF-DS

088U0251

5a/b Thermal actuator TWA-A 230V NC suitable for RA-C DN20

088H3112 (x2)

6 Wall switch for manual changeover to cooling

External supplier

AB432956914381en-010101

Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 71

Service Manual Danfoss Icon2TM
Application 18
3-pipe heating/cooling system with two ball valves with actuators, changeover to cooling based on external potentialfree NO contact
Application description
In this application, two 230V two-way motorized ball valves are used to change over between heating and cooling modes. The ball valve for cooling will open if one or more rooms require cooling. The ball valve for heating will open if one or more rooms require heating.
If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish.
A relay or potential-free contact is connected to input IN2 to control the changeover between heating and cooling modes. When the external contact is closed, the system will change over to cooling mode.

Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

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Service Manual Danfoss Icon2TM

App 18

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

M

M

M

M

1a AMZ 112 230V
1b AMZ 112 230V
1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  4 Dew Point Sensor CF-DS
  5 External switch for manual changeover between heating and cooling

Mains Power
1a 3 1 2 AMZ 112

3 1 2 1b AMZ 112

AB432956914381en-010101

NO COM
N C GND
V+

4
Dew Point Sensor
5
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Service Manual Danfoss Icon2TM
Application 18
Continued
74 | © Copyright Danfoss Climate Solutions | 2023.01

Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow

Factory setting

Off

On

Required accessories

1a/b 2-way motorized ball valve 230V AMZ 112 DN20

082G5407

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 Dew point sensor CF-DS

088U0251

5 Wall switch for manual changeover to cooling

External supplier

AB432956914381en-010101

Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 75

Service Manual Danfoss Icon2TM
Application 19
4-pipe heating/cooling system with 6-way motorized ball valve, changeover to cooling based on external potential-free NO contact
Application description
In this application, a 230V 6-way motorized ball valve is used to change over between heating and cooling modes.
The RELAY activates when the system is in heating mode and is used to control the 6-way ball valve. The PWR1 output is active in both heating and cooling mode. It can optionally be used to operate a 230V 2-way control valve. This acts as an additional shut-off valve when there is no need for heat or cooling, reducing unnecessary consumption.
If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish.
A relay or potential-free contact is connected to input IN2 to control the changeover between heating and cooling modes. When the external contact is closed, the system will change over to cooling mode.

Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

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Service Manual Danfoss Icon2TM

Heating side 4-pipe riser

6 4

3

PORT 1 PORT 4

2
PORT 2
PORT 3
1

PORT 5 PORT 6

4-pipe riser Cooling side

4

M

M

M

M

5

ChangeOver6 valve

ChangeOver6 actuator 230V

AB-QM DN20 + TWA-Q 230V NC
4 1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
5 Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  6 Dew Point Sensor CF-DS
  7 External switch for manual changeover between heating and cooling

Mains Power

AB432956914381en-010101

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

NO COM
NC GND
V+

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

App 19
Dew Point Sensor
7
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Service Manual Danfoss Icon2TM
Application 19 Continued
Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow

Factory setting

Off

On

Required accessories

1 6-way ball valve ChangeOver6 DN20

003Z3151

2 Actuator 230V suitable for ChangeOver6 DN20

003Z3154

3 2-way control valve with flow regulator AB-QM DN20

003Z8203

Thermal actuator TWA-Q 230V NC suitable for AB-QM DN20 082F1600

Threaded fittings R3/4″ suitable for AB-QM DN20

003Z0233 (x2)

4 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1″

088U0822

5 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

6 Dew point sensor CF-DS

088U0251

7 Wall switch for manual changeover to cooling

External supplier

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Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 79

Service Manual Danfoss Icon2TM
Application 20
4-pipe heating/cooling system with four 2-way control valves with thermal actuators, changeover to cooling based on external potential-free NO contact
Application description
In this application, four 2-way motorized control valves are used to change over between heating and cooling modes. The thermal actuators on the 2-way control valves for cooling will stay open as long as the system is in cooling mode. The thermal actuators for heating will be open as long as the system is in heating mode.
Optionally, you can use the 230V pump control PWR1 and RELAY heat source control.
If it is not possible to prevent the supply temperature from dropping below the dew point in cooling mode, it is strongly recommended that you add a dew point sensor. Condensation can result in permanent damage to the floor’s construction and finish.
A relay or potential-free contact is connected to input IN2 to control the changeover between heating and cooling modes. When the external contact is closed, the system will change over to cooling mode.

Disabling cooling (Bathroom) If there is a bathroom with underfloor heating and an Icon2TM room thermostat, you may want to disable cooling for this room. Cooling a bathroom will cause condensation to form on the floor.
There are two ways to disable cooling mode for a room: 1. Using the Installer App on a smartphone 2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF

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5 4
Heating supply
2 1

6
Cooling supply
1 5
Heating return
1

6
Cooling return M
1
1 2-way valve RA-C
2 1 set Danfoss Manifold (types FHF or BasicPlus or SSM)
3 Thermal actuators, 230V / 24V* TWA-A

• Requires TWA conversion module
  4 Dew Point Sensor CF-DS
  5 Thermal actuators, 230V / 24V* TWA-A
• Requires TWA conversion module
  6 Thermal actuators, 230V / 24V* TWA-A
• Requires TWA conversion module
  7 External switch for manual changeover between heating and cooling

2

M

M

5

M
Mains Power

AB432956914381en-010101

L (PWR1) N (PWR1)
(PWR1) L (PWR2) N (PWR2) NO (RELAY) NC (RELAY) COM (RELAY)

App 20

PWR3 24V DC EXT Input 1 EXT Input 2 PT1000

12345

NO COM
N C GND
V+

Dew Point Sensor

6

4

7

© Copyright Danfoss Climate Solutions | 2023.01 | 81

Service Manual Danfoss Icon2TM
Application 20
Continued
82 | © Copyright Danfoss Climate Solutions | 2023.01

Installer App settings Function
PWM+ proportional control of actuator outputs Heat pump optimizer ­ maintenance of minimum flow

Factory setting

Off

On

Required accessories

1 2-way control valve RA-C DN20

013G3096

Compression ferrule set 22mm x 1″ for RA-C 20

013U0135 (x8)

2 Stainless steel floor heating manifold SSM-F, 2­12 groups

088U0752 to 088U0762

Set of 2 mounting brackets

088U0585

Set of 2 ball valves 1”

088U0822

3 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

4 Dew point sensor CF-DS

088U0251

5 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112

6 Thermal actuator TWA-A 230V NC suitable for RA-C DN20

088H3112 (x4)

7 Wall switch for manual changeover to cooling

External supplier

AB432956914381en-010101

Service Manual Danfoss Icon2TM
Notes

Drawings

AB432956914381en-010101

© Copyright Danfoss Climate Solutions | 2023.01 | 83

AB432956914381en-EN0101

© Copyright Danfoss Climate Solutions | 2023.01

References

• Danfoss Icon | Danfoss

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