Airzone and KNX: map commands to group addresses

The Airzone gateway table in Link’nX maps the group addresses of your KNX project to the commands of an Airzone air-conditioning zone: on and off, mode, setpoints, fan speed, timer, air quality, slats and swing. A KNX object then controls the zone directly, without going through a scenario.

Intended for installers and administrators who have the KNX project. To prepare a command in a scenario, use the named choices of the Airzone action form. To read a state, see the Airzone status feedback.

Before you start

• The device is declared in Link’nX. In its list, check IP address, System ID and Zone ID.
• The capabilities of the air-conditioning system are confirmed: the modes, speeds, slats and air-quality functions used must be available on the hardware.
• The installation works in Celsius. For Fahrenheit, an uncertain unit or an unconfirmed compatibility, contact support before activating the relevant rows.

Open the zone’s gateway table

In Airzone, find the device row and click the two opposite horizontal arrows, Gateway mode configuration. Each row of the table concerns the system and the zone of this declaration. The gateway table guide details the fields, the filters and the mobile variant.

Map the KNX commands

1. In Actions, choose the necessary rows using the tables below.
2. Fill in Address, check the DPT displayed and check Active. Use a distinct address for each different Airzone association.
3. Program the KNX objects with the corresponding DPTs and values.
4. Click the floppy disk at the bottom right and wait for Données sauvegardées avec succès ! (Data saved successfully!) before switching tabs.

To deactivate an association without erasing its address, uncheck Active, then save.

Command row	DPT	Values to send
Toggle device on or off	1.001	1 turns on, 0 turns off: this datapoint sets the requested state
Turn on, Turn off	1.001	Each write triggers the named command, even with the value 0; use Toggle device on or off if your object distinguishes on and off by 1 and 0
Set temperature setpoint, Set cooling setpoint, Set heating setpoint	9.001	Temperature in Celsius, with the limits and step of the setpoints guide
Set fan speed	5.010	0 for Auto; 1 to 7 depending on the speeds available on the equipment
Set sleep timer	7.006	0 deactivates the timer; 30, 60 or 90 schedule switch-off after that number of minutes
Set ionization mode	5.010	0 Off, 1 On, 2 Auto, on compatible equipment
Set low air quality threshold	5.010	Whole number from 0 to 99, strictly below the high threshold
Set high air quality threshold	5.010	Whole number from 1 to 100, strictly above the low threshold
Set vertical slats position, Set horizontal slats position	5.010	Position 0, 1, 2 or 3, depending on the equipment’s capabilities
Set horizontal swing, Set vertical swing	1.001	0 stops the swing, 1 activates it

To change both air-quality thresholds, have the order and the values that keep the low threshold below the high threshold at each step confirmed. A KNX association does not provide the current values of these thresholds in the form.

Choose the HVAC mode values

The Set mode row uses DPT 20.105 with the following values. Other values of this datapoint are not covered.

KNX value	Mode
0	Auto
1	Heat
3	Cool
6	Off
8	Auxiliary heat
9	Fan
14	Dehumidification

Check the result

Données sauvegardées avec succès ! confirms that the mappings are saved. Then send each command from the bus, for example with a push button or the ETS group monitor, and watch the actual zone: power, mode, setpoint or slats.

Troubleshooting

• Check the targeted declaration, the Address, the Active checkbox, the DPT and the value sent by the KNX object.
• Turn on and Turn off react to any write, including 0: for an on/off object, map Toggle device on or off.
• A mode, speed or position with no effect may be missing from the hardware: have the installer check it.

For other symptoms, follow the Airzone troubleshooting. If these checks have already been done, contact support@can-nx.com.