RaZBerry and Z-Wave thermostatic heads

RaZBerry and Z-Wave thermostatic heads

During testing we used the following devices from our offer:

• we used the RaZBerry device as a controller, which connects to the Raspberry Pi mini-computer through GPIO pins

• we used the following thermostatic heads as action devices to control the diameter of the radiator fan:

I. DANFOSS LIVING CONNECT THERMOSTAT

II. EUROTRONIC COMET THERMOSTATIC HEAD

III. STELLAZ THERMOSTATIC HEADS

Setting the Learning mode in the RaZBerry controller:

After logging into the web interface of the RaZBerry controller click the "wheel icon", in the drop-down menu click the Devices option.

Then to be able to add the device click Add new -> Autodetection of a new Z-Wave device -> Start adding. Now it is necessary to push the button for adding on the device you want to add (in the instructions it is described as Inclusion Button/Service button/Program button). Finally, after the successful pairing you can name the added devices and place them into a room. And do not forget to Save your settings.

Pictorial instructions

Danfoss Living Connect Thermostat

First we tested a head from the Danfoss company that offers an elegant design - besides the Z-Wave head they also offer a classic version that looks like the Z-Wave version but it is not possible to control it wirelessly.

Instructions for adding devices (inclusion process)

Before the process of adding devices into the control unit it is necessary to check if the head is in the factory settings; you can find this out if you insert 2 pieces of AA batteries and see if the display shows the following mark (see below). Now you can install the head on the radiator valve.

In the RaZBerry control unit it is necessary to set the so-called Learning mode = mode for adding/removing devices. Set it according to the instructions above. During adding it is necessary to push the button with "a dot". After the successful pairing the display of the thermostatic head shows the degrees of Celsius that indicate the temperature set on the radiator.

Result of the compatibility test:

The DANFOSS LIVING CONNECT THERMOSTAT is fully compatible with the RaZBerry controller.

Note: The Danfoss thermostatic head does not have a temperature sensor to report the ambient temperature.

Eutronic Comet thermostatic head

The next tested thermostatic head was a head from the EUROtronic Technology GmbH company which, besides the display and the wheel for manual temperature control, offers also an integrated sensor to report the ambient temperature. This thermostatic head offers several interesting features such as the detection of open windows or frost protection.

Instructions for adding devices (inclusion process)

During adding and removing devices to/from the Z-Wave network it is important to follow the precise procedure of the manufacturer, namely:

• Uninstall the old thermostatic head, remove it from the valve.
• Remove the cover of the battery by pushing the cover upwards. Insert the batteries. Do not use rechargable batteries! Do not reverse the polarity of the batteries! The display shows PREP. Now the motors is opened completely so that the installation is simpler. When Comet Z-Wave is prepared for the installation the display shows INST. The symbol of the blinking radio antenna means that the device is ready for adding.
• Turn the coupling nut (ring on the product) on the valve. In case the coupling nuts do not fit you need an adapter. Now start the adding mode in your control unit (see the instructions above).
• The countdown begins. Push the button in the box for batteries and hold it down for 5 seconds. The display shows ADAP and the device is initialized. After the initialization the main screen is displayed. INFO: The error code is displayed after a failure.

So we recommend to remove the device first (exlusion): 

• Set the control unit into the mode for the removal of devices.
• Push the button in the box for batteries and hold it down for 5 seconds.
  

Result of the compatibility test:

The EUROTRONIC COMET THERMOSTATIC HEAD is compatible with the RaZBerry controller but the reporting of the ambient temperature does not function.

Stellaz thermostatic head

The last tested thermostatic head from our offer was the head from the EUROtronic Technology GmbH company that has a unique design and does not have a display, it has only a LED indicator. The temperature values are available through the controller interface.

Instructions for adding devices (inclusion process)

During adding and removing devices to/from the Z-Wave network it is important to follow the precise procedure of the manufacturer, namely:

Uninstall the old thermostatic head and install the StellaZ thermostatic head with the necessary adapter. Start the learning mode in RaZBerry and hold down the blue button on the thermostatic head for five seconds.

Result of the compatibility test:

The STELLAZ THERMOSTATIC HEAD is compatible with the RaZBerry controller but the reporting of the ambient temperature does not function because a general template is used for the thermostatic head.

Overview of all thermostatic heads in the RaZBerry interface