DONEXON varmo TZ pro - Thermostat Installation Guide

Introduction

The varmo TZ pro is an electronic radiator thermostat, intended for use with water based room radiators. The varmo TZ pro valve is supplied with adapters for RA valves and valves with M30 x 1.5 (K) connections, two alkaline AA batteries and a 2 mm Allen key.

Inserting the batteries

Remove the battery cover and insert two AA batteries. Make sure the batteries are correctly oriented.
Rechargeable batteries must not be used.
If the battery goes flat, the system switches automatically to safety mode where the valve is slightly opened providing a small continuous water flow.

Installing the varmo TZ pro

M must be flashing on the display prior to installing.

Start by mounting the appropriate adapter.
Tighten RA adapter using the Allen key, hand-tighten the K adapter (max. 5 Nm).
Screw the varmo TZ pro valve onto the adapter and tighten by hand (max. 5 Nm).
Press for approx. 3 seconds to fix the varmo TZ pro smart radiator valve and leave mounting mode.

Including the device onto a Z-Wave controller

• Ensure the varmo TZ pro is factory reset.
• Follow the wizard on the app for adding a device to the system.
• When instructed to, by the app, quickly press and release the on the varmo TZ pro.
• Observe the app for the status of the process.

Display and buttons

Use to navigate the display and the menus and to set the temperature, and use to select and confirm.

Temperature control and adjustment

The temperature is usually controlled via the DONEXON App, but may be changed at any time using the varmo TZ pro buttons. If this is done, the varmo TZ pro sends a message to the Z-Wave controller which then syncronises other varmo TZ pro in the same room.

Press to change the temperature.
The DONEXON App can instruct the varmo TZ pro to enter Fully Closed (FC) or Fully Open (FO) modes. When in either of these modes, the buttons can not be used to leave the mode nor change the temperature.

Re-installation mode

If the varmo TZ pro has been removed from the radiator and needs to be reinstalled (after being used), it is necessary to activate installation mode to prevent damage to the varmo TZ pro.

To enter installation mode:

• Press until is displayed.
• Press again to withdraw the spindle. flashes.
• Reinstall the varmo TZ pro on the valve.
• Press for approx. 3 seconds to fix the varmo TZ pro.

If the varmo TZ pro is moved to another room, make sure to make the necessary changes in the DONEXON App.

Technical information

• If the varmo TZ pro does not get correct and timely replies (e.g. if the Z-Wave controller is turned off) it will automatically switch to 30 minutes wake up intervals and display an E5 error on the screen. If at next wake up the Z-Wave controller replies as expected, the varmo TZ pro will switch back to the original wake up interval.
• The varmo TZ pro will not commence its periodic communications if it is in "Mounting mode". "Mounting mode" is for physical installation. Please see section "Installing the varmo TZ pro" for instructions on how to leave "Mounting mode".

Technical specifications

Including the device to a network

• Ensure the varmo TZ pro is factory reset.
• Activate "Inclusion" on the Z-Wave controller.
• Quickly press and release on the varmo TZ pro.
• Observe both controller and varmo TZ pro for status of the process.

Testing the connection

Press for at least 3 seconds until M is displayed.

Press until is displayed.

Press to test the connection.

disappears when the connection is made.

If no connection can be made, the alarm symbol and the antenna symbol flashes.

Excluding the device from the network

• Activate "Exclusion" on the Z-Wave controller.
• Quickly press and release on the varmo TZ pro.
• Observe both controller and the varmo TZ pro for status of the process.

Factory reset

Remove the battery cover and take out one battery. Press and hold for approx. 5 seconds, while reinserting the battery. The varmo TZ pro is now factory reset and in mounting mode.

Wake up

A controller can only communicate with the varmo TZ pro, when the device is awake. The intervals when the varmo TZ pro is awake can be set using the "wake up command class". Press to manually wake up the device. It will stay awake for 10 seconds and send out a node info.

Implemented Z-Wave device classes

Z-wave info

Supported and controlled Z-Wave command classes

Troubleshooting

Safety precautions

Tested for safety and EMC requirements as specified in EN 60730-1, EN 60730-2-9, EN 60730-2-14, EN 300 220-2, EN 301 489-, EN 301 489-3 and RED directive.
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The thermostat is not intended for children and must not be used as a toy. Do not leave packaging materials where children may be tempted to play with them, as this is extremely dangerous. Do not attempt to dismantle the varmo TZ pro smart radiator valve as it contains no userserviceable parts. If error code E1, E2, E3 or E4 is shown in the display or other defects appear, please return the varmo TZ pro valve to VARIA3 GmbH.