In homes with this heating setup, the water-based underfloor heating is usually controlled by a room thermostat, and the radiators are controlled directly by radiator thermostats.

You can replace the existing thermostat with a Smart Thermostat and all or most of the conventional radiator thermostats with Smart Radiator Thermostats to control those rooms individually.

These heating systems can be controlled with one of the following setups:

1. One Smart Thermostat controls the boiler and Smart Radiator Thermostats are installed in all commonly used rooms

The Smart Thermostat turns on the boiler if there is a call for heat in any room. However, the thermostat can only measure the reference temperature for the room in which it is located.

As no tado° device is connected directly to the underfloor heating valve or pump, the underfloor heating will always heat up when one of the other tado° devices is calling for heat.

In this setup, the room in which the Smart Thermostat is installed can get warmer than the temperature set on the device itself.

The temperature in individual rooms can be controlled by changing the settings on the Smart Radiator Thermostats*.

You’ll need the following tado° devices:

  • 1x Starter Kit - Wired Smart Thermostat (includes Smart Thermostat and Internet Bridge) as well as

  • Add-on - Smart Radiator Thermostats for each room.

2. A Smart Thermostat controls the zone valve or pump of the water-based underfloor heating, the Wireless Receiver controls the boiler and Smart Radiator Thermostats are installed in all commonly used rooms (recommended)

The Smart Thermostat controls the zone valve of the underfloor heating system** based on the room temperature measured in the underfloor heating zone. This allows the room to be controlled independently from all other rooms.

The Wireless Receiver turns the boiler on whenever any of the tado° devices request heat. The temperature in individual rooms can be controlled by changing the settings on the Smart Radiator Thermostats*.

You’ll need the following tado° devices:

  • 1x Starter Kit - Wired Smart Thermostat (includes Smart Thermostat and Internet Bridge) as well as

  • 1x Add-on - Wireless Receiver, and

  • Add-on - Smart Radiator Thermostats for each room.

*Any rooms without Smart Radiator Thermostats will also receive heat when the boiler is turned on. We recommend that you set the existing conventional radiator thermostats to frost protection and only turn them up when the room is in use. Do I need Smart Radiator Thermostats for all my radiators?

**If you do not already have a zone valve in your system, you will need to install a new one in the flow line of the underfloor heating system. The Smart Thermostat can then be wired directly to this valve. The Smart Thermostat works with nearly all zone valves - high voltage, low voltage, normally open and normally closed. In case this setup requires making changes to your existing piping system, we recommend that you seek your local heating engineer’s help. Your installer can refer to our Professional Installer Manuals.

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