Smart Mode for the Klima radiators

Control your Radialight Klima radiators with external devices, whether local or remote, with simplicity and flexibility.

With full support for your smart home, you can manage heating exactly how you want, combining comfort, efficiency and smart-technology in one system.

By combining remote and local control, the Klima radiators offer maximum flexibility. This solution can meet all needs: from simple residential homes to efficient control in hospitality structures like B&Bs and hotels.

The radiators communicate with control devices via a wire, guaranteeing stable and reliable operation. This physical connection simplifies integration into different automation systems and assures precise management in every context.

The radiator uses a pilot-wire: a special cable that receives the signal from external control devices. When the pilot wire is powered, the radiator enters Comfort mode, maintaining the desired temperature. If no signal is received, the radiator goes automatically into Frost-Protection mode, protecting the environment without wasting energy. This simple and intuitive system makes it easy to control heating according to your needs, without complications.

The operating modes are selected using the “M” button. Press it repeatedly until the “FP” icon appears in the lower right corner of the display.

The default temperature, used in Smart mode and restored after a prolonged power outage, is the one set for Comfort mode.

You can adjust it by selecting Comfort mode with “M” and then using “+” and “–” buttons to pick the desired value before activating Smart mode.

If the pilot-wire signal is absent, the radiator switches to Frost-Protection mode with a fixed, non-adjustable temperature of 7.0 °C.

To install the Radialight radiator in Smart mode you will need:

• One or more external control devices;
• A physical wiring connection between devices — wireless setups will not work.

You must supply the radiator with two wires for the 230 V AC mains power and a third wire — the pilot-wire — coming from the external control devices.

The pilot-wire is inside the power cable and is not visible when the cable has a plug.

To access the pilot-wire and proceed with any necessary connections, remove the plug and strip the final section of the cable.

The wiring must allow the external control system to apply a “live” signal (active phase of the mains) to the pilot-wire depending on its state.

It is possible to connect an unlimited number of devices. They will be connected in parallel, and activating just one of them will set the radiator to Comfort mode.

However, all devices must be turned off to restore the Frost-Protection mode, which corresponds to the absence of a signal applied to the pilot wire.

Simple: get a smart relay compatible with your home automation system and use it to control the line signal applied to the pilot wire.

The radiator can be configured in three different ways: with full temperature adjustment freedom, with temperature variation limited to ±4 °C, or with control via an external thermostat.
To manage these options, the Smart Mode is divided into three variants — SM0, SM1, and SM2 — each designed to meet different comfort and control needs.

Use:

• SM0 to allow maximum adjustment freedom;

• SM1 to limit the adjustment range to ±4 °C relative to the set Comfort temperature;

• SM2 for control via an external thermostat.

To prevent accidental or unauthorised modifications — especially useful in public or rental installations — we recommend locking the radiator’s control panel after selecting the Smart Mode variant that best suits your needs.