EU-521 Panel N

Surface-Mounted 5’’ Control Panel for Heat Pump

The ST-521 control panel is a 5-inch touch screen designed for convenient management of heat pump operation. Its elegant, surface-mounted design makes it a perfect fit for modern home interiors.

Serving as an intuitive control center for the heat pump system, it combines functionality with refined aesthetics. The panel allows easy control of all key parameters, displaying data in a clear and accessible manner. A TFT display, responsive touch interface, and logically structured menu make everyday operation fast, simple, and user-friendly.

Surface-Mounted Control Panel Version

The surface-mounted version of the control panel is designed for quick and easy installation without the need to modify the wall structure. Equipped with a modern 5’’ TFT touch display, it allows intuitive control of the entire heating system.

The user interface has been designed to be clear and highly functional. In standby mode, the main screen displays both the current and set temperatures for the boiler and domestic hot water, providing a quick overview of the most important operating parameters.

Additional dedicated views are available for different system zones – including the home heating circuit, return protection valve, boiler control, and the settings screen, where system parameters can be adjusted to individual needs.

With its sleek and modern enclosure design, the surface-mounted version fits perfectly in both technical and living spaces.

Connection and Communication

The panel communicates with the control module via a wired RS connection, ensuring stable and fast data exchange. The connector is located on the back of the device, allowing the cable to be easily routed inside the wall. Installation does not require any additional power supply — both communication and power are provided through a single shared connection.

Installation

The surface-mounted version of the control panel is designed for quick installation without the need to modify the wall structure. The device is mounted directly onto the wall surface using a dedicated bracket or support. This installation method ensures easy service access and does not require any specialized tools or wall recess preparation.

Device Dimensions

The control panel has been designed with compactness and user convenience in mind.
Thanks to its well-balanced proportions, it fits perfectly into both new installations and modernized interiors.

Dimension details:

• Size: 136×92,8x16,6mm
• Mounting hole spacing: 66,58mm
• Mounting type: Surface-mounted

Available Options in the Set

The control module is supplied together with a control panel that enables intuitive management of the system.
Depending on installation preferences, the user can choose one of two versions:

• Surface-mounted panel – ideal for quick installation without interfering with the wall structure.

• Flush-mounted panel – a discreet and elegant solution designed for installation in a standard electrical box.