Osnabrück, January 2009.

Elster Kromschröder is supplementing its controller series with heat pump controller Merlin I/O 5064V4, which is designed as a wall-mounted unit and can be operated in six languages. The controller is designed to control a direct and mixed heating circuit which can be extended by up to 15 mixed heating circuits. Furthermore, the Merlin I/O 5064V4 allows other alternative energies – such as solar systems – to be integrated into the heating system.

The heat pump controller’s illuminated, alphanumeric matrix display guides the user through the settings levels in the language of his choice, the respective selection option being displayed in text form. Therefore, the parameter assignment process for the wide range of functions offered by this controller is designed to be especially user-friendly. The new Merlin is configured via a system selection function that automatically preconfigures all relevant settings.

The Merlin I/O 5064V4 allows up to four heat pumps to be controlled in cascade and their enable/start is made possible using four floating relays. The heat generators can be enabled automatically via the time programs.

In addition, the product has a 0 – 10 V output for feedforwarding the temperature setpoint. It supports both mono and dual mode operation and is equipped with a utility contact to block the heat generators externally.

The standard functions of the new heat pump controller include swimming pool control, return temperature increase via mixer, fixed value control, additional hot-water generation or header pump. The product’s scope of functions is rounded off by the integrated cooling function.

Please submit editorial queries to:
Elster Kromschröder, Comfort Controls, Martin Meyerjohann
  +49 5151 9572-301
martin.meyerjohann(at)elster.com

About Elster GmbH

Elster GmbH, Kromschröder Osnabrück is one of the leading manufacturers of cutting-edge products and system solutions for safeguarding, measuring and controlling gases. With domestic and commercial gas meters, as well as safety valves and control components for heating equipment and for industrial use, the company offers a wide range of services, supported by a global sales and service organisation.

About Elster Group

Elster Group is the world’s leading manufacturer and supplier of high-quality, integrated products for safeguarding, measuring and controlling gas, electricity and water. The group has over 8,500 staff and operations in 38 countries, focused in North and South America, Europe and Asia. Elster’s high-quality products and systems reflect the wealth of knowledge and experience gathered over more than 170 years.