For building management – smart solutions from Gruner

Planning for the future and modern building face a range of new challenges. Whether cost-effectiveness, energy efficiency or safety – smart building and building management technology impose great demands on the field devices that measure, control and regulate, and they demand intelligent solutions, which is what Gruner can provide for you.

Ventilation controlEnergy efficiency with a cost benefit

itaMAX achieves energy savings of up to 70 % compared to conventional mechanical ventilation systems – not only with new builds, but also with retrofits and the renovation of existing buildings. The itaMAX system can be integrated in existing building management systems using standardised interfaces and protocols. Optionally, fans are activated by an analogue system or via Modbus RTU. When using Modbus RTU, up to 240 supply and exhaust air controllers can be connected up to the same line. All that is required is to set the fan parameters – itaMAX takes charge of operation automatically. There is no need to engage in the time-consuming and arduous task of defining parameter settings. Network diagnostics enable parameterisation, remote diagnosis and remote maintenance to be performed via a web interface.

Fan controlControl of supply and exhaust air

itaMAX is the ideal interface for intelligent control of the fan speed. This enables the power of fans to be adapted precisely to suit needs, and the system only provides the air supply that is actually needed.

As a gateway to the field devices, itaMAX simplifies the task of integrating controllers and is easy to incorporate in existing systems. For control purposes, various parameters are recorded, such as the prevailing flap positions of all HVAC boxes for supply and exhaust air. To accomplish this, the demand signal transmitters of the room temperature controller are connected remotely, directly to the HVAC box. The specifically designed itaMAX algorithm then regulates the fans which are controlled by a frequency converter.

A system makes it simpleEnhanced comfort, greater cost-effectiveness

Comprehensive information on integration in building management technology and the operating principle of itaMAX.

PDF for download

Gruner actuatorsFestival hall for celebrations

The recently constructed Festival Hall in Wehingen satisfies ultimate fire protection standards, achieved with the help of actuators from Gruner.

Very robust actuatorsAdapted to suit fire protection flaps

These ultra-robust actuators are intended to facilitate motorised opening and closing operations, to withstand high temperatures and also to be suitable for manual switching. Furthermore, the system should be compact and the actuator should be located directly on the locking system to prevent expensive transmission mechanisms that are prone to cause malfunctions.

Steel componentsExtremely robust actuators

To ensure that these electrical actuators also work reliably in serious situations, all major components are made of steel. This means that the motor torque is maintained over an extended period, even at temperatures of up to 90 °C. LEDs and temperature sensors indicate the precise operating status and simplify troubleshooting and maintenance.

Two seriesBroad range of torques

This range of Gruner actuators provides a broad range of torques. For example, in Europe, two types cover the torque ratings needed for F&S in buildings. Specialist actuators with communication capabilities are used for smoke protection. These combine the intelligence of the actuators with that of the control system.

Reliable functionSystem-compliant connection

Reliable operation in the event of a fire is supplemented by ease of maintenance and testing on this system. Since the fire protection flaps have been equipped with the new Gruner actuators, servicing can be performed conveniently at the touch of a button, instead of needing to be performed by hand in each fire protection area, which was necessary in the past.


PDF for download

Measurement, control and regulation in the smart way

Gruner can provide planners and architects with actuators for building automation and building management that are efficient, that are easy to integrate and that perform their function reliably to state-of-the-art technical standards.

Gruner standard range

Ideal for stairwells

For all requirementsEquipped

The Gruner standard rotary actuators 227 and 363 without spring return as well as 341 and 361 with spring return cover the full range of requirements within a building. These reliable actuators provide the basis for a comprehensive range of field devices. They are used as a standard in classic ventilation construction. In addition, they provide the ideal platform for developing individual variants for specific solutions.

328QS super-fast running actuatorsWith fail-safe

With automatic reset, the 328QS actuator is predestined for use in public buildings, or in buildings with special floor levels and large stairwells that are required to comply with current European safety directives.

Clear benefits for instrumentation & control as well as for building management

Successful OEM manufacturer, capable development partner

As a successful OEM partner, Gruner has developed and manufactured leading-edge technological solutions for HVAC, fire protection, for the control of central and remote ventilation systems and for particularly noise-sensitive environments. This means that we can provide you with a complete range of field devices for building automation, equipped with itaMAX, the ideal interface for integration in existing building management control systems.

Great expertise, in demand internationally

As a manufacturer, we possess the expertise to adapt our solutions to suit your requirements or to connect them to your systems. Our expertise is in demand internationally which is why, at Gruner, you will also find professional mentors for all questions associated with feedback control technology and energy efficiency.

Your direct line to Gruner

Are you looking for field devices that will make your building management system safer and more efficient? If so, you are sure to find what you are looking for in our product range. Are you looking for a bespoke solution or a professional point of contact? Then send us an e-mail.


Bürglestr. 15 - 17
78564 Wehingen

Phone: +49 74 26 / 948-0
Fax: +49 74 26 / 948-200