Fully automated heating & energy optimization
Objekt
- Manufacturing plant
- Altlengbach near Vienna
- Completion in 2024
- 8 buildings/halls
Hardware
- 39x HM eTRV actuators
- 35x HM WTH, BWTH thermostats
- 1x HM DRSI4 switching contact
- 1x Allnet ALL3500 control center
Symcon-Produkte
- Symcon (VMware Server)
- WebFront
- IPSView
- Homematic Exteded Module
What was it about?
The aim of this project is to reduce gas consumption and modernize the building technology while maintaining room comfort. The previous manual control system will be replaced by a central, fully automatic heating logic that reacts flexibly to working days, public holidays and shutdowns. In addition, energy efficiency is increased by integrating air conditioning units that use surplus PV electricity for pre-heating. This enables a switch from decentralized interventions to an efficient, centrally monitored overall system.
Which systems were used?
The technical basis of the building automation system is a comprehensive wireless network, which is implemented using five Homematic CCU3 units and two access points and ensures communication throughout the building. Wall thermostats (WTH, BWTH) are used for precise temperature control at room level, which correspond directly with the electronic eTRV actuators on the radiators. In the larger hall areas, DRSI4 switching actuators are used to control the fan heaters and outdoor units.
Heat generation is directly linked to the consumers: the central gas boiler and pumps are controlled via an Allnet ALL3500 gateway, while the gas boiler in the separate department is integrated via its own HmIP-FSM switching actuator. Both heat sources are only activated when the thermostats report an actual demand. For energy optimization, 15 air conditioning inverters were also integrated on the hardware side via Tasmota IR bridges, which enables electrical preheating via PV power. In addition, door contacts monitor the roller shutters and immediately interrupt the operation of the affected fan heaters when they are opened in order to minimize energy losses.
How was Symcon used?
Symcon acts as the central "brain" of the building automation system on a VMware server and links the various hardware systems (Homematic, Allnet, Tasmota) as higher-level middleware. Using a room monitoring script that runs every five minutes, it continuously evaluates the heat demand and then controls the gas boilers and air conditioning units fully automatically so that energy is only consumed when it is actually needed. Symcon also serves as the basis for visualization (IPSView, WebFront) and implements complex logics, such as PV-optimized pre-heating via air conditioning systems or safety shutdown when roller shutters are open.
Conclusion
The energy modernization led to a significant reduction in gas consumption by 50% without compromising the comfort of the employees. Thanks to the now 100% automated operation of heating, pumps and air conditioning systems - including PV-optimized pre-heating - the building technology works highly efficiently and independently. The central visualization via IPSView creates maximum transparency by bundling all relevant parameters such as temperatures, setpoints and faults. This results in a lasting reduction in the workload of the building services, whose area of responsibility has shifted from manual interventions to purely monitoring the system.
| Project Link | To Project |
| Integrator | Set-Up IT-Technik |
| Location | 3053 Laaben |
| office@edv-setup.at | |
| Phone | +43 676 392 59 45 |
| More Infos | To Integrator Page |