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Mission BACnet
Vorschriften/Normen/
Richtlinien zur Gebäu-
deautomation.
Regulations/standards/
guidelines for building © Michael Krödel
automation.
Vorlauf- und Rücklaufkreisen sowie pean-level Energy Performance of Buildings Newly constructed non-residential buildings
Anbindung an eine externe Steuerung Directive (EPBD). must be equipped with a BA system of
möglich. automation level B or better from the
Die Wärme- bzw. Kälteerzeugung muss auf The latest EPBD, issued on May 30, 2018, beginning of 2024. In detail, there is room
Basis einer „Raumtemperaturaufschaltung“ introduces substantial requirements for the for interpretation as to whether this applies
erfolgen: Dies bedeutet, dass die konkrete digitalization of the building sector, including to all non-residential buildings or only to
Heiz- bzw. Kühllast aus den Räumen an den the installation of self-regulating devices and those with a heating/air conditioning system
Erzeuger gemeldet werden muss, damit ongoing monitoring. An update to the EPBD, with a rated output > 290 kW. According to
sich dieser entsprechend anpassen kann. expected in 2024, will further tighten and spec- initial legal clarifications, the former is the
ify these requirements. case, as the requirement is in a new
Fazit paragraph, which in turn contains no
EN 15232 enables the assessment of energy- restriction with regard to the nominal output
Nachdem die gesetzlichen Mindestanforderun- saving potential through building automation, of the heating/air conditioning system!
gen bisher immer nur den Dämmzustand von offering a detailed checklist to evaluate vari- Non-residential buildings in existing
Gebäuden oder die Anlagentechnik betrafen, ous functions such as heating, cooling, ventila- buildings with a heating or air conditioning
hat der Gesetzgeber erkannt, dass ein weite- tion, lighting, shading, and management. Tran- system with a rated output of 290 kW or
res Energiereduktionspotenzial in der Gebäu- sitioning to global applicability as ISO 52120, more must be equipped with energy
deautomation liegt und zunächst im Nicht- EN 15232 remains synonymous with minimal monitoring technology that makes data
wohngebäude einen Mindest-Automationsgrad changes. available to the outside via a common and
eingeführt. Die Anforderungen im Detail sind freely configurable interface by the end of
überschaubar und sollten bereits in der Pla- DIN V 18599 outlines the fundamental pro- 2024. A “building automation and control
nung berücksichtigt werden. Wenn das nicht cedure for calculating building energy system” must also be introduced. It is
erfolgt, besteht das Risiko, dass ein Auftragge- demand, essential for the energy performance currently being discussed in detail whether
ber eine kostenlose Nacherfüllung einfordert. certificate. Part 11 aligns with the EN 15232 this requires “automation level B” or
checklist, albeit less extensively, categorizing whether the BA functionality must be
“BA efficiency classes” A to D as “automation proven in some other way. However,
levels.” “automation level B” only comprises four
For a comprehensive understanding of the requirements (see later) and, for reasons of
GEG, it is essential to examine the cross-refer- GEG 2024 Building Automation planning security, it may be advisable to
ences indicated in the figure above. Requirements use these as a guide.
I
n the buildings concerned, it must also be
Understanding the GEG Background The legal text of the GEG 2024 lists several ensured that communication between all
requirements for building automation (BA). building technology systems and applications
The GEG regulates statutory requirements for The most important of these is a new section is possible, even with different proprietary
energy efficiency in buildings within Germany, “§ 71a Building automation”. Its requirements technologies and devices. This requires the
serving as the national adoption of the Euro- are essentially as follows: use of standardized protocols like BACnet.
26 BACnet Europe Journal 40 03/24
