User Manual

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Thus the relative importance of each of the applications (e.g. Emission Control application) is
established, assigning them a multiplication factor to create an overall summary assessment that is
relevant to the section in question of a typical building.
Weighting of different spaces and equipment of a building in the eu.bac assessment tool
A typical building contains rooms/spaces, several air-handling units (AHU), a central plant. These
may have various pieces of equipment that are controlled through different control functions. In the
eu.bac assessment tool each space, AHU, heating distribution network, heating plant, etc. is
described in one row. To be able to make an accurate classification different weightings are applied
to them. Weighting factors are given as a relative value to compare equipment of different sizes or
spaces with different operating schedules. For technical building management (TBM), the area
covered by the respective BACS is used in the calculation.
Different building types and related importance of BACS functionality
Moreover, the tool is capable to weigh up the applications differently for different types of buildings.
The selection of building type is used to assign importance factors for all the different applications in
the different sections. The weighting factors were modelled and tested in collaboration with the
Technical University of Dresden.
The eu.bac method considers the following types of buildings:
· Office
· Education
· Hospital
· Hotel
· Retail
· Restaurant
· Data Centre
· Residential Building
The type of building determines the relative importance of BACS functionality for the following
applications:
· Heating control;
· Domestic hot water control;
· Cooling control;
· Ventilation and air-conditioning control;
· Lighting control;
· Shading control;
· Technical building management.
In addition, the eu.bac method evaluates the use of Key Performance Indicators, certain extended
functionality, and/or certified products that contribute to high energy performance.
The methodology could also be used in the simulation of concrete examples, i.e. to demonstrate the
new, improved rating if the recommended installations and optimisations were implemented.
The eu.bac Technical Recommendations document describes the different functionality options for
each application in more detail and advises how to check that functionality during the audit.
5.3.3. eu.bac label and classification system
eu.bac established the AA/A/B/C/D/E classification scheme for all eu.bac related product
certifications as well as the eu.bac System certification with the AA rating being the best.
The eu.bac System Label assures the BACS has been assessed according to EN15232 and
highlights the potential to control the building systems in the most energy-efficient way.