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inspection). The inspection reports must be available by 1 January 2009 at the latest, and be registered in the “Gebäude- und Wohnungsregister” (GWR = Central Austrian register of residential and non-residential buildings); some Bundesländer have an additional provincial register which communicates with the GWR.

The final new draft on the nature and scope of the inspection resulting from the new “Vereinbarung über Heizanlagen according to 15a BV-G” (agreement between the federal Länder and the Republic of Austria on heating systems according to article 15a of the constitutional law) is currently being further processed in the FNA 058-11 of the Austrian Standardization Institute.

Inspection of air-conditioning systems

As cooling devices have so far not been regularly inspected, it was necessary to develop requirements as well as a calculation methodology. Since there were no independent experts in this field, the additional three year period (until january 2009) will be used by the federal Länder.

Cooling systems from 12kW rated output (refrigerating capacity) as well as all air-conditioning systems for the technical conditioning of buildings are to be inspected (the power of several installations within a building has to be summarised). Three inspection intervals (annually, every 3 years, every 12 years) are to be carried out. The inspection is to be carried out according to the engineering rules. The levels of the three inspection modes are very different starting with a rough estimation of the efficiency of the installed system and a visual check for the annual inspection, up to efficiency measurement and calculation and a detailed check for the 12 year inspection.

Since it is important to minimise the costs of undertaking the annual inspections, it only comprises the collection of important information which will help to evaluate the energy use and identify potential energy conservation opportunities consisting of:

• Analysis of the “as built” files, including design calculation and commissioning results

• Analysis of the information made available by the building manager: consumptions, running expenses, failures and maintenance records, occupancy and complaints records.

The 3 year inspection should establish, through an inspection of the system and quick and simple measurements, the overall energy performance and indoor air quality standard. The inspection procedure consists of measurements of the air quality, energy consumption, air flow rates, etc., with accompanying photographs and descriptions. Other inspection elements required (for example in the context of the F-Gas regulation) will also be considered. The procedure also indicates the time taken for every step of the inspection as a basis for the „time cost: energy benefit” analysis.

Finally, the 12 year inspection is an audit involving the detailed inspection of an A/C system which the inspection has indicated has an unacceptable performance in one or more areas. This may involve more specialised checks that will usually be outside the competencies of an inspector. The main aim is to identify where the problems are within the system so that the system owner can commission a specialist to rectify the problems.

Within the building, the cooling systems are summarized and the overall refrigerating capacity is subject to the mandatory inspections. The annual inspection can be made by service personal while the 3 year and 12 years

EPBD Buildings Platform > P124_Austria_June 2008

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