User Manual

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Table of contents
1 Introduction ................................................................................................................... 3
1.1. Use, targets and benefits ................................................................................................ 3
1.2. What constitutes energy efficiency?................................................................................ 4
2 Global situation: energy and climate .......................................................................... 5
2.1. CO
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-emissions and global climate .................................................................................. 5
2.2. Primary energy consumption in Europe .......................................................................... 6
2.3. Turning the tide – a long-term process ........................................................................... 7
2.4. Reduce energy usage in buildings .................................................................................. 8
2.5. Siemens’ contribution to energy savings....................................................................... 10
3 Building automation and control system standards ............................................... 12
3.1. EU measures ................................................................................................................ 12
3.2. The standard EN 15232 ................................................................................................ 16
3.3. eu.bac Certification ....................................................................................................... 16
3.3.1. eu.bac System Certification .......................................................................................... 17
3.4. Standardization benefits................................................................................................ 17
4 The EN 15232 standard in detail ................................................................................ 18
4.1. List of relevant building automation and control functions ............................................ 23
4.2. BAC efficiency classes .................................................................................................. 76
4.2.1. Procedure for meeting an efficiency class for BACS projects ....................................... 96
4.3. Calculating the impact of BACS and TBM on a building’s energy efficiency ................ 98
4.3.1. Introduction ................................................................................................................... 98
4.3.2. Factor-based calculation procedure of the BACS impact on the energy performance of
buildings (BACS factor method) .................................................................................. 102
4.3.3. Savings potential of various profiles for the different building types ........................... 104
4.4. Overall BACS efficiency factors .................................................................................. 108
4.4.1. Overall BACS efficiency factors for thermal energy .................................................... 109
4.4.2. Overall BACS efficiency factors for electrical energy .................................................. 110
4.4.3. Reflection of the profile on BACS efficiency factors .................................................... 111
4.4.4. Sample calculation for an office building ..................................................................... 112
4.5. Detailed BACS efficiency factors ................................................................................ 113
4.5.1. Detailed BACS efficiency factors for heating and cooling .......................................... 114
4.5.2. Detailed BACS efficiency factor for DHW ................................................................... 115
4.5.3. Detailed BACS efficiency factor for lighting and auxiliary energy .............................. 116
4.6. Guideline for using BACS for EMS ............................................................................. 116
5 eu.bac certification ................................................................................................... 128
5.1. Goal and purpose of eu.bac ........................................................................................ 128
5.2. eu.bac Product certification ......................................................................................... 128
5.2.1. Customer benefits resulting from eu.bac Cert products .............................................. 130
5.3. eu.bac System certification ......................................................................................... 132
5.3.1. System audit and labelling – eu.bac system ............................................................... 132
5.3.2. eu.bac methodology .................................................................................................... 132
5.3.3. eu.bac label and classification system ........................................................................ 133
5.3.4. eu.bac system Key Performance Indicators (KPIs) ..................................................... 134