BS EN 12828:2012+A1:2014
$215.11
Heating systems in buildings. Design for water-based heating systems
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 76 |
This European Standard specifies design criteria for water based heating systems in buildings with a maximum operating temperature of up to 105 °C. In case of heating systems with maximum operating temperatures over 105 °C other safety aspects than those described in 4.6 may apply. The other clauses of this European Standard are still valid for those systems.
This European Standard does not amend product standards or product installation requirements. This standard covers the design of:
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heat supply systems;
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heat distribution systems;
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heat emission systems;
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control systems.
This European Standard takes into account heating requirements of attached systems (e.g. domestic hot water, process heat, air conditioning, ventilation) in the design of a heat supply, but does not cover the design of these systems.
This European Standard does not cover requirements for installation or commissioning or instructions for operation, maintenance and use of water based heating systems.
This European Standard does not cover the design of fuel and energy supply systems.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | Introduction |
| 8 | 1 Scope 2 Normative references |
| 9 | 3 Terms, definitions and symbols 3.1 Terms and definitions |
| 12 | 3.2 Symbols Table 1 — Symbols used in the standard |
| 14 | Table 2 — Indices used in the standard |
| 15 | 4 System design requirements 4.1 Requirements for preliminary design information |
| 16 | 4.2 Heat supply 4.2.1 General 4.2.2 Sizing |
| 17 | 4.3 Heat distribution 4.3.1 General 4.3.2 Design criteria 4.3.2.1 Water requirements |
| 18 | 4.3.2.2 Water flow rate 4.3.2.3 Circulation pumps 4.3.2.4 Pipework |
| 19 | 4.4 Heat emission 4.4.1 General 4.4.2 Sizing |
| 20 | 4.4.3 Positioning 4.4.4 Thermal environment 4.4.5 Surface temperatures 4.5 Controls 4.5.1 General |
| 21 | 4.5.2 Classification 4.5.3 Central control 4.5.3.1 General 4.5.3.2 Heat flow to the distribution system 4.5.3.3 Heat flow rate to attached systems |
| 22 | 4.5.4 Zone control 4.5.5 Local control 4.5.6 Timing control |
| 23 | 4.6 Safety arrangements 4.6.1 General 4.6.2 Equipment required for sealed systems 4.6.2.1 Protection against exceeding the maximum system safety temperature |
| 24 | Figure 1 — Typical system temperature development in a fault condition 4.6.2.2 Protection against exceeding the maximum operating pressure 4.6.2.2.1 Safety valves, rating and arrangements |
| 25 | 4.6.2.2.2 Pressure limiter 4.6.2.3 Safeguard against lack of water 4.6.2.4 Pressurisation systems |
| 26 | 4.6.3 Equipment required for open vented systems 4.6.3.1 Expansion cisterns |
| 27 | Figure 2 — Installation examples of expansion cisterns 4.6.3.2 Safety pipes and feed and expansion pipes 4.7 Operational requirements 4.7.1 General |
| 28 | 4.7.2 Provision for monitoring operating conditions 4.7.3 Temperature controller 4.7.4 Pressure maintaining control device 4.7.5 Water level adjustment 4.8 Thermal insulation 4.8.1 General |
| 29 | 4.8.2 Undesirable heat losses Table 3 — Examples of thermal transmittance classes |
| 30 | 4.8.3 Harmful effects of too high temperatures 4.8.4 Frost protection 5 Instructions for operation, maintenance and use 6 Installation and commissioning |
| 31 | Annex A (informative) Control system classification A.1 Control system classification A.1.1 General A.1.2 Heating control system modes A.1.3 Control system performance modes A.1.4 Control system classification table |
| 32 | Table A.1 — Control system classification table A.2 Examples of control system classification A.2.1 Local manual control Figure A.1 — Indoor temperature control system with local manual mode in an individual house Table A.2 — Control system classification |
| 33 | A.2.2 Local manual control and central automatic control Figure A.2 — Indoor temperature control system with local manual mode and central automatic mode in an individual house Table A.3 — Control system classification A.2.3 Local automatic control and central automatic control |
| 34 | Figure A.3 — Indoor temperature control system with an outdoor sensor, local automatic mode and central automatic mode in a multi-story residential building Table A.4 — Control system classification |
| 35 | A.2.4 Local automatic control and automatic zone control Figure A.4 — Indoor temperature control system with local automatic mode and automatic zone control mode in a two-storey commercial building Table A.5 — Control system classification A.2.5 Local automatic control and central automatic control with optimisation |
| 36 | Figure A.5 — Indoor temperature control system with an outdoor sensor, local automatic mode and central automatic mode with optimisation program in a multi-storey office building Table A.6 — Control system classification |
| 37 | Annex B (informative) Thermal Environment |
| 39 | Annex C (informative) Thermal insulation Table C.1 — Insulation classes |
| 40 | Table C.2 — Insulation thickness in mm and thermal transmission coefficient for insulation classes 1 to 6 |
| 42 | Annex D (informative) Guidance for dimensioning diaphragm expansion vessels and pressurisation systems (sealed systems) D.1 General |
| 43 | Figure D.1 — Pressure levels D.2 Expansion vessel size calculation |
| 46 | Annex E (informative) Safety valves for heating systems E.1 Classification E.2 General requirements E.2.1 General E.2.2 Materials E.2.3 Protection against maladjustments E.2.4 Guidance of the moveable parts E.2.5 Easing gear |
| 47 | E.2.6 Protection of sliding and rotating elements E.2.7 Design of coil compression springs E.2.8 Transport protections E.2.9 Pipes, installation and body E.2.10 Marking E.2.10.1 Marking on the body |
| 48 | E.2.10.2 Marking of the safety valve |
| 49 | E.3 Calculation of the relief capacity E.4 Requirements for safety valves marked H E.4.1 General E.4.2 Body and spring cap design |
| 50 | E.4.3 Threads on the inlet and outlet E.4.4 Connections E.4.5 Calculation Table E.1 — Heating capacities E.4.6 Setting E.5 Requirements for safety valves marked D/G/H E.5.1 General |
| 51 | E.5.2 Body and spring cap design E.5.3 Design of the valve disc E.5.4 Protection of sliding and rotating elements as well as springs E.5.5 Safety valve with back pressure compensation E.5.6 Setting |
| 52 | Table E.2 — Nominal sizes of safety valves marked H and dimensions of pipes, expansion traps, discharge pipes in water-based heating systems with relief pressures of 2,5 bar and 3 bar |
| 53 | Figure E.1 — Visual examples to Table E.2 Table E.3 — Dimensions of feed pipes, expansion traps, discharge pipes in water-based heating systems for all pressures and safety valves marked D/G/H |
| 54 | Figure E.2 — Visual examples to Table E.3 |
| 55 | Annex F (informative) A–deviations |
| 56 | Bibliography |
