Technical data

2 | Project planning manual for heat pumps for heating and domestic hot water preparation | 01.2012 www.dimplex.de
Table of contents
3.3.2 Preparation of boreholes....................................................................................................................................................... 43
3.3.3 Filling ground heat exchangers............................................................................................................................................. 44
3.4 Additional heat source systems for ground heat usage.................................................................................................................. 44
3.5 Heat source water with intermediate heat exchanger..................................................................................................................... 45
3.5.1 Use of water heat source in the event of contamination ....................................................................................................... 45
3.5.2 Expanding the operating temperature range......................................................................................................................... 46
3.6 Heat source absorber systems (indirect use of air or solar energy) ............................................................................................... 47
4 Water-to-water heat pump............................................................................................................................... 48
4.1 Ground water as a heat source ...................................................................................................................................................... 48
4.2 Water quality requirements............................................................................................................................................................. 50
4.3 Tapping the heat source................................................................................................................................................................. 51
4.3.1 Direct use of water of consistently good quality.................................................................................................................... 51
4.3.2 Indirect use of water as a heat source .................................................................................................................................. 51
4.3.3 Heat exchanger for the protection of the heat pump............................................................................................................. 52
5 Noise emissions from heat pumps................................................................................................................. 56
5.1 Sound pressure level and sound power level................................................................................................................................. 56
5.1.1 Emission and immission........................................................................................................................................................ 57
5.1.2 Sound propagation................................................................................................................................................................ 58
5.2 Sound propagation of heat pumps.................................................................................................................................................. 59
6 Domestic hot water preparation with heat pumps........................................................................................ 61
6.1 Heating domestic hot water with the heat pumps for heating purposes ......................................................................................... 61
6.1.1 Requirements placed on the domestic hot water cylinder..................................................................................................... 61
6.1.2 Domestic hot water cylinder for heat pumps for heating purposes ....................................................................................... 61
6.1.3 Attainable domestic hot water cylinder temperatures ........................................................................................................... 64
6.1.4 Design support for combination and domestic hot water cylinders....................................................................................... 64
6.1.5 Country-specific requirements Germany: German Technical and Scientific
Association for Gas and Water (DVGW) - worksheet W 551................................................................................................ 66
6.1.6 Hydraulic connection of domestic hot water cylinders .......................................................................................................... 66
6.2 Air-to-water heat pump module LI 2M for utilisation of waste heat................................................................................................. 67
6.2.1 Intended purpose .................................................................................................................................................................. 67
6.2.2 Integration Diagram............................................................................................................................................................... 68
6.3 Heating domestic hot water with the domestic hot water heat pump.............................................................................................. 68
6.3.1 Functional description of the domestic hot water heat pump with electric controller ............................................................ 69
6.3.2 Installation............................................................................................................................................................................. 70
6.3.3 Ventilation variants................................................................................................................................................................ 71
6.3.4 Domestic hot water heat pumps for indoor air as a heat source........................................................................................... 71
6.4 Domestic ventilation units for domestic hot water preparation ....................................................................................................... 72
6.5 Comparison of the convenience and the costs of different types of domestic hot water heating systems..................................... 72
6.5.1 Decentralized domestic hot water supply (e.g. continuous-flow heaters) ............................................................................. 72
6.5.2 Cylinder with electric immersion heater (off-peak electricity)................................................................................................ 73
6.5.3 Domestic hot water heat pumps............................................................................................................................................ 73
6.5.4 Domestic ventilation unit with domestic hot water preparation ............................................................................................. 73
6.5.5 Summary............................................................................................................................................................................... 73
7 Heat pump manager......................................................................................................................................... 74
7.1 Operation ........................................................................................................................................................................................ 75
7.2 Temperature sensor (heating controller N1)................................................................................................................................... 76
7.2.1 Heat pump manager WPM 2006 plus with integrated display .............................................................................................. 76
7.2.2 Heat pump manager WPM 2007plus/ WPM EconPlus with removable control panel .......................................................... 77
7.2.3 Installing the external sensor ................................................................................................................................................ 77
7.2.4 Installing the return sensor.................................................................................................................................................... 77
7.3 Thermal energy meter WMZ........................................................................................................................................................... 78
7.3.1 Hydraulic and electrical integration of the thermal energy meter.......................................................................................... 78
7.3.2 Settings on the heat pump manager..................................................................................................................................... 79
7.4 Solar controller for heat pump manager WPM Econ SOL .............................................................................................................. 79
7.5 General menu structure .................................................................................................................................................................. 79
7.6 Electrical connection heat pump manager...................................................................................................................................... 82
7.6.1 Connection work WPM 2006 plus/WPM 2007 plus............................................................................................................... 82
7.6.2 Electrical installation of the heat pump WPM EconPlus........................................................................................................ 83