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Good practice guide to heat pump installation Contents Index of figures and tables 4 1.0 Introduction 7 2.0 Heat pump systems 8 2.1 Types of heat pump systems 8 2.2 Components of a heat pump 10 2.3 How a heat pump works 12 2.4 Fixed-speed and inverter compressors 12 3.0 Heat pump performance 13 3.1 Heat pump efficiency 13 3.2 Energy rating label 14 3.3 Effects of temperature on efficiency 14 3.4 Impacts of defrost cycle on efficiency 15 4.0 Designing a heat pump system 16 4.1 Steps for designing a heat pump system 16 4.2 The importance of correct heat pump sizing 16 4.3 Step 1: Determine requirements 17 4.4 Step 2: Determine design temperature 19 4.5 Step 3: Calculate heat load requirement 20 4.6 Step 4: Select a system to meet requirements 22 4.7 Step 5: Locate the units 23 5.0 Toolkit 26 6.0 Installing pipework 27 6.1 Pipework installation 27 6.2 Pipework pre-installation in new buildings 32 7.0 Heat pump installation 34 7.1 Pre-installation checklist 34 7.2 Installing the indoor unit 35 7.3 Installing the outdoor unit 38 7.4 Connecting piping to indoor and outdoor units 40 7.5 Leak/pressure test 42 7.6 Evacuation of the system 43 8.0 Refrigerants 45 8.1 Refrigerant charging 46 8.2 Labelling as record of service 46 9.0 Electrical requirements 47 9.1 Installing electrical wiring 47 9.2 Outdoor unit connections 47 9.3 Nameplate 48PDF Image | Heat pump installation Good Practice Guide
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