Danfoss DHP-AT, Installation And Service Instructions Manual

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Contents
1 About documents and decals ..................................................... 3
1.1 Introduction .................................................................................... 3
1.2 Symbols in documents ................................................................ 3
1.3 Symbols on decals ........................................................................ 3
1.4 Terminology .................................................................................... 4
2 Important information ................................................................... 5
2.1 General safety precautions ........................................................ 5
2.2 Refrigerant ....................................................................................... 5
2.3 Electrical connection .................................................................... 6
2.4 Water quality ................................................................................... 6
2.5 Commissioning .............................................................................. 7
3 Transport, delivery check and positioning ............................. 8
3.1 Transporting heat pump ............................................................ 8
3.2 Delivery check ................................................................................ 8
3.3 Positioning the heat pump ........................................................ 8
4 The heat pump ............................................................................... 10
4.1 Dimensions and connections ................................................. 10
4.2 Components ................................................................................. 11
4.3 Principle function description ................................................ 12
4.4 Check and safety functions ..................................................... 15
4.5 Heating curves ............................................................................. 15
5 System solution .............................................................................. 17
5.1 System solution ........................................................................... 17
6 Piping installation ......................................................................... 18
6.1 Pipe connection .......................................................................... 18
6.2 Connecting cold and hot water lines .................................. 18
6.3 Connecting supply and return lines ..................................... 19
6.4 Noise and vibrations .................................................................. 19
7 Electrical installation .................................................................... 21
7.1 Connecting the operator panel ............................................. 21
7.2 Connecting circulation pump ................................................ 22
7.3 Connecting hot water tank electrical heater .................... 23
7.4 Connecting external electrical heater ................................. 24
7.5 Connecting hot water sensor ................................................. 24
7.6 Connecting buffer tank sensor .............................................. 24
7.7 Connecting reversing valve hot water ................................ 25
7.8 Connecting the power supply ............................................... 26
8 Operator panel ............................................................................... 27
8.1 Important parameters ............................................................... 27
9 Commissioning .............................................................................. 28
9.1 Checking piping installation and heating system .......... 28
9.2 Checking electrical installation .............................................. 28
9.3 Filling hot water tank and heating system and
expelling excessive air ............................................................... 28
9.4 Starting the unit .......................................................................... 28
9.5 Test Operation ............................................................................. 29
9.6 After start-up and tests ............................................................. 29
9.7 Customer information ............................................................... 30
10 Troubleshooting ............................................................................ 31
10.1 Operational problems ............................................................... 31
11 Technical data ................................................................................. 33
12 Connection diagram .................................................................... 34
13 Wiring diagram .............................................................................. 35
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