2 | © Danfoss | 2020.02
AQ167786463757en-000402
District Heating Substations
1.0 General information ..........................................................................................................................................................................................................................3
1.1 Information on installation and operating instruction manual ....................................................................................................................................3
1.2 Other applicable documents .................................................................................................................................................................................................... 3
1.3 Explanation of symbols ............................................................................................................................................................................................................... 3
1.4 Liability and warranty ................................................................................................................................................................................................................... 3
1.5 Copyright ..........................................................................................................................................................................................................................................4
1.6 Spare parts .......................................................................................................................................................................................................................................4
1.7 Dismantling ...................................................................................................................................................................................................................................... 4
1.8 Disposal ............................................................................................................................................................................................................................................4
2.0 Safety ................................................................................................................................................................................................................................................5
2.1 General information ..................................................................................................................................................................................................................... 5
2.2 Responsibility of the operator ................................................................................................................................................................................................5
2.3 Intended use ...................................................................................................................................................................................................................................5
2.4 Possible misuse ..............................................................................................................................................................................................................................5
2.5 Safety work ......................................................................................................................................................................................................................................5
2.6 Personal protective equipment ...............................................................................................................................................................................................6
2.7 Possible hazards of the device ................................................................................................................................................................................................. 6
2.8 Emergency stop switch ..............................................................................................................................................................................................................7
2.9 Operating personnel ...................................................................................................................................................................................................................7
2.10 Actions in the event of danger or accidents .......................................................................................................................................................................7
2.11 Residual hazards / hazard analysis ........................................................................................................................................................................................8
3.0 Technical data ......................................................................................................................................................................................................................................9
3.1 Technical and main system data .............................................................................................................................................................................................. 9
3.1.1 CE label ................................................................................................................................................................................................................................... 9
3.1.2 Dimensions and packaging ............................................................................................................................................................................................9
3.2 Symbols used in circuit diagrams ......................................................................................................................................................................................... 10
4.0 Function and configuration ......................................................................................................................................................................................................... 10
4.1 Function ......................................................................................................................................................................................................................................... 10
4.2 DSE FLEX configuration possibilities ................................................................................................................................................................................... 11
5.0 Transport, packaging and storage ............................................................................................................................................................................................. 12
5.1 Transport of pallets by forklift .............................................................................................................................................................................................. 12
5.2 Transport inspection ................................................................................................................................................................................................................. 12
5.3 Packaging ..................................................................................................................................................................................................................................... 13
5.4 Storage ......................................................................................................................................................................................................................................... 13
6.0 Installation .......................................................................................................................................................................................................................................... 13
6.1 Installation preparation ......................................................................................................................................................................................................... 14
6.1.1 Primary connection ........................................................................................................................................................................................................ 14
6.1.2 Secondary connection ................................................................................................................................................................................................... 14
6.1.3 Electrical connection ...................................................................................................................................................................................................... 14
6.2 Draining station ........................................................................................................................................................................................................................ 17
7.0 Commissioning ................................................................................................................................................................................................................................. 18
7.1 Requirements for commissioning ...................................................................................................................................................................................... 18
7.2 Secondary side commissioning .......................................................................................................................................................................................... 18
7.3 Primary-side commissioning ............................................................................................................................................................................................... 18
7.4 Requirements for commissioning ...................................................................................................................................................................................... 19
7.5 Fault and Shutdown ................................................................................................................................................................................................................ 19
7.6 Commissioning after a failure or malfunctioning ........................................................................................................................................................ 19
8.0 Operation .......................................................................................................................................................................................................................................... 19
8.1 Switching on .............................................................................................................................................................................................................................. 19
8.2 Switching off .............................................................................................................................................................................................................................. 19
8.3 Restarting after substation shutdown .............................................................................................................................................................................. 19
8.4 Service / clean - strainer .......................................................................................................................................................................................................... 20
8.5 Service / disassembly and replacement - heat exchanger ......................................................................................................................................... 21
8.6 Service / Check - Safety valve and expansion vessel .................................................................................................................................................... 21
9.0 Maintenance .................................................................................................................................................................................................................................... 22
9.1 Safety warning .......................................................................................................................................................................................................................... 22
9.2 Maintenance plan (recommendations) ............................................................................................................................................................................ 22
9.3 Heat exchanger maintenance ............................................................................................................................................................................................. 23
9.4 Maintenance validation ......................................................................................................................................................................................................... 23
10.0 Troubleshooting ..................................................................................................................................................................................................................... 24
10.1 Safety .......................................................................................................................................................................................................................................... 27
11.0 Spare parts ................................................................................................................................................................................................................................ 27
12.0 Index .................................................................................................................................................................................................................................. 28
Table of contents
