Table of contents
User reference guide
2
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688016-1A – 2022.09
Table of contents
1 About this document 4
1.1 Meaning of warnings and symbols................................................................................................................................. 5
2 User safety instructions 7
2.1 General............................................................................................................................................................................ 7
2.2 Instructions for safe operation ....................................................................................................................................... 8
3 About the system 10
3.1 Components in a typical system layout.......................................................................................................................... 10
4 Quick guide 11
4.1 User permission level...................................................................................................................................................... 11
4.2 Space heating/cooling..................................................................................................................................................... 12
5 Operation 16
5.1 User interface: Overview ................................................................................................................................................ 16
5.2 Menu structure: Overview user settings........................................................................................................................ 18
5.3 Possible screens: Overview............................................................................................................................................. 19
5.3.1 Home screen................................................................................................................................................... 19
5.3.2 Main menu screen.......................................................................................................................................... 21
5.3.3 Setpoint screen............................................................................................................................................... 22
5.3.4 Detailed screen with values ........................................................................................................................... 23
5.4 Turning operation ON or OFF ......................................................................................................................................... 24
5.4.1 Visual indication.............................................................................................................................................. 24
5.4.2 To turn ON or OFF .......................................................................................................................................... 24
5.5 Reading out information................................................................................................................................................. 25
5.6 Space heating/cooling control........................................................................................................................................ 26
5.6.1 About space heating/cooling control............................................................................................................. 26
5.6.2 Setting the space operation mode................................................................................................................. 26
5.6.3 Determining which temperature control you are using................................................................................ 28
5.6.4 To change the desired room temperature .................................................................................................... 28
5.6.5 To change the desired leaving water temperature ....................................................................................... 29
5.7 Preset values and schedules........................................................................................................................................... 30
5.7.1 Using preset values......................................................................................................................................... 30
5.7.2 Using and programming schedules................................................................................................................ 31
5.7.3 Schedule screen: Example.............................................................................................................................. 33
5.7.4 Setting the energy prices................................................................................................................................ 38
5.8 Weather-dependent curve ............................................................................................................................................. 40
5.8.1 What is a weather-dependent curve? ........................................................................................................... 40
5.8.2 2-points curve................................................................................................................................................. 40
5.8.3 Slope-offset curve........................................................................................................................................... 41
5.8.4 Using weather-dependent curves.................................................................................................................. 43
5.9 Other functionalities ....................................................................................................................................................... 44
5.9.1 To configure time and date............................................................................................................................ 44
5.9.2 Using quiet mode ........................................................................................................................................... 44
5.9.3 Using holiday mode........................................................................................................................................ 45
5.9.4 Using WLAN .................................................................................................................................................... 46
6 Energy saving tips 49
7 Maintenance and service 50
7.1 Overview: Maintenance and service .............................................................................................................................. 50
8 Troubleshooting 52
8.1 To display the help text in case of a malfunction........................................................................................................... 52
8.2 To check the malfunction history ................................................................................................................................... 52
8.3 Symptom: You are feeling too cold (hot) in your living room........................................................................................ 53
8.4 Symptom: Unit failure..................................................................................................................................................... 53
8.5 Symptom: The system is making gurgling noises after commissioning......................................................................... 54
9 Relocation 55
9.1 Overview: Relocation...................................................................................................................................................... 55
10 Disposal 56
11 Glossary 57
12 Installer settings: Tables to be filled in by installer 58
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