ESIE98–06A
ii Table of Contents
3
1
4
5
Part 2
Functional Description 2-1
1 Functional Control
1.1 What Is in This Chapter .............................................................................................2-3
1.2 Operation Range .......................................................................................................2-4
1.3 Operation Flowchart...................................................................................................2-6
1.4 Defrost Principle (only for EUWY5-30HB/C(Z)) .........................................................2-7
1.5 Defrost Circuit Control................................................................................................2-9
1.6 Thermostat Control..................................................................................................2-11
1.7 Head Pressure Control for EUWA/Y5-10HB(Z) .......................................................2-12
1.8 Head Pressure Control for EUWA/Y15-30HC(Z).....................................................2-13
1.9 Freeze-up Control....................................................................................................2-14
2 The Controller for the EUWA/Y5-10HB(Z) Chillers
2.1 What Is in This Chapter ...........................................................................................2-15
2.2 The EUWA/Y5-10HB(Z) Controller ..........................................................................2-16
2.3 Start/Stop, Cool/Heat and Temperature Setting......................................................2-18
2.4 What Happens in Case of an Alarm or a Warning...................................................2-20
2.5 Settings: Direct and User Parameters .....................................................................2-21
2.6 How to Read or Adjust Parameter Settings: the Programming Procedure..............2-23
3 The Controller for the EUWA/Y15-30HC(Z) Chillers
3.1 What Is in This Chapter ...........................................................................................2-25
3.2 The EUWA/Y15-30HC(Z) Controller........................................................................2-26
3.3 Start/Stop, Cool/Heat and Temperature Setting......................................................2-27
3.4 What Happens in Case of an Alarm.........................................................................2-28
3.5 Menu Overview........................................................................................................2-29
3.6 How to Read or Adjust Parameter Settings: the Programming Procedure..............2-30
3.7 a Read-out Menu...................................................................................................2-31
3.8 z Set Points Menu.................................................................................................2-32
3.9 e User Settings Menu............................................................................................2-33
3.10 r Software Timers Menu.....................................................................................2-36
3.11 t History Menu....................................................................................................2-37
3.12 y Info Menu .........................................................................................................2-38
3.13 u Input /Output Menu...........................................................................................2-39
3.14 q Password Menu................................................................................................2-41
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