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EWAQ016BAWN
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Daikin EWAQ016BAWN [3/223] Function general 8

Daikin EWAQ016BAWP [3/223] Function general 8

ESIE11-05

i Table of Contents

Table of Contents

1. Introduction .............................................................................................v

1.1 Safety Cautions ........................................................................................v

Part 1 - General Outline.................................................................. 1

1. Specifications ..........................................................................................2

1.1 Option Specifications................................................................................2

1.2 Technical Specifications...........................................................................2

1.3 Electrical Specifications............................................................................2

1.4 Nomenclature ...........................................................................................2

1.5 Operation Range ......................................................................................2

2. Refrigerant Circuit ...................................................................................3

2.1 Refrigerant Circuit ....................................................................................3

2.2 Functional Parts Layout Outdoor Unit ......................................................9

2.3 Refrigerant Flow for Each Operation Mode............................................12

3. Water Circuit .........................................................................................18

3.1 EWA/YQ016BA, 021BA, 025BA, 032BA................................................18

3.2 EWA/YQ040BA, 050BA, 064BA.............................................................20

4. Wiring Diagram .....................................................................................22

4.1 Hydrobox Wiring.....................................................................................22

4.2 Wiring Diagram - Three Phase...............................................................25

4.3 Wiring Outdoor .......................................................................................27

4.4 Field Wiring ............................................................................................36

Part 2 - Functional Description .................................................... 37

1. Function General...................................................................................38

1.1 Symbol ...................................................................................................38

1.2 Operation Mode......................................................................................39

2. Basic Control.........................................................................................40

2.1 Normal Operation ...................................................................................40

2.2 Compressor PI Control...........................................................................41

2.3 Electronic Expansion Valve PI Control...................................................42

2.4 Step Control of Outdoor Unit Fans .........................................................43

2.5 Outdoor Unit Fan Control in Cooling Operation .....................................44

3. Special Control......................................................................................45

3.1 Startup Control .......................................................................................45

3.2 Defrosting Operation ..............................................................................47

3.3 Pump-down Residual Operation ............................................................48

3.4 Standby ..................................................................................................49

3.5 Stopping Operation ................................................................................50

4. Protection Control .................................................................................51

4.1 High Pressure Protection Control...........................................................51

4.2 Low Pressure Protection Control............................................................52

4.3 Discharge Pipe Protection Control .........................................................53

4.4 Inverter Protection Control .....................................................................54

4.5 STD Compressor Overload Protection...................................................55

5. Other Control.........................................................................................56

Daikin EWAQ016BAWN [3/223] Function general 8

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