Daikin RXQ46MAY1 [2/344] Basic control 6

Si39-501

Table of Contents i

R-410A Cooling Only

50Hz

1. Introduction ............................................................................................ vi

1.1 Safety Cautions ....................................................................................... vi

1.2 PREFACE ................................................................................................x

Part 1 General Information ........................................................... 1

1. Model Names of Indoor/Outdoor Units....................................................2

2. External Appearance...............................................................................3

2.1 Indoor Units ..............................................................................................3

2.2 Outdoor Units ...........................................................................................4

3. Combination of Outdoor Units.................................................................5

4. Model Selection.......................................................................................6

Part 2 Specifications .................................................................... 9

1. Specifications ........................................................................................10

1.1 Outdoor Units .........................................................................................10

1.2 Indoor Units ............................................................................................21

Part 3 Refrigerant Circuit ........................................................... 51

1. Refrigerant Circuit .................................................................................52

1.1 RXQ5MA ...............................................................................................52

1.2 RXQ8MA, 10MA ....................................................................................54

1.3 RXQ12MA .............................................................................................56

1.4 RXQ14MA, 16MA ..................................................................................58

1.5 Outdoor Air Processing Unit FXMQ125MFV1~250MFV1 ......................60

2. Functional Parts Layout ........................................................................61

2.1 RXQ5MA ................................................................................................61

2.2 RXQ8MA, 10MA, 12MA .........................................................................62

2.3 RXQ14MA, 16MA...................................................................................63

3. Refrigerant Flow for Each Operation Mode...........................................64

Part 4 Function............................................................................ 73

1. Function General...................................................................................74

1.1 Symbol ...................................................................................................74

1.2 Operation Mode......................................................................................75

2. Basic Control.........................................................................................76

2.1 Normal Operation ...................................................................................76

2.2 Compressor PI Control...........................................................................77

2.3 Electronic Expansion Valve PI Control...................................................85

2.4 Step Control of Outdoor Unit Fans .........................................................85

2.5 Outdoor Unit Fan Control in Cooling Operation .....................................86