Daikin RXQ5PAY1 [2/398] Basic control 2

Si34-804

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.................................................................6

4. Model Selection.......................................................................................8

Part 2 Specifications .................................................................. 11

1. Specifications ........................................................................................12

1.1 Outdoor Units .........................................................................................12

1.2 Indoor Units ............................................................................................33

Part 3 Refrigerant Circuit ........................................................... 55

1. Refrigerant Circuit .................................................................................56

1.1 RXQ5PA.................................................................................................56

1.2 RXQ8PA.................................................................................................58

1.3 RXQ10PA, 12PA ....................................................................................60

1.4 RXQ14PA, 16PA, 18PA .........................................................................62

1.5 Outdoor Air Processing Unit FXMQ125MFV1~250MFV1 ......................64

2. Functional Parts Layout ........................................................................65

2.1 RXQ5PA.................................................................................................65

2.2 RXQ8PA.................................................................................................66

2.3 RXQ10PA...............................................................................................67

2.4 RXQ12PA...............................................................................................68

2.5 RXQ14PA, 16PA, 18PA .........................................................................69

3. Refrigerant Flow for Each Operation Mode...........................................70

Part 4 Function............................................................................ 79

1. Function General...................................................................................80

1.1 Symbol ...................................................................................................80

1.2 Operation Mode......................................................................................81

2. Basic Control.........................................................................................82

2.1 Normal Operation ...................................................................................82

2.2 Compressor PI Control...........................................................................83

2.3 Electronic Expansion Valve PI Control.................................................102

2.4 Step Control of Outdoor Unit Fans .......................................................102

2.5 Outdoor Unit Fan Control in Cooling Operation ...................................103