Daikin REYQ72, Serveice Manual

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SiUS39-602
Table of Contents i
R-410A Heat Recovery
60Hz
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 ........................................................................................... 3
3. Model Selection ......................................................................................4
Part 2 Specifications .................................................................... 5
1. Specifications ..........................................................................................6
1.1 Outdoor Units ........................................................................................... 6
1.2 Indoor Units............................................................................................ 11
1.3 BS Units ................................................................................................. 23
Part 3 Refrigerant Circuit ........................................................... 25
1. Refrigerant Circuit .................................................................................26
1.1 REYQ72M, 96M ..................................................................................... 26
1.2 BSVQ36, 60M ........................................................................................ 28
2. Functional Parts Layout ........................................................................29
2.1 REYQ72M, 96M ..................................................................................... 29
3. Refrigerant Flow for Each Operation Mode ..........................................31
Part 4 Function ........................................................................... 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 .................................................. 45
2.4 Cooling Operation Fan Control .............................................................. 46
2.5 Heat Exchange Mode in Heating Operation or Simultaneous
Cooling / Heating Operation................................................................... 47
3. Special Control......................................................................................48
3.1 Startup Control ....................................................................................... 48