Table Of Contents - Daikin VRV II RXYQ8MY1K Service Manual

Si39-502A
1. Introduction ............................................................................................ vi
Part 1 General Information ........................................................... 1
1. Model Names of Indoor/Outdoor Units....................................................2
2. External Appearance...............................................................................3
3. Combination of Outdoor Units.................................................................5
4. Capacity Range.......................................................................................6
Part 2 Specifications .................................................................... 7
1.
Part 3 Refrigerant Circuit ........................................................... 43
1.
2.
3.
Part 4 Function............................................................................ 51
1. Function General...................................................................................52
2.
3.

Table of Contents

R-410A Heat Pump
1.1 Safety Cautions ....................................................................................... vi
1.2 PREFACE ................................................................................................x
2.1 Indoor Units ..............................................................................................3
2.2 Outdoor Units ...........................................................................................4
Specifications ..........................................................................................8
1.1 Outdoor Units ...........................................................................................8
1.2 Indoor Units ............................................................................................16
Refrigerant Circuit .................................................................................44
1.1 RXYQ8M, 10M .......................................................................................44
Functional Parts Layout ........................................................................46
2.1 RXYQ8M, 10M .......................................................................................46
Refrigerant Flow for Each Operation Mode...........................................47
1.1 Symbol ...................................................................................................52
1.2 Operation Mode......................................................................................53
Basic Control.........................................................................................54
2.1 Normal Operation ...................................................................................54
2.2 Compressor PI Control...........................................................................55
2.3 Electronic Expansion Valve PI Control...................................................58
2.4 Step Control of Outdoor Unit Fans .........................................................58
2.5 Outdoor Unit Fan Control in Cooling Operation .....................................59
Special Control......................................................................................60
3.1 Startup Control .......................................................................................60
3.2 Oil Return Operation ..............................................................................61
3.3 Defrosting Operation ..............................................................................63
3.4 Pump-down Residual Operation ............................................................64
3.5 Standby ..................................................................................................65
3.6 Stopping Operation ................................................................................66
3.7 Pressure Equalization Prior to Startup
50/60Hz
...................................................68
i