Daikin VRV II RXYQ8MY1K Service Manual

Contents

Daikin VRV II RXYQ8MY1K Service Manual Manual pdf 2 page image

Si39-502ATable of Contents iR-410A Heat Pump50/60Hz1. Introduction ............................................................................................ vi1.1 Safety Cautions ....................................................................................... vi1.2 PREFACE ................................................................................................xPart 1 General Information ........................................................... 11. Model Names of Indoor/Outdoor Units....................................................22. External Appearance...............................................................................32.1 Indoor Units ..............................................................................................32.2 Outdoor Units ...........................................................................................43. Combination of Outdoor Units.................................................................54. Capacity Range.......................................................................................6Part 2 Specifications .................................................................... 71. Specifications ..........................................................................................81.1 Outdoor Units ...........................................................................................81.2 Indoor Units ............................................................................................16Part 3 Refrigerant Circuit ........................................................... 431. Refrigerant Circuit .................................................................................441.1 RXYQ8M, 10M .......................................................................................442. Functional Parts Layout ........................................................................462.1 RXYQ8M, 10M .......................................................................................463. Refrigerant Flow for Each Operation Mode...........................................47Part 4 Function............................................................................ 511. Function General...................................................................................521.1 Symbol ...................................................................................................521.2 Operation Mode......................................................................................532. Basic Control.........................................................................................542.1 Normal Operation ...................................................................................542.2 Compressor PI Control...........................................................................552.3 Electronic Expansion Valve PI Control...................................................582.4 Step Control of Outdoor Unit Fans .........................................................582.5 Outdoor Unit Fan Control in Cooling Operation .....................................593. Special Control......................................................................................603.1 Startup Control .......................................................................................603.2 Oil Return Operation ..............................................................................613.3 Defrosting Operation ..............................................................................633.4 Pump-down Residual Operation ............................................................643.5 Standby ..................................................................................................653.6 Stopping Operation ................................................................................663.7 Pressure Equalization Prior to Startup ...................................................68