Daikin VRV K Manual Download

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Si-95

Table of Contents

Inverter K Series

Series

1. Introduction .............................................................................................v

1.1

Safety Cautions ....................................................................................... v

1.2

PREFACE................................................................................................ix

Part1

General Information Inverter K Series ..............................1

1. Outline.....................................................................................................2

1.1

System Outline ........................................................................................ 2

1.2

Allowed Range of Indoor Unit and BS Unit Connection .......................... 3

Part2

Functions Inverter K Series ...............................................5

1. Functions.................................................................................................6

1.1

Outdoor Unit Refrigerant Diagrams ......................................................... 6

1.2

List of Safety Devices and Functional Parts Setting Values.................... 9

1.3

Flow of Refrigerant in Each Operation Mode ........................................ 10

1.4

Outline of Control................................................................................... 15

1.5

Safety for Restart................................................................................... 17

1.6

Equalized Oil Level Operation
(Equalized Oil Level between Twin Compressors)................................ 19

1.7

Oil Return Operation.............................................................................. 20

1.8

Defrost ................................................................................................... 21

1.9

Pressure Equalization Control ............................................................... 23

1.10 Frequency Limit Control by Pressure Equalization................................ 24
1.11 BS Changeover Control......................................................................... 25
1.12 Pump Down Residual Operation ........................................................... 26
1.13 Step Down / Safety Control

→

Standby (Forced Thermostat OFF)

→

Stop Due to Malfunction ........................................................................ 27

1.14 Low Noise Control ................................................................................. 29
1.15 Demand Control .................................................................................... 30
1.16 Compressor Capacity Control ............................................................... 31
1.17 Te / Tc Setting ....................................................................................... 32
1.18 Gas Depletion Alarm ............................................................................. 33
1.19 Drain Pump Control ............................................................................... 34
1.20 Louver Control for Preventing Ceiling Dirt ............................................. 36
1.21 Thermostat Sensor in Remote Controller .............................................. 37
1.22 Freeze Prevention ................................................................................. 39

Part3

Test Operation Inverter K Series.....................................41

1. Test Operation ......................................................................................42

1.1

When Power is Turned On .................................................................... 42

1.2

Outdoor Unit PC Board Ass’y ................................................................ 43

1.3

Setting Modes........................................................................................ 45

1.4

Sequential Start ..................................................................................... 51

1.5