Daikin EWLD400I-SS Bruksanvisning

Daikin Luftkonditionering EWLD400I-SS

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Water-cooled screw chillers

EWWD 340 ÷ C18 I-SS

EWWD 360 ÷ C12 I-XS

EWLD 320 ÷ C17 I-SS

50Hz – Refrigerant: R-134a

Original Instructions

Installation, Operation and Maintenance Manual

D–EIMWC00404-14EN

D–EIMWC00404-14EN - 2/86

Contents

Contents ............................................................................................................................................................................. 2

General information .......................................................................................................................................................... 6

Warnings for the operator ................................................................................................................................................. 6

Assistance ........................................................................................................................................................................ 6

Spare parts ....................................................................................................................................................................... 6

Receiving the machine ..................................................................................................................................................... 6

Checks ............................................................................................................................................................................. 7

Purpose of this manual ..................................................................................................................................................... 7

Important information on the refrigerant used ................................................................................................................... 7

NOMENCLATURE ........................................................................................................................................................... 8

002 = Second order this model (1 or more units) ........................................................................................................... 8

… = … order this model ............................................................................................................................................... 8

Technical Specifications ................................................................................................................................................... 9

Sound pressure levels .................................................................................................................................................... 22

Sound pressure correction factors for different distances............................................................................................... 24

Operating limits ............................................................................................................................................................... 25

Storage ........................................................................................................................................................................... 25

Operation ........................................................................................................................................................................ 25

Mechanical Installation ................................................................................................................................................... 28

Shipping ......................................................................................................................................................................... 28

Responsibility ................................................................................................................................................................. 28

Safety ............................................................................................................................................................................. 28

Handling and lifting ......................................................................................................................................................... 28

Positioning and assembly ............................................................................................................................................... 29

Minimum space requirements ........................................................................................................................................ 30

Ventilation ....................................................................................................................................................................... 30

Sound protection ............................................................................................................................................................ 30

Water piping ................................................................................................................................................................... 30

Water treatment .............................................................................................................................................................. 32

Evaporator and exchangers anti-freeze protection ......................................................................................................... 32

Installing the flow switch ................................................................................................................................................. 32

Pressure drops ................................................................................................................................................................ 34

Total heat recovery (option on request) ........................................................................................................................ 39

Partial Heat recovery (option on request) ..................................................................................................................... 41

Electrical Installation ...................................................................................................................................................... 42

General specifications .................................................................................................................................................... 42

Electrical components .................................................................................................................................................... 45

Electrical wiring .............................................................................................................................................................. 45

Oil Heaters ..................................................................................................................................................................... 45

Water pump control ........................................................................................................................................................ 45

Unit On/Off remote control – Electrical wiring ................................................................................................................. 45

Double Setpoint – Electrical wiring ................................................................................................................................. 45

External water Setpoint reset – Electrical wiring (Optional) ............................................................................................ 45

Unit limitation – Electrical wiring (Optional) .................................................................................................................... 46

Guidelines for remote condenser application .............................................................................................................. 47

Refrigerant piping design................................................................................................................................................ 47

Determining Equivalent Line Length ............................................................................................................................... 48

Liquid Line Sizing ........................................................................................................................................................... 49

Discharge (Hot Gas) Line Sizing .................................................................................................................................... 49

Oil Charge ...................................................................................................................................................................... 50

Operation ......................................................................................................................................................................... 51

Operator’s responsibilities .............................................................................................................................................. 51

Description of the machine ............................................................................................................................................. 51

Description of the refrigeration cycle .............................................................................................................................. 51

Description of the refrigeration cycle with partial heat recovery...................................................................................... 51

Controlling the partial recovery circuit and installation recommendations ...................................................................... 52

Compression process ..................................................................................................................................................... 67

Pre-startup checks .......................................................................................................................................................... 70

General........................................................................................................................................................................... 70

Units with external water pump ...................................................................................................................................... 71

Electrical power supply ................................................................................................................................................... 71

Unbalance in power supply voltage ................................................................................................................................ 71

Oil Heaters power supply ............................................................................................................................................... 71

Emergency Stop ............................................................................................................................................................. 71

Startup procedure ........................................................................................................................................................... 72

Turning on the machine .................................................................................................................................................. 72