Table Of Contents - Daikin EWYD-BZ Series Installation, Maintenance & Operation Manual

Index
General information .......................................................................................................................................................... 5
Purpose of this manual................................................................................................................................................... 5
Receiving the machine ................................................................................................................................................... 5
Checks ........................................................................................................................................................................... 5
Nomenclature ................................................................................................................................................................. 6
Technical Specifications .................................................................................................................................................. 7
Storage......................................................................................................................................................................... 15
Operation...................................................................................................................................................................... 15
Mechanical installation ................................................................................................................................................... 17
Shipping ....................................................................................................................................................................... 17
Responsibility ............................................................................................................................................................... 17
Safety ........................................................................................................................................................................... 17
Moving and lifting.......................................................................................................................................................... 17
Positioning and assembly............................................................................................................................................. 18
Minimum space requirements ...................................................................................................................................... 19
Sound protection .......................................................................................................................................................... 20
Water piping ................................................................................................................................................................. 20
Water treatment............................................................................................................................................................ 22
Evaporator and recovery exchangers anti-freeze protection ........................................................................................ 22
Installing the flow switch ............................................................................................................................................... 22
Hydronic kit (optional)................................................................................................................................................... 23
Electrical installation ...................................................................................................................................................... 28
General specifications .................................................................................................................................................. 28
Electrical components .................................................................................................................................................. 28
Electrical wiring............................................................................................................................................................. 28
Electrical heaters .......................................................................................................................................................... 28
Electrical power supply to the pumps ........................................................................................................................... 29
Water pump control ...................................................................................................................................................... 29
Alarm relays - Electrical wiring..................................................................................................................................... 30
Unit On/ Off remote control - Electrical wiring.............................................................................................................. 30
Double Setpoint - Electrical wiring ............................................................................................................................... 30
External water Setpoint reset - Electrical wiring (Optional) .......................................................................................... 30
Unit limitation - Electrical wiring (Optional) .................................................................................................................. 30
The VFD and related problems .................................................................................................................................... 31
The operating principle of the VFD ............................................................................................................................... 32
The problem with harmonics ........................................................................................................................................ 32
Operation ......................................................................................................................................................................... 35
Operator's responsibilities ............................................................................................................................................ 35
Description of the machine ........................................................................................................................................... 35
Description of the refrigeration cycle ............................................................................................................................ 35
Description of the refrigeration cycle with heat recovery .............................................................................................. 37
Controlling the heat recovery circuit and installation recommendations ....................................................................... 37
Compressor.................................................................................................................................................................. 39
Compression process................................................................................................................................................... 39
Cooling capacity control ............................................................................................................................................... 41
Pre-startup checks .......................................................................................................................................................... 43
Units with an external water pump................................................................................................................................ 44
Units with a built-in water pump.................................................................................................................................... 44
Electrical power supply................................................................................................................................................. 44
Unbalance in power supply voltage .............................................................................................................................. 44
Power supply of electrical heaters ................................................................................................................................ 45
Startup procedure ........................................................................................................................................................... 46
Turning on the machine................................................................................................................................................ 46
Selecting an operating mode........................................................................................................................................ 47
Shutdown for a long time.............................................................................................................................................. 47
Starting up after seasonal shutdown ............................................................................................................................ 47
System maintenance....................................................................................................................................................... 48
General......................................................................................................................................................................... 48
Compressor maintenance ............................................................................................................................................ 48
Lubrication.................................................................................................................................................................... 48
Routine maintenance.................................................................................................................................................... 49
Replacement of filter dryer ........................................................................................................................................... 50
Procedure to replace the filter dryer cartridge .............................................................................................................. 50
Replacement of the oil filter .......................................................................................................................................... 51
Procedure to replace oil filter........................................................................................................................................ 51
Procedure to replenish refrigerant ................................................................................................................................ 53
Standard checks ............................................................................................................................................................. 54
D-EIMHP00508-16EN - 3/64