Daikin EWWQ800AJYNN [2/72] D 808 c 08 01 a en pag 2 72

Daikin EWWQ650AJYNN/A [2/72] D 808 c 08 01 a en pag 2 72
D -808 C – 08/01 A – EN Pag. 2/72
Contents
General information..........................................................................................................................................................4
Safe use and maintenance of the unit, as explained in this Maintenance and Use Manual, is fundamental to prevent
any accidents occurring to operators during both operation and maintenance as well as during repair work. .................4
Warnings for the operator.................................................................................................................................................4
Assistance........................................................................................................................................................................4
Spare parts....................................................................................................................................................................... 4
Receiving the machine .....................................................................................................................................................4
Checks .............................................................................................................................................................................4
Purpose of this manual.....................................................................................................................................................5
Important information on the refrigerant used...................................................................................................................5
NOMENCLATURE ........................................................................................................................................................... 6
Operating limits...............................................................................................................................................................16
Storing............................................................................................................................................................................ 16
Operation........................................................................................................................................................................ 16
Mechanical Installation...................................................................................................................................................18
Shipping ......................................................................................................................................................................... 18
Responsibility .................................................................................................................................................................18
Safety.............................................................................................................................................................................18
Moving and lifting ........................................................................................................................................................... 18
Positioning and assembly...............................................................................................................................................20
Minimum space requirements ........................................................................................................................................20
Ventilation.......................................................................................................................................................................20
Sound protection ............................................................................................................................................................20
Water piping ...................................................................................................................................................................20
Water treatment.............................................................................................................................................................. 22
Evaporator and exchangers anti-freeze protection......................................................................................................... 22
Installing the flow switch................................................................................................................................................. 23
Electrical Installation ......................................................................................................................................................36
General specifications .................................................................................................................................................... 36
Electrical components .................................................................................................................................................... 39
Electrical wiring ..............................................................................................................................................................39
Electrical resistances...................................................................................................................................................... 39
Water pump control........................................................................................................................................................39
Unit On/Off remote control – Electrical wiring.................................................................................................................39
Double Setpoint – Electrical wiring................................................................................................................................. 39
External water Setpoint reset – Electrical wiring (Optional)............................................................................................39
Unit limitation – Electrical wiring (Optional) ....................................................................................................................40
Operation.........................................................................................................................................................................42
Operator’s responsibilities ..............................................................................................................................................42
Description of the machine............................................................................................................................................. 42
Description of the refrigeration cycle ..............................................................................................................................42
Description of the refrigeration cycle with partial heat recovery......................................................................................47
Controlling the partial recovery circuit and installation recommendations ......................................................................47
Compression process..................................................................................................................................................... 49
Pre-startup checks..........................................................................................................................................................54
General .......................................................................................................................................................................... 54
Units with external water pump ......................................................................................................................................55
Electrical power supply...................................................................................................................................................55
Unbalance in power supply voltage................................................................................................................................55
Electrical resistances power supply................................................................................................................................56
Emergency Stop.............................................................................................................................................................56
Startup procedure...........................................................................................................................................................57
Turning on the machine.................................................................................................................................................. 57
Seasonal shutdown........................................................................................................................................................58
Starting up after seasonal shutdown ..............................................................................................................................58
System maintenance ......................................................................................................................................................59
General .......................................................................................................................................................................... 59
Compressor maintenance ..............................................................................................................................................59
Lubrication......................................................................................................................................................................59
Routine maintenance ..................................................................................................................................................... 62
7) Safety valves ...................................................................................................................................................... 62
Check that the lid and seal have not been tampered with..............................................................................................62
Check that the discharge socket of the safety valves is not obstructed by any objects, rust or ice................................ 62
Check the manufacturing date shown on the safety valve. Replace the valve every 5 years and make sure it is
compliant with the current regulations in terms of the installation of the unit.................................................................. 62
Replacement of filter dryer ............................................................................................................................................. 63

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