WDE
5 © STULZ SpA . – all rights reserved EN/36B/08.2018
Table of contents
1. Safety directions ...................................................................................................7
1.1. Symbols used in this manual .................................................................................................................... 7
1.2. Labels on the unit ......................................................................................................................................... 7
1.3. General information ..................................................................................................................................... 7
1.4. Handling refrigerants .................................................................................................................................. 8
1.5. Safety and environmental requirements .............................................................................................. 9
2. Unit identification ................................................................................................10
2.1. Intended and non-intended use ............................................................................................................13
3. Technical data and drawings ...............................................................................14
3.1. Application limits .........................................................................................................................................14
3.2. Technical data .............................................................................................................................................14
3.3. Drawings ........................................................................................................................................................17
4. Components and operating principle ..................................................................24
4.1. Component layout ......................................................................................................................................24
4.2. Operating method ......................................................................................................................................24
4.3. Mechanical components ..........................................................................................................................25
4.4. Cooling components .................................................................................................................................28
4.5. Motors ............................................................................................................................................................30
4.6. Control, monitoring and safety components.....................................................................................31
5. Unpacking and inspection ...................................................................................33
6. Installation ...........................................................................................................36
6.1. Positioning the unit ....................................................................................................................................36
6.2. Mechanical installation .............................................................................................................................37
6.3. Electric connections ..................................................................................................................................38
7. Start-up ...............................................................................................................40
8. Maintenance ........................................................................................................41
8.1. Safety instructions .....................................................................................................................................41
8.2. Preventive maintenance schedule .......................................................................................................42
8.3. Air circuit ........................................................................................................................................................42
8.4. Refrigerant circuit ......................................................................................................................................43
8.5. General appliance cleaning procedures .............................................................................................44
9. Troubleshooting ..................................................................................................45
10. Uninstalling and disposal of the unit .................................................................46
11. Options .............................................................................................................. 48
11.1. Protective treatment on condenser and evaporator – TREATW ...........................................48
11.2. Stainless steel casing – PAKIN ..........................................................................................................48
11.3. Seaworthy case packaging - SEAPACK .........................................................................................48
11.4. Refrigerant R134a .................................................................................................................................48
11.5. Electric reheat – RSC ............................................................................................................................51
11.6. Crankcase heater for compressor – CRA ......................................................................................51
11.7. Kit for low external temperatures – WINTER KIT ........................................................................51
11.8. Main switch - SWT/SWM .....................................................................................................................51
11.9. WIB1000 / WIB1485 ...........................................................................................................................52
11.10.Voltage Monitoring – VCC .................................................................................................................52
11.11.Monitoring of phase sequence and phase loss (for 3-phase scroll compressors)
– PSCR ..................................................................................................................................................................52
11.12.Soft start for three-phase compressor – SOFTT .....................................................................52
11.13.Soft start for single-phase compressor – SOFTM ...................................................................55
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