Daikin EWWD320 Installation, Operation And Maintenance Manual Download Page 23 | Manualshive

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D-EIMWC00908-16EN - 23/52

Figure 6

– Field wiring diagram

Digital Input Terminals

Evap Flow Switch

Condens Flow Switch

Remote Start/Stop

Mode Switch

Analog Input Terminals

Leaving Water Reset

Demand Limit

Evap GPM

Condens GPM

Digital Output Terminals

Evap Water Pump #1-2

Condens Water Pump #1-2

Tower Stage #1-4

Alarm NO

Alarm NC

Analog Output Terminals

0-10Vdc

Cooling Tower Bypass

Valve

0-10Vdc

Cooling Tower VFD

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Summary of Contents for EWWD320

Page 1: ...nual Installation Operation and Maintenance Manual Frictionless Centrifugal Chiller EWWD320 C10FZXS Cooling capacity from 114 to 1048 kW Refrigerant R 134a Original Instructions Installation Operation...

Page 2: ...assume no liability whatsoever for any direct or indirect damage in the widest sense of the term ensuing from or connected with the use and or interpretation of this Manual The entire content is prote...

Page 3: ...nel for 1 and 2 compressors unit 8 9 Label Identification 1 Non flammable gas symbol 6 Cable tightening warning 2 Manufacturer s logo 7 Water circuit filling warning 3 Gas type 8 Lifting instructions...

Page 4: ...22 Field Wiring Diagram Notes 24 Control Wiring 24 VFD Line Harmonics 24 Current Harmonics 24 Voltage Harmonics 24 Line Reactors 24 Harmonic Filter 25 EMI Electro Magnetic Interference and RFI Radio F...

Page 5: ...gerant used 47 Disposal 47 Index of tables Table 1 Acceptable water quality limits 14 Table 2 Electrical data 21 Table 3 Pwer wiring recommended fuses and cables 22 Table 4 Electrical data 26 Table 5...

Page 6: ...automatically controlled fluid chilling units featuring oil free magnetic bearing compressors Each unit is completely assembled and factory tested before shipment Magnitude chillers are equipped with...

Page 7: ...eat recovery Refrigerant D R 134a P R 407c Q R 410a Capacity class in kW Cooling Always 3 digit code Model series Letter A B major modification Inverter Non inverter Z Inverter Efficiency level S Stan...

Page 8: ...pressure drop 4 kPa 24 3 24 5 28 2 23 7 25 3 29 3 Insulation material None available as an option Compressor Type Frictioneless Centrifugal Compressor Oil free Sound level Sound Power Cooling dB A 89...

Page 9: ...line ATTENTION Storing in condensing atmosphere may damage the electronic components Operation ATTENTION Daikin EWWD FZ chillers are suitable for stationary installations only For any moving or marine...

Page 10: ...D EIMWC00908 16EN 10 52 Figure 1 Operating limits Other limits are Maximum startup evaporator inlet fluid temperature 32 C Maximum non operating inlet fluid temperature 38 C...

Page 11: ...jury Avoid introducing solid objects into the water pipes while the machine is connected to the system A mechanical filter must be installed on the water pipe connected to the heat exchanger inlet The...

Page 12: ...ground prepare a strong cement base that is at least 250 mm wider and longer than the machine Also this base must be strong enough to support the weight of the machine as stated in the technical spec...

Page 13: ...em during service 3 Manual or automatic air venting device at the system s highest point drain device at the system s lowest point Neither the evaporator nor the heat recovery device must be positione...

Page 14: ...quipment caused by failure to treat water or by improperly treated water Figure 3 Water piping connection for evaporator and condenser Legend translation Gauge Gauge Flexible connector Flexible connec...

Page 15: ...ult in damage to some of the machine s components Damage caused by freezing is not covered by the warranty Loss of flow protection All chiller are equipped with redundant differential pressure switche...

Page 16: ...D EIMWC00908 16EN 16 52 Figure 4 Evaporator pressure drop...

Page 17: ...D EIMWC00908 16EN 17 52...

Page 18: ...D EIMWC00908 16EN 18 52 Figure 5 Condenser pressure drop...

Page 19: ...D EIMWC00908 16EN 19 52 Figure 4 and 5 legend Label Size Label Size A 320FZ D 640FZ B 430FZ E 860FZ C 520FZ F C10FZ...

Page 20: ...e event of certain malfunctions ATTENTION This unit is designed for indoor installation Check that there is sufficient air circulation through the machine Possible damage from inhalation of refrigeran...

Page 21: ...charged with high voltage for a short period of time The unit can be worked on again after it has been switched of for 10 minutes Please consult the compressor manual for further details CAUTION The...

Page 22: ...ith copper wire and copper lugs only The table below is a reference only for dimensioning protection devices and wiring Due to different needs and local codes the customer may select different compone...

Page 23: ...low Switch Remote Start Stop Mode Switch Analog Input Terminals Leaving Water Reset Demand Limit Evap GPM Condens GPM Digital Output Terminals Evap Water Pump 1 2 Condens Water Pump 1 2 Tower Stage 1...

Page 24: ...supplied from a factory wired transformer located in the electrical box Control wiring must be of suitable size in accordance with local regulations VFD Line Harmonics Despite their many benefits car...

Page 25: ...EMC directives in a compact efficient light weight design The high common mode and differential mode reduction in the critical 150kHz to 30MHz frequencies assures that potential interference from AC d...

Page 26: ...t J11 the shield connects to GND the blue white wire to the connection and the white blue to the connection Note that Chiller B does not have or need an isolation board 5 Verify correct nodes on each...

Page 27: ...nd the compressor with maximum hours will stop first and so on Units with higher numbers will stage on in sequence The Modes setpoints will do several different types of operation Normal Efficiency St...

Page 28: ...stem to provide an opportunity for the chiller to sense a load change adjust to the change and stabilize As the expected load change becomes more rapid a greater water volume is needed The system wate...

Page 29: ...tically when the start to start timer expires Transfer Back to Grid Power Proper transfer from stand by generator power back to grid power is essential to avoid compressor damage ATTENTION Stop the ch...

Page 30: ...essors and compressed The high pressure refrigerant gas is sent to the condenser where flowing shell side the superheated refrigerant vapour cools down and starts to condense and then the liquid is su...

Page 31: ...D EIMWC00908 16EN 31 52 Figure 9 Refrigeration cycle a Single compressor unit b Dual compressor unit...

Page 32: ...ass Evaporator and condenser differential pressure switches Safety valve Valve Mechanical filter flare connection Check valve WOC Condenser leaving water centerature sensor WIC Condenser water inlet t...

Page 33: ...r speed adjusts to changes in load and or condensing temperature As compressor speed reduces due to lower loads and or condensing temperatures energy consumption dramatically reduces Part load energy...

Page 34: ...D EIMWC00908 16EN 34 52 Figure 12 Compressor overview...

Page 35: ...ck disconnector switch terminals The power supply voltage must be the same as that on the nameplate Maximum allowed tolerance 10 Voltage unbalance between the three phases must not exceed 3 Fill the w...

Page 36: ...uld cause malfunction of the control components and undesired triggering of the thermal protection devices along with a considerable reduction in the life of the contactors and electric motors Unbalan...

Page 37: ...em operated and flow balanced to meet unit requirements Electrical Power leads connected to the unit power panel s All interlock wiring complete between control panel and complies with specifications...

Page 38: ...the chiller is not The following procedures therefore must take the peculiarities of the entire system into account Shutdown If the unit is to be secured for several days and is already off due to la...

Page 39: ...way 3 Open the compressor disconnect switch Set the manual COMPRESSOR and UNIT ON OFF switches in the Unit Control Panel to the OFF position 4 Check for corrosion and clean and paint rusted surfaces 5...

Page 40: ...rheat low super cooling value Additionally a low level of liquid refrigerant inside the evaporator may be recognized In this case add R134a refrigerant only The system has been provided with a charge...

Page 41: ...for units that run for a season of approximately 90 days year at seasonal start up It is important that during initial start up and periodically during operation routine verifications and checks are...

Page 42: ...include all the weekly ones 2 The annual or early season activities include all weekly and monthly activities 3 Machine operating values should be read on a daily basis thus keeping high observation s...

Page 43: ...t the rated conditions Note When the load or the cooling water temperature vary for example due to cooling tower fans starting stopping so does the subcooling and it requires several minutes to stabil...

Page 44: ...etween 0 5 and 1 C 4 Check the subcooling value The subcooling value must be between 4 and 6 C a With reference to the above mentioned values the subcooling will be lower at 70 100 load and higher at...

Page 45: ...is sensor is located on the evaporator inlet water connection and is used for monitoring the return water temperature Evaporator differential pressure switches Two sensors are located between the evap...

Page 46: ...r Entering water temperature C _________ Condenser Pressure drop kPa _________ Condenser Water flow rate m 3 h _________ Refrigerant side measurements Compressors Compressor 1 Load _____ Compressor 2...

Page 47: ...l power supply must be within the voltage limits and without voltage harmonics or sudden changes 5 The three phase power supply must not have un unbalance between phases exceeding 3 The machine must s...

Page 48: ...gerant charge Factory Field h Greenhouse gas emission of the total refrigerant charge expressed as tonnes of CO2 equivalent m Refrigerant type n GWP Global Warming Potential p Unit serial number 2 The...

Page 49: ...osal The unit is made of metal and plastic parts All these parts must be disposed of in accordance with the local regulations in terms of disposal Lead batteries must be collected and taken to specifi...

Page 50: ...D EIMWC00908 16EN 50 52...

Page 51: ...D EIMWC00908 16EN 51 52...

Page 52: ...of its content and the products and services presented therein Specification are subject to change without prior notice Refer to the data communicated at the time of the order Daikin Applied Europe S...

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