Daikin EWWD 340 C18 I-SS Series Installation, Operation And Maintenance Manual Download Page 1

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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

–EIMWC00408-16EN

All manuals and user guides at all-guides.com

Summary of Contents for EWWD 340 C18 I-SS Series

Page 1: ...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 EIMWC00408 16EN All manuals and user guides...

Page 2: ...ctrical wiring Optional 17 Guidelines for remote condenser application 18 Refrigerant piping design 18 Determining Equivalent Line Length 19 Liquid Line Sizing 20 Discharge Hot Gas Line Sizing 20 Oil...

Page 3: ...ser Located above Chiller Unit 19 Fig 9 Condenser Located below Chiller Unit 19 Fig 10 Refrigeration cycle of the EWWD I SS Single Circuit 24 Fig 11 Refrigeration cycle of the EWLD I SS Single Circuit...

Page 4: ...WARNING Before starting the installation of the unit please read this manual carefully Starting up the unit is absolutely forbidden if all instructions contained in this manual are not clear Key to sy...

Page 5: ...ng warning 9 Electrical hazard symbol 5 Water circuit filling warning 10 Emergency stop Three Compressors Unit 1 Unit nameplate data 6 Hazardous Voltage warning 2 Lifting instructions 7 Manufacturer s...

Page 6: ...symbols Important note failure to respect the instruction can damage the unit or compromise functioning Note regarding safety in general or respect of laws and regulations Note concerning electrical...

Page 7: ...s manual The purpose of this manual is to allow the installer and the qualified operator to carry out all required operations in order to ensure proper installation and maintenance of the machine with...

Page 8: ...n ATTENTION Storage in a condensed atmosphere can damage the electronic components Storage at ambient temperature near or below 0 C with water loops filled with water require to protect against water...

Page 9: ...exchanger inlet The machine is supplied with safety valves that are installed on both the high and the low pressure sides of the refrigerant circuit In case of sudden stop of the unit follow the instr...

Page 10: ...sembly All units are designed for installation indoors The machine must be installed on a robust and perfectly level foundation should the machine be installed on balconies or roofs it might be necess...

Page 11: ...tem s highest point 4 A suitable device that can maintain the water system under pressure expansion tank etc 5 Water temperature and pressure indicators on the machine to assist the operator during se...

Page 12: ...D EIMWC00408 16EN 12 60 Fig 3 Minimum clearance requirements for machine maintenance Fig 4 Water piping connection for condenser and heat recovery All manuals and user guides at all guides com...

Page 13: ...e considered when designing the system as a whole 1 Continuous water flow circulation inside piping and exchangers 2 Addition of an appropriate amount of glycol inside the water circuit 3 Additional h...

Page 14: ...g the safety valves to the drainage pipes and for their correct dimensioning Check for adequate air circulation around the machine General specifications CAUTION All electrical connections to the mach...

Page 15: ...disconnector switch is in the closed position unused circuits are live as well CAUTION Concurrence of single phase and three phase charges and unbalance between phases can cause leakages towards grou...

Page 16: ...oil The terminals are connected to a clean microprocessor contact The microprocessor contact has the following commutation capacity Maximum voltage 250 Vac Maximum current 2 A Resistive 2 A Inductive...

Page 17: ...pe and must not be laid in the vicinity of the power cables so as not to induce interference with the electronic controller A digital input allows to enable the current limitation at the desired time...

Page 18: ...ith refrigerant This prevents scale formation and the possible formation of an explosive mixture of HFC 134a and air This will also prevent the formation of toxic phosgene gas which occurs when HFC 13...

Page 19: ...riction loss from the linear run of pipe plus the added friction loss of elbows valves etc Table 2 shows the equivalent length of pipe for various nonferrous valves and fittings Follow these steps whe...

Page 20: ...he chiller unit and the air cooled condenser must not exceed 60 equivalent meters Liquid line risers in the system will require an additional 11 5 kPa pressure drop per meter of vertical rise When it...

Page 21: ...led on the discharge line Reference for discharge line sizing is shown in Table 9 It has to be used for reference only for circuit working with evaporator leaving temperature equal to 7 C and condensi...

Page 22: ...ompressed and during this process the refrigerant mixes with the oil from the oil separator The high pressure oil refrigerant mixture is introduced into the centrifuge type high efficiency oil separat...

Page 23: ...evaporation followed by superheating Once it has reached the superheated vapour state the refrigerant leaves the evaporator and is once again taken into the compressor to repeat the cycle Controlling...

Page 24: ...RE SWITCH HIGH PRESSURE SWITCH F12 LP F13 HP LOW PRESSURE TRANSDUCER 0 5 7 bar HIGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATURE WH1 WOE WL1 WIE OIL TEMPERATURE WD...

Page 25: ...GAS CHARGE PORT LOW PRESSURE SWITCH HIGH PRESSURE SWITCH F12 LP F13 HP LOW PRESSURE TRANSDUCER 0 5 7 bar HIGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATURE WH1 WOE...

Page 26: ...ITH GAS CHARGE PORT LOW PRESSURE SWITCH HIGH PRESSURE SWITCH F12 LP F13 HP LOW PRESSURE TRANSDUCER 0 5 7 bar HIGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATURE WH1...

Page 27: ...2 WAY ANGLE VALVE WITH GAS CHARGE PORT LOW PRESSURE SWITCH HIGH PRESSURE SWITCH F12 LP F13 HP LOW PRESSURE TRANSDUCER 0 5 7 bar HIGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WA...

Page 28: ...T LOW PRESSURE SWITCH HIGH PRESSURE SWITCH F12 LP F13 HP LOW PRESSURE TRANSDUCER 0 5 7 bar HIGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATURE WH1 WOE WL1 WIE OIL TE...

Page 29: ...P F13 HP LOW PRESSURE TRANSDUCER 0 5 7 bar HIGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATURE WH1 WOE WL1 WIE OIL TEMPERATURE WD1 ST1 SUCTION TEMPERATURE LIQUID INJ...

Page 30: ...PRESSURE SWITCH F12 LP F13 HP LOW PRESSURE TRANSDUCER 0 5 7 bar HIGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATURE WH1 WOE WL1 WIE OIL TEMPERATURE WD1 ST1 SUCTION...

Page 31: ...GH PRESSURE SWITCH F12 LP F13 HP LOW PRESSURE TRANSDUCER 0 5 7 bar HIGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATURE WH1 WOE WL1 WIE OIL TEMPERATURE WD1 ST1 SUCTIO...

Page 32: ...WITCH HIGH PRESSURE SWITCH F12 LP F13 HP LOW PRESSURE TRANSDUCER 0 5 7 bar HIGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATURE WH1 WOE WL1 WIE OIL TEMPERATURE WD1 ST...

Page 33: ...P F13 HP LOW PRESSURE TRANSDUCER 0 5 7 bar HIGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATURE WH1 WOE WL1 WIE OIL TEMPERATURE WD1 ST1 SUCTION TEMPERATURE LIQUID INJ...

Page 34: ...IGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATURE WH1 WOE WL1 WIE OIL TEMPERATURE WD1 ST1 SUCTION TEMPERATURE LIQUID INJECTION SOL VALVE Y5 OIL PRESSURE TRANDUCER W...

Page 35: ...IGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATURE WH1 WOE WL1 WIE OIL TEMPERATURE WD1 ST1 SUCTION TEMPERATURE LIQUID INJECTION SOL VALVE Y5 OIL PRESSURE TRANDUCER W...

Page 36: ...TCH F12 LP F13 HP LOW PRESSURE TRANSDUCER 0 5 7 bar HIGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATURE WH1 WOE WL1 WIE OIL TEMPERATURE WD1 ST1 SUCTION TEMPERATURE L...

Page 37: ...SSURE SWITCH HIGH PRESSURE SWITCH F12 LP F13 HP LOW PRESSURE TRANSDUCER 0 5 7 bar HIGH PRESSURE TRANSDUCER 0 30 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATURE WH1 WOE WL1 WIE OIL TEMPERATURE...

Page 38: ...s done thanks to a suitably shaped special composite material that is interposed between the main screw and the satellite The main shaft on which the main rotor is splined is supported by 2 ball beari...

Page 39: ...ume is closed off from the suction chamber the suction stage of the compression cycle is complete 1 2 3 Compression As the main rotor turns the volume of gas trapped within the flute is reduced as the...

Page 40: ...D EIMWC00408 16EN 40 60 Fig 26 Refrigeration capacity control mechanism of compressor Fr4 Load Unload All manuals and user guides at all guides com...

Page 41: ...itch 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 The unit comes with a factor...

Page 42: ...is 383 386 392 387 Volts 3 thus the unbalance percentage is 29 1 100 387 387 392 x below the maximum allowed 3 Oil Heaters power supply Each compressor comes with an electrical resistance located in...

Page 43: ...pletely fully without bubbles and that the humidity indicator shows Dry Any bubbles inside the liquid sight glass might indicate a low refrigerant level or an excessive pressure drop through the filte...

Page 44: ...ring the winter season One must remember that once the machine s power supply has been cut off the anti freeze electrical resistance cannot function Do not leave the evaporator and piping exposed to t...

Page 45: ...unit and on the state of the pressurised refrigeration circuits carried out after ten years of use in compliance with Italian law Lgs Decree 93 2000 for all groups belonging to categories I and IV co...

Page 46: ...D EIMWC00408 16EN 46 60 Fig 27 Installation of control devices for Fr4 compressor All manuals and user guides at all guides com...

Page 47: ...lters and re check after 1000 running hours Continue to replace filters until the TAN is lower than 0 10 0 19 Change oil replace oil filter and filter dryer Verify at regular intervals 7 Safety valves...

Page 48: ...e the filter cover 12 Connect the vacuum pump to the filter and pull vacuum to 230 Pa 13 Close the vacuum pump valve 14 Recharge the filter with the refrigerant recovered during emptying 15 Open the l...

Page 49: ...edure Procedure to replace oil filter 1 Shut down both compressors by turning the Q1 and Q2 switches to the Off position 2 Turn the Q0 switch to Off wait for the circulation pump to turn off and open...

Page 50: ...me below 2 C under any condition Also the subcooling value can change slightly as the water temperature and the suction superheating vary As the suction superheating value decreases there is a corresp...

Page 51: ...e microprocessor will control the compressor load in order to allow it to function even if the compressor flow gas must be reduced It also contributes to the oil control logic Oil pressure transducer...

Page 52: ...e _____ bar Suction gas temperature _____ C Suction superheating _____ C Condensation saturated temperature _____ C Discharge superheating _____ C Liquid temperature _____ C Subcooling _____ C _____ C...

Page 53: ...s RS ST RT _____ V _____ V _____ V Unbalance _____ 100 max x Vaverage Vaverage V Compressors current Phases R S T Compressor 1 _____ A _____ A _____ A Compressor 2 _____ A _____ A _____ A Compressor 3...

Page 54: ...propriate manner beyond its operating limits or not performing proper maintenance according to this manual can void the warranty Observe the following points in particular in order to conform to warra...

Page 55: ...lease check with your local requirements Important information regarding the refrigerant used This product contains fluorinated greenhouse gases Do not vent gases into the atmosphere Refrigerant type...

Page 56: ...ield 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 filled out label must...

Page 57: ...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 filled out label mus...

Page 58: ...f 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 specific refuse collection cen...

Page 59: ...D EIMWC00408 16EN 59 60 All manuals and user guides at all guides com...

Page 60: ...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 p A explicitly rejects...

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