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EWWD 380-C11 BJYNN

EWWD 380-C11 BJYNN. EWWD 380-C11 BJYNN. Water Cooled Chiller 369 kW ÷ 1050 kW Single Screw Compressor. TABLE OF CONTENT. Unit position into the range Operating Limits Compressor features Refrigerant Circuit Flooded evaporator Refrigerant level control Control & remote control

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EWWD 380-C11 BJYNN

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  1. EWWD380-C11BJYNN

  2. EWWD380-C11BJYNN Water Cooled Chiller 369 kW ÷ 1050 kW Single Screw Compressor

  3. TABLE OF CONTENT • Unit position into the range • Operating Limits • Compressor features • Refrigerant Circuit • Flooded evaporator • Refrigerant level control • Control & remote control • Unit delivery • Options summary • Options as standard • Options on request

  4. A. UNIT POSITION INTO THE RANGE (1/2) EWWD-BJYNN: unit efficiency level 6 5.9 550 900 C10 C11 5.8 380 460 750 850 5.7 5.6 EER 5.5 5.4 5.3 5.2 5.1 5 200 300 400 500 600 700 800 900 1000 1100 1200 kW

  5. A. UNIT POSITION INTO THE RANGE (2/2) EWWD-BJYNN : cooling range 1 Compressor 2 Compressors 200 400 600 800 1000 1200 kW cooling @ Evap. 12/7°C - Cond. 30/35°C kW cooling @ Evap. 12/7°C - Cond. 30/35°C Link back

  6. B. OPERATING LIMITS Link back

  7. C. COMPRESSOR FEATURES (1/3) EWWD-BJYNN – Single Screw Compressor “ Frame4 ” single screw compressor • naturally axial balanced loads • naturally radial balanced loads • 2 specular compression cycles • infinitely variable cooling capacity control • external oil separator • direct driven screw (no gear) • 6 electrical terminals for Y-D as standard • fully semi-hermetic design • composite material on gate rotors compression suction discharge

  8. C. COMPRESSOR FEATURES (2/3) EWWD-BJYNN – Single Screw Compressor “ Frame4 ” radial balancing axial balancing better chilled water stability Composite material (carbon base composition) to improve compressor reliability and energy performances Stepless slide valve (oil controlled) to change compressor capacity to match exactly the plant thermal request

  9. C. COMPRESSOR FEATURES (3/3) EWWD-BJYNN – Single Screw Compressor “ Frame4 ” External oversized oil separator for the highest efficiency (99.985%) requested by flooded heat exchanger. Six electrical terminals to allow as standard a star-delta (Y-D) compressor start Fully semi-hermetic design to allow ordinary maintenance and to replace easily each component if necessary Link back

  10. D. REFRIGERANT CIRCUIT EWWD-BJYNN – P&I Link back

  11. E. FLOODED EVAPORATOR EWWD-BJYNN – Flooded evaporator • McQuay engineered and manufactured flooded evaporator (with refrigerant in shell and water inside the tubes) for high performance. Same centrifugal chillers technology. • Replaceable water tubes internally rifled and externally enhanced copper, mechanically bonded to steel tube sheets • Two compressors on the same flooded evaporator to increase part load efficiency. Link back

  12. F. REFRIGERANT LEVEL CONTROL EWWD-BJYNN – Servo controlled refrigerant level regulator Servo controlled liquid regulator is operating by a pilot float valve that is leading the open/close sequence of the main exp. valve to optimize refrigerant feed to the evaporator in all the working conditions Link back

  13. G. CONTROL & REMOTE CONTROL (1/3) EWWD-BJYNN – Microprocessor Control “Microtech II C Plus” Motherboard with microprocessors • Unit Controller fully programmed and engineered by McQuay on Carel hardware • P.I.D. logic (proportional, integrative, derivative) • Compressor regulated according leaving evaporator water temperature (LEWT) to match customer set-point within ± 0.2°C • Easy visual interface with 4 rows and 20 characters display and 15 keypad

  14. G. CONTROL & REMOTE CONTROL (2/3) EWWD-BJYNN – Microprocessor Control “Microtech II C Plus” "set-point reset" from external signal "demand limit" or "current limit" "soft load" • High value control functions implemented as standard into the logic Link back options summary

  15. G. CONTROL & REMOTE CONTROL (3/3) EWWD-BJYNN – Microprocessor Control “Microtech II C Plus” • Easy integration into building automation systems via separate digital connection for unit start/stop, status, general fault and 4-20 mA signals for chilled water setpoint reset and demand limiting; • Communications capabilities for remote monitoring, changing of setpoint, trend logging, alarm and event detection, via a compatible IBM-PC with Daikin PlantVisor 1.0 software; • BMS communication capability via Modbus, BacNet, LonWorks protocol; • Remote communications capabilities via modem/GSM (up to 8 chillers with Gateway Modem); • Compatibility with Daikin CSC II (Chiller Sequencing Control) Link back table of content Link back options summary

  16. H. UNIT DELIVERY EWWD-BJYNN – Unit delivery, moving and lifting • Unit is delivered EXW (Ex works); • Each unit is tested at full load before shipping; • Unit handling must be according to IOM manual. Link back

  17. Standard options Brine version (OPZH;OPZL) Double setpoint Thermal relays compressors Under/over voltage controller Victaulic on condenser Flow switch for evaporator Setpoint reset and demand limit Alarm from external device Rubber type antivibration mounts Main switch (OP52) Electronic Expansion valve (OPEX) Available options Power factor 0.9 (OPPF) Suction stop valve (OP12) A/V meter (OP57) Soft starter (OPSS) Cu/Ni heat exchanger EWWD-BJYNN: OPTIONS SUMMARY

  18. 1. OPTIONS AS STANDARD (1/2) FLOW SWITCH – Supplied separately to be wired and installed on the evaporator water piping (by the customer). COMPRESSOR THERMAL OVER RELAYS– Safety devices against compressor motor overloading in addition to the normal protection envisaged by the electrical windings. UNDER/OVER VOLTAGE –Phase monitor to control the minimum and maximum voltage value that the user can set. ALARM FROM EXTERNAL DEVICE – Microprocessor is able to receive an alarm signal from an external device (pump etc…). User can decide if this alarm signal will stop or not the unit Link back options summary

  19. 1. OPTIONS AS STANDARD (2/2) RUBBER TYPE ANTIVIBRATION MOUNTS – Supplied separately, these are positionned under the base of the unit for “floor installation” OPEX – Electronic expansion valve – It proposes features that makes it unique: short openning and closing time, high resolution, positive shut-off function to eliminate use of additional solenoid valve, highly linear flow capacity, continous modulation of mass flow without stress in the refrigerant circuit and corrosion resistance stainless steel body Link back options summary

  20. 2. OPTIONS ON REQUEST OPSSSoft start –Electronic starting device to reduce starting current. An overload protection is included (no need of compressors thermal relays). OP12 - Suction line shut off valve – Suction shut-off valve installed on the suction port of the compressor to facilitate maintenance operation. OPLNSound proof cabinet– Made of sheet metal and internally insulated, the sound proof cabinet is around the compressor/s reach the best performance in noise reduction. OPPF- Capacitor power factor correction - Installed on the electrical control panel to ensure it conforms to the plant rules (Daikin advises maximum 0,9). OP57- Ammeter and voltmeter– Digital meters of unit drawn amperes and voltage values, installed on the electrical control panel. Link back options summary

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