Table of Contents
Related Manuals for Daikin EWAD-C
Summary of Contents for Daikin EWAD-C
- Page 1 Date 04/2021 Supersedes D-EIMAC00608-16EU D-EIMAC00608-16EN-AR Installation, Operation and Maintenance Manual Installation, Operation and Maintenance Manual D-EIMAC00608-16_01EN Air cooled screw chillers EWAD~C EWAD~CF Original Instructions...
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Page 2: Table Of Contents
CONTENTS INTRODUCTION..............................7 Precautions against residual risks .......................... 7 Description ................................8 RECEIVING THE UNIT ............................8 OPERATING LIMITS ............................8 Storing Storage ............................... 8 Operation ................................8 Operation with Option 187 ............................9 FREECOOLING UNIT VERSION ........................10 Operation with Option 187 ............................ 12 MECHANICAL INSTALLATION ........................ -
Page 3: Figure 1 - Typical Refrigerant Circuit
Figure 1 - Typical refrigerant circuit Water inlet and outlet are indicative. Please refer to the machine dimensional diagrams for exact water connections. D-EIMAC00608-16_01EN - 3/27... -
Page 4: Figure 2 - Typical Refrigerant Circuit With Heat Recovery
Figure 2 - Typical refrigerant circuit with heat recovery Water inlet and outlet are indicative. Please refer to the machine dimensional diagrams for exact water connections. D-EIMAC00608-16_01EN - 4/27... - Page 5 LEGEND DESCRIPTION Compressor Discharge shut off valve High-pressure transducer Service port High-pressure safety valve Axial ventilator Condenser coil Load Valve Liquid line isolating valve Dehydration filter Liquid and humidity indicator Economiser solenoid valve Economiser thermostatic expansion valve Economiser (not available for EWAD650C-SS/SL/SR) Electronic expansion valve Evaporator Low-pressure safety valve...
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Page 6: Figure 3 - Description Of The Labels Applied To The Electrical Panel
Figure 3 - Description of the labels applied to the electrical panel Label Identification 1 – Non flammable gas symbol 6 – Electrical hazard symbol 2 – Gas type 7 – Hazardous Voltage warning 3 – Unit nameplate data 8 – Cable tightening warning 4 –... -
Page 7: Introduction
INTRODUCTION This manual provides information on the standard functions and procedures of all units in the series and is an important supporting document for qualified personnel, but can never replace it. All units are delivered with wiring diagrams, certified drawings, nameplate, and Declaration Of Conformity; these documents show all technical data for the unit you have bought. -
Page 8: Description
25. keep all the safety devices in good working order and check them periodically according to the regulations in force 26. keep all lubricants in suitably marked containers 27. do not store inflammable liquids near the unit 28. solder or braze only empty pipes after removing all traces of lubricant oil; do not use flames or other heat sources in the vicinity of pipes containing refrigerant fluid 29. -
Page 9: Operation With Option 187
Figure 4 - Operating limits for standard units Standard Efficiency High Efficiency Premium Efficiency Operation with Water and Glycol In this area, the unit may operate partly. Consult performance tables Operation with fan velocity adjustment only below 10°C ambient temperature Operation with fans with Speedtroll only (below -10°C ambient temperature) Operation with Option 187 The following ranges of units can operate with an extended envelope as shown in Fig. -
Page 10: Freecooling Unit Version
Figure 5 - Operating limits with Option 187 Note. The above graphic represents a guideline about the operating limits of the range. Please refer to Chiller Selection Software (CSS) for real operating limits working conditions for each size. FREECOOLING UNIT VERSION Freecooling units have additional coils used to pre-cool the fluid coming from the building and increase the overall efficiency by unloading the compressors until their completely stop if the environments conditions allow i t. -
Page 11: Figure 6 - Freecooling System With 3 Way Valve
There are two types of freecooling control system: Figure 6 - Freecooling system with 3 Way Valve EWAD640CF-XS/XL ÷ EWADC11CF-XS/XL - EWAD600CF-XR ÷ EWADC10CF-XR EEWT = Water entering temperature probe ELWT = Water leaving temperature probe Figure 7 - Freecooling system with 2 Way Valve EWADC12CF-XS/XL ÷... -
Page 12: Operation With Option 187
Operation with Option 187 The following ranges of units can operate with an extended envelope as shown in Fig. 8 EWAD CF-XS EWAD CF-XL EWAD CF-XR Figure 8 - Operating limits with Option 187 Note. The above graphic represents a guideline about the operating limits of the range. Please refer to Chiller Selection Software (CSS) for real operating limits working conditions for each size. -
Page 13: Moving And Lifting
If the unit is correctly installed, operated and manteined the noise emission level do not require any special protection device to operate continuosly close to the unit without any risk. In case of installation with special noise requirements it could be necessary to install additional sound attenuation devices. Moving and lifting Avoid bumping and/or jolting during loading/unloading unit from the truck and moving it. -
Page 14: Minimum Space Requirements
In any case, the microprocessor will allow the unit to adapt itself to new operating conditions and deliver the maximum available capacity under any given circumstances, even if the lateral distance is lower than recommended, unless the operating conditions should affect personel safety or unit reliability. When two or more units are positioned side by side, a distance of at least 3600 mm between condenser banks is recommended. -
Page 15: Multiple Chiller Installed Side By Side In A Free Field With Dominant Wind
All the above cases are even more sensitive in case of design conditions close to the limits of the unit operating envelope. NOTE: Daikin cannot be considered responsible in case of malfunctions generated by hot air recirculation or insufficient airflow as result of improper installation if the above recommendations are ignored. -
Page 16: Sound Protection
Sound protection When sound levels require special control, great care must be exercised to isolate the unit from its base by appropriately applying anti-vibration elements (supplied as an option). Flexible joints must be installed on the water connections, as well. Water piping Piping must be designed with the lowest number of elbows and the lowest number of vertical changes of direction. -
Page 17: Water Treatment
Figure 12 - Water piping connection for evaporator Pressure Gauge Isolation Valve Flexible connector Pump Flow switch Filter Temperature probe Figure 13 - Water piping connection for evaporator Pressure Gauge Isolation Valve Flexible connector Pump Temperature probe Filter 5.10 Water treatment Before putting the unit into operation, clean the water circuit. -
Page 18: Evaporator And Recovery Exchangers Anti-Freeze Protection
Table 1 - Acceptable water quality limits Shell&tube + DAE Water quality requirements BPHE Flooded Ph (25 °C) 6.8 ÷ 8.4 7.5 – 9.0 Electrical conductivity [μS/cm] (25°C) < 800 < 500 < 70 (HP Chloride ion [mg Cl / l] <... -
Page 19: Electrical Installation
1 s between successive dips. Electric connections Daikin Applied Europe S.p.A. declines all responsibility for an inadequate electrical connection. Only use copper conductors. Failure to use copper conductors could result in overheating or corrosion at connection points and could damage the unit. -
Page 20: Cable Requirements
Particular care must be taken when realizing wire connections to the switchbox; if not properly sealed, cable entries may allow ingress of water into the switchbox which may cause damage to the equipment inside. The power supply to the unit must be set up in such a way that it can be switched on or off independently from th at of other system components and other equipment in general, by means of a general switch. -
Page 21: Operation
OPERATION Operator’s responsibilities It is essential that the operator is appropriately trained and becomes familiar with the system before operating the unit. In addition to reading this manual, the operator must study the microprocessor operating manual and the wiring diag ram in order to understand start-up sequence, operation, shutdown sequence and operation of all the safety devices. - Page 22 Table 2 – Standard Routine Maintenance Plan Weekly Monthly Yearly/ (Note 1) Seasonal List of Activities (Note 2) General: Reading of operating data (Note 3) Visual inspection of unit for any damage and/or loosening Verification of thermal insulation integrity Clean and paint where necessary Analysis of water (6) Check of flow switch operation Electrical:...
- Page 23 Table 3 –Routine Maintenance Plan for Critical Application and/or Highly Aggressive Environment Weekly Monthly Yearly/ List of Activities (Note 8) (Note 1) Seasonal (Note 2) General: Reading of operating data (Note 3) Visual inspection of unit for any damage and/or loosening Verification of thermal insulation integrity Clean Paint where necessary...
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Page 24: Unit Maintenance And Cleaning
Unit Maintenance and Cleaning Unit exposed to a highly aggressive environment can face corrosion in a shorter time than ones installed on a standard environment. Corrosion causes a rapid rusting of the frame core, consequently decreases unit structure life time . To avoid that, it is necessary to wash periodically the frame surfaces with water and suitable detergents. -
Page 25: Important Information Regarding The Refrigerant Used
10 IMPORTANT INFORMATION REGARDING THE REFRIGERANT USED This product contains fluorinated greenhouse gases. Do not vent gases into the atmosphere. Refrigerant type: R134a GWP(1) value: 1430 (1)GWP = Global Warming Potential The refrigerant quantity necessary for standard operation is indicated on the unit name plate. Periodic inspections for refrigerant leaks may be required depending on European or local legislation. -
Page 26: Periodic Checks And Commissioning Of Pressure Equipment
11 PERIODIC CHECKS AND COMMISSIONING OF PRESSURE EQUIPMENT The units are included in category IV of the classification established by the European Directive PED2014/68EU. For chillers belonging to this category, some local regulations require a periodic inspection by an authorized agency. Please check with your local requirements. - Page 27 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 any liability for any direct or indire ct damage, in the broadest sense, arising from or related to the use and/or interpretation of this publication.