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Related Manuals for Daikin EWAT_B Series
Summary of Contents for Daikin EWAT_B Series
- Page 1 Date June 2018 Supersedes Installation, Maintenance and Operation Manual D-EIMAC01706-18EN Air-cooled refrigeration units with scroll compressors EWAT_B Cooling capacity from 76 to 701 kW 50Hz - Refrigerant: R32 Original instructions...
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Page 2: Table Of Contents
Contents INTRODUCTION ..............................3 General description ............................... 3 Information on the refrigerant used ........................3 Usage ................................... 4 Installation information ............................4 1.4.1 Additional guidelines for using equipment with R32 installed outdoors ..........4 1.4.2 Additional guidelines for using equipment with R32 installed in engine rooms ........4 INSTALLATION .............................. -
Page 3: 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 DOC (Declaration Of Conformity); these documents show all technical data for the unit you have bought. -
Page 4: Usage
EWAT_B units are designed and built for cooling buildings or industrial processes. The first commissioning on the final plant must be carried out by Daikin technicians, specifically trained for this purpose. Failure to follow this start-up procedure affects the warranty of the supply. - Page 5 Machinery rooms shall have doors opening outward and sufficient in number to ensure freedom for persons to escape in an emergency; the doors shall be tight fitting, self-closing and so designed that they can be opened from inside (antipanic system). ...
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Page 6: Installation
The restitution of the machinery is intended as ex-factory Daikin Applied Europe S.p.A. Daikin Applied Europe S.p.A. declines all responsibility for any damage that the machinery may suffer during transport to the destination. Use extreme caution when handling the unit to prevent damage to components. -
Page 7: List Of Figures Fig. 1- Lifting Instructions
Unit with 4 lifting points The drawing shows only the 6 fans version. The lifting mode is the same regardless of the number of fans Unit with 6 lifting points The drawing shows only the 10 fans version. The lifting mode is the same regardless of the number of fans. Fig. -
Page 8: Positioning And Assembly
Consult the dimensional drawing for the hydraulic and electrical connection of the units. The overall dimensions of the machine, as well as the weights described in this manual, are purely indicative. The contractual dimensional drawing and the related electrical scheme are delivered to the customer when ordering. -
Page 9: Minimum Space Requirements
Fig. 2 - Unit levelling Minimum space requirements It is fundamental to respect minimum distances on all units in order to ensure optimum ventilation to the condenser coils. When deciding where to position the unit and to ensure a proper air flow, the following factors must be taken into consideration: ... -
Page 10: Fig. 3 - Minimum Space Requirements
If h<Hc→ L≥ 3,0 m (multi V) / L≥ 1,8 m (single V); if h>Hc or L is lower then recommended contact your Daikin distributor to evaluate the various possible arrangements. Fig. 3 - Minimum space requirements The minimum distances, reported above, ensure functionality of the chiller in most applications. However, there are specific situations which include multiple chiller installation;... -
Page 11: Noise And Sound Protection
Fig. 4 – Multiple Chiller Installation Noise and sound protection The unit is a source of noise mainly due to rotation of compressors and fans. The noise level for each model size is listed in sales documentation. If the unit is correctly installed, operated and maintained the noise emission level do not require any special protection device to operate continuously close to the unit without any risk. -
Page 12: Water Circuit For The Connection Of The Unit
Water circuit for the connection of the unit 2.8.1 Water piping Piping must be designed with the lowest number of elbows and the lowest number of vertical changes of direction. In this way, installation costs are reduced considerably and system performance is improved. The water system must have: 1. -
Page 13: Fig. 5 - Hydraulic Diagram Without Pump(S) On Board
Fig. 5 – Hydraulic diagram without pump(s) on board (max. operating pressure 20 bar) Fig. 6– Hydraulic diagram with pump(s) on board (opt. 78÷81) (max. operating pressure 6 bar) Fig. 7 - Hydraulic scheme with hydronic kit (opt.134÷137) (max. operating pressure 6 bar) Legend BPHE Plate heat exchanger... -
Page 14: Water Treatment
Water treatment Before putting the unit into operation, clean the water circuit. The evaporator must not be exposed to flushing velocities or debris released during flushing. It is recommended that a suitably sized bypass and valve arrangement is installed to allow flushing of the piping system. The bypass can be used during maintenance to isolate the heat exchanger without disrupting flow to other units. -
Page 15: Fig. 9 - Multi V-Gold Operational Limits
Fig. 9 - Multi V-Gold Operational limits Amb T Ambient air temperature ELWT Evaporator leaving water temperature Ref 1 Operation with ELWT <4 ° C requires option 08 (brine) and glycol Ref 2 Operation at ambient temperatures <10 ° C requires option 99 (fan speed modulation) or option 42 (Speedtroll) Ref 3 Units with the "Reduced noise"... -
Page 16: Fig. 10 - Single V-Silver Operational Limits
Fig. 10 - Single V-Silver Operational limits Fig. 11 - Single V-Gold Operational limits Amb T Ambient air temperature Evaporator leaving water temperature ELWT Ref 1 Operation with ELWT <4 ° C requires option 08 (brine) and glycol Ref 2 Operation at ambient temperatures <10 °... -
Page 17: Operating Stability And Minimum Water Content In The System
The charts shown above constitute a guideline on operating limits in the range. Refer to the CSS selection software for the actual operating limits in the working conditions for each model. Table 2 - Evaporator - Fouling factor Legend: A = Fouling factor (m °C / kW) B = Correction factor of the cooling capacity C = Correction factor of the absorbed power... -
Page 18: Anti-Freeze Protection For Evaporator And Recovery Exchangers
Make sure that appropriate anti-freeze protection is maintained at all times. Failing to follow the instructions above could result in unit damage. Damage caused by freezing is excluded from the warranty, therefore Daikin Applied Europe S.p.A declines all responsibility Electric connections Provide an electrical circuit to connect the unit. -
Page 19: Cable Requirements
Simultaneous single and three-phase loads and phase unbalance can cause ground losses of up to 150 mA during normal unit operation. If the unit includes devices that generate higher harmonics, such as an inverter or phase cut, ground losses can increase to much higher values, about 2 A. The protections for the power supply system must be designed according to the values mentioned above. -
Page 20: Operator's Reponsibilities
OPERATOR'S REPONSIBILITIES 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 diagram in order to understand start-up sequence, operation, shutdown sequence and operation of all the safety devices. -
Page 21: Maintenance
MAINTENANCE Personel working on the electrical or the refrigeration components must be authorized, trained and fully qualified. Maintenance and repair requiring the assistance of other skilled personnel should be carried out under the supervision of the person competent in the use of flammable refrigerants. Any person conducting servicing or maintenance on a system or associated parts of the equipment should be competent according to EN 13313. -
Page 22: Pressure / Temperature Table
Pressure / temperature table Table 6 - Pressure / Temperature of the R32 °C °C °C °C 2.97 7.62 16.45 31.41 3.22 8.13 17.35 32.89 3.48 8.67 18.30 34.42 3.76 9.23 19.28 36.00 4.06 9.81 20.29 37.64 4.37 10.43 21.35 39.33 4.71 11.07... -
Page 23: Electrical Installation
Rinse. Do not use any chemicals (including those advertised as coil cleaners) to wash microchannel heat exchangers. They can cause corrosion. Rinse only. Hose the MCHE off gently, preferably from the inside out and top to bottom, running the water through every fin passage until it comes out clean. Microchannels fins are stronger than traditional tube &... -
Page 24: Table 7 - Standard Routine Maintenance Plan
Table 7 – Standard Routine Maintenance Plan List of Activities Weekly Monthly Annual/ (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 and paint where necessary Analysis of water (4) Check of flow switch operation Electrical Installation:... -
Page 25: Table 8 -Routine Maintenance Plan For Critical Application And/Or Highly Aggressive Environment
Table 8 –Routine Maintenance Plan for Critical Application and/or Highly Aggressive Environment List of Activities (Note 8) Weekly Monthly Yearly/Seas onal (Note 1) (Note 2) General: Reading of operating data (Note 3) Visual inspection of unit for any damage and/or loosening Verification of thermal insulation integrity Cleaning Paint where necessary... -
Page 26: Fig. 12 - Refrigerant Circuit Diagram (P & Id) Single Circuit Unit
Fig. 12 - Refrigerant circuit diagram (P & ID) single circuit unit Water inlet and outlet are indicative. Please refer to the machine dimensional diagrams for exact water connections. D-EIMAC01706-18EN- 26/32... -
Page 27: Fig. 13 - Refrigerant Circuit Diagram (P & Id) Double Circuit Unit
Fig. 13 - Refrigerant circuit diagram (P & ID) double circuit unit Water inlet and outlet are indicative. Please refer to the machine dimensional diagrams for exact water connections. D-EIMAC01706-18EN - 27/32... -
Page 28: Fig. 14 - Description Of Labels Applied On The Electrical Panel
Legend Item Description Scroll compressors in tandem configuration Microchannel air condenser Angle valve Filter Liquid sight-glass (if not present with 6) Electronic expansion valve BPHE evaporator Low Pressure Safety valve Pt = 24.5 barg High Pressure Safety valve Pt = 45 barg Charge coupling Plate heat exchanger-Heat recovery (optional) Plate heat exchanger-Subcooler (optional) -
Page 29: Checks For The First Start-Up
Provide the main voltage and check that it is within ± 10% of the classification given on the nameplate. Note This list must be completed and sent to the local Daikin Service office at least two weeks before the start date. D-EIMAC01706-18EN - 29/32... -
Page 30: Important Information On The Refrigerant Used
IMPORTANT INFORMATION ON THE REFRIGERANT USED This product contains fluorinated greenhouse gases. Do not vent gases into the atmosphere. Refrigerant type: GWP Value (global warming potential): Factory and Field charged units instructions The refrigerant system is charged with fluorinated greenhouse gases and the refrigerant charge is impressed on the plate, shown below, which is applied inside the electrical panel. -
Page 31: Periodic Checks And Commissioning Of Pressure Equipment
PERIODIC CHECKS AND COMMISSIONING OF PRESSURE EQUIPMENT The units are included in category III and IV of the classification established by the European Directive 2014/68/EU (PED). For chillers belonging to these categories, some local regulations require a periodic inspection by an authorized person. Please check with your local requirements. - Page 32 The present publication is drawn up only for technical support and it does not constitute a binding commitment for Daikin Applied Europe S.p.A. Its content has been written by Daikin Applied Europe S.p.A. to the best of its knowledge. No explicit or implied warranty is given for the completeness, accuracy, reliability of its contents.