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Related Manuals for Daikin EWYD 4ZB Series
Summary of Contents for Daikin EWYD 4ZB Series
- Page 1 Public Date 10/2024 Supersedes D–EIMHP01201-18_10EN Installation, Operation and Maintenance Manual D–EIMHP01201-18_11EN Multipurpose unit with Inverter Driven Single Screw Compressor EWYD~4ZB EWYS~4ZB Original instructions...
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Page 2: Table Of Contents
Contents INTRODUCTION ..............................6 Precautions against residual risks ........................6 General Description ............................7 RECEIVING THE UNIT ............................8 OPERATING LIMITS ............................9 Storing Storage ..............................9 Operating limits Air to Water operation ......................9 Operating limits Water to Water operation (Recovery Mode) ................. 10 MECHANICAL INSTALLATION ......................... -
Page 3: Fig. 1 - Ewyd-4Z / Ewys-4Z Typical Refrigerant Circuit
Fig. 1 - EWYD-4Z / EWYS-4Z Typical refrigerant circuit Water inlet and outlet are indicative. Please refer to the machine dimensional diagrams for exact water connections. D–EIMHP01201-18_11EN- 3/34... - Page 4 LEGEND EQUIPMENTS INSTRUMENTS SCREW COMPRESSOR VFD PRESSURE TRANSDUCER 4-WAY VALVE (4WV) HIGH PRESSURE SWITCH 22.7 bar FLANGED CHECK VALVE HIGH TEMPERATURE SWITCH (MOTOR TZAH THERMISTOR) FINS&TUBES HEAT EXCHANGER LOW PRESSURE LIMITER (CONTROLLER LIQUID RECEIVER PSAL FUNCTION) FILTER DRIER TEMPERATURE TRANSDUCER HEAT EXCHANGER (BOHE)-ECONOMIZER FLOWSWITCH HEAT EXCHANGER (S&T)-COLD WATER...
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Page 5: Fig. 2 - Description Of Labels Applied To The Electrical Panel
Fig. 2 - Description of labels applied to the electrical panel Single circuit unit Double circuits unit Label Identification 1 – Manufacturer’s logo 5 – Cable tightening warning 2 – Gas type 6 – Non flammable gas symbol 3 – Hazardous Voltage warning 7 –... -
Page 6: 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 7: General Description
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. Do not use naked flames near the unit. 30. -
Page 8: Receiving The Unit
Unit restitution 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 machine may suffer during transport to the destination. Use extreme caution when handling the unit to prevent damage to components. -
Page 9: Operating Limits
OPERATING LIMITS Storing Storage Environmental conditions must be within the following limits: Minimum ambient temperature -20°C Maximum ambient temperature 57°C Maximum R.H. 95% not condensing Storing below the minimum temperature may cause damage to components. Storing above the maximum temperature causes opening of safety valves. -
Page 10: Operating Limits Water To Water Operation (Recovery Mode)
Note: • The above graph refers to the unit operating extended envelope. Unit may be able to operate within the above envelope with compressors unloading. Please contact factory for further details. • For operation with temperature at the outlet of the cold heat exchanger below +4°C, the unit must operate with glycol mixture (ethylene or propylene glycol). -
Page 11: Mechanical Installation
MECHANICAL INSTALLATION Safety The unit must be firmly secured to the soil. It is essential to observe the following instructions: − The unit can only be lifted using the lifting points marked in yellow fixed to its base. − It is forbidden to access the electrical components without having opened the unit main switch and switched off the power supply. -
Page 12: Noise And Sound Protection
High pressure switch → safety accessory. External relief valve (refrigerant side) → over pressure protection. External relief valve (heat transfer fluid side) → The selection of these relief valves must be made by the personnel responsible for completing the hydraulic circuit(s). All factory-installed relief valves are lead-sealed to prevent any calibration change. -
Page 13: Fig. 3 - Lifting
Fig. 3 - Lifting Unit with 4 lifting points (The drawing shows only the 6 fans version. For the 4 fans version the lifting mode is the same) Unit with 6 lifting points (The drawing shows only the 12 fans version. The lifting mode is the same for the different number of fans) Unit with 8 lifting points D–EIMHP01201-18_11EN - 13/34... - Page 14 D–EIMHP01201-18_11EN - 14/34...
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Page 15: Minimum Space Requirements
Fig. 4 - Unit Levelling For installation on the ground, a strong concrete base, at least 250 mm thickness and wider than the unit must be provided. This base must be able to support the weight of the unit. The unit must be installed above antivibrating mounts (AVM), rubber or spring types. The unit frame must be perfectly levelled above the AVM. -
Page 16: Fig. 5 - Minimum Clearance Requirements For Machine Maintenance
When two or more machines are positioned side by side, a distance of at least 3600 mm between the respective condenser banks is recommended. For further solutions, please consult Daikin technicians. Fig. 5 - Minimum clearance requirements for machine maintenance... -
Page 17: Fig. 6 - Multiple Chiller Installation
The minimum distances, reported above, ensure functionality of the unit in most applications. However, there are specific situations which include multiple unit installations: in this case the following recommendations have to be followed: Multiple unit installed side by side in a free field with dominant wind. Considering an installation in areas with a dominant wind from a specific direction (as shown in the Fig.6): •... -
Page 18: Water Piping
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 19: Evaporator And Condenser Exchangers Anti-Freeze Protection
of corrosion, erosion, scaling, etc.. The most appropriate water treatment must be determined locally, according to the type of system and water characteristics. The manufacturer is not responsible for damage to or malfunctioning of equipment caused by failure to treat water or by improperly treated water. -
Page 20: Minimum System Water Volume (For Cold And Hot Side)
Fig. 7 - Water piping connection Single pump Twin pump Drain ½ ‘’ NPT Temperature sensor Temperature switch Automatic filling valve Pressure gauge Plugged fitting¼’’ NPT Flowswitch Safety valve 10 BAR 1/2 ‘’ G Electrical heater ¾’’ G 100 W 230 V Water filter 4.10 Minimum system water volume (for Cold and Hot side) -
Page 21: Electrical Installation
Provide an electrical circuit to connect the unit. It must be connected to the copper cables with an adequate section relative to the plate absorption values and according to the current electrical standards. Daikin Applied Europe S.p.A. declines all responsibility for an inadequate electrical connection. The connections to the terminals must be made with copper terminals and cables, otherwise overheating or corrosion may occur at the connection points with the risk of damaging the unit. -
Page 22: Cable Requirements
The electrical connection of the panel must be carried out maintaining the correct sequence of the phases. Refer to the specific wiring diagram for the unit you have bought. Should the wiring diagram not be on the unit or should it have been lost, please contact your manufacturer representative, who will send you a copy. -
Page 23: Phase Unbalance
5.3.2 Phase unbalance In a three-phase system, the excessive imbalance between the phases is the cause of the engine overheating. The maximum permitted voltage unbalance is 3%, calculated as follows: ( ���� − ���� ) ∗ 100 ���������������������������� % = ����... -
Page 24: 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 diagram to understand start-up sequence, operation, shutdown sequence and operation of all the safety devices. -
Page 25: Maintenance
MAINTENANCE Routine maintenance This unit must be maintained by qualified technicians. Before beginning any work on the system the personnel shall assure that all security precautions have been taken. Neglecting unit maintenance in these environments, could degrade all parts of the units (coils, compressors, frames, pipes, etc..) with negative effect on performances and functionality. - Page 26 Table 4 - Standard Routine Maintenance Plan Yearly/ Monthly List of Activities Weekly Seasonal (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 Clean and paint where necessary Analysis of water (6) Check of flow switch operation Electrical:...
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Page 27: Unit Maintenance And Cleaning
Table 5 –Routine Maintenance Plan for Critical Application and/or Highly Aggressive Environment Yearly/ Monthly List of Activities (Note 8) Weekly Seasonal (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 Clean Paint where necessary... -
Page 28: Inverter Electrolytic Capacitors
The refrigerant charge must be adjusted in water to water operation (Recovery mode) in order to avoid flashing at sight glass on the liquid line Inverter Electrolytic Capacitors Compressor Inverters include electrolytic capacitors which have been designed to last a minimum of 15 years in normal use. -
Page 29: Service And Limited Warranty
SERVICE AND LIMITED WARRANTY All units are factory-tested and guaranteed for 12 months as of the first start-up or 18 months as of delivery. These units have been developed and constructed according to high quality standards ensuring years of failure-free operation. -
Page 30: 10 First Start-Up Checks
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–EIMHP01201-18_11EN - 30/34... -
Page 31: 11 Duration
11 DURATION The useful life of this unit is 10 (ten) years. After this period the manufacturer advises to carry out a total control of the whole and above all the integrity check of the pressurized refrigeration circuits, as required by the laws in force in some European Community countries. D–EIMHP01201-18_11EN - 31/34... -
Page 32: 12 Disposal
12 DISPOSAL The unit is made of metal, plastic and electronic parts. All of these components must be disposed of in accordance with local disposal laws and if in scope with the national laws implementing the Directive 2012/19/EU (RAEE). Lead batteries must be collected and sent to specific waste collection centers. Avoid the escape of refrigerant gases into the environment by using suitable pressure vessels and tools for transferring the fluids under pressure. -
Page 33: 13 Important Information Regarding The Refrigerant Used
13 IMPORTANT INFORMATION REGARDING THE REFRIGERANT USED This product contains fluorinated greenhouse gases. Do not vent gases into the atmosphere. Refrigerant type: R134a (EWYD-4Z) ; R513A (EWYS~4ZA) GWP(1) value: 1430;631 (1)GWP = global warming potential 13.1 Factory And Field Charged Units Instructions The refrigerant system will be charged with fluorinated greenhouse gases, and the factory charge(s) are recordered on the label, shown below, which is adhered inside the electrical panel. - Page 34 The present publication is drawn up by of information only and does not constitute an offer binding upon Daikin Applied Europe S.p.A.. Daikin Applied Europe S.p.A. has compiled the content of this publication to the best of its knowledge. No express or implied warranty is given for the completeness, accuracy, reliability or fitness for particular purpose of its content, and the products and services presented therein.
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