Related Manuals for Daikin EWYD-4ZB
Summary of Contents for Daikin EWYD-4ZB
- Page 1 Date 11/2021 Supersedes D–EIMHP01201-18_05EN Installation, Operation and Maintenance Manual D–EIMHP01201-18_06EN Multipurpose unit with Inverter Driven Single Screw Compressor EWYD~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 ..............................7 OPERATING LIMITS ............................8 Storing Storage ..............................8 Operating limits Air to Water operation ......................... 8 Operating limits Water to Water operation (Recovery Mode) ................9 MECHANICAL INSTALLATION ......................... -
Page 3: List Of Figures Fig. 1- Typical Refrigerant Circuit
Fig. 1- Typical refrigerant circuit Water inlet and outlet are indicative. Please refer to the machine dimensional diagrams for exact water connections. D–EIMHP01201-18_06EN- 3/27... - Page 4 LEGEND EQUIPMENTS & INSTRUMENTS ELECTRONIC EXPANSION VALVES (EXV) SCREW COMPRESSOR VFD EXV SHELL&TUBE HEAT EXCHANGER - COLD WATER 4-WAY VALVE (4WV) EXV SHELL&TUBE HEAT EXCHANGER - HOT TZAH MOTOR THERMISTOR (140°C) WATER HIGH PRESSURE SWITCH (21,5 PZAH bar) EXV ECONOMIZER EXV DEFROST PRESSURE TRANSDUCER SOLENOID VALVES (SV)
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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
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. the machinery must be installed in structures protected against atmospheric discharge according to the applicable laws and technical standards 31. -
Page 8: 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 9: Operating Limits Water To Water Operation (Recovery Mode)
The following options must be included according to the specific operating area: Ref. area 1: standard unit (no options are required to operate in this area) Ref. area 2: standard unit - opt. 08 (Brine) (unit may not unload to minimum load) Ref. -
Page 10: 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 11: Positioning And Assembly
Positioning and assembly All units are designed for installation outdoors, either on balconies or on the ground, provided that the installation area is free of obstacles that could reduce air flow to the condensers coil. The unit must be installed on a robust and perfectly level foundation; should the unit be installed on balconies or roofs, it might be necessary to use weight distribution beams. - Page 12 Unit with 8 lifting points D–EIMHP01201-18_06EN - 12/27...
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Page 13: Fig. 4 - Unit Levelling
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 14: Minimum Space Requirements
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 15: 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 16: 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 17: Water Treatment
the unit, as in Fig. 7. If the water filter is installed in another part of the water system, the Installer has to guarantee the cleaning of the water pipes between the water filter and the evaporator. 9. Recommended maximum opening for strainer mesh is: •... -
Page 18: Installing The Flow Switch
− Emptying and cleaning of the heat exchanger during the winter season It is the responsibility of the installer and/or of local maintenance personnel to ensure that described anti-freeze methods are used. Make sure that appropriate anti-freeze protection is maintained at all times. Failing to follow the instructions above could result in unit damage. -
Page 19: Electric Connections
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 20: Phase Unbalance
Table 1 - Table 1 of EN60204-1 Point 5.2 Section of the copper Minimum cross-section phase conductors of the external copper feeding protection conductor the equipment Sp [mm S [mm S ≤ 16 16 < S ≤ 35 S > 35 3.11.2 Phase unbalance In a three-phase system, the excessive imbalance between the phases is the cause of the engine overheating. -
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 diagram 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/Seas List of Activities (Note 1) Onal (Note 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 23: Unit Maintenance And Cleaning
Table 3 –Routine Maintenance Plan for Critical Application and/or Highly Aggressive Environment Weekly Monthly Yearly/Seas List of Activities (Note 8) (Note 1) Onal (Note 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 24: Refrigerant Charge Verification
Refrigerant charge verification The multiporpouse units are design to operate in extremely variable conditions and modes (air to water ans water to water). The refirgerant charge indicated on the name plate has been approved by the manufacturer allowing the unit to operate within the declared operating envelope. -
Page 25: 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 26: 10 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 10.1 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 27 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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