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Summary of Contents for Daikin EWAD MZ B Series
- Page 1 Date 01/2023 Supersedes D–EIMAC01304-17_02EN Installation, Operation and Maintenance Manual Installation, Operation and Maintenance Manual D–EIMAC01304-17_03EN Air cooled chiller with inverter driven screw compressor EWAD~MZ~B EWAD~MZ~C Original Instructions...
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Page 2: Table Of Contents
CONTENTS INTRODUCTION..............................6 Precautions against residual risks .......................... 6 Description ................................7 Information about installation ..........................7 RECEIVING THE UNIT ............................9 OPERATING LIMITS ............................9 Storing Storage ............................... 9 Operation ................................9 MECHANICAL INSTALLATION ........................10 Safety ..................................10 4.1.1 Safety devices ............................. -
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. Optional Safety valves can be provided Note A: for F4ALVVR with a changeover device as compressors, L16 on 19 optional instead of L15. - Page 4 LEGEND DESCRIPTION SCREW COMPRESSOR HEAT EXCHANGER (BHPE) - HEAT RECOVERY OPTIONAL PRESSURE RELIEF VALVE Pset = 25.5 bar MICROCHANNEL CONDENSER COIL ANGLE VALVE DRIER FILTER MOISTURE SIGHT GLASS HEAT EXCHANGER (BPHE) ECONOMIZER SOLENOID VALVE (inside compressor) ECONOMIZER ELECTRONIC EXPANSION VALVE ELECTRONIC EXPANSION VALVE SHELL&TUBES EVAPORATOR PRESSURE RELIEF VALVE Pset = 15.5 bar...
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Page 5: Figure 2 - Description Of The Labels Applied To The Electrical Panel
Figure 2 - Description of the 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 – Transportation Label UN 2857 3 – Hazardous Voltage warning 7 –... -
Page 6: Introduction
INTRODUCTION This manual is an important supporting document for qualified personnel but it is not intended to replace such personnel. READ THIS MANUAL CAREFULLY BEFORE INSTALLING AND STARTING UP THE UNIT. IMPROPER INSTALLATION COULD RESULT IN ELECTRIC SHOCK, SHORT-CIRCUIT, LEAKS, FIRE OR OTHER DAMAGE TO THE EQUIPMENT OR INJURE TO PEOPLE. -
Page 7: Description
34. during transport, always secure the unit to the bed of the vehicle to prevent it from moving about and overturning 35. the machine must be transported according to the regulations in force taking into account the characteristics of the fluids in the machine and the description of these on the safety data sheet 36. - Page 8 • 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 9: Receiving The Unit
RECEIVING THE UNIT The unit must be inspected for any possible damage immediately upon reaching final place of installation. All components described in the delivery note must be inspected and checked. Should the unit be damaged, do not remove the damaged material and immediately report the damage to the transportation company and request they inspect the unit.. -
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: Safety Devices
4.1.1 Safety devices In accordance with the Pressure Equipment Directive the following protection devices are used: 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). -
Page 12: Figure 3- Lifting
Figure 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) D–EIMAC01603–17_03EN - 12/29... - Page 13 Unit with 8 lifting point D-EIMAC01603-17_03EN - 13/29...
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Page 14: Minimum Space Requirements
Figure 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 15: Figure 5- Minimum Clearance Requirements
1500 mm for single circuit units; d= 3000/3500 mm (according to evaporator dimensions) for dual circuit units If h<Hc=2,4 m, minimum L=3,0 m; if h>Hc or L< 3,0 m contact your Daikin distributor to evaluate the various possible arrangements The minimum distances, reported above, ensure functionality of the chiller in most applications. -
Page 16: Figure 6 - Multiple Chiller Installation
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: 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 18: Evaporator And Recovery Exchangers Anti-Freeze Protection
Sulphate ion [mg SO / l] < 100 < 100 Alkalinity [mg CaCO / l] < 100 < 200 Total Hardness [mg CaCO / l] < 200 75 ÷ 150 Iron [mg Fe / l] < 1 < 0.2 Ammonium ion [mg NH / l] <... -
Page 19: Figure 8 - Water Piping Connection For Heat Recovery Exchangers
AIR VENT DRAIN WATER FILTER TEMPERATURE SENSOR TEMPERATURE SWITCH PRESSURE GAUGE FLOWSWITCH Figure 8 - Water piping connection for heat recovery exchangers Pressure Gauge Isolation Valve Flexible connector Pump Temperature probe Filter D–EIMAC01603–17_03EN - 19/29... -
Page 20: 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 21: Cable Requirements
The power supply to the unit must be set up in such a way that it can be switched on or off independently from that of other system components and other equipment in general, by means of a general switch. The electrical connection of the panel must be carried out maintaining the correct sequence of the phases. -
Page 22: 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 23: Maintenance
MAINTENANCE Routine maintenance This chiller must be maintained by qualified technicians. Before beginning any work on the system the personnel shall assure that all security precautions have been taken. 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. - Page 24 There are two different levels of maintenance, which can be chosen according to the type of application (critical/non critical) or to the installation environment (highly aggressive). Examples of critical applications are process cooling, data centres, etc. Highly Aggressive Environments can be defined as the follows: •...
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Page 25: 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 26: Inverter Electrolytic Capacitors
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 27: 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 28: Important Information Regarding The Refrigerant Used
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 29 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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