Daikin EWAD-TZ Installation, Operation And Maintenance Manual
Air cooled chiller with inverter driven screw compressor
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- Operation manual (84 pages) ,
- Installation, operation and maintenance manual (250 pages)
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Summary of Contents for Daikin EWAD-TZ
- Page 1 Inverter Installation, Operation and Maintenance Manual Installation, Operation and Maintenance Manual D–EIMAC00907-16EN Air cooled chiller with inverter driven screw compressor EWAD~TZ Refrigerant: R-134a Original Instructions D–EIMAC00907–16EN - 1/20...
- Page 2 Typical refrigerant circuit - Water inlet and outlet are indicative. Please refer to the machine dimensional diagrams for exact water connections. D–EIMAC00907–16EN - 2/20...
- Page 3 Typical refrigerant circuit with heat recovery - Water inlet and outlet are indicative. Please refer to the machine dimensional diagrams for exact water connections. D-EIMAC00907-16EN - 3/20...
- Page 4 Legend Compressor Evaporator Condenser coil & Axial fan Electronic expansion valve Economizer Dehydration filter Liquid and humidity indicator Sution valve Economizer electronic expansion valve Low-pressure safety valve High-pressure safety valve Heat exchanger (VFD cooling) Heat exchanger (VFD cooling) solenoid valve Discharge shut off valve Liquid line isolating valve ¼”...
- Page 5 This manual is an important supporting document for qualified personnel but it is not intended to replace such personnel. Thank you for purchasing this chiller Receiving the unit READ THIS MANUAL CAREFULLY BEFORE The unit must be inspected for any possible damage INSTALLING AND STARTING UP THE UNIT.
- Page 6 Figure 1 - 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 – Non flammable gas symbol 3 – Hazardous Voltage warning 7 –...
- Page 7 Safety Avoid installing the chiller in areas that could be The unit must be firmly secured to the soil. dangerous during maintenance operations, such as It is essential to observe the following instructions: platforms without parapets or railings or areas not ...
- Page 8 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) Figure 3 – Unit Levelling For installation on the ground, a strong concrete base, at least Before unit commissioning, the flatness must be verified by 250 mm thickness and wider than the unit must be provided.
- Page 9 Vertical air discharge must not be obstructed. Make sure to provide a strong and solid foundation to If the unit is surrounded by walls or obstacles of the same reduce noise and vibrations. height as the unit, this must be installed at a distance no lower Avoid installation in particularly dusty environments, in than 3000 mm.
- Page 10 Chiller N° 3: circuit on the left is working in a over- NOTE: Daikin cannot be considered responsible in case of temperature ambient due to the recirculating air from malfunctions generated by hot air recirculation or insufficient...
- Page 11 possible to the chiller, as in Figs. 6 and 7. If the water Sound protection filter is installed in another part of the water system, the When sound levels require special control, great care must be Installer has to guarantee the cleaning of the water pipes exercised to isolate the unit from its base by appropriately between the water filter and the evaporator.
- Page 12 The flow switch can be installed either on the inlet or outlet Evaporator recovery exchangers anti-freeze water piping. The purpose of the flow switch is to stop the unit protection in the event of interrupted water flow, thus protecting the All evaporators are supplied with a thermostatically controlled evaporator from freezing.
- Page 13 addition to reading this manual, the operator must study the Electrical Installation microprocessor operating manual and the wiring diagram in order to understand start-up sequence, operation, shutdown General specifications sequence and operation of all the safety devices. All electrical connections to the unit must be carried out During the unit’s initial start-up phase, a technician authorized in compliance with laws and regulations in force.
- Page 14 Verify operation of all ventilation fans in the electrical panel Verify operation of inverter cooling valve and heater Verify status of capacitors in the inverter (signs of damage, leaks, etc) Weekly Monthly Yearly/Seas List of Activities (Note 1) Onal (Note 2) Refrigeration circuit: Check for any refrigerant leakage Verify refrigerant flow using the liquid sight glass –...
- Page 15 Unit Maintenance and Cleaning Unit exposed to a highly aggressive environment can face Inverter Electrolytic Capacitors corrosion in a shorter time than ones installed on a standard Compressor Inverters include electrolytic capacitors which environment. Corrosion causes a rapid rusting of the frame have been designed to last a minimum of 15 years in normal core, consequently decreases unit structure life time.
- Page 16 The water used for filling the water circuit must be clean Periodic obligatory checks and starting up of and suitably treated. A mechanical filter must be installed appliances under pressure at the point closest to the evaporator inlet. The units are included in category I → III of the classification Unless there is a specific agreement at the time of established by the European Directive 2014/68/EU (PED).
- Page 17 D-EIMAC00907-16EN - 17/20...
- Page 18 D-EIMAC00907-16EN - 18/20...
- Page 19 D-EIMAC00907-16EN - 19/20...
- Page 20 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.