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Installation,
maintenance
& operation
manual
EWWQ090G EWWQ720L Water-cooled scroll chillers
EWLQ090G EWLQ720L Condenserless
EWHQ100G EWHQ400G Heat pump scroll chillers
Refrigerant: R410A
D–EIMWC01206-15EN
EWLQ-G/L
Condenserless water
cooled chillers
REV
00
Date
-
Supersedes
-
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Summary of Contents for Daikin EWLQ Series
- Page 1 EWLQ-G/L Condenserless water cooled chillers Installation, maintenance & operation manual EWWQ090G EWWQ720L Water-cooled scroll chillers EWLQ090G EWLQ720L Condenserless EWHQ100G EWHQ400G Heat pump scroll chillers Date Refrigerant: R410A Supersedes D–EIMWC01206-15EN...
- Page 2 Thank you for purchasing this chiller This manual is an important supporting document for qualified personnel but it is not intended to replace such personnel. General Information READ THIS MANUAL CAREFULLY BEFOREINSTALLING AND All the units are delivered, together with wiring STARTING UPTHE UNIT.
- Page 3 Operation In case of doubts contact manufacturer representative. Operation out of the mentioned limits may damage the unit. Figure 1 - Identification of the labels applied to the electric panel (Standard*) Single circuit unit Double circuit unit Identification of the labels 1 –...
- Page 4 Figure 2 - Operating Limits: Water Temperature exiting the Evaporator (°C) A – Operation with Water B - Operation with Glycol + Water Solution – Heat pump unit operating limit Give all necessary information to the rescue Safety The unit must be firmly secured to the soil. operators.
- Page 5 label applied to the electric panel. Lift the unit very Noise slowly, keeping it perfectly level. The noise generated by the unit is mainly due to the Avoid bumping and/or shaking the unit during the rotation of compressors. handling and loading/unloading operations from the The noise level for each model size is listed in sales transportation vehicle, push or pull the unit only using documentation.
- Page 6 Figure 4 - Handling of the double circuit unit Alternative handling method 1 – Remove before installation 2 - Use lifting hooks with closing device exclusively. The hooks must be safely fastened before performing the handling 3 – Fork lift D-EIMWC01206-15EN - 6/20...
- Page 7 Sound protection Insulation of the pipes When sound levels require special control, great care The complete water circuit, including all the pipes, must must be exercised to isolate the unit from its base by be insulated to avoid condensate from forming and appropriately applying anti-vibrating elements.
- Page 8 Circulating Water Possible water supply problems Elements to be checked Corrosion pH at 25°C 6.8~8.0 6.8~8.0 + limescale Electrical Corrosion conductivity <40 <30 + limescale [mS/m] at 25°C Chlorine ion <50 <50 Corrosion [mg Cl˜/l] Sulfate ion <50 <50 Corrosion [mg SO4²˜/l] Alkalinity M Evaporator water entry...
- Page 9 EWWQ180L 5.38 11.21 one hour, there will only be 6 start-ups of the EWWQ205L 6.17 12.86 compressor. EWWQ230L 7.01 14.61 The system where the unit is installed must therefore EWWQ260L 7.82 16.30 ensure that the overall content of water allows the unit t EWWQ290L 8.70 18.13...
- Page 10 Main power supply terminals Main earth terminal The unit must be started for the first time Switch ONLY by DAIKIN authorised personnel. Main insulator switch The unit must absolutely not be started, even for a very On-site wiring short period of time, without having checked it in minute detail filling out the following list at the same time.
- Page 11 sequence, operation, shutdown sequence and Make sure that all the parts of the unit are operation of all the safety devices. pressurized with refrigerant(evaporator, The user must keep a log (system booklet) of the 3 condenser, compressors) before operating data of the unit installed and of all the periodic connecting it to the hydraulic circuit.
- Page 12 Pre-charging the refrigerant when the unit is not These units have been developed and constructed running according to high quality standards ensuring years of Pre-charge the equipment with the quantity of failure-free operation. However, it is important to ensure refrigerant anticipated using the Flare SAE 1/4" stop proper and periodical maintenance in accordance with valve on the filter of the liquid.
- Page 13 Table 1 - Periodic maintenance programme List of Activities Weekly Monthly Annually / Seasonally (Note 1) (Note 2) General: Reading of operating data (Note 3) Visual inspection of machine for any damage and/or loosening Verification of thermal insulation integrity Clean and paint where necessary (Note 4) Analysis of water Check of flow switch operation Electrical:...
- Page 14 refrigerant. Please contact your local dealer for more Oil must be collected and sent to specific refuse information. collection centres. Life of the product The life of our products is 10 (ten) years. Disposal The unit is made of metal, plastic and electronic parts. All these parts must be disposed of in accordance with the national and European laws in effect relative to this substance.
- Page 15 Figure 5 - Wiring for connecting the unit at the place of installation Conditioning Heat Pump Moto-Evaporating Legend Version Version Version Analog Inputs A.R. ON / OFF remote Analog Output Condenser Flow Switch VFD (Variable Frequency Drive) condenser pump VFD 3 Way Valve VFD 3 Way VFD Fans Valve...
- Page 16 Figure A - Typical single refrigerant circuit The input and output of the water of the condenser and the evaporator are approximate. Consult the dimensional drawings of the unit for the exact hydraulic connections.
- Page 17 Figure B - Typical single refrigerant circuit of the moto-evaporating version The input and output of the water of the evaporator are approximate. Consult the dimensional drawings of the unit for the exact hydraulic connections. D-EIMWC01206-15EN - 17/20...
- Page 18 Figure C - Typical single refrigerant circuit for Heat Pump The input and output of the water of the condenser and the evaporator are approximate. Consult the dimensional drawings of the unit for the exact hydraulic connections. D-EIMWC01206-15EN - 18/20...
- Page 19 Legend Compressor Discharge shut off valve Condenser Liquid line isolating valve Drier filter Shut off valve (charge valve) Liquid and humidity indicator Electronic expansion valve Evaporator Suction shut off valve (optional) Low-pressure safety valve High-pressure safety valve Heat recovery Liquid receiver 4 Way valve Refrigerant outlet connection (to the remote...
- Page 20 Spares enquiries call us on: N.V. Daikin Europe N.V. 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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