Related Manuals for Daikin EWLQ025KCW1N
Summary of Contents for Daikin EWLQ025KCW1N
- Page 1 Date 07/2022 Supersedes D-EIMHP01601-22_00EN Installation, Operation and Maintenance Manual D-EIMHP01601-22_01EN CONDENSERLESS WATER-COOLED HEAT PUMPS EWLQ014KCW1N EWLQ025KCW1N EWLQ033KCW1N EWLQ049KCW1N EWLQ064KCW1N...
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Page 2: Table Of Contents
Index INTRODUCTION ............................ 4 Options and features (1)....................... 5 Features ............................5 OPERATION RANGE ..........................6 SELECTION OF LOCATION ......................... 7 MAIN COMPONENTS..........................7 INSPECTING AND HANDLING THE UNIT .................... 7 UNPACKING AND PLACING THE UNIT ....................7 IMPORTANT INFORMATION REGARDING THE REFRIGERANT USED ..........7 SELECTION OF PIPING MATERIAL ..................... - Page 3 Improper installation or attachment of equipment or accessories could result in electric shock, short- circuit, leaks, fire or other damage to the equipment. Be sure only to use accessories, optional equipment and spare parts made by Daikin which are specifically designed for use with the equipment and have them installed by a professional.
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Page 4: Table 1-Technical Specifications
Pay attention to the selection of your remote condenser. Make sure to select a remote condenser developed for use with R410A. The EWLQ units can be combined with Daikin fan coil units or air handling units for air conditioning purposes. They can also be used for supplying chilled water for process cooling. - Page 5 • Low noise operation kit (field installation) • Entering water temperature kit • Master/slave water temperature kit • Modem for Daikin On Site Features • Glycol application for chilled water temperature down to -10°C • Voltage free contacts general operation alarm •...
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Page 6: Operation Range
OPERATION RANGE Figure 1- Operation range EWLQ014-033KC Figure 2-EWLQ049-064KC • ELWT: Evaporator leaving water temperature • Tc: Saturated condensing temperature • 1: Operation with water • 2: Operation with glycol (below ELWT=4°C) D-EIMHP01601-22_01EN 6/26... -
Page 7: Selection Of Location
SELECTION OF LOCATION The units are designed for indoor installation and should be installed in a location that meets the following requirements: The foundation is strong enough to support the weight of the unit and the floor is flat to prevent vibration and noise generation. - Page 8 Please fill in with indelible ink, ▪ the total refrigerant charge ▪ (1) GWP = global warming potential D-EIMHP01601-22_01EN 8/26...
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Page 9: Selection Of Piping Material
SELECTION OF PIPING MATERIAL 1. Foreign materials inside pipes (including oils for fabrication) must be 30 mg/10 m or less. 2. Use the following material specification for refrigerant piping: - construction material: Phosphoric acid deoxidized seamless copper for refrigerant. - size: Determine the proper size referring to "Technical specifications”. - the pipe thickness of the refrigerant piping must comply with relevant local and national regulations. -
Page 10: Connecting The Refrigerant Circuit
CONNECTING THE REFRIGERANT CIRCUIT The units are equipped with a refrigerant outlet (discharge side) and a refrigerant inlet (liquid side) for the connection to a remote condenser. This circuit must be provided by a licensed technician and must comply with all relevant European and national regulations. Precautions when handling piping If air, moisture or dust gets in the refrigerant circuit, problems may occur. -
Page 11: Table 3- Flare Nut Spaces Dimensions And Appropriate Tightening Torque
• Vacuum pump (use a 2-stage vacuum pump with a non-return valve): - Make sure the pump oil does not flow oppositely into the system while the pump is not working. - Use a vacuum pump which can evacuate to –100.7 kPa (5 Torr, –755 mm Hg). •... -
Page 12: Leak Test And Vacuum Drying
Leak test and vacuum drying The units were checked for leaks by the manufacturer. After connection of the piping, a leak test must be performed and the air in the refrigerant piping must be evacuated to a value of 4 mbars absolute by means of a vacuum pump. Open the discharge- and liquid stop valves. - Page 13 Take care for contamination of the remote condenser in order to avoid blocking of the system. It is impossible for Daikin to control the contamination of the "foreign" condenser of the installer. The Daikin unit has a strict contamination level.
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Page 14: Checking The Water Circuit
CHECKING THE WATER CIRCUIT The units are equipped with a water inlet and water outlet for connection to a chilled water circuit. This circuit must be provided by a licensed technician and must comply with all relevant European and national regulations. The unit is only to be used in a closed water system. -
Page 15: Connecting The Water Circuit
A flow switch must be installed in the water outlet pipe of the evaporator to prevent the unit from operating at a water flow which is too low. It is very important to install the flow switch as shown in the figure. Observe the position of the flow switch in relation to the direction of the water flow. -
Page 16: Water Charge, Flow And Quality
Make sure that appropriate antifreeze protection is always maintained. Failing to follow the instructions above could result in unit damage. Damage caused by freezing is excluded from the warranty, therefore Daikin Applied Europe S.p.A. declines all responsibility. D-EIMHP01601-22_01EN 16/26... -
Page 17: Field Wiring
FIELD WIRING All field wiring and components must be installed by a licensed electrician and must comply with relevant European and national regulations. The field wiring must be carried out in accordance with the wiring diagram supplied with the unit and the instructions given below. Be sure to use a dedicated power circuit. -
Page 18: Operator's Reponsibilities
OPERATOR’S REPONSIBILITIES 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 19: Routine Maintenance
MAINTENANCE Table 8-R410A Pressure / temperature table °C °C °C 5.22 12.30 24.95 5.41 12.65 25.56 5.60 13.02 26.18 5.79 13.39 26.81 6.00 13.77 27.45 6.20 14.15 28.10 6.42 14.55 28.77 6.63 14.95 29.44 6.86 15.37 30.13 7.09 15.79 30.84 7.32 16.22 31.55... -
Page 20: Maintenance
the current absorbed by the compressor must be compared to the rated value. Normally the value of the absorbed current is lower than the rated value that corresponds to the absorption of the full load compressor at the maximum operating conditions. -
Page 21: Table 10- Routine Maintenance Plan For Critical Application And/Or Highly Aggressive Environment
efficiency means that the heat exchangers are clogged. In environments with a high concentration of airborne particles, it might be necessary to clean the condenser bank more often. Units placed or stored in a Highly Aggressive Environment for long time without operation are still subject to those routine maintenance steps. Table 10- Routine Maintenance Plan for Critical Application and/or Highly Aggressive Environment Monthly Yearly/Seasonal List of Activities (Note 8) -
Page 22: Figure 11- Ewlq 014 - 033 Kcw1N Refrigerant Circuit Scheme
Figure 11- EWLQ 014 - 033 KCW1N Refrigerant circuit scheme Figure 12- EWLQ 049 - 064 KCW1N Refrigerant circuit scheme LEGEND Compressor Compressor-Condenser Condenser (BPHE) L1-1 Condenser-Therm.Exp. Valve Drier filter L1-2 Therm.Exp Valve-Evaporator Thermostatic expansion valve Evaporator-Compressor Evaporator (BPHE) S1-1 Evaporator-Accumulator Ball valve (optional) S1-2... -
Page 23: Before Starting
BEFORE STARTING The unit should not be started, not even for a very short period, before the following pre- commissioning checklist is filled out completely. Table 11-Pre-commissioning checklist Tick/when Standard stops to go through before starting the unit checked Check for external damage. Install main fuses, earth leak detector and main switch. - Page 24 NOTES D-EIMHP01601-22_01EN 24/26...
- Page 25 D-EIMHP01601-22_01EN 25/26...
- Page 26 All the data and specifications contained herein are liable to change without notice. Refer to the data communicated at the time of the order. Daikin Applied Europe S.p.A. cannot be held liable for direct or indirect damage, in the broadest sense of the term, arising from or related to the use and/or interpretation of thi s publication.