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Daikin EWLD420I-SS Брошюра онлайн [12/36] 529426
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12
TECHNICAL SPECIFICATIONS 850 900 950 C10
Capacity (1) kW 850 919 966 1033
---
% 12.5 12.5 12.5 8.3
Unit power input (1) kW 231 252 271 279
--- 3.67 3.65 3.56 3.59
---
---
Height mm 2325 2325 2325 2415
Width mm 1464 1464 1464 2135
Length mm 4391 4391 4391 4426
kg 3364 3412 3412 5146
kg 3605 3645 3645 5667
---
l 241 233 233 504
Cooling l/s 40.61 43.91 46.15 49.35
Cooling kPa 47 45 45 52
---
l32323248
No.2223
Cooling dB(A) 99.8 99.8 99.8 100.4
Cooling dB(A) 80.7 80.7 80.7 80.4
--- R-134a R-134a R-134a R-134a
kg.5555
No.2223
Piping connections mm 168.3 168.3 168.3 219.1
Liquid connections mm42424242
Gas Discharge connections mm 88.9 88.9 88.9 88.9
Safety devices
Notes (1)
Notes (2)
Cooling
EWLD~I-SS
Type
Material
Casing
Colour
Minimum capacity
EER (1)
Dimensions
Capacity control
Cooling
Unit
Operating Weight
Unit
Water heat exchanger
Evaporator
Weight
Type
Nominal Water pressure drop
Water volume
Nominal water flow rate
Insulation material
Compressor
Type
Oil charge
Refrigerant circuit
Sound level
Low suction pressure (pressure transducer)
Outlet
Compressor motor protection
High discharge temperature
Low oil pressure
Low pressure ratio
Cooling capacity, unit power input in cooling and EER are based on the following conditions: evaporator 12/7°C;
45 °C saturated discharge temperature at the compressor.
The values are according to ISO 3744 and are referred to: evaporator 12/7°C, saturated discharge temperature
45°C, full load operation.
Evaporator water inlet/outlet
Inlet
Quantity
Stepless
Ivory White
Galvanized and painted steel sheet
Single Pass Shell&Tube
Closed cell
Semi-hermetic
single screw compressor
High discharge pressure (pressure switch)
High discharge pressure (pressure transducer)
Refrigerant type
Sound Power (2)
Sound Pressure (2)
Refrigerant charge
N. of circuits
High oil filter pressure drop
Phase monitor
Emergency stop button
Water freeze protection controller
Содержание
- Code requirements safety and observant of laws directives 3
- Features and advantages 3
- Infinitely capacity control 3
- Seasonal quietness 3
- Certifications 4
- Sound configuration 4
- Versions 4
- Cabinet and structure 5
- Ecological hfc 134a refrigerant 5
- Electronic expansion valve 5
- Evaporator 5
- General characteristics 5
- Refrigerant circuit 5
- Screw compressors 5
- Control section main features 6
- Electrical control panel 6
- Safety device logic for each refrigerant circuit 6
- Chiller sequencing 7
- Digital sequencing panel 7
- Microtech iii 7
- Microtech iii remote control 7
- Regulation type 7
- Serial sequencing panel 7
- Supervising systems on request 7
- System security 7
- Options on request 8
- Standard accessories supplied on basic unit 8
- Nomenclature 9
- Technical specifications 10
- Ewld i ss 17
- Sound levels 17
- Sound pressure levels correction for different distances 17
- Ewld i ss 18
- Operating limits 18
- Table 1 evaporator minimum and maximum water 18
- Table 2 evaporator fouling factors 18
- Table 3 minimum glycol percentage for low air temperature 18
- Table 3 minimum glycol percentage for low water temperature 18
- How to use the correction factors proposed in the previous tables 19
- Table 4 correction factors for low evaporator leaving water temperature 19
- Table 5 correction factors for water and glycol mixture 19
- Water charge flow and quality 20
- Water content in cooling circuits 21
- Ewld i ss 22
- Notes 1 cc cooling capacity 2 pi unit power input 3 hr heat rejection 4 elwt evaporator leaving water temperature δt 5 c 5 data refers to 0 0176 m2 c kw evaporator fouling factor 22
- Standard ratings 22
- Notes 6 cc cooling capacity 7 pi unit power input 8 hr heat rejection 9 elwt evaporator leaving water temperature δt 5 c 10 data refers to 0 0176 m2 c kw evaporator fouling factor 23
- Notes 11 cc cooling capacity 12 pi unit power input 13 hr heat rejection 14 elwt evaporator leaving water temperature δt 5 c 15 data refers to 0 0176 m2 c kw evaporator fouling factor 24
- 91 l s 25
- Evaporator and condenser pressure drops 25
- Ewld i ss 25
- How to use the formula example evaporator 25
- Pd2 kpa pd1 kpa x where pd2 pressure drop to be determinated kpa pd1 pressure drop at nominal condition kpa q2 water flow at new working condition l s q1 water flow at nominal condition l s 25
- The unit ewld320i ss has been selected for working at the following conditions evaporator water in out 11 6 c saturated discharge temperature 40 c the cooling capacity at these working conditions is 333 kw the evaporator water flow at these working conditions is 15 1 l s the unit ewld320i ss at nominal working conditions has the following data evaporator water in out 12 7 c saturated discharge temperature 45 c the cooling capacity at these working conditions is 328 kw the evaporator water flow at these working conditions is 15 7 l s the evaporator pressure drop at these working conditions is 34 kpa the evaporator pressure drop at the selected working condition will be pd2 kpa 34 kpa x pd2 kpa 35 kpa note if the calculated evaporator water pressure drop is below 10 kpa or above 100 kpa please contact the factory for dedicated evaporator 25
- To determinate the evaporator or condenser pressure drop for different versions or at different working condition please refer to the following formula 25
- Dimensions 26
- Handling 29
- Installation notes 29
- Location 29
- Minimum clearance requirements for machine maintenance 29
- Minimum space requirements 29
- Warning 29
- Dimensions 30
- General 30
- Noise level and vibrations 30
- Performance 30
- Refrigerant 30
- Technical specification for water cooled screw chiller 30
- Unit description 30
- Chiller components 31
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