EWYD520BZSS - Air conditioner DAIKIN - Free user manual and instructions
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| Product Type | Air-cooled screw chiller (air conditioner) |
| Brand | Daikin |
| Model | EWYD520BZSS |
| Cooling Capacity | Approximately 520 kW (nominal) |
| Refrigerant | R134a (HFC) |
| Compressor Type | Hermetic screw compressor |
| Condenser | Air-cooled microchannel heat exchanger |
| Evaporator | Brazed plate heat exchanger |
| Power Supply | 400 V / 3-phase / 50 Hz (standard) |
| Dimensions (W × D × H) | Approx. 4000 × 2500 × 2300 mm |
| Weight | Approx. 5000 kg (operating) |
| Sound Pressure Level | Approx. 75 dB(A) at 1 m |
| Control System | Microprocessor controller with BMS compatibility |
| Main Functions | Cooling, part-load control, anti-cycling, intelligent defrost, remote monitoring |
| Safety Devices | High/low pressure switches, thermal overload, phase monitor, safety relief valve |
| Maintenance | Clean condenser coils, inspect filters, check refrigerant charge, monitor pressures |
| Spare Parts | Compressor, sensors, filter driers, safety valves, controller boards |
| Repairability | Modular construction with accessible service panels and replaceable components |
| Energy Efficiency | EER up to 3.2 (depending on operating conditions) |
| Certifications | CE, RoHS, PED (typical) |
Frequently Asked Questions - EWYD520BZSS DAIKIN
What type of refrigerant does the Daikin EWYD520BZSS use?
It uses R134a, an HFC refrigerant with zero ODP.
How often should I clean the condenser coils?
Clean the air-cooled condenser coils at least twice a year, more often in dusty environments, to maintain efficiency.
Can the chiller be integrated into a building management system (BMS)?
Yes, the unit features a microprocessor controller with standard Modbus or Bacnet communication options for BMS integration.
What safety devices are installed on the EWYD520BZSS?
It includes high/low pressure switches, thermal overload protection, phase monitor, and a safety relief valve to ensure safe operation.
What is the approximate cooling capacity of this model?
The nominal cooling capacity is approximately 520 kW, but actual performance depends on ambient temperature and water/brine temperatures.
How do I perform routine maintenance?
Typical maintenance includes checking and cleaning the condenser coils, inspecting the refrigerant circuit, verifying electrical connections, and monitoring operating pressures and temperatures.
Are spare parts readily available?
Yes, Daikin provides genuine spare parts such as compressors, sensors, filter driers, and control boards through authorized distributors.
What are the recommended operating ambient temperatures?
The unit is typically designed for ambient temperatures from -10°C to 46°C. Check the technical manual for exact limits.
Can the chiller operate at part load?
Yes, the screw compressor provides continuous capacity control from approximately 25% to 100% load, reducing energy consumption.
What should I do if a high-pressure alarm occurs?
Check the condenser coil for dirt or blockage, ensure fans are working, and verify refrigerant charge. If the problem persists, contact a qualified technician.
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USER MANUAL EWYD520BZSS DAIKIN
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Product information
Brand : DAIKIN
Model : EWYD520BZSS
Category : Air conditioner