Daikin EWAH330TZ-SSB1 [98/102] Technical specifications

Daikin EWAH330TZ-SSB1 [98/102] Technical specifications
97/100
TECHNICAL SPECIFICATIONS
General The chiller will be designed and manufactured in accordance with the following European directives:
Construction of pressure vessel 2014/68/EU
Machinery Directive 2006/42/EC
Low Voltage 2014/35/EU
Electromagnetic Compatibility 2014/30/EU
Electrical & Safety codes EN 602041 / EN 60335-2-40
Manufacturing Quality Standards UNI UNI EN ISO 1400
To avoid any losses, the unit will be tested at full load in the factory (at the nominal working conditions and water
temperatures). The chiller will be delivered to the job site completely assembled and charged with refrigerant
and oil.
The installation of the chiller must comply with the manufacturer’s instructions for rigging and handling
equipment.
The unit will be able to start up and operate (as standard) at full load with:
- outside air temperature from............... °C to............... °C
-
evaporator leaving fluid temperature between............... °C and............... °C
Refrigerant HFO 1234ze
Performance Chiller shall supply the following performances:
Number of chiller(s):............... unit(s)
Cooling capacity for single chiller:............... kW
Power input for single chiller in cooling mode:............... kW
Heat exchanger entering water temperature in cooling mode:............... °C
Heat exchanger leaving water temperature in cooling mode:............... °C
Heat exchanger water flow:............... l/s
Nominal outside working ambient temperature in cooling mode:............... °C
Minimum full load efficiency (EER): …………….. (kW/kW)
Minimum part load efficiency (ESEER): …………….. (kW/kW)
Operating voltage range should be 400V ±10%, 3ph, 50Hz (or 380V ±10%, 3ph, 60Hz), voltage unbalance
maximum 3%, without neutral conductor and shall only have one power connection point.
Unit description Chiller shall include one or two independent refrigerant circuits, semi-hermetic type rotary
single screw compressors, refrigerant cooled inverter drive for each compressor, electronic expansion device
(EEXV), direct expansion ‘shell & tube’ or PHE evaporator, air-cooled condenser section made with aluminum
Microchannel technology, R-1234ze refrigerant, lubrication system, motor starting components, discharge line
shut-off valve, suction line shut-off valve, control system and all components necessary for a safe and stable unit
operation.
The chiller will be factory assembled on a robust base frame made of galvanized steel, protected by an epoxy
paint.
Sound level and vibrations Sound power level shall not exceed ………dB(A). The sound power levels must be
rated in accordance to ISO 9614 (other types of rating cannot be used). Vibration on the base frame should not
exceed 2 mm/s.
Dimensions Unit dimensions shall not exceed following indications:
- Unit length............... mm
- Unit width............... mm
- Unit height............... mm
Compressors
Semi-hermetic, single-screw type with one main helical rotor meshing with the gaterotor. The gaterotor will be
constructed of a carbon impregnated engineered composite material. The gaterotor supports will be constructed
of cast iron.
Each compressor shall be fitted with inverter drive for variable capacity control. Inverter shall be integrated
within the compressor casing and it shall be cooled by liquid refrigerant.
Each compressor shall be provided with Variable Volume Ratio (VVR) technology. The system shell modify the
volumetric compression ratio according to the operating conditions in order to enhance the efficiency.
Each compressor shall be provided with DC motors (for GOLD and PLATINUM efficiency series)
The oil injection shall be used in order to get high EER (Energy Efficiency Ratio) also at high condensing pressure
and low sound pressure levels in each load condition.
Refrigerant system differential pressure shall provide oil flow through service replaceable, 0.5 micron, full flow,
cartridge type oil filter internal to compressor.
Refrigerant system differential pressure shall provide oil injection on all moving compressor parts to correctly
lubricate them. Electrical oil pump lubricating system is not acceptable.
The compressor’s oil cooling must be realized, when necessary, by refrigerant liquid injection. External

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