Daikin EWADC16C-XS [5/96] Compressor asymmetric single screw
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GENERAL CHARACTERISTICS
Cabinet and structure
The cabinet is made of galvanized steel sheet and painted to provide a high resistance to corrosion.
Colour Ivory White (Munsell code 5Y7.5/1) (±RAL7044).The base frame has an eye-hook to lift the unit
with ropes for an easy
installation. The weight is uniformly distributed along the profiles of the base and this facilitates the arrangement of the unit.
Compressor (Asymmetric Single Screw)
The compressor is semi-hermetic, single-screw type with gate-
rotor made with
the latest high-
strength fibre reinforced star material. The compressor has an asymmetric slide regulation managed by the unit
controller for infinitely modulating capacity from 100% to 25%. An integrated high efficiency oil separator
maximizes the oil separation
and standard start is Wye-Delta (Y-∆) type.
Refrigerant
The compressors have been designed to operate with R-
134a, ecological refrigerant with zero ODP (Ozone Depletion
Potential) and very low GWP (Global Warming Potential), resulting in low TEWI (Total Equivalent Warming Impact).
Evaporator (Shell&Tube)
The unit is equipped with a direct expansion shell&tube evaporator with refrigerant evaporating
inside the tubes and water flowing outside. The tubes are enhanced for maximu
m heat transfer and rolled into steel tube sheet and
sealed.
The evaporators are single-pass on both the refrigerant and water sides for pure counter-
flow heat exchange and low refrigerant
pressure drops. Both attributes contribute to the heat exchanger ef
fectiveness and total unit’s outstanding efficiency. The water side is
designed for 10 bar of maximum operating pressure and is provided with vents and drain.
The external shell is covered with a 20mm closed cell insulation material and the evaporator
water connections are provided with
victaulic kit (as standard). Each evaporator has 2 or 3 circuits, one for each compressor and is manufactured in accordance t
o 97/23/EC
directive (PED).
Condenser
The condenser is manufactured with internally enhanced
seamless copper tubes arranged in a staggered row pattern
and mechanically expanded into lanced and rippled aluminum condenser fins with full fin collars. An integral sub-
cooler circuit provides
sub-cooling to effectively eliminate liquid flashing and increase cooling capacity without increasing the power input.
Heat Recovery Exchanger
The unit is equipped with a plate to plate type heat exchanger for each circuit made of stainless
steel brazed plates and manufactured in accordance to PED approval.
Condenser fans (ø 800)
The condenser fans are propeller type with high efficiency design blades to maximize performances.
The material of the blades is glass reinforced resin and each fan is protected by a guard. Fan motors are protected by circuit breaker
s
(installed inside the electrical panel as a standard) and are IP54.
Electronic expansion valve
The unit is equipped with the most advanced electronic expansion valves to achieve precise
control of refrigerant mass flow. As today’s system requires impro
ved energy efficiency, tighter temperature control, wider range of
operating conditions and incorporate features like remote monitoring and diagnostics, the application of electronic expansion
valves
becomes mandatory.
Electronic expansion valves possess unique features: short opening and closing time, high resolution, positive shut-
off function to
eliminate use of additional solenoid valve, continuous modulation of mass flow without stress in the refrigerant circuit and
corrosion
resistance stainless steel body.
Electronic expansion valves are typically working with lower ∆
P between high and low pressure side, than a thermostatic expansion
valve. The electronic expansion valve allows the system to work with low condenser pressure (winter time) without any
refrigerant flow
problems and with a perfect chilled water leaving temperature control.
Refrigerant circuit
Each unit has 2 or 3 independent refrigerant circuits and each one includes:
• Compressor with integrated oil separator
• Refrigerant
• Evaporator
• Air Cooled Condenser
• Electronic expansion valve
• Discharge line shut off valve
• Liquid line shut off valve
• Sight glass with moisture indicator
• Filter drier
• Charging valves
• High pressure switch
• High pressure transducers
• Low pressure transducers
• Oil pressure transducer
Содержание
- Air cooled screw chillers 1
- Databook 1
- Ewad c 1
- Table of contents 2
- Certifications 3
- Code requirements safety and observant of laws directives 3
- Features and benefits 3
- Infinite capacity control 3
- Low operating cost and extended operating life 3
- Low operating sound levels 3
- Outstanding reliability 3
- Superior control logic 3
- Features and benefits 4
- Sound configurations 4
- Versions 4
- Cabinet and structure 5
- Compressor asymmetric single screw 5
- Condenser 5
- Condenser fans ø 800 5
- Electronic expansion valve 5
- Evaporator shell tube 5
- General characteristics 5
- Heat recovery exchanger 5
- Refrigerant 5
- Refrigerant circuit 5
- Electrical control panel 6
- General characteristics 6
- General characteristics 7
- Supervising systems on request 7
- Options 8
- Options on request 8
- Standard options supplied on basic unit 8
- Options 9
- Nomenclature 10
- Ewad c ss 11
- Technical specifications 11
- Ewad c ss 12
- Technical specifications 12
- Ewad c sl 13
- Technical specifications 13
- Ewad c sl 14
- Technical specifications 14
- Ewad c sr 15
- Technical specifications 15
- Ewad c sr 16
- Technical specifications 16
- Ewad c xs 17
- Technical specifications 17
- Ewad c xs 18
- Technical specifications 18
- Ewad c xs 19
- Technical specifications 19
- Ewad c xl 20
- Technical specifications 20
- Ewad c xl 21
- Technical specifications 21
- Ewad c xl 22
- Technical specifications 22
- Ewad c xr 23
- Technical specifications 23
- Ewad c xr 24
- Technical specifications 24
- Ewad c xr 25
- Technical specifications 25
- Ewad c ps 26
- Technical specifications 26
- Ewad c ps 27
- Technical specifications 27
- Ewad c pl 28
- Technical specifications 28
- Ewad c pl 29
- Technical specifications 29
- Ewad c pr 30
- Technical specifications 30
- Ewad c pr 31
- Technical specifications 31
- Electrical specifications 32
- Ewad c ss 32
- Electrical specifications 33
- Ewad c sl 33
- Electrical specifications 34
- Ewad c sr 34
- Electrical specifications 35
- Ewad c xs 35
- Electrical specifications 36
- Ewad c xs 36
- Electrical specifications 37
- Ewad c xl 37
- Electrical specifications 38
- Ewad c xl 38
- Electrical specifications 39
- Ewad c xr 39
- Electrical specifications 40
- Ewad c xr 40
- Electrical specifications 41
- Ewad c ps 41
- Electrical specifications 42
- Ewad c pl 42
- Electrical specifications 43
- Ewad c pr 43
- Ewad c sl 44
- Ewad c ss 44
- Sound levels 44
- Ewad c sr 45
- Ewad c xs 45
- Sound levels 45
- Ewad c xl 46
- Sound levels 46
- Ewad c pl 47
- Ewad c ps 47
- Ewad c xr 47
- Sound levels 47
- Ewad c pr 48
- Sound levels 48
- Operating limits 49
- Operating limits 50
- Cooling performance 51
- Ewad c ss 51
- C12 c13 52
- Cooling performance 52
- Ewad c ss 52
- C16 c17 53
- Cooling performance 53
- Ewad c ss 53
- H14 c15 53
- C18 c19 54
- Cooling performance 54
- Ewad c ss 54
- Cooling performance 55
- Ewad c sl 55
- C12 c13 56
- Cooling performance 56
- Ewad c sl 56
- C16 c17 57
- Cooling performance 57
- Ewad c sl 57
- H14 c15 57
- C18 c19 58
- Cooling performance 58
- Ewad c sl 58
- Cooling performance 59
- Ewad c sr 59
- C11 c12 60
- Cooling performance 60
- Ewad c sr 60
- C14 c15 61
- Cooling performance 61
- Ewad c sr 61
- H14 c13 61
- C16 c17 62
- C18 c19 62
- Cooling performance 62
- Ewad c sr 62
- Cooling performance 63
- Ewad c xs 63
- C10 c11 64
- C12 c13 64
- Cooling performance 64
- Ewad c xs 64
- C16 c17 65
- Cooling performance 65
- Ewad c xs 65
- H14 h15 65
- C18 c19 66
- C20 c21 66
- Cooling performance 66
- Ewad c xs 66
- Cooling performance 67
- Ewad c xs 67
- Cooling performance 68
- Ewad c xl 68
- C10 c11 69
- C12 c13 69
- Cooling performance 69
- Ewad c xl 69
- C16 c17 70
- Cooling performance 70
- Ewad c xl 70
- H14 h15 70
- C18 c19 71
- C20 c21 71
- Cooling performance 71
- Ewad c xl 71
- Cooling performance 72
- Ewad c xl 72
- Cooling performance 73
- Ewad c xr 73
- C10 c11 74
- C12 c13 74
- Cooling performance 74
- Ewad c xr 74
- C16 c17 75
- Cooling performance 75
- Ewad c xr 75
- H14 h15 75
- C18 c19 76
- C20 c21 76
- Cooling performance 76
- Ewad c xr 76
- Cooling performance 77
- Ewad c xr 77
- Cooling performance 78
- Ewad c ps 78
- C12 c13 79
- C14 c15 79
- Cooling performance 79
- Ewad c ps 79
- Cooling performance 80
- Ewad c ps 80
- Cooling performance 81
- Ewad c pl 81
- C12 c13 82
- C14 c15 82
- Cooling performance 82
- Ewad c pl 82
- Cooling performance 83
- Ewad c pl 83
- Cooling performance 84
- Ewad c pr 84
- C11 c13 85
- C14 c15 85
- Cooling performance 85
- Ewad c pr 85
- Cooling performance 86
- Ewad c pr 86
- Single pump 2 poles discharge head 87
- Twin pump 2 poles discharge head 87
- Water pump kit 88
- Dimensional drawings 89
- Ewad c 2 circuits 89
- Dimensional drawings 90
- Installation notes 91
- Installation notes 92
- Compressors asymmetric 93
- Dimensions 93
- General 93
- Performance 93
- Refrigerant 93
- Sound level and vibrations 93
- Technical specifications 93
- Unit description 93
- Condensation control 94
- Condenser coil 94
- Condenser fans 94
- Electrical control panel 94
- Evaporator 94
- Hydronic kit options on request 94
- Low sound unit configurations on request 94
- Refrigerant circuit 94
- Technical specifications 94
- Technical specifications 95
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