CWB Series – Menu

CWB series AIR-COOLED WATER CHILLERS WITH Axial fans and SCROLL COMPRESSORS

Cooling capacity frpm 142 to 574 kW and water connections diameter from 2 1/2″ to 3″

DESCRIPTION
The CWB range consists of Air cooled water chillers with axial fans for outdoor installation. The CWB family comprises of 12 basic models with cooling capacities ranging from 140 to 570 kW. This allows flexibility of the unit selection, its accessories and the final installation operating conditions.
CWB units are particularly suitable for installations where continuous chilled water production is required even for applications in low external ambient temperatures. In this case, it is necessary to use the option of EC condenser fans.
The optional free-cooling feature, available in the 160-280 kW models, allows the free cooling of the water using a coil cooled by the ambient air.

REFRIGERANT CIRCUIT
The cooling circuit is manufactured by skilled technicians using quality materials and brazing procedures that comply with Directive 97/22/EC. This applies to all models and includes the following components (except those listed above):
dehydrating filter, sight glass and humidity indicators, high and low pressure manostats (fixed setting), the high and low pressure gauges, pressure taps for checks and maintenance, evaporation and condensation pressure transducers, refrigerant temperature probes and air / water probes.
For the models from CWB270 to CWB570, the evaporator has a double refrigerant circuit and a single water circuit. Compared to solutions with independent evaporators, this configuration is particularly effective for partial load applications.

HYDRAULIC CIRCUIT
The hydraulic circuit consists of an internal evaporator and pipework. It features a differential pressure monostat that protects the evaporator in the event of a loss of water flow.

APPLICATIONS
• Continuous chilled water mproduction
• Applications in low external ambient temperatures

Model CWB	140	160	190	220	270	300	320	380	420	450	510	570
Cooling capacity (1)	[kW]	142,37	166,11	193,06	224,25	270,55	293,84	318,38	386,82	423,69	458,07	526,44	574,08
Compressors power input (1)	[kW]	31,93	43,53	38,45	50,98	52,67	62,54	74,26	73,30	87,75	103,02	105,15	122,70
Total power input (1) (2)	[kW]	36,05	47,65	44,63	57,16	60,91	70,78	82,50	85,66	100,11	115,38	121,63	139,18
Total absorbed current (1) (2)	[A]	59,90	76,72	74,60	94,16	103,14	117,93	134,65	140,93	164,73	189,89	212,16	232,79
EER (pump excluded) (1)	3,95	3,49	4,33	3,92	4,44	4,15	3,86	4,52	4,23	3,97	4,33	4,12
Water flow (1)

[l/h]

24,488

28,570

33,207

37,571

46,535

50,541

54,761

66,532

72,874

78,789

90,547

98,742

Pressure drop (1)

[kPa]

Maximum power input (total) (2) (3)

[kW]

54,4

65,2

69,4

82,2

85,8

97,0

113,6

134,5

149,6

164,5

188,0

202,0

Total absorbed current(2) (3)

[A]

88,1

103,8

112,6

133,3

139,5

156,5

181,6

215,2

241,0

266,6

311,5

332,6

Starting current (2) (3)

[A]

257,8

265,7

349,0

359,3

318,4

333,2

352,0

377,1

473,5

492,6

508,2

555,0

Fan power

[kW]

2,06

Fan current

[A]

3,80

Number of fans

[#]

Power supply

[V/Ph/hz]

400/3/50

IP protection degree

IP54

Refrigerant

R410A

Compressor type

SCROLL

Evaporator type

BRAZED PLATES

Condenser type

MICROCHANNEL

N° of compressors

[#]

N° of refrigerant circuits

[#]

Air flow

[m3/h]

44.000

66.000

88.000

132.000

88.000

132.000

176.000

Sound pressure level (4)

[dbA]

58,0

56,6

58,0

60,5

59,5

60,5

59,5

64,5

Water connections diameter

[inch]

2 ½“

3“

Width

[mm]

1.104

2.204

Depth

[mm]

3.004

4.002

3.004

4.002

5.004

Height

[mm]

1.977

Weight

[kg]

1.170

1.180

1.290

1.300

1.810

1.830

1.850

2.250

2.270

2.290

2.650

Tank capacity – Option

[dm3]

470

600

Expansion vessel capacity – Option

[dm3]

P2 Pump power input – Option

[kW]

3,75

5,10

6,70

9,10

P2 Pump absorbed current – Option

[A]

6,50

9,20

11,80

15,70

P3 Pump power input – Option

[kW]

6,70

9,10

13,10

P3 Pump absorbed current – Option

[A]

11,80

15,70

22,00

P5 Pump power input – Option

[kW]

11,00

16,58

17,50

P5 Pump absorbed current – Option

[A]

18,80

27,20

30,00

(1) Data referred to: water temp. in/out: 20/15°C – Ambient air temp. 25°C – (2) Data referred to unit without pump – (3) Data related to most heavy condition allowed by safety devices – (4) Referred at 10 m and at an height of 1,5 m in free field.