CWW-M/SZ/Y/A 1301÷2601

A CLASS energy efficiency watercooled liquid Chillers with Screw compressors and flooded shell and tube exchangers

The liquid chillers of the CWW-M/SZ/Y/A 1301÷2601 ENERGYMAX series, with R134a refrigerant, are designed for the service sector or industrial systems requiring high power. These units are characterized by an high efficiency, in A CLASS, with EER higher than 5,05 thanks to the dedicated technical solutions as flooded shell and tube evaporator and Screw compressors.
Units are equipped with latest generation Screw compressors, flooded shell and tube evaporator and connections for condensation with tower water or well water or with a Dry-Cooler. Furthermore, they have a series of accessories which are factory-assembled of supplied separately such as desuperheater, total heat recovery and, if neccessary, a device for operating a heat pump. Designed and produced to optimize the layout of each component so as to make any necessary maintenance operations more convenient, these units have an essential and compact structure intended for indoor installation.

The units feature 460V power supply and 60Hz frequency.

Versions

CWW-M/SZ/Y/A - Cooling only

Power range

239-518 kW
68.0-147 Ton

Features

Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
Screw compressors, with external oil separator, suction filter, oil sight glass, thermal protection, hot gas shut off valves and stepless capacity steps.
Shell and tube type condenser, with easily removable cast iron heads to enable access for maintenance operations.
Flooded shell and tube type evaporator, with casing with high efficiency tube nest designed for R134a.
Electronic expansion valve.
R134a refrigerant.
Electrical board includes: main switch with door safety interlock, protection modules and overload protection for compressors.
Microprocessor control and regulation system.

Accessories

Factory fitted accessories

BT Low water temperature kit
HR Desuperheater
HRT/S Total heat recovery in series
FE Antifreeze heater for evaporator
DP Device for heat pump operation
II Inverter on one compressor and soft start for other compressors
SS Soft start
WM Web Monitoring - Wireless remote monitoring (GPRS/EDGE/3G/TCP-IP)
IS Modbus RTU protocol, RS485 serial interface
CP Potential free contacts

Loose accessories

MN High and low pressure gauges
CR Remote control panel
AM Spring shock absorbers
PV3 3-Way electronic pressostatic valve
AG Rubber shock absorbers
FL Flow switch

Technical data

			1301	1501	1701	1901	2001	2601
Cooling	Cooling capacity (1)	kW	239	282	337	406	462	518
Cooling	Absorbed power (1)	kW	46	53	65	78	86	96
Compressor	Quantity	n°	1	1	1	1	1	1
	Refrigerant circuits	n°	1	1	1	1	1	1
	Capacity steps	n°	Stepless	Stepless	Stepless	Stepless	Stepless	Stepless
Evaporator	Water flow	l/s	11,42	13,47	16,10	19,40	22,07	24,75
	Pressure drops	kPa	39	37	40	46	38	34
	Water connections	DN	100	100	100	100	100	100
Condenser	Water flow	l/s	13,62	16,01	19,21	23,12	26,18	29,34
	Pressure drops	kPa	48	41	57	56	54	46
	Water connections	DN	100	100	100	100	100	125
Electrical characteristics	Power supply	V/Ph/Hz	460/3/60	460/3/60	460/3/60	460/3/60	460/3/60	460/3/60
	Max. running current	A	105	121	148	177	199	214
	Max. starting current	A	361	416	422	488	529	742
Sound pressure	STD version (2)	dB(A)	70	71	73	75	76	77
Weights	Transport weight	kg	2910	3090	3217	3410	3722	3910
Weights	Operating weight	kg	3010	3220	3360	3580	3900	4120

Dimensions

			1301	1501	1701	1901	2001	2601
L	STD	mm	3400	3400	3400	3400	3400	3400
W	STD	mm	1150	1150	1150	1150	1150	1150
H	STD	mm	2100	2100	2100	2100	2100	2100

Notes

1 Chilled water from 12 to 7 °C, water temperature at the condenser from 30 to 35 °C.
2 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.