CWW-M/K 724-P÷1306-P

Watercooled liquid Chillers and Heat Pumps with Scroll compressors and plate exchangers

The CWW-M/K 724-P÷1306-P NEXTPOWER series, with R410A refrigerant, Scroll compressors and plate exchangers, is designed for medium and large industrial systems requiring high power, space-saving units and quiet operation.
These units are ideal for indoor installation reducing the overall dimensions to a minimum while at the same time making installation and maintenance operations easier.
High reliability is the key plus of NEXTPOWER, thanks to the use of components built in large series and the management of several compressors allowing an increased compressor life span and the reduction of machine stopping risks: a faulty compressor will not compromise the functioning of the unit, that will continue to work with decreased power levels.
NEXTPOWER obtains high energy yield with elevated ESEER values; thanks to the high partialization and the intelligent control module, it doesn't require inertial storage tank.

Versions

CWW-M/K - Cooling only
CWW-M/K/WP - Reversible Heat Pump

Power range

235-533 kW
67.0-152 Ton

Features

Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
Scroll compressors with oil sight glass, internal overheat protection and crankcase heater.
Condenser AISI 316 stainless steel braze welded plates type with two independent circuits on the refrigerant side and one on the water side.
Evaporator AISI 316 stainless steel braze welded plates type with two independent circuits on the refrigerant side and one on the water side, complete with water differential pressure switch.
Electronic expansion valve.
R410A 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

SL Unit silencement
BT Low water temperature kit
DS Desuperheater
RT Total heat recovery
IS Modbus RTU protocol, RS485 serial interface

Loose accessories

MN High and low pressure gauges
CR Remote control panel
PV2 2-Way electronic pressostatic valve
PV3 3-Way electronic pressostatic valve
AG Rubber shock absorbers

Technical data

			724-P	824-P	1044-P	1206-P	1306-P
Cooling	Cooling capacity (1)	kW	235	283	351	437	533
Cooling	Absorbed power (1)	kW	54,6	64,3	82,9	99,6	126
Cooling (EN14511)	Cooling capacity (1)	kW	234	282	349	435	531
	Absorbed power (1)	kW	57	67	87	104	131
	EER (1)		4,07	4,22	3,99	4,18	4,04
Heating	Heating capacity (2)	kW	302	353	451	541	670
Heating	Absorbed power (2)	kW	70	83	105	128	161
Heating (EN14511)	Heating capacity (2)	kW	304	355	455	544	674
	Absorbed power (2)	kW	73	86	110	133	167
	COP (2)		4,16	4,12	4,12	4,10	4,04
Compressor	Quantity	n°	4	4	4	6	6
	Refrigerant circuits	n°	2	2	2	2	2
	Capacity steps	n°	4	4	4	6	6
Evaporator	Water flow	l/s	11,23	13,52	16,77	20,88	25,47
	Pressure drops	kPa	55	54	76	53	59
	Water connections	DN	80	80	80	80	80
Condenser	Water flow	l/s	13,84	16,59	20,73	25,64	31,50
	Pressure drops	kPa	69	51	73	61	67
	Water connections	DN	80	80	80	80	80
Electrical characteristics	Power supply	V/Ph/Hz	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50
	Max. running current	A	146	180	225	270	337
	Max. starting current	A	324	395	489	485	601
Sound pressure	STD version (3)	dB(A)	64	65	65	66	66
Sound pressure	With SL accessory (3)	dB(A)	60	61	61	62	62
Weights	Transport weight	kg	1093	1162	1362	1531	1889
Weights	Operating weight	kg	1120	1210	1410	1600	1970

Dimensions

			724-P	824-P	1044-P	1206-P	1306-P
L	STD	mm	2500	2500	2500	3000	3000
W	STD	mm	800	800	800	800	800
H	STD	mm	1900	1900	1900	1900	1900

Notes

1 Chilled water from 12 to 7 °C, water temperature at the condenser from 30 to 35 °C.
2 Heated water from 40 to 45 °C, water temperature at the evaporator from 15 to 10 °C.
3 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
N.B. (1) Weights of WP version are specified on technical brochure.