CWW-M/SZ/K 724-P÷1306-P

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

The CWW-M/SZ/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.

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

Versions

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

Power range

232-526 kW
66.0-150 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	232	279	346	431	526
Cooling	Absorbed power (1)	kW	54	64	82	98	125
Heating	Heating capacity (2)	kW	298	348	445	534	661
Heating	Absorbed power (2)	kW	69	82	104	126	159
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	11,08	13,33	16,53	20,59	25,13
	Pressure drops	kPa	54	52	74	52	57
	Water connections	DN	80	80	80	80	80
Condenser	Water flow	l/s	13,66	16,36	20,44	25,29	31,09
	Pressure drops	kPa	67	50	71	59	65
	Water connections	DN	80	80	80	80	80
Electrical characteristics	Power supply	V/Ph/Hz	460/3/60	460/3/60	460/3/60	460/3/60	460/3/60
	Max. running current	A	127	157	196	235	293
	Max. starting current	A	282	343	425	422	523
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	1044	1110	1301	1462	1804
Weights	Operating weight	kg	1070	1160	1350	1530	1885

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.