CWW/K 726-P÷36012-P

Water cooled liquid Chillers and Heat Pumps with Scroll compressors and plate exchangers

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The CWW/K 726-P÷36012-P series liquid Chillers and Heat Pumps, with R410A refrigerant, are designed for medium and large domestic or industrial systems which require medium-high power, space-saving units and quiet operation. These units are ideal for indoor installation and, equipped with a self contained structure, they reduce the overall dimensions to a minimum while at the same time making installation and maintenance operations easier.
The units are characterized by multi-compressor design on double cooling circuit, to reach high energy performances, reduction of current at start-up, elimination of inertial tanks and excellent silent functioning. The use of components built in large series makes them highly reliable and the management of a high number of compressors allows increased life span with reduction of machine stopping risks and easier maintenance operations.

The units 726-P÷1128-P are compliant to the ErP Regulation; the units 1208-P÷36012-P are not compliant to the ErP Regulation.
On request, units can be supplied with R452B or R454B refrigerant.

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.
Cooling circuit shut-off valve on liquid line in 1048-P÷36012-P models.
Electronic expansion valve.
Electronic high and low pressure gauges.
R410A refrigerant. On request R452B or R454B refrigerant.
Electrical board includes: main switch with door safety interlock, fuses, thermal protection relays for compressors, interface relay and terminals for external connections.
Microprocessor control and regulation system.

Accessories

Factory fitted accessories

IM Automatic circuit breakers
RE Adjustable minimum/maximum voltage and phase control relay
SL Unit silencement
RFM Cooling circuit shut-off valve on discharge line
RFL Cooling circuit shut-off valve on liquid line
PV2 2-Way electronic pressostatic valve
PV3 3-Way electronic pressostatic valve
BT Low water temperature kit
DS Desuperheater
RT Total heat recovery
FE Antifreeze heater for evaporator
SS Soft start
DPH Device for heating only Heat Pump operation
WM Web Monitoring - Wireless remote monitoring (4G)
IS Modbus RTU protocol, RS485 serial interface
IST Modbus TCP/IP protocol, Ethernet port
ISBT BACnet IP protocol, Ethernet port
ISB1 BACnet MSTP protocol, RS485 serial interface, BTL certified
ISBT1 BACnet IP protocol, Ethernet port, BTL certified
ISS SNMP protocol, Ethernet port
MTS Master/Slave Network Management
IAV Remote set-point, 0-10V signal
IAA Remote set-point, 4-20mA signal
IAS Remote signal for second set-point activation
IDL Demand limit from digital input
IVV 0-10V signal for the management of the electronic pressostatic valve source side
MN High and low pressure gauges

Loose accessories

CR Remote control panel
AG Rubber shock absorbers
AM Spring shock absorbers

Technical data

			726-P	786-P	826-P	906-P	1048-P	1128-P	1208-P	13010-P	15010-P	16812-P	18012-P	21012-P	24012-P	27012-P	30012-P	33012-P	36012-P
Cooling	Cooling capacity (1)	kW	224	250	274	308	345	383	422	462	509	562	622	696	786	895	1015	1129	1242
	Absorbed power (1)	kW	52	57	63	70	78	86	95	104	115	129	144	157	176	204	230	261	287
	EER (1)		4,31	4,39	4,35	4,40	4,42	4,45	4,44	4,44	4,43	4,36	4,32	4,43	4,47	4,39	4,41	4,33	4,33
Cooling (EN14511)	Cooling capacity (1)	kW	223	249	273	307	343	382	420	460	507	559	619	693	783	891	1011	1124	1236
	EER (1)		4,08	4,16	4,11	4,17	4,20	4,26	4,23	4,21	4,20	4,13	4,11	4,24	4,29	4,18	4,22	4,12	4,11
	SEER (2)		5,27	5,52	5,56	5,87	5,61	5,99	6,08	6,08	6,14	5,95	5,96	5,91	6,22	6,08	6,16	6,03	6,03
	Energy Efficiency (2)	%	203	213	214	227	216	232	235	235	238	230	230	228	241	235	238	233	233
Heating	Heating capacity (3)	kW	290	320	349	394	437	484	534	584	640	710	783	874	986	1113	1255	1391	1531
	Absorbed power (3)	kW	66	74	80	88	101	111	119	135	144	164	181	203	224	259	289	321	357
	COP (3)		4,39	4,32	4,36	4,48	4,33	4,36	4,49	4,33	4,44	4,33	4,33	4,31	4,40	4,30	4,34	4,33	4,29
Heating (EN14511)	Heating capacity (3)	kW	291	321	350	396	438	485	536	585	642	713	787	875	987	1114	1257	1393	1533
	COP (3)		4,31	4,14	4,30	4,41	4,29	4,33	4,44	4,29	4,39	4,28	4,26	4,29	4,39	4,28	4,32	4,31	4,27
	SCOP (4)		5,23	5,36	5,49	5,50	5,77	5,71	5,78	5,78	5,74	4,53	5,70	4,08	6,00	4,58	5,83	4,50	5,61
	Energy Efficiency (4)	%	201	206	212	212	223	220	223	223	222	173	220	155	232	175	225	172	216
Compressor	Quantity	N°	3+3	3+3	3+3	3+3	4+4	4+4	4+4	5+5	5+5	6+6	6+6	6+6	6+6	6+6	6+6	6+6	6+6
	Refrigerant circuits	N°	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2
	Capacity steps	N°	6	6	6	6	8	8	8	8	8	10	10	10	10	10	10	10	10
Evaporator	Water flow	l/s	10,70	11,94	13,09	14,72	16,48	18,30	20,16	22,07	24,32	26,85	29,72	33,25	37,55	42,76	48,49	53,94	59,34
	Pressure drops	kPa	54	51	56	56	60	47	52	60	57	70	59	60	53	66	61	70	79
	Water connections	DN	80	80	80	80	80	80	80	80	80	80	80	150	150	150	150	150	150
Condenser	Water flow	l/s	13,19	14,67	16,10	18,06	20,21	22,41	24,70	27,04	29,81	33,01	36,60	40,75	45,98	52,51	59,48	66,41	73,05
	Pressure drops	kPa	70	74	81	76	67	59	65	75	76	70	77	60	53	65	61	70	78
	Water connections	DN	80	80	80	80	80	80	80	80	80	80	80	150	150	150	150	150	150
Electrical characteristics	Power supply	V/Ph/Hz	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50
	Max. running current	A	136	151	163	176	201	218	234	251	293	326	352	399	454	506	559	629	699
	Max. starting current	A	261	284	331	344	334	385	402	384	461	494	519	576	631	720	773	891	961
Sound pressure	STD version (5)	dB(A)	68	70	71	71	71	72	72	72	73	73	74	77	78	79	79	80	80
	With SL accessory (5)	dB(A)	65	66	67	67	67	68	68	68	69	69	69	73	74	75	75	76	76
	SSL version (5)	dB(A)	61	62	63	63	63	64	64	64	65	65	64	69	70	71	71	72	72
Weights	Transport weight	kg	1047	1103	1123	1159	1352	1422	1442	1642	1730	1930	1968	2806	2884	3184	3558	3658	3708
Weights	Operating weight	kg	1080	1140	1160	1200	1400	1480	1500	1700	1800	2000	2050	2900	3000	3300	3700	3800	3850

Dimensions

			726-P	786-P	826-P	906-P	1048-P	1128-P	1208-P	13010-P	15010-P	16812-P	18012-P	21012-P	24012-P	27012-P	30012-P	33012-P	36012-P
L	STD/SSL	mm	2500	2500	2500	2500	3000	3000	3000	3550	3550	4000	4000	4650	4650	4650	4650	4650	4650
W	STD/SSL	mm	800	800	800	800	800	800	800	800	800	800	800	1350	1350	1350	1350	1350	1350
H	STD/SSL	mm	1900	1900	1900	1900	1900	1900	1900	1900	1900	1900	1900	1900	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 Seasonal energy efficiency of cooling at low temperature. According to EU Regulation n. 2016/2281.
3 Heated water from 40 to 45 °C, water temperature at the evaporator from 15 to 10 °C.
4 Seasonal energy efficiency of heating at low temperature with average climatic conditions. According to EU Regulation n. 813/2013.
5 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
N.B. (1) Weights of SSL and WP versions are specified on technical brochure.