TWA 212÷1102 S/K/P

Aircooled liquid Chillers and Heat Pumps with axial fans, Scroll compressors and plate exchanger

The liquid Chillers and Heat Pumps of the TWA 212÷1102 S/K/P series, with R410A refrigerant, are designed for large-sized service sector or industrial ambients.
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. A wide range of accessories, factory fitted or supplied separately, complete the outstanding versatility and functionality of the series.
Are available as option the new EC Inverter fans with high available static pressure and efficiency.
Cooling only units are compliant to the ErP 2021 Regulation for process cooling application; for comfort cooling application they are compliant if provided with EC or ECH accessory (EC Inverter fans).
Heat pump models 726-P÷13010-P are compliant to the ErP Regulation; models
15010-P÷36012-P are compliant if provided with EC or ECH accessory (EC Inverter fans).

On request, units can be supplied with R452B or R454B refrigerant.

Versions

TWA - Cooling only
TWA/WP - Reversible Heat Pump
TWA/SSL - Super silenced cooling only
TWA/WP/SSL - Super silenced reversible Heat Pump

Power range

199-1051 kW
57.0-299 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.
Axial fans directly coupled to an electric motor with external rotor.
Condenser made of copper tubes and aluminium finned coils.
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. On the Heat Pump units it is always installed an antifreeze heater.
Cooling circuit shut-off valve on liquid line in 302÷1102 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 or magnetothermic switches, thermal protection relays for compressors and thermocontacts for fans.
Microprocessor control and regulation system.

Accessories

Factory fitted accessories

SL Unit silencement
RFM Cooling circuit shut-off valve on discharge line
CT Condensing control down to 0 °C
CC Condensing control down to -20 °C
BT Low water temperature kit
EC EC Inverter fans
ECH EC Inverter fans with high available static pressure
DS Desuperheater
RT Total heat recovery
TX Coil with pre-coated fins
EW External water connections
PS Single circulating pump
PSI Inverter single circulating pump
PD Double circulating pump
PDI Inverter double circulating pump
FN Antifreeze heater for pipes
FG Antifreeze heater for single pump and pipes
FM Antifreeze heater for double pump and pipes
SS Soft start
IS Modbus RTU protocol, RS485 serial interface
IST Modbus TCP/IP protocol, Ethernet port
ISB BACnet MSTP protocol, RS485 serial interface
ISBT BACnet TCP/IP protocol, Ethernet port
ISL LonWorks protocol, FTT-10 serial interface
ISS SNMP protocol, Ethernet port
IAV Remote set-point, 0-10 V signal
IAA Remote set-point, 4-20 mA signal
IAS Remote signal for second set-point activation
IDL Demand limit from digital input

Loose accessories

MN High and low pressure gauges
CR Remote control panel
RP Coils protection metallic guards
FP Coils protection metallic guards with filter
AG Rubber shock absorbers
AM Spring shock absorbers

Technical data

			212	222	242	272	302	342	362	412	442	482	562	622	682	762	862	962	1102
Cooling	Cooling capacity (1)	kW	199	226	251	276	304	335	367	403	444	495	546	602	671	751	845	942	1051
	Absorbed power (1)	kW	69	80	85	94	104	113	122	132	155	170	184	211	243	275	303	336	365
	EER (1)		2,88	2,83	2,95	2,94	2,92	2,96	3,01	3,05	2,86	2,91	2,97	2,85	2,76	2,73	2,79	2,80	2,88
Cooling (EN14511)	Cooling capacity (1)	kW	198	225	250	275	303	334	365	402	442	493	544	599	669	749	842	939	1047
	Absorbed power (1)	kW	70	81	86	95	105	115	124	134	157	172	186	214	246	277	306	339	369
	EER (1)		2,84	2,78	2,89	2,89	2,87	2,91	2,95	3,00	2,81	2,87	2,92	2,81	2,72	2,70	2,75	2,77	2,84
	SEER (2)		3,82	3,81	3,86	3,96	3,90	4,03	4,13	4,12	4,11	4,17	4,17	4,12	4,19	4,10	4,15	4,17	4,12
	Energy Efficiency (2)	%	150	149	151	155	153	158	162	175	161	167	164	162	165	161	163	164	169
	SEER with EC or ECH accessory (2)		4,13	4,11	4,17	4,22	4,15	4,23	4,34	4,55	4,56	4,55	4,55	4,55	4,56	4,55	4,56	4,55	4,55
	Energy Efficiency with EC or ECH accessory (2)	%	162	161	164	166	163	166	171	179	179	179	179	179	179	179	179	179	179
Heating	Heating capacity (3)	kW	228	255	283	310	338	369	401	441	510	564	620	684	776	861	962	1078	1210
	Absorbed power (3)	kW	73	83	90	103	108	121	132	141	164	182	202	223	249	282	312	349	383
	COP (3)		3,12	3,07	3,14	3,01	3,13	3,05	3,04	3,13	3,11	3,10	3,07	3,07	3,12	3,05	3,08	3,09	3,16
Heating (EN14511)	Heating capacity (3)	kW	228	255	283	311	338	370	402	442	511	565	621	685	777	862	963	1079	1211
	Absorbed power (3)	kW	73	83	90	103	108	122	133	142	165	183	203	224	250	283	313	350	384
	COP (3)		3,12	3,07	3,14	3,01	3,12	3,04	3,03	3,12	3,10	3,09	3,07	3,06	3,11	3,05	3,08	3,08	3,15
	SCOP (4)		3,20	3,21	3,22	3,21	3,22	3,21	3,22	3,21	3,22	3,19	3,19	3,19	3,19	3,19	3,19	3,19	3,19
	Energy Efficiency (4)	%	125	125	126	125	126	125	126	125	126	125	125	125	125	125	125	125	125
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	9,51	10,80	11,99	13,19	14,52	16,01	17,53	19,25	21,21	23,65	26,09	28,76	32,06	35,88	40,37	45,01	50,21
	Pressure drops	kPa	40	51	62	54	50	49	59	47	59	49	60	58	49	41	51	42	52
	Water connections	DN	80	80	80	80	80	80	80	80	80	80	80	80	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	152	166	179	191	216	233	250	274	316	350	375	422	485	545	598	676	746
	Max. starting current	A	276	299	347	359	349	401	418	407	484	518	543	600	662	759	812	938	1007
Unit with pump	Pump available static pressure	kPa	155	130	175	160	180	170	145	140	110	165	145	135	125	165	140	130	100
Unit with pump	Water connections	DN	100	100	100	100	100	100	100	100	100	100	100	150	150	150	150	150	150
Sound pressure	STD version (5)	dB(A)	70	70	70	72	72	72	73	73	72	73	75	76	76	76	76	76	77
	With SL accessory (5)	dB(A)	67	67	67	69	69	69	69	70	69	70	72	73	73	73	73	73	74
	SSL version (5)	dB(A)	64	64	64	66	65	65	67	66	66	67	69	70	70	69	70	---	---
Weights	Transport weight	kg	1654	1674	1763	1961	2199	2457	2566	2610	3179	3294	3463	3517	3682	4200	4518	4918	5044
Weights	Operating weight	kg	1670	1690	1780	1980	2220	2480	2590	2640	3210	3330	3500	3560	3730	4260	4580	4990	5120

Dimensions

			212	222	242	272	302	342	362	412	442	482	562	622	682	762	862	962	1102
L	STD	mm	2800	2800	2800	2800	4000	4000	4000	4000	5000	5000	5000	5000	5000	6200	6200	7200	7200
L	SSL	mm	2800	2800	2800	2800	4000	4000	4000	4000	5000	5000	5000	5000	6200	7200	7200	---	---
W	STD/SSL	mm	2200	2200	2200	2200	2200	2200	2200	2200	2200	2200	2200	2200	2200	2200	2200	2200	2200
H	STD/SSL	mm	2100	2100	2100	2100	2100	2100	2100	2100	2100	2100	2100	2100	2100	2100	2100	2100	2100

Notes

1 Chilled water from 12 to 7 °C, ambient air temperature 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, ambient air temperature 7 °C d.b./6 °C w.b.
4 Seasonal energy efficiency of heating at low temperature with average climatic conditions. According to EU Regulation n. 811/2013.
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.