TWA 212÷1102 S/K/P

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

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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.
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

ISB BACnet MSTP protocol, RS485 serial interface
GD Double circulating pump gaskets for glycol >30%
FE Antifreeze heater for evaporator
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
GS Single circulating pump gasket for glycol >30%
ISBT BACnet IP protocol, Ethernet port
ISS SNMP protocol, Ethernet port
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
MN High and low pressure gauges
DS Desuperheater
SL Unit silencement
RFM Cooling circuit shut-off valve on discharge line
RFL Cooling circuit shut-off valve on liquid 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
IM Automatic circuit breakers
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

Loose accessories

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
Cooling	EER (1)		2,88	2,82	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	199	226	251	276	304	335	367	403	444	495	545	601	670	750	844	941	1050
	EER (1)		2,85	2,79	2,90	2,89	2,88	2,93	2,96	3,01	2,82	2,88	2,93	2,82	2,73	2,71	2,76	2,78	2,85
	SEER (2)		3,61	3,66	3,73	3,81	3,79	3,86	4,01	4,08	4,14	4,14	4,20	4,24	4,19	4,13	4,19	4,15	4,19
	Energy Efficiency (2)	%	141	143	146	149	149	151	157	160	163	163	165	167	165	162	165	163	165
	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
Heating	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	256	284	311	339	370	402	442	511	565	621	685	777	862	963	1079	1211
	COP (3)		3,08	3,02	3,08	2,96	3,08	3,00	2,98	3,08	3,06	3,05	3,02	3,01	3,07	3,02	3,04	3,05	3,11
	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	9,48	10,77	11,96	13,16	14,49	15,97	17,49	19,21	21,16	23,59	26,02	28,69	31,98	35,79	40,28	44,90	50,09
	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	158	171	179	195	223	239	254	283	322	358	381	439	504	559	605	682	751
	Max. starting current	A	281	304	346	362	355	406	421	415	489	525	548	626	692	771	818	917	986
Unit with pump	Pump available static pressure	kPa	160	130	175	165	180	170	145	140	110	165	145	135	130	165	140	135	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	72	73	73	73	75	76	76	76	76	76	77
	With SL accessory (5)	dB(A)	67	67	67	69	69	69	69	69	70	70	72	73	73	73	73	73	74
	SSL version (5)	dB(A)	64,0	65,0	65,0	65,0	65,0	66,0	66,0	67,0	67,0	68,0	69,0	70,0	70,0	69,0	70,0	---	---
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.