TWA/WP 212÷682 S/K/P/A

A CLASS energy efficiency aircooled reversible Heat Pumps with axial fans, Scroll compressors and plate exchanger

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The TWA/WP 212÷682 S/K/P/A reversible Heat Pumps are characterized by A CLASS energy efficiency.
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.
The units are designed for hot water production up to 55°C.
The units are compliant to the ErP Regulation.

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

Versions

TWA/WP - Reversible Heat Pump
TWA/WP/SSL - Super silenced reversible Heat Pump

Power range

227-762 kW
65.0-217 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 units it is always installed an antifreeze heater.
Cooling circuit shut-off valve on liquid line in 302÷682 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.
Functioning in heating mode with outside air temperature down to -15 °C.
Microprocessor control and regulation system.

Accessories

Factory fitted accessories

ISB BACnet MSTP protocol, RS485 serial interface
GS Single circulating pump gasket for glycol >30%
GD Double circulating pump gaskets for glycol >30%
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
PDI Inverter double circulating pump
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
IM Automatic circuit breakers
PD Double circulating pump
PSI Inverter single circulating pump
PS Single circulating pump
EW External water connections
TX Coil with pre-coated fins
RT Total heat recovery
DS Desuperheater
ECH EC Inverter fans with high available static pressure
EC EC Inverter fans
BT Low water temperature kit
CC Condensing control down to -20 °C
CT Condensing control down to 0 °C
RFL Cooling circuit shut-off valve on liquid line
RFM Cooling circuit shut-off valve on discharge line
SL Unit silencement

Loose accessories

CR Remote control panel
RP Coils protection metallic guards
AG Rubber shock absorbers
AM Spring shock absorbers

Technical data

			212	222	242	272	302	342	362	412	442	482	562	622	682
Heating	Heating capacity (1)	kW	227	256	272	294	342	369	389	420	476	532	566	677	762
Heating	COP (1)		3,44	3,41	3,36	3,46	3,35	3,48	3,47	3,36	3,38	3,39	3,35	3,35	3,37
Heating (EN14511)	Heating capacity (1)	kW	227	257	272	294	343	370	390	421	477	533	567	678	763
	COP (1)		3,38	3,35	3,31	3,41	3,30	3,44	3,42	3,31	3,33	3,35	3,31	3,32	3,34
	SCOP (2)		3,40	3,47	3,40	3,39	3,42	3,39	3,40	3,41	3,37	3,41	3,36	3,38	3,48
	Energy Efficiency (2)	%	133	136	133	133	134	133	133	133	132	133	131	132	136
Cooling	Cooling capacity (3)	kW	195	217	239	259	294	322	339	359	421	475	512	597	671
Cooling	EER (3)		2,91	2,89	3,06	3,05	2,94	3,01	3,00	2,83	2,92	2,93	2,98	2,88	2,78
Cooling (EN14511)	Cooling capacity (3)	kW	195	217	239	259	294	322	339	359	421	475	512	597	671
	EER (3)		2,87	2,85	3,02	3,01	2,90	2,98	2,97	2,79	2,89	2,91	2,95	2,86	2,76
	SEER (4)		4,05	4,06	4,10	4,11	4,07	4,07	4,08	4,35	4,42	4,45	4,55	4,55	4,55
	Energy Efficiency (4)	%	159	159	161	161	160	160	160	171	174	175	179	179	179
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
	Refrigerant circuits	n°	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
Evaporator	Water flow	l/s	9,29	10,34	11,39	12,34	14,01	15,35	16,16	17,11	20,07	22,64	24,40	28,45	31,98
	Pressure drops	kPa	44	55	42	38	49	37	41	46	46	32	37	33	30
	Water connections	DN	80	80	80	80	80	80	80	80	80	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
	Max. running current	A	158	171	187	202	231	247	262	283	329	366	397	462	520
	Max. starting current	A	281	304	354	370	363	414	429	415	497	533	564	650	707
Unit with pump	Pump available static pressure	kPa	155	130	205	195	185	185	175	160	135	185	175	160	150
Unit with pump	Water connections	DN	100	100	100	100	100	100	100	100	100	100	100	150	150
Sound pressure	STD version (5)	dB(A)	72	71	71	72	72	73	74	74	76	76	76	76	78
	With SL accessory (5)	dB(A)	69	68	68	69	69	70	71	71	73	73	73	73	75
	SSL version (5)	dB(A)	65,0	65,0	65,0	66,0	66,0	67,0	67,0	67,0	68,0	69,0	70,0	---	---
Weights	Transport weight	kg	1954	2291	2409	2437	2567	2820	2830	3019	3164	3702	3832	4660	4698
Weights	Operating weight	kg	1970	2310	2430	2460	2590	2850	2860	3050	3200	3750	3880	4720	4770

Dimensions

			212	222	242	272	302	342	362	412	442	482	562	622	682
L	STD	mm	2800	4000	4000	4000	4000	5000	5000	5000	5000	6200	6200	7200	7200
L	SSL	mm	4000	4000	5000	5000	5000	5000	5000	5000	6200	6200	7200	---	---
W	STD/SSL	mm	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

Notes

1 Heated water from 40 to 45 °C, ambient air temperature 7 °C d.b./6 °C w.b.
2 Seasonal energy efficiency of heating at low temperature with average climatic conditions. According to EU Regulation n. 813/2013.
3 Chilled water from 12 to 7 °C, ambient air temperature 35 °C.
4 Seasonal energy efficiency of cooling at low temperature. According to EU Regulation n. 2016/2281.
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 version are specified on technical brochure.