TWH/DR 291÷1541 TT/Y

A CLASS energy efficiency watercooled liquid chillers with TURBOCOR (magnetic levitation) compressors and flooded shell and tube exchangers for dry-cooler operation

The innovative TWH/DR 291÷1541 TT/Y units for Dry-Cooler operation, featuring A CLASS energy efficiency, are designed to provide an effective solution for highly selective system needs. Efficiency at partial loads, low breakaway starting current, low levels of operational noise, reduced weight, specific design and handling of every manufacturing aspect, make the series the top of the range.
Using TURBOCOR dynamic partial-load oil-free magnetic levitation compressors, managed by the TURBOSOFT self-adaptive electronic control and flooded shell and tube evaporators, provide high energy performance, with unbeatable SEER values, with minimum water content, and an excellent silent functioning. Compared to traditional Screw compressor units, TURBOLINE units have low operational costs during their entire use, with savings that can even reach 50%.
The units are compliant to the 2021 ErP Regulation.

On request, units can be supplied with R513A refrigerant.

Versions

TWH/DR - Cooling only for Dry-Cooler

Power range

298-1584 kW
85.0-450 Ton

Features

Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
Semi-hermetic centrifugal compressors with dual Turbocor turbine, oil free, magnetic rising rotor, thermal protection, continuous capacity adjustment system thanks to built-in INVERTER, automatic anti-cavitation system. The power circuit of the compressor is fitted with a set of electrolytic condensers to control the rising in the event of a power failure, reactor for the power factor correction, EMI filter for electromagnetic compatibility.
Shell and tube type condenser, with easily removable cast iron heads to enable access for maintenance operations.
High efficiency flooded shell and tube type evaporator, with one circuit on the refrigerant side and one on the water side, complete with water differential pressure switch.
Cooling circuit shut-off valves on suction, discharge and liquid line.
Electronic expansion valve.
Electronic high and low pressure gauges.
R134a refrigerant. On request R513A refrigerant.
Electrical board includes: main on-off switch with door lock, fuses, electronic/digital overload device to protect the compressors, interface relay and terminals for external connections.
TURBOSOFT control and regulation system, equipped with RS485 serial interface, can be supplied with an optional Web Monitoring device for remote monitoring via GPRS/EDGE/3G/TCP-IP network.

Accessories

Factory fitted accessories

IM Automatic circuit breakers
HR Desuperheater
HRT Total heat recovery
FE Antifreeze heater for evaporator
TS Touch Screen Interface
WM Web Monitoring - Wireless remote monitoring (GPRS/EDGE/4G/TCP-IP)
IST Modbus TCP/IP protocol, Ethernet port
ISB BACnet MSTP protocol, RS485 serial interface
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
CP Potential free contacts
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
FL Flow switch

Technical data

			291	391	581	771	871	1161	1541
Cooling	Cooling capacity (1)	kW	298	395	598	792	894	1185	1584
	Absorbed power (1)	kW	70	92	141	186	211	277	372
	EER (1)		4,26	4,29	4,24	4,26	4,24	4,28	4,26
Cooling (EN14511)	Cooling capacity (1)	kW	297	394	596	789	891	1180	1579
	Absorbed power (1)	kW	71	94	144	189	214	282	376
	EER (1)		4,18	4,19	4,14	4,17	4,16	4,18	4,20
	SEER (2)		8,15	8,45	8,66	8,40	8,40	8,67	9,24
	Energy Efficiency (2)	%	318	330	338	328	328	339	362
Compressor	Quantity	n°	1	1	2	2	3	3	4
	Refrigerant circuits	n°	1	1	1	1	1	1	1
	Capacity steps	n°	Stepless	Stepless	Stepless	Stepless	Stepless	Stepless	Stepless
Evaporator	Water flow	l/s	14,24	18,87	28,57	37,84	42,71	56,62	75,68
	Pressure drops	kPa	44	45	48	50	54	56	42
	Water connections	DN	100	100	125	125	150	150	200
Condenser	Water flow	l/s	19,20	25,40	38,55	51,02	57,64	76,26	102
	Pressure drops	kPa	58	52	57	53	59	52	40
	Water connections	DN	100	100	125	125	150	150	200
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
	Max. running current	A	145	231	290	462	435	693	924
	Max. starting current	A	2	2	147	233	292	464	695
Sound power	STD version (3)	dB(A)	90	92	93	95	95	96	97
Sound pressure	STD version (4)	dB(A)	72	74	75	76	76	77	78
Weights	Transport weight	kg	1840	2115	2955	3430	3855	4415	7555
Weights	Operating weight	kg	1980	2300	3220	3790	4240	4940	8450

Dimensions

			291	391	581	771	871	1161	1541
L	STD	mm	3400	3400	3400	3400	3400	3450	4500
W	STD	mm	1100	1150	1150	1250	1700	1800	1750
H	STD	mm	1800	1850	1950	2000	2000	2050	2100

Notes

1 Chilled water from 12 to 7 °C, temperature at the condenser (with ethylene glycol at 35%) from 40 to 45 °C.
2 Seasonal energy efficiency of cooling at low temperature. According to EU Regulation n. 2016/2281.
3 Sound power level according to Standard ISO 3744 and Eurovent 8/1.
4 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.