TWH/DR 341÷2061 TT/H

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 341÷2061 TT/H units for Dry-Cooler operation, featuring A CLASS energy efficiency and HFO-R1234ze refrigerant, are designed to provide an effective solution to highly selective system needs. The latest generation refrigerant HFO-R1234ze, with GWP<1 (Global warming Potential), is the most environmentally sustainable refrigerant on the market, and meets the strictest international environmental regulations. Furthermore, thanks to Turbocor compressors, the units perform with top efficiency at partial loads, low inrush currents, an excellent silent functioning and reduced weight.
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, units have low operational costs during their entire use, with a savings that can even reach 50%.
The units are compliant to the 2021 ErP Regulation.

Versions

TWH/DR - Cooling only for Dry-Cooler

Power range

301-1802 kW
86.0-512 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.
HFO-R1234ze 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

			341	681	1031	1371	1711	2061
Cooling	Cooling capacity (1)	kW	301	603	899	1203	1499	1802
	Absorbed power (1)	kW	71	142	212	283	354	424
	EER (1)		4,24	4,25	4,24	4,25	4,23	4,25
Cooling (EN14511)	Cooling capacity (1)	kW	300	601	896	1200	1494	1797
	Absorbed power (1)	kW	72	144	215	286	359	429
	EER (1)		4,17	4,17	4,17	4,20	4,16	4,19
	SEER (2)		8,55	8,67	8,83	9,53	9,75	9,77
	Energy Efficiency (2)	%	334	339	345	373	382	383
Compressor	Quantity	n°	1	2	3	4	5	6
	Refrigerant circuits	n°	1	1	1	1	1	1
	Capacity steps	n°	Stepless	Stepless	Stepless	Stepless	Stepless	Stepless
Evaporator	Water flow	l/s	14,38	28,81	42,95	57,48	71,62	86,10
	Pressure drops	kPa	41	42	41	30	47	44
	Water connections	DN	100	125	150	150	200	200
Condenser	Water flow	l/s	19,4	38,8	58,0	77,7	96,7	116
	Pressure drops	kPa	55	56	55	56	62	58
	Water connections	DN	100	125	150	150	200	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
	Max. running current	A	150	300	450	600	750	900
	Max. starting current	A	5	155	305	455	605	755
Sound power	STD version (3)	dB(A)	90	93	95	96	97	98
Sound pressure	STD version (4)	dB(A)	72	74	76	76	77	78
Weights	Transport weight	kg	1849	2919	4065	6587	7942	11716
Weights	Operating weight	kg	1990	3200	4510	7340	9040	13460

Dimensions

			341	681	1031	1371	1711	2061
L	STD	mm	3400	3400	3450	4550	5500	6500
W	STD	mm	1100	1150	1800	1800	1800	1800
H	STD	mm	1800	1950	2050	2100	2100	2150

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.