CRE-TRH 1250/1÷41550/1

A CLASS energy efficiency aircooled liquid Chillers with axial fans, Turbocor (magnetic levitation) compressors, microchannel condensing coils and flooded shell and tube exchanger

The innovative CRE-TRH 1250/1÷41550/1 units, with 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.
The use of TURBOCOR dynamic partial-load oil-free magnetic levitation compressors managed by the TURBOSOFT self-adaptive electronic control, of flooded shell & tube evaporator and innovative Microchannel heat exchangers, results in a high energy efficiency with unequalled SEPR values, with minimum water content, and an excellent silent functioning. Compared to traditional units, equipped with Screw compressors, CRE-TRH 1250/1÷41550/1 units have low operational costs during their entire operating period, even lower than 50%.
Units are featured as standard with an electronic proportional device that ensures efficient continuous functioning of the unit with outside air temperature down to –20 °C.

Versions

CRE-TRH - Cooling only

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.
Axial fans directly coupled to an electric motor with external rotor.
Condenser made of aluminium MICROCHANNEL coils.
High efficiency flooded shell and tube type evaporator, with one independent 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 and thermocontacts for fans, interface relay and terminals for external connections.
Condensing Control is included: electronic proportional device that ensures efficient and continuous functioning of the unit with outside air temperature down to –20 °C. It also allows to reduce the sound level especially at night. It consists of a fans speed controller with continuous speed regulation, high and low pressure transducers on cooling circuit and an electrical heater on electrical board.
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
DPS Double power supply
EC EC Inverter fans
ECH EC Inverter fans with high available static pressure
TXB Coil with epoxy treatment
EW External water connections
PU Single circulating pump
PD Double circulating pump
TS Touch Screen Interface
WM Web Monitoring - Wireless remote monitoring (GPRS/EDGE/3G/TCP-IP)
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
CP Potential free contacts

Loose accessories

MN High and low pressure gauges
CR Remote control panel
RP Coils protection metallic guards
AG Rubber shock absorbers
AM Spring shock absorbers
FL Flow switch

Technical data

			1250/1	1340/1	2590/1	2750/1	3890/1	31140/1	41550/1
Cooling	Cooling capacity (1)	kW	293	374	586	750	894	1151	1545
	Absorbed power (1)	kW	74	92	149	186	227	277	375
	EER		3,96	4,07	3,93	4,03	3,94	4,16	4,12
Cooling (EN14511)	Cooling capacity (1)	kW	291	372	584	748	893	1148	1542
	Absorbed power (1)	kW	76	94	151	188	228	280	378
	EER (1)		3,83	3,96	3,87	3,98	3,92	4,10	4,08
	SEPR (2)		7,11	7,42	7,15	7,15	7,38	7,38	7,24
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	14,00	17,87	28,00	35,83	42,71	54,99	73,82
	Pressure drops	kPa	50	59	59	63	53	57	43
	Water connections	DN	100	100	125	125	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
	Max. running current	A	173	180	339	347	505	520	678
	Max. starting current	A	25	32	191	199	357	372	530
Unit with pump	Pump available static pressure	kPa	105	65	80	95	60	80	95
Unit with pump	Water connections	DN	100	100	150	150	150	150	200
Sound pressure	STD version (3)	dB(A)	69	69	70	70	70	70	71
Weights	Transport weight	kg	2530	2900	3890	4230	5710	6220	7390
Weights	Operating weight	kg	2590	2970	3990	4350	5870	6410	7690

Dimensions

			1250/1	1340/1	2590/1	2750/1	3890/1	31140/1	41550/1
L	STD	mm	4000	5000	6200	7200	8400	10050	11700
W	STD	mm	2200	2200	2200	2200	2200	2200	2200
H	STD	mm	2100	2100	2100	2100	2500	2500	2500

Notes

1 Chilled water from 18 to 13 °C, ambient air temperature 35 °C.
2 Efficienza energetica stagionale di raffreddamento di processo ad alta temperatura secondo il Regolamento UE n. 2016/2281.
3 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.