TWH 322÷2582 VV/Y

Energy efficiency watercooled liquid Chillers with (Inverter) Screw compressors and shell and tube exchangers

The liquid Chillers of the CWW/Y 1302-B÷9003-B series, with R134a refrigerant, are designed to satisfy the needs of the service sector or industrial systems requiring high power.
Equipped with latest generation Screw compressors, shell and tube exchangers and connections for condensation with cooling tower water or well water or with a Dry-Cooler, these units can also be produced in super silent versions. Furthermore, they have a series of accessories which are factory fitted or supplied separately such as heat recovery in series or in parallel, soft start and, if necessary, a device for operating a Heat Pump. Designed and produced to optimize the layout of each component so as to make any necessary maintenance operations more convenient, these units have an essential and compact structure intended for indoor installation.
The models 1302-B÷1702-B are compliant to ErP 2021 Regulations. The models 1902-B÷9002-B are compliant to ErP 2021 Regulations with ID accessory (Inverter on all compressors).
On request, units can be supplied with R513A refrigerant.

Versions

TWH - Cooling only
TWH/SSL - Super silenced cooling only

Power range

267-2349 kW
76,0-668 Ton

Features

Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
Screw compressors with built-in oil separator, suction filter, crankcase heater, oil sight glass, thermal protection and stepless capacity steps.
Shell and tube type condenser, with easily removable cast iron heads to enable access for maintenance operations. Each cooling circuit is supplied with an independent condenser. Water connections for cooling tower and Dry-Cooler operation; on request for well water.
Shell and tube evaporator with two independent circuits on the refrigerant side and one on the water side, complete with water differential pressure switch.
Cooling circuit shut-off valves on discharge and liquid line.
Electronic expansion valve.
Electronic high and low pressure gauges.
R134a refrigerant. On request R513A refrigerant.
Electrical board includes: main switch with door safety interlock, fuses, thermal protection relays for compressors.
Microprocessor control and regulation system.

Accessories

Factory fitted accessories

IM Automatic circuit breakers
PV3 3-Way electronic pressostatic valve
DSV Double relief safety valve with changeover switch on the high pressure side for each refrigerant circuit
DSVHL Double relief safety valve with changeover switch on the high and on the low pressure side of each refrigerant circuit
BT Low water temperature kit
HR Desuperheater
HRT Total heat recovery
FE Antifreeze heater for evaporator
II Inverter on one compressor and soft start for other compressors
ID Inverter on all compressors
SS Soft start
DP Device for heat pump operation
HTW Device for high temperature hot water production.
WM Web Monitoring - Wireless remote monitoring (GPRS/EDGE/4G/TCP-IP)
IS Modbus RTU protocol, RS485 serial interface
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