JWH 081-171 VV/H/P/A

A CLASS energy efficiency watercooled liquid Chillers with (Inverter) Screw compressor and plate exchangers

The liquid Chillers of the JWH 081-171 VV/H/P/A series, with A CLASS energy efficiency and HFO-R1234ze refrigerant, are designed to satisfy the needs of the service sector or industrial systems requiring high power.
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.
Equipped with latest generation Screw compressor and plate exchangers, these units have a series of accessories which are factory fitted or supplied separately. 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. Furthermore, accessories as the Inverter control on one compressor is also available for getting the highest efficiency at part load and a significant reduction of starting current.
Units are compliant to ErP 2021 European Regulations for comfort cooling application.

Versions

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

Power range

86,0-189 kW
25,0-54,0 Ton

Features

Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
Screw compressor with built-in oil separator, suction filter, crankcase heater, oil sight glass, thermal protection and stepless capacity steps.
Condenser AISI 316 stainless steel braze welded plates type with one circuit on the refrigerant side and one on the water side.
Evaporator AISI 316 stainless steel braze welded plates type 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 discharge and liquid line.
Electronic expansion valve.
Electronic high and low pressure gauges.
HFO-R1234ze 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
PV2 2-Way electronic pressostatic valve
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
RT Total heat recovery
FE Antifreeze heater for evaporator
FO Antifreeze heater for tank and pipes
IQ Inverter on one compressor
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
SPU Inertial tank and single circulating pump
SPD Inertial tank and double circulating pump
AG Rubber shock absorbers
AG1 Rubber shock absorbers for SPU and SPD modules
AM Spring shock absorbers
AM1 Spring shock absorbers for SPU and SPD modules