JWA 051÷172 S/IK/P/A

High efficiency air cooled liquid Chillers and Heat Pumps with axial fans, Inverter Scroll compressors and plate exchanger

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The units are compliant to the ErP Regulation.
On request, units can be supplied with R452B or R454B refrigerant.

Versions

JWA - Cooling only
JWA/MC - Cooling only with MICROCHANNEL condensing coil
JWA/WP - Reversible Heat Pump
JWA/SSL - Super silenced cooling only
JWA/MC/SSL - Super silenced cooling only with MICROCHANNEL condensing coil
JWA/WP/SSL - Super silenced reversible Heat Pump

Power range

50,0-179 kW
14,0-51,0 Ton

Features

Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
DC INVERTER Scroll and ON-OFF Scroll compressors with oil sight glass, internal overheat protection and crankcase heater.
Axial fans directly coupled to an electric motor with external rotor.
Condenser made of copper tube and aluminum finned coil or aluminium MICROCHANNEL coil.
Evaporator AISI 316 stainless steel braze welded plates type with one circuit on the refrigerant side and one on the water side in 051÷131 models; with two independent circuits on the refrigerant side and one on the water side in 152÷172 models, complete with water differential pressure switch. On the Heat Pump units it is always installed an antifreeze heater.
Electronic expansion valve.
Electronic high and low pressure gauges.
R410A refrigerant. On request R452B or R454B refrigerant.
Electrical board includes: main switch with door safety interlock, fuses, thermal protection relays for compressors and thermocontacts for fans.
Condensing Control is included: electronic proportional device that ensures efficient and continuous functioning of the unit with outside air temperature down to –20 °C in cooling mode. 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.
Functioning in heating mode with outside air temperature down to -15 °C.
Microprocessor control and regulation system.

Accessories

Factory fitted accessories

IM Automatic circuit breakers
RE Adjustable minimum/maximum voltage and phase control relay
SL Unit silencement
RFM Cooling circuit shut-off valve on discharge line
RFL Cooling circuit shut-off valve on liquid line
BT Low water temperature kit
EC EC Inverter fans
ECH EC Inverter fans with high available static pressure
DS Desuperheater
RT Total heat recovery
TX Coil with pre-coated fins
TXB Coil with epoxy treatment
PS Single circulating pump
PSI Inverter single circulating pump
PD Double circulating pump
PDI Inverter double circulating pump
GS Single circulating pump gasket for glycol >30%
GD Double circulating pump gaskets for glycol >30%
FE Antifreeze heater for evaporator
FN Antifreeze heater for pipes
FG Antifreeze heater for single pump and pipes
FM Antifreeze heater for double pump and pipes
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
MN High and low pressure gauges

Loose accessories

CR Remote control panel
RP Coils protection metallic guards
FP Coils protection metallic guards with filter
AG Rubber shock absorbers
AM Spring shock absorbers