JWA/FC 24÷40 S/K/P

Aircooled liquid Chillers Free-Cooling with axial fans, Scroll compressor and plate exchanger

The liquid Chillers of the JWA/FC 24÷40 S/K/P series, with R410A refrigerant, offer innovative technology to meet the needs of systems for both domestic as well as industrial applications requiring the production of cooled water continuously year-round.
During the cold months, in the FREE-COOLING operation mode, the return liquid of the system is cooled directly by forced convection of outdoor air through the condensing coil, thus saving energy by not operating the unit's Scroll compressors. A 3-way valve system is controlled by the electronic microprocessor controller, allowing functioning in CHILLER, FREE-COOLING or MIXED (simultaneously CHILLER and FREE-COOLING) modes.
The units are compliant to the 2021 ErP Regulation for process cooling application.

Versions

JWA/FC - Cooling only
JWA/FC/SP - Cooling only with tank and pump

Power range

28.0-43.0 kW
7.9-12.0 Ton

Features

Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
Scroll compressors with oil sight glass, internal overheat protection and crankcase heater.
Axial fans with low ventilation and special wing profile, directly coupled to external rotor motors.
Condenser made of copper tubes and aluminium finned coil combined with FREE-COOLING coil.
Evaporator AISI 316 stainless steel braze welded plates type, complete with water differential pressure switch.
R410A refrigerant.
Electrical board includes: main switch with door lock device, fuses, compressor and pump remote control switch.
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.
Water circuit for SP version includes: insulated tank, circulating pump, safety valve, gauge and expansion vessel.
Microprocessor control and regulation system.

Accessories

Factory fitted accessories

BT Low water temperature kit
TX Coil with pre-coated fins
PS Single circulating pump
GS Single circulating pump gasket for glycol >30%
IS Modbus RTU protocol, RS485 serial interface

Loose accessories

CR Remote control panel
RP Coils protection metallic guards
AG Rubber shock absorbers

Technical data

			24	27	34	40
Cooling	Cooling capacity (1)	kW	27,9	31,4	37,3	42,8
	Absorbed power (1)	kW	9,5	11,0	13,9	15,6
	EER (1)		2,94	2,85	2,68	2,74
Cooling (EN14511)	Cooling capacity (1)	kW	27,5	30,9	36,7	42,1
	Absorbed power (1)	kW	9,9	11,5	14,5	16,3
	EER (1)		2,78	2,69	2,53	2,58
	SEPR (2)		5,61	5,62	5,21	5,22
Free-Cooling cycle	Air temperature (3)	°C	-1,7	-2,7	0,5	-1,2
Free-Cooling cycle	Absorbed power (3)	kW	0,98	0,98	1,96	1,96
Compressor	Quantity	n°	1	1	1	1
Water circuit.	Water flow	l/s	1,55	1,74	2,07	2,37
	Pressure drops	kPa	117	142	132	141
	Water connections	"G	1"	1"	1"	1"
Electrical characteristics	Power supply	V/Ph/Hz	400/3+N/50	400/3+N/50	400/3+N/50	400/3+N/50
	Max. running current	A	20	22	29	32
	Max. starting current	A	144	144	162	201
Unit SP version	Water flow	l/s	1,55	1,74	2,07	2,37
	Pump available static pressure	kPa	109	152	150	129
	Tank water volume	l	100	100	100	100
	Water connections	"G	1"	1"	1"	1"
Sound pressure	STD/SP version (4)	dB(A)	60	61	61	61
Weight STD versions	Transport weight	kg	415	430	470	485
Weight STD versions	Operating weight	kg	437	452	499	515

Dimensions

			24	27	34	40
L	STD/SP	mm	1850	1850	1850	1850
W	STD/SP	mm	900	900	900	900
H	STD/SP	mm	1840	1840	1840	1840

Notes

1 Chilled water (with ethylene glycol at 30%) from 15 to 10 °C, ambient air temperature 35 °C.
2 Seasonal energy efficiency of high temperature process cooling according to EU Regulation No. 2016/2281.
3 Ambient air temperature at wich the cooling capacity indicated in point (1) is reached.
4 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.