JWA 24÷40 S/IK/P/A

A CLASS energy efficiency aircooled liquid Chillers and Heat Pumps with axial fans, Inverter Scroll compressor and plate exchanger

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The liquid Chillers and Heat Pumps of the JWA 24÷40 S/IK/P/A series, with R410A refrigerant, are designed to satisfy the needs of small and medium domestic and service sector environments.
With a peraluman structure corrosion-resistant over time, these units can be combined with Fan Coil units or with intermediate heat exchangers for process cooling applications.
All units feature A CLASS energy efficiency and are equipped with Inverter control on Scroll compressor for a better efficiency at partial loads (SEER/IPLV/SCOP). The Microchannel condensing coil, available on the dedicated version, ensures an even higher efficiency (high EER), having a better heat exchange than traditional coils.
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 coil
JWA/WP - Reversible heat pump

Power range

26.0-48.0 kW
7.3-14.0 Ton

Features

Structure with supporting frame, in peraluman and galvanized sheet. Sound-proofed compressor compartment.
DC INVERTER Scroll compressor with oil sight glass, internal overheat protection, crankcase heater and soundproofing cover.
Axial fans with low ventilation and special wing profile, directly coupled to external rotor motors.
Condenser made of copper tube and aluminum finned coils or aluminium MICROCHANNEL coils.
Evaporator AISI 316 stainless steel braze welded plates type, complete with water differential pressure switch. On the Heat Pump units it is always installed an antifreeze heater.
Electronic expansion valve.
R410A refrigerant. On request R452B or R454B refrigerant.
Electrical board includes: main switch with door safety interlock, fuses 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 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 and high and low pressure transducers on cooling circuit.
Functioning in heating mode with outside air temperature down to -15 °C.
Microprocessor control and regulation system.
Advanced functions: remote set-point with 0-10V signal, remote set-point with 4-20mA signal, remote signal for second set-point activation, demand limit from digital input, management of hybrid systems, management of domestic hot water production.

Accessories

Factory fitted accessories

BT Low water temperature kit
TX Coil with pre-coated fins
TXB Coil with epoxy treatment
PS Single circulating pump
GS Single circulating pump gasket for glycol >30%

Loose accessories

CR Remote control panel
IS Modbus RTU protocol, RS485 serial interface
RP Coils protection metallic guards
FP Coils protection metallic guards with filter
AG Rubber shock absorbers

Technical data

			24	27	34	40
Cooling STD versions	Cooling capacity (1)	kW	25,8	30,5	35,9	42,3
	Absorbed power (1)	kW	8,0	9,5	11,3	13,4
	EER (1)		3,22	3,21	3,18	3,16
Cooling STD versions (EN14511)	Cooling capacity (1)	kW	25,7	30,4	35,8	42,2
	Absorbed power (1)	kW	8,1	9,6	11,4	13,6
	EER (1)		3,19	3,16	3,13	3,11
	SEER (2)		4,42	4,16	4,21	4,22
	Energy Efficiency (2)	%	174	163	165	166
Cooling MC versions	Cooling capacity (1)	kW	25,8	30,5	35,9	42,3
	Absorbed power (1)	kW	7,9	9,4	11,2	13,3
	EER (1)		3,27	3,24	3,21	3,18
Cooling MC versions (EN14511)	Cooling capacity (1)	kW	25,7	30,4	35,8	42,2
	Absorbed power (1)	kW	8,0	9,5	11,3	13,5
	EER (1)		3,23	3,20	3,16	3,13
	SEER (2)		4,48	4,21	4,26	4,27
	Energy Efficiency (2)	%	176	165	167	168
Heating STD versions	Heating capacity (3)	kW	28,7	34,3	40,4	48,0
	Absorbed power (3)	kW	8,1	9,9	11,8	14,0
	COP (3)		3,54	3,46	3,42	3,43
Heating STD versions (EN14511)	Heating capacity (3)	kW	28,8	34,4	40,5	48,1
	Absorbed power (3)	kW	8,2	10,1	12,0	14,2
	COP (3)		3,51	3,42	3,37	3,38
	SCOP (4)		3,74	3,75	3,54	3,74
	Energy Efficiency (4)	%	147	147	139	147
	Energy Class (5)		A+	A+	A+	A+
	SCOP (6)		2,95	2,96	2,93	3,07
	Energy Efficiency (6)	%	115	115	114	120
	Energy Class (7)		A+	A+	A+	A+
Compressor	Quantity	n°	1	1	1	1
Evaporator	Water flow	l/s	1,23	1,46	1,71	2,02
	Pressure drops	kPa	20	29	31	31
	Water connections	"G	1 ¼"	1 ¼"	1 ¼"	1 ¼"
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	21	24	27	34
	Max. starting current	A	11	14	15	18
Unit with pump	Pump available static pressure	kPa	140	115	150	105
Unit with pump	Water connections	"G	1 ¼"	1 ¼"	1 ¼"	1 ¼"
Sound pressure	STD versions (8)	dB(A)	60	61	62	62
Sound pressure	MC versions (8)	dB(A)	59	60	61	61
Weights	Transport weight	kg	224	239	269	283
Weights	Operating weight	kg	229	244	275	289

Dimensions

			24	27	34	40
L	STD/MC	mm	1850	1850	1850	1850
W	STD/MC	mm	1000	1000	1000	1000
H	STD/MC	mm	1300	1300	1300	1300

Notes

1 Chilled water from 12 to 7 °C, ambient air temperature 35 °C.
2 Seasonal energy efficiency of cooling at low temperature. According to EU Regulation n. 2016/2281.
3 Heated water from 40 to 45 °C, ambient air temperature 7 °C d.b./6 °C w.b.
4 Seasonal energy efficiency of heating at low temperature with average climatic conditions. According to EU Regulation n. 813/2013.
5 Seasonal energy efficiency class of heating at low temperature with average climatic conditions. According to EU Regulation n. 811/2013.
6 Seasonal energy efficiency of heating at medium temperature with average climatic conditions. According to EU Regulation n. 813/2013.
7 Seasonal energy efficiency class of heating at medium temperature with average climatic conditions. According to EU Regulation n. 811/2013.
8 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
N.B. (1) Data of MC version are specified on technical brochure.
N.B. (2) Weights of WP version are specified on technical brochure.