AiWa L Natura

Air Source Heat pumps AiWa Natura

Compact air-to-water heat pump for heating, cooling and domestic hot water with the possibility for outdoor installation. A short closed refrigerant circuit with a silent scroll compressor controlled by inverter allows for capacity modulation in wide range. Monoblock design simplifies installation and helps for long-term stable operation.
Use for single-family houses and smaller buildings with a heat output requirement of up to 20 kW. The COMFORT range includes robust heat pump internal refrigerant circuit parts as well as all the measuring, distribution and control elements required by today's modern climate technology in single-family houses.
The primary source is the heat energy from the ambient air, which is blown by a silent fan in the shape of an owl's wing through a heat exchanger made of copper and aluminium.

Heat pump type: AiWa L Natura	07 R290	10 R290	14 R290
Product sheet
Article nr.	WA0e2102	WA0e2103	WA0e2104
Heating capacity [ kW ] EN 14511
A7 / W35	2.7 (2.7 ~ 8.5)	3.6 (3.6 ~ 11.4)	5.5 (5.5 ~ 17.3)
A2 / W35	3.3 (2.2 ~ 6.9)	4.4 (3.0 ~ 9.2)	6.8 (4.6 ~ 14.3)
A-7 / W34	4.7 (1.7 ~ 5.3)	6.3 (2.3 ~ 7.1)	10.0 (3.7 ~ 11.3)
A7 / W55	2.5 (2.5 ~ 7.8)	3.3 (3.3 ~ 10.5)	4.9 (4.9 ~ 15.7)
A2 / W55	3.0 (2.0 ~ 6.4)	4.1 (2.7 ~ 8.6)	6.2 (4.2 ~ 13.1)
A-7 / W52	4.5 (1.6 ~ 5.1)	6.1 (2.2 ~ 6.9)	9.5 (3.4 ~ 10.7)
Energy Efficiency Parameters and Performance ErP [ middle temperature region ]
Rated nominal heating capacity P rated [ kW ]	5.3	7.1	11.3
Energy class	A+++	A+++	A+++
SCOP	4.55	4.57	4.57
Seasonal energy efficiency η [ % ]	182.0	182.8	182.7
Bivalent point [ ºC ]	-7	-7	-7
Parameter of heat sink
Maximal flow temperature [ ºC ]	70	70	70
Minimal flow temperature [ ºC ]	25	25	25
Flow nominal [ m3/h ] [@35/30]	0.25 ~ 1.48	0.33 ~ 1.96	0.50 ~ 3.00
Pressure drop [ kPa ] [@35/30]	11	11	12
Nominal ∆T [ K ] [@W35°C]	5	5	5
Nominal ∆T [ K ] [@W55°C]	8	8	8
Nominal ∆T [ K ] [@W65°C]	10	10	10
Connection port size [ " ]	1"	1"	1.1/4"
Parameter of low temperature heat source
Minimal source temperature [ ºC ]	-22	-22	-22
Maximal source temperature [ ºC ]	40	40	40
Flow source nominal [ m3/h ]	440 ~ 2640	587 ~ 3520	887 ~ 5320
Pressure drop source [ kPa ]	0.018	0.021	0.025
Nominal ∆T source [ K ]	7	7	7
Connection port size source [ " ]
Electrical parameters
Voltage [ V ]	1~ 230/50	1~ 230/50	3~ 400/50
Safety protection [ A ]	C16	C20	C16
Current - nominal [ A ]	6.72	6.75	4.51
Current - maximal [ A ]	15.00	20.00	15.00
Current - Start [ A ]	ramp	ramp	ramp
Softstart	inverter	inverter	inverter
Sound information
Sound power - indoor Lw [ dB(A) ]
Sound power - outdoor Lw [ dB(A) ]	52	54	56
Sound pressure Lp in 1 meter [ dB(A) ]	44	46	48
Sound pressure Lp in 5 meter [ dB(A) ]	30	32	34
Sound pressure Lp in 10 meter [ dB(A) ]	24	26	28
Sound pressure Lp in 15 meter [ dB(A) ]	21	23	24

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