Air Source Heat pumps AiWa H EVI Urban Outdoor

Compact air-to-water heat pump for heating, cooling and domestic hot water with the possibility of installation either in the utility room or outdoors. A short closed refrigerant circuit with a silent scroll compressor at the bottom under the fan 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 H Outdoor 18 EVI 23 EVI 27 EVI
Product sheet
Article nr. WA0e1355 WA0e1356 WA0e1358
Heating capacity [ kW ] EN 14511
A7 / W35 20.7 26.0 29.0
A2 / W35 17.6 22.2 24.7
A-7 / W34 14.8 18.4 20.3
A7 / W55 21.5 26.5 29.3
A2 / W55 18.5 23.0 25.2
A-7 / W52 15.6 19.3 21.0
Energy Efficiency Parameters and Performance ErP [ middle temperature region ]
Rated nominal heating capacity P rated [ kW ] 16.7 20.8 23.0
Energy class A+++ A+++ A+++
SCOP 4.37 4.24 4.37
Seasonal energy efficiency η [ % ] 174.8 169.6 174.7
Bivalent point [ ºC ] -7 -7 -7
Parameter of heat sink
Maximal flow temperature [ ºC ] 65 65 65
Minimal flow temperature [ ºC ] 25 25 25
Flow nominal [ m3/h ] [@35/30] 3.59 4.49 5.00
Pressure drop [ kPa ] [@35/30] 15 14 16
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 [ " ] 1.1/4" 1.1/4" 1.1/2"
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 ] 6470 8030 9060
Pressure drop source [ kPa ] 0.024 0.032 0.036
Nominal ∆T source [ K ] 7 7 7
Connection port size source [ " ]
Electrical parameters
Voltage [ V ] 3~ 400/50 3~ 400/50 3~ 400/50
Safety protection [ A ] C25 C32 C32
Current - nominal [ A ] 9.32 11.80 12.30
Current - maximal [ A ] 16.00 18.60 21.00
Current - Start [ A ] 18.9 29.7 32.12
Softstart MCI 15 MCI 25 MCI 25
Sound information
Sound power - indoor Lw [ dB(A) ]
Sound power - outdoor Lw [ dB(A) ] 67 68 69
Sound pressure Lp in 1 meter [ dB(A) ] 59 60 61
Sound pressure Lp in 5 meter [ dB(A) ] 45 46 47
Sound pressure Lp in 10 meter [ dB(A) ] 39 40 41
Sound pressure Lp in 15 meter [ dB(A) ] 35 37 38
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certifitates

We have been continuously certifying our heat pumps in the Swiss laboratory at the OST University in Buchs.

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