Air Source Heat pumps AiWa H-Twin EVI Urban Indoor

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 multi-family dwellings, suburban mixed-use buildings or commercial operations. The Urban range is based on a robust construction quality steel for all parts. High quality, long proven heat pump circuit components extend the life of the heat pump.
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 Indoor 23 EVI Twin 27 EVI Twin
Product sheet
Article nr. WA0i1357 WA0i1359
Heating capacity [ kW ] EN 14511
A7 / W35 24.4
(12.2 ~ 24.4)
30.2
(15.1 ~ 30.2)
A2 / W35 20.9
(10.4 ~ 20.9)
25.8
(12.9 ~ 25.8)
A-7 / W34 17.3
(8.6 ~ 17.3)
21.4
(10.7 ~ 21.4)
A7 / W55 24.4
(12.2 ~ 24.4)
30.9
(15.4 ~ 30.9)
A2 / W55 21.4
(10.7 ~ 21.4)
26.9
(13.5 ~ 26.9)
A-7 / W52 18.1 (9.0 ~ 18.1) 22.7 (11.4 ~ 22.7)
Energy Efficiency Parameters and Performance ErP [ middle temperature region ]
Rated nominal heating capacity P rated [ kW ] 19.6 24.3
Energy class A+++ A+++
SCOP 4.69 4.52
Seasonal energy efficiency η [ % ] 187.4 180.8
Bivalent point [ ºC ] -7 -7
Parameter of heat sink
Maximal flow temperature [ ºC ] 65 65
Minimal flow temperature [ ºC ] 25 25
Flow nominal [ m3/h ] [@35/30] 2.11 ~ 4.21 2.61 ~ 5.21
Pressure drop [ kPa ] [@35/30] 13 16
Nominal ∆T [ K ] [@W35°C] 5 5
Nominal ∆T [ K ] [@W55°C] 8 8
Nominal ∆T [ K ] [@W65°C] 10 10
Connection port size [ " ] 1.1/4" 1.1/2"
Parameter of low temperature heat source
Minimal source temperature [ ºC ] -22 -22
Maximal source temperature [ ºC ] 40 40
Flow source nominal [ m3/h ] 3850 ~ 7700 4730 ~ 9460
Pressure drop source [ kPa ] 0.031 0.035
Nominal ∆T source [ K ] 7 7
Connection port size source [ " ] 1200mm x 1200mm 1200mm x 1200mm
Electrical parameters
Voltage [ V ] 3~ 400/50 3~ 400/50
Safety protection [ A ] C32 C32
Current - nominal [ A ] 12.30 12.40
Current - maximal [ A ] 21.00 21.30
Current - Start [ A ] 11.55 12.4
Softstart 2 x MCI 12 2 x MCI 12
Sound information
Sound power - indoor Lw [ dB(A) ] 68 69
Sound power - outdoor Lw [ dB(A) ]
Sound pressure Lp in 1 meter [ dB(A) ] 60 61
Sound pressure Lp in 5 meter [ dB(A) ] 46 47
Sound pressure Lp in 10 meter [ dB(A) ] 40 41
Sound pressure Lp in 15 meter [ dB(A) ] 36 37
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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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