Ground Source Heat pumps BW EVI

Compact heat pump for heating and domestic hot water with passive cooling control. Short closed refrigerant circuit with silent scroll compressor contributes to 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.
As a primary source, the thermal energy of the sun accumulated in the ground through a horizontal collector or geothermal energy through a deep borehole is used. In the collector or borehole, an antifreeze flows which takes the energy of the earth at a low temperature and the heat pump raises this temperature to a temperature usable for heating or hot water.

Heat pump type: BW Comfort 11 EVI 14 EVI
Product sheet
Article nr. WA001312 WA001313
Heating capacity [ kW ] EN 14511
B0 / W35 (max) 11.3 14.5
B0 / W35 (min) 11.3 14.5
B0 / W34 11.3 14.4
B0 / 55 (max) 11.5 14.9
B0 / W55 (min) 11.5 14.9
B0 / W52 11.5 14.9
Energy Efficiency Parameters and Performance ErP [ middle temperature region ]
Rated nominal heating capacity P rated [ kW ] 11.3 14.5
Energy class A+++ A+++
SCOP 5.31 5.29
Seasonal energy efficiency η [ % ] 212.2 211.4
Bivalent point [ ºC ] -10 -10
Parameter of heat sink
Maximal flow temperature [ ºC ] 65 65
Minimal flow temperature [ ºC ] 25 25
Flow nominal [ m3/h ] [@35/30] 1.96 2.50
Pressure drop [ kPa ] [@35/30] 12 12
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" 1.1/4"
Parameter of low temperature heat source
Minimal source temperature [ ºC ] -10 (7) -10 (7)
Maximal source temperature [ ºC ] 30 30
Flow source nominal [ m3/h ] 2.70 3.44
Pressure drop source [ kPa ] 12 12
Nominal ∆T source [ K ] 3 3
Connection port size source [ " ] 1.1/4 1.1/4
Electrical parameters
Voltage [ V ] 3~ 400/50 3~ 400/50
Safety protection [ A ] C20 C25
Current - nominal [ A ] 4.28 5.58
Current - maximal [ A ] 9.20 10.90
Current - Start [ A ] 11.55 15.06
Softstart MCI 12 MCI 12
Sound information
Sound power - indoor Lw [ dB(A) ] 45.6 45.2
Sound power - outdoor Lw [ dB(A) ]
Sound pressure Lp in 1 meter [ dB(A) ] 37.6 37.2
Sound pressure Lp in 5 meter [ dB(A) ] 23.6 23.2
Sound pressure Lp in 10 meter [ dB(A) ] 17.6 17.2
Sound pressure Lp in 15 meter [ dB(A) ] 14.1 13.7
1 + 16 =


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