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Ground source heat pump (brine)
BWS-1

High efficiency ground source heat pump (brine) for indoor installation
Model / Performance
  • BWS-1 06
  • BWS-1 08
  • BWS-1 10
  • BWS-1 12
  • BWS-1 16
  • Key Facts
  • Specification
  • Downloads
  • Ground source heat pump (brine) for a maximum heating water temperature of 63 °C and a minimum brine temperature of down to -5 °C
  • Heat meter integral to the appliance (BAFA recognised)
  • Electronic soft start for starting current limit (BWS-1-08/10/12/16)
  • Electronically controlled electric heating element, 6 kW, for central heating backup and DHW heating according to demand in mono energetic operation
  • High efficiency pumps (EEI < 0.23) for the heating and brine circuits
  • Changeover valve for DHW heating
  • Insulated safety assemblies for the heating circuit/DHW heating and brine circuit
  • Anti-vibration connections
  • "Wolf Easy Connect System" with fully wired connection (including 4 m cable) from the heat pump to the WPM-1 heat pump manager
  • Integral phase and rotary field monitors
  • External increase in the system temperature using Smart Grid or on-site consumption of PV power
Please choose model
Ground source heat pump (brine) BWS-1
Type BWS-1 06 BWS-1 08 BWS-1 10 BWS-1 12 BWS-1 16

General data

Energy efficiency class, central heating, low temperature A++ A++ A++ A++ A++
Energy efficiency class, central heating, medium temperature A++ A++ A++ A++ A++
Maximum operating pressure, heating circuit / brine circuit 3 / 3 3 / 3 3 / 3 3 / 3 3 / 3
Operating limit temperatures, heating water °C 20 to +63 20 to +63 +20 to +63 +20 to +63 +20 to +63
Operating limit temperatures, brine °C -5 to +20 -5 to +20 -5 to +20 -5 to +20 -5 to +20
Refrigerant type/charge weight (hermetically sealed refrigerant circuit) - / kg R407C / 1,8 R407C / 2,0 R407C / 2,25 R407C / 2,8 R407C / 3,1
Maximum operating pressure, refrigerant circuit bar 30 30 30 30 30
Refrigerant oil FV50S FV50S FV50S FV50S FV50S
Water flow rate: minimum (7 K) / nominal (5 K) / maximum (4 K) 1) l/min 12,1 / 16,6 / 21,6 17,2 / 24 / 30 22 / 30,8 / 38,3 24,6 / 34,1 / 43,3 34,4 / 48,3 / 60
Residual head at dT 5 K mbar 580 510 450 480 440
3-way valve for DHW heating circuit integrated integrated integrated integrated integrated
High efficiency pump (EEI < 0.23), heating circuit Wilo Yonos Para 25/7,5 Wilo Yonos Para 25/7,5 Wilo Yonos Para 25/7,5 Wilo Stratos Para 25/1-8 Wilo Stratos Para 25/1-8
Brine flow rate: minimum (5 K) / nominal (4 K) / maximum (3 K) l/min 15 / 18,3 / 25 20 / 25,8 / 34,3 26,6 / 33,3 / 44,1 29,1 / 36,6 / 48,3 40,8 / 50,8 / 67,8
Residual head at dT 4 K (30 % brine / 0 °C) mbar 480 440 410 550 440
Minimum brine concentration / frost protection up to % / °C 25 / -13 25 / -13 25 / -13 25 / -13 25 / -13
High efficiency pump (EEI < 0.23), brine circuit Wilo Stratos Para 25/1-7 Wilo Stratos Para 25/1-7 Wilo Stratos Para 25/1-7 Wilo Stratos Para 25/1-8 Wilo Stratos Para 25/1-8
Output, electric heater, 3 phases, 400 V kW 1 bis 6 1 bis 6 1 bis 6 1 bis 6 1 bis 6
Maximum current drawn, electric heater A 9.6 9.6 9.6 9.6 9.6
Maximum power consumption / compressor current within application limits kW / A 2,28 / 4,20 3,2 / 5,8 3,85 / 7,0 4,71 / 8,4 6,53 / 11,7
Power consumption / current drawn /
cos φ at B0/W35 kW / A / - 1,26 / 2,5 / 0,72 1,79 / 3,2 / 0,80 2,3 / 4,4 / 0,76 2,55 / 4,6 / 0,79 3,65 / 6,9 / 0,76
Power consumption of heating circuit pump at nominal flow rate W 45 55 60 100 110
Power consumption of brine pump at nominal flow rate W 55 60 65 110 120
Direct starting current / soft start A 27 / - - / 21 - / 26 - / 31 - / 39
Max. no of compressor starts 1/h 3 3 3 3 3
Typical BWS-1 power consumption in standby LP (low power) W 5.8 5.8 5.8 5.8 5.8
IP rating IP IP20 IP20 IP20 IP20 IP20

Heating output / COP to EN 14511

B0/W35 kW / - 5,9 / 4,7 8,4 / 4,7 10,8 / 4,7 12,0 / 4,7 16,8 / 4,6
B0/W55 kW / - 5,3 / 2,8 7,4 / 2,8 9,2 / 2,9 10,5 / 2,8 15,8 / 2,8
B5/W35 kW / - 6,9 / 5,3 9,7 / 5,4 12,3 / 5,4 13,8 / 5,3 19,9 / 5,3
B-5/W45 kW / - 4,8 / 3,1 6,8 / 3,2 8,6 / 3,1 9,7 / 3,1 14,7 / 3,2

Dimensions

Total height A mm 740 740 740 740 740
Total width B mm 600 600 600 600 600
Total depth C mm 650 650 650 650 650
Heating flow/return, DHW flow/return, brine inlet/outlet G (AG) 1½“ 1½“ 1½“ 1½“ 1½“
Sound power level dB(A) 41 42 42 43 43
Average sound pressure level at 1 m distance from heat pump (inside the room) dB(A) 39 40 40 41 41

Weight

Weight kg 141 145 149 169 174

Electrics, indoor

Electrical connection / fuse protection (omnipolar disconnection) compressor 3~ PE / 400VAC / 50Hz / 10A(C) 3~ PE / 400VAC / 50Hz / 16 A©
Electric heater 3~ PE / 400VAC / 50Hz / 10A(B)
Control voltage 1~ NPE / 230VAC / 50Hz / 10A(B)
Ground source heat pump (brine) BWS-1