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Ground source heat pump (water)
BWW-1

High efficiency ground source heat pump (water) for indoor installation
Model / Performance
  • BWW-1-07
  • BWW-1-11
  • BWW-1-13
  • BWW-1-15
  • BWW-1-21
  • Key Facts
  • Specification
  • Downloads
  • Ground source heat pump (water) with intermediate heat exchanger for a maximum heating water temperature of 63 °C and well water temperature of 7-22 °C
  • Heat meter integral to the appliance (BAFA recognised)
  • Electronic soft start for starting current limit (BWW-1-11/13/15/21)
  • Electronically controlled electric heating element, 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
  • BWM-S or BWM-L ground source module (water)
  • Nickel-brazed stainless steel plate heat exchanger
  • Diffusion-proof thermal insulation
  • Wall mounting bracket with fixing set
  • Parameter plug for configuring the heat pump
  • External increase in the system temperature using Smart Grid or on-site consumption of PV power
Please choose model
Ground source heat pump (water) BWW-1
Type BWW-1-07 BWW-1-11 BWW-1-13 BWW-1-15 BWW-1-21

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++
Comprising: BWS-1-06 + BWM-S BWS-1-08 + BWM-S BWS-1-10 + BWM-S BWS-1-12 + BWM-L BWS-1-16 + BWM-L
Heating flow/return, DHW flow/return, brine inlet/outlet on the BWS-1 G (male) 1½“ 1½“ 1½“ 1½“ 1½“
Connections to the BWM G (male) 1¼“ 1¼“ 1¼“ 1¼“ 1¼“
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
Max. operating pressure, heating circuit / brine circuit / well circuit bar 3 / 3 / 3 3 / 3 / 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, well water °C +7 to +22 +7 to +22 +7 to +22 +7 to +22 +7 to +22
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
Brine volume in BWS-1 with BWM l 4.7 5.2 5.7 7.3 7.8
Heating water flow rate: minimum (7 K) / nominal (5 K) / maximum (4 K) 1) l/min 14,6 / 20,3 / 25,4 21,4 / 30,1 / 37,6 27,3 / 38,1 / 47,6 30,7 / 43,0 / 53,7 42,6 / 59,6 / 74,5
Residual head at dT 5 K mbar 530 430 340 420 150
3-way valve for DHW heating circuit integriert integriert integriert integriert integriert
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
Residual head for brine circuit pipework (for flow rate in l/min) mbar 160 (42) 200 (42) 210 (42) 140 (58) 140 (58)
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 25/1-7 Wilo Stratos Para 25/1-7
Nominal flow rate, well water, for dT 4 K l/min 27 42 52 58 82
Well water pressure drop in the BWM with nominal flow rate mbar 24 53 85 134 257
Output, electric heater, 3 phases, 400 V kW 1 to 6 1 to  6 1 to 6 1 to 6 1 to 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 2,89 / 4,2 3,2 / 5,8 3,85 / 7,0 4,71 / 8,4 6,53 / 11,7
Power consumption / current drawn /
cos φ at W10/W35, without well pump kW / A / - 1,26 / 2,5 / 0,72 1,85 / 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 BWW-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

W10/W35 kW / - 7,1 / 5,4 10,5 / 5,6 13,3 / 5,6 15,0 / 5,5 20,8 / 5,5
W10/W45 kW / - 6,9 / 4,2 10,0 / 4,4 12,2 / 4,3 14,0 / 4,3 19,3 / 4,3
W10/W55 kW / - 6,2 / 3,2 9,3 / 3,3 11,5 / 3,2 13,5 / 3,3 17,0 / 3,3

Dimensions

BWS-1 total height A mm 740 740 740 740 740
BWS-1 total width B mm 600 600 600 600 600
BWS-1 total depth C mm 650 650 650 650 650
BWM total height D mm 355 355 355 545 545
BWM total width E mm 245 245 245 245 245
BWM total depth F mm 200 200 200 200 200

Weight

Weight, BWW-1 kg 151 156 160 185 190

Electrics, indoor

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