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Water-to-water heat pumps

BWW-1

High efficiency water-to-water heat pump for indoor installation

BWW-107
BWW-111
BWW-113
BWW-115
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Water-to-water heat pumps for utilising environmental energy from well water with a
heating output of 7, 11, 13, 15 or 21 kW; for heating water temperatures up to 63°C and well water
temperatures of 7 - 22°C

  • Intermediate heat exchanger made from nickel-brazed stainless steel plates, with diffusion-proof insulation
  • Clear appliance layout; all essential components are accessible from the front
  • Equipped with class A energy-saving, high-efficiency pumps for heating circuit and brine circuit and
  • 3-way diverter valve for DHW cylinder heating
  • Can be combined with CEW-1-200 DHW cylinder to form a heating centre
  • Safety assemblies for the heating and brine circuit
  • Extension with BKM cooling module for passive cooling (option)

What do you want to know?

Overview of benefits

Extremely quiet operation thanks to compressor with double vibration isolation, integral flexible corrugated stainless steel pipes and noise-attenuating casing

Energy efficient DHW heating with optional ECO mode

Electronically controlled, integrated electric booster heater for demand-based heating backup

Integral heat meter can be extended to display SPF/DPF via the electricity meter's S0 interface

WOLF Easy Connect System with a fully wired connection from the heat pump to the WPM-1 heat pump manager. The BM programming unit is included, and the system can be extended for additional energy sources, e.g. solar, using the WOLF WRS control system

Cascadable up to 105 kW: Up to 5 heat pumps can be combined using a KM cascade controller

Smart-home-capable with ISM7e / WOLF Link pro interface module

WOLF high-efficiency heat pumps obtain up to 80% of their heating energy from free environmental energy

All appliance types meet the BAFA subsidy guidelines for efficient heat pumps [Germany]

The system temperature can be increased by external sources using smart grid electricity or a photovoltaic system

Specifications

Model 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++
Consisting of:
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
Thread (male)
1½“
1½“
1½“
1½“
1½“
Connections to the BWM
Thread (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
litres
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
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
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 down 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 at 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 power input, 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. excl. 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
Starting current, direct / 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 according to EN14511
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 unit
Electrical connection / fuse protection (all-pole disconnection) compressor
3~ PE / 400 V AC / 50 Hz / 10 A(C)
3~ PE / 400VAC / 50Hz / 16 A(C)
Electric heater
3~ PE / 400VAC / 50Hz / 10A(B)
Control voltage
1~ NPE / 230 V AC / 50 Hz / 10 A(B)

Specifications

  • 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++
    Consisting of:
    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 (Thread (male))
    1½“
    1½“
    1½“
    1½“
    1½“
    Connections to the BWM (Thread (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 (litres)
    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
    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
    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 down 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 at 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 power input, 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. excl. 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
    Starting current, direct / 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 according to EN14511
    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 unit
    Electrical connection / fuse protection (all-pole disconnection) compressor
    3~ PE / 400 V AC / 50 Hz / 10 A(C)
    3~ PE / 400VAC / 50Hz / 16 A(C)
    Electric heater
    3~ PE / 400VAC / 50Hz / 10A(B)
    Control voltage
    1~ NPE / 230 V AC / 50 Hz / 10 A(B)
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