84
Type BW/BWS
351.B20
351.B27
351.B33
351.B42
Performance data
to EN 14511 (B0/W35, 5 K
spread)
Rated heating output
kW
20.5
28.7
32.7
42.3
Cooling capacity
kW
16.4
23.0
26.3
33.6
Power consumption
kW
4.30
5.90
6.50
8.70
Coefficient of performance (COP)
4.80
4.90
5.00
4.80
Brine
(primary circuit)
Capacity
l
9
11
14
14
Nominal flow rate (3 K spread)
l/h
5350
7200
8300
10500
Pressure drop at nominal flow rate
mbar
100
50
84
124
kPa
10.0
5.0
8.4
12.4
Minimum flow rate (4 K spread)
l/h
4000
5400
6200
7900
Pressure drop at minimum flow rate
mbar
63
30
52
78
kPa
6.3
3.0
5.2
7.8
Max. flow temperature (brine inlet)
°C
25
25
25
25
Min. flow temperature (brine inlet)
°C
–
10
–
10
–
10
–
10
Heating water
(secondary circuit)
Capacity
l
8
9
13
13
Nominal flow rate (5 K spread)
l/h
3500
4800
5650
7000
Pressure drop at nominal flow rate
mbar
42
40
65
99
kPa
4.2
4.0
6.5
9.9
Minimum flow rate (12 K spread)
l/h
1500
2050
2400
3000
Pressure drop at minimum flow rate
mbar
7
10
16
23
kPa
0.7
1.0
1.6
2.3
Max. flow temperature (6 K spread)
°C
65
68
68
68
Electrical values, heat pump
Rated voltage, compressor
V
3/PE 400 V/50 Hz
Rated current, compressor
A
13.2
21
26
33
Cos
φ
0.8
0.8
0.8
0.8
Starting current, compressor (with starting cur-
rent limiter)
A
36
39
43
59
Starting current, compressor with stalled arma-
ture
A
101
118
140
174
Compressor MCB/fuse protection
A
1 x C25A
3-pole
1 x C32A
3-pole
1 x C32A
3-pole
1 x C40A
3-pole
Protection class
I
I
I
I
Electrical values, heat pump control unit
Rated voltage, heat pump control unit/PCB
V
1/N/PE 230 V/50 Hz
Fuse rating, heat pump control unit/PCB
1 x B16A
Fuse, heat pump control unit/PCB
A
6.3 A (slow)/250 V
IP rating
IP 20
IP 20
IP 20
IP 20
Power consumption
Max. power consumption, heat pump control
unit/PCB, heat pump stage 1 (type BW 351.B)
W
25
25
25
25
Max. power consumption, PCB, heat pump
stage 2 (type BWS 351.B)
20
20
20
20
Power consumption, heat pump control unit/
PCB, stages 1 and 2
W
45
45
45
45
Specification
Specification for brine/water heat pumps
5855006
Appendix
