56
| LWZ 304-404 SOL
www.stiebel-eltron.com
INSTALLATION
Specification
11.9 Data table
The output data refers to new appliances with clean heat ex-
changers. The power consumption of the integral auxiliary drives
represents the maximum value and may vary subject to operating
point. The power consumption of the integral auxiliary drives is
included in the output details of the appliance (to EN 14511).
LWZ 304 SOL
LWZ 404 SOL
230143
230144
Heating output to EN 14511
Heating output at A-7/W35 (EN 14511)
kW
2.98
4.74
Heating output at A2/W35 (EN 14511)
kW
4.32
6.38
Heating output at A7/W35 (EN 14511)
kW
5.29
7.59
Heating output, emergency/booster heater
kW
2.9 / 5.8 / 8.8
2.9 / 5.8 / 8.8
Cooling capacity at A35/W7
kW
3.6
4.6
Max. heating output
kW
13
14.8
Power consumption to EN 14511
Power consumption at A-7/W35 (EN 14511)
kW
1.15
1.63
Power consumption at A2/W35 (EN 14511)
kW
1.33
1.84
Power consumption at A7/W35 (EN 14511)
kW
1.44
1.96
COP to EN 14511
COP at A-7/W35 (EN 14511)
2.72
2.9
COP at A2/W35 (EN 14511)
3.40
3.46
COP at A7/W35 (EN 14511)
3.84
3.89
Sound data
Sound power level (EN 12102)
dB(A)
56
58
Application limits
Min. application limit, heat source
°C
-20
-20
Max. application limit, heat source
°C
35
35
Max. pressure drop, outdoor air
Pa
25
25
Min. installation room volume
m³
12
12
DHW temperature with heat pump at A2
°C
50
50
Water hardness
°dH
≤3
≤3
Conductivity (softening)
μS/cm
<1000
<1000
Conductivity (desalination)
μS/cm
20-100
20-100
Chloride
mg/l
<30
<30
Oxygen 8-12 weeks after filling (softening)
mg/l
<0.02
<0.02
Oxygen 8-12 weeks after filling (desalination)
mg/l
<0.1
<0.1
pH value (with aluminium compounds)
8.0-8.5
8.0-8.5
pH value (without aluminium compounds)
8.0-10.0
8.0-10.0
Hydraulic data
Cylinder capacity
l
235
235
Electrical data
Max. power consumption, fan
W
170
170
Nominal power consumption, fan
W
100
100
Power consumption, circulation pump
W
< 45
< 45
MCB/fuse protection, emergency/booster heater
A
3 x C 16
3 x C 16
Compressor fuse/MCB
A
3 x C 16
3 x C 20
MCB/fuse protection, controller
A
C 16
C 16
Rated voltage, emergency/booster heater
V
400
400
Rated voltage, compressor
V
400
400
Rated voltage, controller
V
230
230
Phases, emergency/booster heater
3/N/PE
3/N/PE
Phases, compressor
3/N/PE
3/N/PE
Phases, controller
1/N/PE
1/N/PE
Frequency
Hz
50
50
Total power consumption
A
17
20
Starting current (with/without starting current limiter)
A
19/29
27/39