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INSTALLATIoN
Specification
16.3 DHW output
The DHW output is subject to the mains voltage, the appliance's
connected load and the cold water inlet temperature. The rated
voltage and rated output can be found on the type plate (see
chapter "Operation / Troubleshooting").
Connected load in
38 °C DHw output in l/min.
kw
Rated voltage
Cold water inlet temperature
380 V
400 V
5 °C
16.2
18
19
21
21.7
24
24,4
27
Connected load in
50 °C DHW output in l/min.
kw
Rated voltage
Cold water inlet temperature
380 V
400 V
5 °C
16.2
18
19
21
21.7
24
24,4
27
16.7 Energy consumption data
Product datasheet: Conventional water heaters to regulation (EU) no. 812/2013 | 814/2013
Manufacturer
Load profile
Energy efficiency class
Energy conversion efficiency
Annual power consumption
Default temperature setting
Sound power level
Special information on measuring efficiency
Daily power consumption
www.stiebel-eltron.com
10 °C
15 °C
7.0
8.3
10.1
7.8
9.2
11.2
8.2
9.7
11.8
9.1
10.7
13.0
9.4
11.1
13.5
10.4
12.2
14.9
10,6
12,4
15,2
11,7
13,8
16,8
10 °C
15 °C
5.1
5.8
6.6
5.7
6.4
7.3
6.0
6.8
7.8
6.7
7.5
8.6
6.9
7.8
8.9
7.6
8.6
9.8
7,7
8,7
10,0
8,6
9,6
11,0
DHB 18 STi
STIEBEL ELTRON
%
kWh
°C
dB(A)
kWh
16.4 Application areas / Conversion table
Specific electrical resistivity and specific electrical conductivity
(see chapter "Installation / Data table").
Standard specifica-
tion at 15 °C
Resistivi-
Conductivity
σ ≤
ty ρ ≥
Ωcm
mS/m μS/cm Ωcm
1100
91
909
20 °C
12.9
14.3
16.5 Pressure drop
15.1
16.7
Taps
17.2
19.0
Tap pressure drop at a flow rate of 10 l/min
19,4
Mono lever mixer tap, approx.
21,4
Thermostatic valve, approx.
Shower head, approx.
Sizing the pipework
20 °C
7.7
When calculating the size of the pipework, an appliance pressure
8.6
drop of 0.1 MPa is recommended.
9.0
10.0
16.6 Fault conditions
10.3
In the event of a fault, loads up to a maximum of 95 °C at a pres-
11.4
11,6
sure of 1.2 MPa can occur temporarily in the installation.
12,9
DHB 21 STi
227612
227613
STIEBEL ELTRON
S
S
A
A
39
39
480
477
55
55
15
15
None
None
2,215
2,197
20 °C
25 °C
Resistivi-
Conductivity
Resistivi-
σ ≤
ty ρ ≥
ty ρ ≥
mS/m μS/cm Ωcm
970
103
1031
895
MPa
MPa
MPa
DHB 24 STi
227614
STIEBEL ELTRON
S
A
39
475
55
15
None
Measured with DMB 7.5 l/min
2,186
DHB STi |
Conductivity
σ ≤
mS/m μS/cm
112
1117
0.04 - 0.08
0.03 - 0.05
0.03 - 0.15
DHB 27 STi
227615
STIEBEL ELTRON
S
A
39
475
55
15
2,185
31
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