Domestic Hot Water Output; Application Areas / Conversion Table; Pressure Drop; Fault Conditions - STIEBEL ELTRON DHB-E 18 LCD 25A Manual
Electronically controlled comfort instantaneous water heater
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- Operation and installation (21 pages) ,
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INsTALLATIoN
Specification
17.3 Domestic hot water output
The DHW output is subject to the connected power supply, the
appliance's connected load and the cold water inlet temperature.
The rated voltage and rated output can be found on the type plate.
Connected load in kw
38 °C DHW output in l/min
rated voltage
Cold water inlet temperature
380 V
400 V
415 V
9.9
12.2
11
13.5
11.8
14.5
16.2
18
19.4
16.2
19
21.7
18
21
24
19.4
22.6
25.8
Connected load in kw
50 °C DHW output in l/min
rated voltage
Cold water inlet temperature
380 V
400 V
415 V
9.9
12.2
11
13.5
11.8
14.5
16.2
18
19.4
16.2
19
21.7
18
17.8 Energy consumption data
The product data complies with EU regulations relating to the
directive on the ecodesign of energy related products (ErP).
Manufacturer
Load profile
Energy efficiency class
Energy conversion efficiency
Daily power consumption
Annual power consumption
Default temperature setting
Sound power level
Special information on measuring effi-
ciency
38
| DHB-E LCD
5 °C
10 °C
15 °C
20 °C
4.3
5.1
6.1
5.3
6.2
7.6
4.8
5.6
6.8
5.8
6.9
8.4
10.7
5.1
6.0
7.3
6.3
7.4
9.0
11.5
7.0
8.3
10.1
12.9
7.8
9.2
11.2
14.3
8.4
9.9
12.0
15.4
7.0
8.3
10.1
12.9
8.2
9.7
11.8
15.1
9.4
11.1
13.5
17.2
7.8
9.2
11.2
14.3
9.1
10.7
13.0
16.7
10.4
12.2
14.9
19.0
8.4
9.9
12.0
15.4
9.8
11.5
14.0
17.9
11.2
13.2
16.0
20.5
5 °C
10 °C
15 °C
20 °C
3.1
3.5
4.0
3.9
4.4
5.0
3.5
3.9
4.5
4.3
4.8
5.5
3.7
4.2
4.8
4.6
5.2
5.9
5.1
5.8
6.6
5.7
6.4
7.3
6.2
6.9
7.9
5.1
5.8
6.6
6.0
6.8
7.8
6.9
7.8
8.9
10.3
5.7
6.4
7.3
DHB-E 11/13 LCD DHB-E 18 LCD 25A
236743
STIEBEL ELTRON
%
kWh
kWh
°C
dB(A)
Measured with integral flow
limiter, maximum output and
maximum set value
Connected load in kw
rated voltage
380 V
400 V
21
24
7.9
9.7
17.4 Application areas / Conversion table
8.7
Specific electrical resistance and specific electrical conductivity
9.4
standard specifica-
tion at 15 °C
Conductivity σ ≤ Resist-
Resist-
ance
ρ ≥
Ωcm
mS/m μS/cm
900
111
1111
17.5 Pressure drop
Taps/valves
Tap pressure drop at a flow rate of 10 l/min
Mono lever mixer tap, approx.
Thermostatic valve, approx.
Shower head, approx.
4.7
5.8
Sizing the pipework
5.2
When calculating the size of the pipework, an appliance pressure
6.4
drop of 0.1 MPa is recommended.
5.6
6.9
17.6 Fault conditions
7.7
8.6
In the event of a fault, loads up to 80 °C at a pressure of 1.0 MPa
9.2
can occur briefly in the installation.
7.7
9.0
17.7 Test symbols
8.6
See type plate on the appliance.
236744
STIEBEL ELTRON
S
S
A
A
39
39
2,211
2,211
480
480
60
60
15
15
Measured with inte-
Measured with integral flow limiter
gral flow limiter and
with highest flow rate, maximum
maximum set value
output and maximum set value
50 °C DHW output in l/min
Cold water inlet temperature
415 V
5 °C
10 °C
6.7
7.5
7.6
8.6
19.4
6.2
6.9
22.6
7.2
8.1
25.8
8.2
9.2
20 °C
25 °C
Conductivity σ ≤ Resist-
ance
ance
ρ ≥
ρ ≥
Ωcm
mS/m μS/cm
Ωcm
800
125
1250
735
MPa
MPa
MPa
DHB-E 18/21/24 LCD
236745
STIEBEL ELTRON
S
A
39
2,211
480
60
15
Measured with integral
flow limiter and maxi-
www.stiebel-eltron.com
15 °C
20 °C
8.6
10.0
9.8
11.4
7.9
9.2
9.2
10.8
10.5
12.3
Conductivity σ ≤
mS/m
μS/cm
136
1361
0.04 - 0.08
0.03 - 0.05
0.03 - 0.15
DHB-E 27 LCD
236746
STIEBEL ELTRON
S
A
39
2,217
481
60
15
mum set value
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