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INsTALLATIoN
Specification
17.3 DHW 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
16.2
19
21.7
18
21
24
19.4
22.6
25.8
24.4
27
Connected load in kw
50 °C DHw output in l/min
rated voltage
Cold water inlet temperature
380 V
400 V
415 V
16.2
19
21.7
18
21
24
19.4
22.6
25.8
24.4
27
17.7 Energy consumption data
Product datasheet: Conventional water heaters to regulation (EU) no. 812/2013 and 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
38
| DEL Plus
All manuals and user guides at all-guides.com
5 °C
10 °C
15 °C
20 °C
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
10.6
12.4
15.2
19.4
11.7
13.8
16.8
21.4
5 °C
10 °C
15 °C
20 °C
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
6.7
7.5
8.6
10.0
7.6
8.6
9.8
11.4
6.2
6.9
7.9
7.2
8.1
9.2
10.8
8.2
9.2
10.5
12.3
7.7
8.7
10.0
11.6
8.6
9.6
11.0
12.9
%
kWh
°C
dB(A)
Measured at ECO level at highest flow rate, maxi-
mum output and maximum set value.
kWh
17.4 Application areas / Conversion table
Specific electrical resistance and specific electrical conductivity
standard specifica-
tion at 15 °C
Conductivity σ ≤ Resis-
Resis-
tivity
ρ ≥
Ωcm
mS/m μS/cm
900
111
1111
17.5 Pressure drop
Taps
Tap pressure drop at a flow rate of 10 l/min
Mono lever mixer tap, approx.
Thermostatic valve, approx.
Shower head, approx.
Sizing the pipework
When calculating the size of the pipework, an appliance pressure
7.7
drop of 0.1 MPa is recommended.
9.0
8.6
17.6 Fault conditions
In the event of a fault, loads up to 80 °C at a pressure of 1.0 MPa
can occur briefly in the installation.
9.2
DEL 18/21/24 Plus
236739
STIEBEL ELTRON
S
A
39
476
60
15
2,184
20 °C
25 °C
Conductivity σ ≤ Resis-
tivity
tivity
ρ ≥
ρ ≥
Ωcm
mS/m μS/cm
Ωcm
800
125
1250
735
MPa
MPa
MPa
Measured at ECO level at highest flow rate and
maximum set value
www.stiebel-eltron.com
Conductivity σ ≤
mS/m
μS/cm
136
1361
0.04 - 0.08
0.03 - 0.05
0.03 - 0.15
DEL 27 Plus
236740
STIEBEL ELTRON
S
A
39
475
60
15
2,177
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