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INSTALLATIoN
Specification
Priority control with load shedding relay (LR 1-A)
See also chapter "Appliance description / Accessories"
2
1
1 Control cable to the contactor of the second appliance (e.g.
electric storage heater).
2 Control contact opens when switching the instantaneous
water heater on.
14.3 DHW output
DHW output is subject to the mains voltage, the appliance's con-
nected load and the cold water inlet temperature.
The rated voltage and rated output can be found on the type plate
(see chapter "Troubleshooting").
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
16,3
18,0
19,0
19,4
21,0
21,7
22,6
23,5
24,0
24,4
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
16,2
16,3
18,0
19,0
19,4
21,0
21,7
22,6
23,5
24,0
24,4
25,8
32
| DHE SL LABS
5 °C
10 °C
15 °C
20 °C
7,0
8,3
10,1
12,9
7,1
8,3
10,1
12,9
7,8
9,2
11,2
14,3
8,2
9,7
11,8
15,1
8,4
9,9
12,0
15,4
9,1
10,7
13,0
16,7
9,4
11,1
13,5
17,2
9,8
11,5
14,0
17,9
10,2
12,0
14,6
18,7
10,4
12,2
14,9
19,0
10,6
12,4
15,2
19,4
11,2
13,2
16,0
20,5
5 °C
10 °C
15 °C
20 °C
5,1
5,8
6,6
5,2
5,8
6,7
5,7
6,4
7,3
6,0
6,8
7,8
6,2
6,9
7,9
6,7
7,5
8,6
10,0
6,9
7,8
8,9
10,3
7,2
8,1
9,2
10,8
7,5
8,4
9,6
11,2
7,6
8,6
9,8
11,4
7,7
8,7
10,0
11,6
8,2
9,2
10,5
12,3
14.4 Application areas / conversion table
Specific electrical resistance and specific electrical conductivity
(see chapter "Data table").
Standard specifica-
tion at 15 °C
Conductivity σ ≤
Resist-
ance
ρ ≥
Ωcm
mS/m μS/cm
900
111
1111
14.5 Pressure drop
Taps
pressure drop at taps at flow rate of 10 l/min
Mono-lever mixer tap, approx.
Thermostatic valve, approx.
Hand shower, approx.
Sizing the pipework
When calculating the size of the pipework, a pressure drop for the
appliance of 0.1 MPa is recommended.
14.6 Fault conditions
In case of faults, loads up to a maximum of 80 °C at a pressure of
1.0 MPa can occur temporarily in the installation.
14.7 Details on energy consumption
The product data complies with EU regulations relating to the
Directive on the ecological design of energy related products (ErP).
Manufacturer
Load profile
Energy efficiency class
Annual power consumption
Energy conversion efficiency
Default temperature setting
Sound power level
Special information on measuring
efficiency
7,7
7,8
8,6
9,0
9,2
20 °C
25 °C
Conductivity σ ≤
Resist-
Resist-
ance
ance
ρ ≥
ρ ≥
Ωcm
mS/m μS/cm
Ωcm
800
125
1250
735
MPa
MPa
MPa
DHE 18/21/24 SL LABS
kWh
%
°C
dB(A)
www.stiebel-eltron.com
Conductivity σ ≤
mS/m
μS/cm
136
1361
0,04 - 0,08
0,03 - 0,05
0,03 - 0,15
233306
STIEBEL ELTRON
S
A
479
39
60
15
Data at Pmax.
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Troubleshooting
