STIEBEL ELTRON DHE 18 AU - DHW Output; Application Areas; Conversion Table; Pressure Drop; Fault Conditions

ENGLISH
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INSTALLATION
Specication
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 "Troubleshooting").
Connected load in kW 38 °C DHW output in l/min.
Rated voltage Cold water inlet temperature
380 V 400 V 415 V 5°C 10°C 15°C 20°C
16.2 7.0 8.3 10.1 12.9
18 7.8 9.2 11.2 14.3
19.4 8.4 9.9 12.0 15.4
24.4 10.6 12.4 15.2 19.4
27 11.7 13.8 16.8 21.4
29.1 12.6 14.8 18.1 23.1
Connected load in kW 50 °C DHW output in l/min
Rated voltage Cold water inlet temperature
380 V 400 V 415 V 5°C 10°C 15°C 20°C
16.2 5.1 5.8 6.6 7.7
18 5.7 6.4 7.3 8.6
19.4 6.2 6.9 7.9 9.2
24.4 7.7 8.7 10.0 11.6
27 8.6 9.6 11.0 12.9
29.1 9.2 10.4 11.9 13.9
16.4 Application areas/ Conversion table
Specific electrical resistance and specific electrical conductivity
Standard specifica-
tion at 15 °C 20°C 25°C
Resis-
tivity
ρ≥
Conductivity σ≤ Resis-
tivity
ρ≥
Conductivity σ≤ Resis-
tivity
ρ≥
Conductivity σ≤
Ωcm mS/m μS/cm Ωcm mS/m μS/cm Ωcm mS/m μS/cm
900 111 1111 800 125 1250 735 136 1361
16.5 Pressure drop
Taps/valves
Tap pressure drop at a flow rate of 10 l/min
Mono lever mixer tap, approx. MPa 0.04 - 0.08
Thermostatic valve, approx. MPa 0.03 - 0.05
Hand shower, approx. MPa 0.03 - 0.15
Sizing the pipework
When calculating the size of the pipework, an appliance pressure
drop of 0.1MPa is recommended.
16.6 Fault conditions
In the event of a fault, loads up to a maximum of 80 °C at a pres-
sure of 1.0MPa can occur temporarily in the installation.
16.7 Test symbols
See type plate on the appliance
Information for Australia/New Zealand:
Installation complies with standard AS/NZS 3500.4.
16.8 Data table
DHE 18 AU DHE 27 AU
233988 233989
Electrical data
Rated voltage V 380 400 415 380 400 415
Rated output kW 16.2 18 19.4 24.4 27 29.1
Rated current A 24.7 26 27 37.1 39 40.5
Fuse protection A 25 25 32 40
Frequency Hz 50/60 50/60 50/- 50/-
Phases 3/PE 3/PE
Max. mains impedance at 50Hz Ω 0.300 0.285 0.274 0.200 0.190 0.183
Specific resistivity ρ
15
≥ Ω cm 900 900
Specific conductivity σ
15
≤ μS/cm 1111 1111
Connections
Water connection G 1/2 A G 1/2 A
Application limits
Max. permissible pressure MPa 1 1
Max. inlet temperature for reheating °C 55 55
Values
Max. permissible inlet temperature °C 65 65
ON l/min > 2.5 > 2.5
Pressure drop at flow rate MPa 0.04 0.1
Flow rate for pressure drop l/min 5.2 7.7
DHW delivery l/min 9.2 13.8
Δϑ on delivery K 28 28
Hydraulic data
Nominal capacity l 0.4 0.4