Dhw Output; Application Areas / Conversion Table; Pressure Drop; Fault Conditions - STIEBEL ELTRON DHE 18 AU Operation And Installation Manual

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 "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
18
19.4
24.4
27
29.1
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
18
19.4
24.4
27
29.1

16.8 Data table

Electrical data
Rated voltage
Rated output
Rated current
Fuse protection
Frequency
Phases
Max. mains impedance at 50 Hz
Specific resistivity ρ ≥
15
Specific conductivity σ
≤
15
Connections
Water connection
Application limits
Max. permissible pressure
Max. inlet temperature for reheating
Values
Max. permissible inlet temperature
ON
Pressure drop at flow rate
Flow rate for pressure drop
DHW delivery
Δϑ on delivery
Hydraulic data
Nominal capacity
www.stiebel-eltron.com
5 °C 10 °C 15 °C 20 °C
7.0 8.3 10.1 12.9
7.8 9.2 11.2 14.3
8.4 9.9 12.0 15.4
10.6 12.4 15.2 19.4
11.7 13.8 16.8 21.4
12.6 14.8 18.1 23.1
5 °C 10 °C 15 °C 20 °C
5.1 5.8 6.6
5.7 6.4 7.3
6.2 6.9 7.9
7.7 8.7 10.0 11.6
8.6 9.6 11.0 12.9
9.2 10.4 11.9 13.9
Ω cm
μS/cm
MPa
l/min
MPa
l/min
l/min
16.4 Application areas / Conversion table
Specific electrical resistance and specific electrical conductivity
Standard specifica-
tion at 15 °C 20 °C
Conductivity σ ≤ Resis-
Resis-
tivity tivity
ρ ≥ ρ ≥
Ωcm mS/m μS/cm
900 111 1111

16.5 Pressure drop

Taps/valves
Tap pressure drop at a flow rate of 10 l/min
Mono lever mixer tap, approx.
Thermostatic valve, approx.
Hand shower, approx.
7.7
8.6
Sizing the pipework
9.2
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.
DHE 18 AU
V 380 400
kW 16.2 18
A 24.7 26
A 25 25
Hz 50/60 50/60
Ω 0.300 0.285
°C
°C
K
l
25 °C
Conductivity σ ≤ Resis- Conductivity σ ≤
tivity
ρ ≥
Ωcm mS/m μS/cm Ωcm mS/m
800 125 1250 735
MPa
MPa
MPa
233988
415 380 400
19.4 24.4 27
27 37.1 39
32
50/-
3/PE
0.274 0.200 0.190
900
1111
G 1/2 A
1
55
65
> 2.5
0.04
5.2
9.2
28
0.4
DHE AU|
μS/cm
136 1361
0.04 - 0.08
0.03 - 0.05
0.03 - 0.15
DHE 27 AU
233989
415
29.1
40.5
40
50/-
3/PE
0.183
900
1111
G 1/2 A
1
55
65
> 2.5
0.1
7.7
13.8
28
0.4
19