Stiebel Eltron HDB-E 24 Si [30/80] Installation
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Stiebel Eltron HDB-E 24 Si [30/80] Installation

Stiebel Eltron HDB-E 24 Si [30/80] Installation
30 | HDB-E Si www.stiebel-eltron.com
INSTALLATION

15.4 Application areas
Specific electrical resistance and specific electrical conductivity
Standard
specification
at 15 °C
at 20 °C
at 25 °C
Resistance Ω cm ≥ 1100 ≥ 970 ≥ 895
Conductivity mS/m ≤ 91 ≤ 103 ≤ 112
Conductivity μs/cm ≤ 910 ≤ 1030 ≤ 1120
15.5 Pressure drop
Pressure drop at taps at 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. a pressure drop for the
appliance of 0.1MPa is recommended.
15.6 Fault conditions
In case of faults. loads up to a maximum of 95 °C at a pressure of
1.2 MPa can occur temporarily in the installation.
15.7 Data table
HDB-E 12 Si HDB-E 18 Si HDB-E 21 Si HDB-E 24 Si
232003 232004 232005 232006
Electrical details
Rated voltage V 380 400 415 380 400 415 380 400 415 380 400 415
Rated output kW 9.7 10.7 11.5 16.2 18 19.4 19 21 22.6 21.7 24 25.8
Rated current A 14.4 15.5 16 24.7 26 27 29.5 31 32.2 33.3 35 36.3
Fuse A 16 16 16 25 25 32 32 32 32 35 35 40
Phases 3/PE 3/PE 3/PE 3/PE
Frequency Hz 50/60 50/60 50/60 50/60
Max. mains impedance at 380V / 50Hz Ohm 0.47 0.41 0.36
Max. mains impedance at 380V / 60Hz Ohm 0.39 0.34 0.29
Max. mains impedance at 400V / 50Hz Ohm 0.45 0.39 0.34
Max. mains impedance at 400V / 60Hz Ohm 0.37 0.32 0.28
Max. mains impedance at 415V / 50Hz Ohm 0.43 0.37 0.33
Conductivity at 15°C mS/m 90.9 90.9 90.9 90.9
Specific resistance (≤25 °C) Ohm cm 1100 1100 1100 1100
Connections
Water connection G 1/2 A G 1/2 A G 1/2 A G 1/2 A
Application limits
Max. permissible pressure MPa 1 1 1 1
Values
Max. permissible inlet temperature °C 25 25 25 25
ON l/min >2.3 >2.3 >2.3 >2.3
Flow rate for pressure drop l/min 3.1 5.2 6.0 6.9
Pressure drop at flow rate MPa 0.07 (0.02 without DMB) 0.08 (0.06 without DMB) 0.10 (0.08 without DMB) 0.13 (0.1 without DMB)
Flow rate limit at l/min 4 7.5 7.5 8.5
DHW delivery l/min 5.5 9.0 10.5 12
Delta T if presented K 28 28 28 28
Hydraulic data
Rated capacity l 0.4 0.4 0.4 0.4
Versions
Temperature adjustment °C 55 55 55 55
Protection class 1 1 1 1
Insulation block Plastic Plastic Plastic Plastic
Heating system Bare wire Bare wire Bare wire Bare wire
Cap and back panel Plastic Plastic Plastic Plastic
Colour white white white white
IP-Rating IP25 IP25 IP25 IP25
Dimensions
Height mm 470 470 470 470
Width mm 225 225 225 225
Depth mm 117 117 117 117
Weights
Weight kg 3.6 3.6 3.6 3.6

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