STIEBEL ELTRON HDB-E Si 01.11.2012 - 31.01.2013 - Manual (Page 27)

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INSTALLATION
SpeciÐcation
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 data
Rated output 1 kW 11.0 18 21 24
Rated voltage 1 V 400 400 400 400
Rated current 1 A 16 26 31 35
Fuse 1 A 16 25 32 35
Rated output 2 kW 10.1 16.2 19 21.7
Rated voltage 2 V 380 380 380 380
Rated current 2 A 15.4 24.7 29.5 33.3
Fuse 2 A 16 25 32 35
Rated output 3 kW 11,5 19,4 22,6 25,8
Rated voltage 3 V 415 415 415 415
Rated current 3 A 16 27 32,2 36,3
Fuse 3 A 16 32 32 40
Phases 3/PE 3/PE 3/PE 3/PE
Frequency Hz 50/- 50/- 50/- 50/-
Max. mains impedance Zmax to DIN EN 61000-3-11 Ohm 0.33 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