STIEBEL ELTRON DEM 3 - Application Areas; Increasing the Temperature

INSTALLATION
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50 | DEM www.stiebel-eltron.com
15.3 Increasing the temperature
At 230V / 400V, the following water temperature increases occur:
1,4 1,8 2,2 2,6 3,0 3,4
20,0
22,5
25,0
27,5
30,0
32,5
35,0
37,5
40,0
42,5
45,0
4
3
2
1
84�02�02�0029
X Flow rate in l/min
Y Temperature increase in K
1 3.5kW - 230 V
2 4.4kW - 230 V
3 5.7kW - 230 V
4 6.5kW - 400V

Flow rate l/min 2.0
Increasing the temperature K 25
Cold water supply temperature °C 12
Maximum possible outlet temperature °C 37
Note
An outlet temperature of 50°C can be achieved with the
lowest possible flow rate and the following cold water
inlet temperatures:
- DEM 3 >17°C
- DEM 4 >18°C
- DEM 6 >13°C
- DEM 7 >8°C
15.4 Application areas
For the specific electrical resistance and specific electrical
conductivity, see “Data table”.
Standard specifica-
  
Spec. re-
sistance
ρ ≥
Spec. conduc-
tivity σ ≤
Spec. re-
sistance
ρ ≥
Spec. conduc-
tivity σ ≤
Spec. re-
sistance
ρ ≥
Spec. conduc-
tivity σ ≤
Ωcm mS/m μS/cm Ωcm mS/m μS/cm Ωcm mS/m μS/cm
1000 100 1000 890 112 1124 815 123 1227
1300 77 769 1175 85 851 1072 93 933
293811_DEM 3-7_de_en_fr_nl.indb 50 11.10.2017 13:34:57