Increasing The Temperature; Application Areas - STIEBEL ELTRON DEM 4 Bedienung Und Installation

INSTALLATION
Specification

15.3 Increasing the temperature

At 230 V / 400 V, the following water temperature increases occur:
45,0
42,5
40,0
37,5
35,0
32,5
30,0
27,5
25,0
22,5
20,0
1,4 1,8 2,2
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
Example DEM 3 with 3.5 kW
Flow rate
Increasing the temperature
Cold water supply temperature
Maximum possible outlet temperature
52 | DEM
2,6 3,0 3,4
l/min
K
°C
°C
Note
An outlet temperature of 50 °C can be achieved with the
lowest possible flow rate and the following cold water
inlet temperatures:
4
- DEM 3 > 17 °C
- DEM 4 > 18 °C
3
- DEM 6 > 13 °C
2
- DEM 7 > 8 °C
1

15.4 Application areas

For the specific electrical resistance and specific electrical
conductivity, see "Data table".
Standard specifica-
tion at 15 °C
Spec. Spec. conduc-
tivity σ ≤
resist-
ance ρ ≥
Ωcm mS/m μS/cm
1000 100 1000
1300 77
2.0
25
12
37
20 °C 25 °C
Spec. Spec. conduc- Spec.
tivity σ ≤
resist- resist-
ance ρ ≥ ance ρ ≥
Ωcm mS/m μS/cm
890 112 1124
769 1175 85 851
www.stiebel-eltron.com
Spec. conduc-
tivity σ ≤
Ωcm mS/m μS/cm
815 123 1227
1072 93 933