37
Installation - for contractors
15.3
Increasing the temperature
At 230 V / 400 V, the following water temperature increas-
es 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
_0
2_0
2_00
29
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
MTD 350
with 3.5 kW
Flow rate
l/min
2.0
Increasing the temperature
K
25
Cold water supply temperature
°C
12
Maximum possible outlet temperature
°C
37
15.4
Application areas
For the specific electrical resistance and
specific electrical conductivity, see "Data
table".
Standard specifica
-
tion at 15 °C
20 °C
25 °C
Spec.
resist-
ance
ρ ≥
Spec. conduc-
tivity σ ≤
Spec.
resist-
ance
ρ ≥
Spec. conduc-
tivity σ ≤
Spec.
resist-
ance
ρ ≥
Spec. conduc-
tivity σ ≤
Ωcm
mS/m
μS/cm
Ωcm
mS/m
μS/cm
Ωcm
mS/m
μS/cm
1100
91
909
970
103 1031
895
112
1117
