Hot Water Output; Application Areas/Conversion Table; Fault Conditions - Stiebel Eltron DHX 3.5-1 Trend Funcionamiento E Instalación

INSTALLATION

17.3 Hot water output

The domestic hot water (DHW) output is subject to the connected
power supply, and the cold water inlet temperature. The rated volt-
age and rated output can be found on the type plate.
Power output in kW
Rated voltage
Model
DHX
3.5-1
Trend 3.5
5.4
DHX 8-2
Trend 7.2
7.2
DHX 10-2
Trend 9.6
DHX 12-2
9.0
Trend &
Plus
12.0
DHX 15-2
10.8
Trend &
Plus
14.4
Power output in kW
Rated voltage
Model
DHX
3.5-1
Trend 3.5
5.4
DHX 8-2
Trend 7.2
7.2
DHX 10-2
Trend 9.6
DHX 12-2
9.0
Trend &
Plus
12.0
DHX 15-2
10.8
Trend &
Plus
14.4
22 | DHX Trend & DHX Plus
100 °F DHW output in gpm
Cold water inlet temperature
41 °F 50 °F 59 °F 68 °F
0.41 0.48 0.58 0.75
0.63 0.74 0.9 1.15
0.83 0.98 1.2 1.54
0.83 0.98 1.2 1.54
1.11 1.31 1.6 2.05
1.04 1.23 1.5 1.92
1.39 1.64 2.0 2.56
1.24 1.46 1.78 2.28
1.67 1.97 2.4 3.07
122 °F DHW output in gpm
Cold water inlet temperature
41 °F 50 °F 59 °F 68 °F
0.3 0.33 0.38 0.44
0.46 0.51 0.59 0.68
0.61 0.68 0.78 0.91
0.61 0.68 0.78 0.91
0.81 0.91 1.04 1.21
0.76 0.85 0.98 1.14
1.01 1.14 1.3 1.52
0.9 1.02 1.16 1.35
1.21 1.37 1.56 1.82
Power output in kW
Rated voltage
Model
DHX
3.5-1
Trend 3.5
5.4
DHX 8-2
Trend 7.2
7.2
DHX 10-2
Trend 9.6
DHX 12-2
9.0
Trend &
Plus
12.0
DHX 15-2
10.8
Trend &
Plus
14.4
Power output in kW
Rated voltage
Model
DHX
3.5-1
Trend 3.5
5.4
DHX 8-2
Trend 7.2
7.2
DHX 10-2
Trend 9.6
DHX 12-2
9.0
Trend &
Plus
12.0
DHX 15-2
10.8
Trend &
Plus
14.4

17.4 Application areas/conversion table

Here data is shown for electrical resistivity and electrical conduc-
tivity.
Standard specifica-
Min. Max. Min.
resistivity conductivity ≤ resistivity
ρ ≥ ρ ≥
Ωcm mS/m μS/cm Ωcm
1100 91 910 970
17.4.1 Sizing the pipework
When calculating the size of the pipework, an water heater pressure
drop of 14.5 psi (0.1 MPa) is recommended.

17.5 Fault conditions

In the event of a fault, temperatures up to 176 °F (80 °C) at a pressure
of 145 psi (1.0 MPa) can occur briefly in the installation.
38 °C DHW output in l/min
Cold water inlet temperature
5 °C
10 °C
15 °C
20 °C
1.5 1.8 2.2 2.8
2.3 2.8 3.4 4.3
3.1 3.7 4.5 5.7
3.1 3.7 4.5 5.7
4.2 4.9 6.0 7.6
3.9 4.6 5.6 7.1
5.2 6.1 7.5 9.5
4.6 5.5 6.6 8.5
6.2 7.3 8.9 11.4
50 °C DHW output in l/min
Cold water inlet temperature
5 °C 10 °C 15 °C 20 °C
1.1 1.3 1.4 1.7
1.7 1.9 2.2 2.6
2.3 2.6 2.9 3.4
2.3 2.6 2.9 3.4
3.0 3.4 3.9 4.6
2.9 3.2 3.7 4.3
3.8 4.3 4.9 5.7
3.4 3.8 4.4 5.1
4.6 5.1 5.9 6.9
Max. Min. Max.
conductivity ≤ resistivity conductivity
ρ ≥
mS/m μS/cm Ωcm mS/m μS/cm
103 1031 895 112
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≤
1117