Appliance Description; Settings And Displays; User Interface On The Appliance - STIEBEL ELTRON DHE 21 SLi Gebrauchs- Und Montageanleitung

OPERATION

Appliance description

3. Appliance description
This appliance with full electronic control and output matching
keeps the outlet temperature constant. The water is heated by the
electronic control unit with motorised valve to precisely the select-
ed temperature. This occurs regardless of the inlet temperature.
DHW temperature
The DHW outlet temperature can be variably adjusted. The
selected temperature is displayed.
Heating system
The bare wire heating system has a pressure-tested copper casing.
The heating system is suitable for hard and soft water areas; it
has low susceptibility to scale build-up. This system ensures rapid
and efficient DHW availability.
Note
The appliance is equipped with an air detector that large-
ly prevents damage to the heating system. If, during op-
eration, air is drawn into the appliance, the heater shuts
down automatically for one minute, thereby protecting
the heating system.
Display backlighting
The display features two-tone backlighting (green / amber).
Efficiency display
Green ECO backlighting indicates that the appliance is operating
in a particularly economical way
- when the output is less than 80 %
- when the maximum output is less than 80 % while the inlet
temperature is higher than 35 °C
- when the maximum output is less than 80 % while the ECO
function is switched on
Under all other operating conditions, the backlighting is amber.
Economy monitor
The appliance has an economy monitor. This is activated by press-
ing the appropriate key. It displays:
- Energy savings*
- Water savings*
- CO savings*
2
- Energy consumption
- Water consumption
* Compared to hydraulic instantaneous water heaters. Calculation
for a 3-person household with individual DHW requirements and
usable energy requirements subject to VDI 2067. Electricity and
water costs can be programmed individually.
24 |DHE SLi
4.

Settings and displays

You can adjust the appliance via the user interface.
Inlet temperature information
If the inlet temperature is higher than the preferred temperature,
e.g. if water has been preheated by solar energy, then the tem-
perature display flashes and the second display indicates the inlet
temperature. No further heating of the water occurs.
1 Temperature display flashes
2 Inlet temperature display
3 Scalding risk LED; red LED when the temperature setting
> 43 °C
Recommended setting for operation with a thermostatic valve
Set the temperature at the appliance to 60 °C.
Following an interruption of the water supply
See chapter "Restarting"
4.1

User interface on the appliance

7
6
5
4
3
2
1
1 Temperature selector
2 Scalding risk LED
3 Memory key
4 Menu key, e.g. ECO
5 Additional value display
6 Heating output display
1
2
3
8
9
10
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