Test Symbols; Eu Declaration Of Conformity; Appliance Description; Settings And Displays - Stiebel Eltron DEL 18/21/24 Plus Utilisation Et Installation

oPErATIoN

Appliance description

CAUTION Burns
If operating with preheated water, e.g. if using a solar
thermal system, observe the following information:
- The DHW temperature may exceed the set tempera-
ture or a set temperature limit.
- The dynamic anti-scalding protection between the
appliance and a wireless remote control may not be
effective.
f In such cases, limit the temperature with an up- f
stream central thermostatic valve (e.g. ZTA 3/4).
WARNING Injury
!
The appliance may be used by children aged 3 and older
and persons with reduced physical, sensory or mental
capabilities or a lack of experience and know-how, pro-
vided that they are supervised or they have been in-
structed on how to use the appliance safely and have
understood the potential risks. Children must never play
with the appliance. Children must never clean the ap-
pliance or perform user maintenance unless they are
supervised.
Material losses
!
The user should protect the appliance and its tap against
frost.
2.3

Test symbols

See type plate on the appliance.
2.4

EU Declaration of Conformity

Note
DEL Plus: STIEBEL ELTRON hereby declares that the
radio equipment type complies with Directive 2014/53/
EU. The full text of the EU Declaration of Conform-
ity can be found at the following internet address:
www.stiebel-eltron.de/downloads
3. Appliance description
The appliance switches on automatically as soon as you open the
hot water valve on the tap. When you close the tap, the appliance
switches off again automatically.
The appliance heats water as it flows through it. The set tempera-
ture is adjustable. Upwards of a certain flow rate, the control unit
selects the required heating output, subject to the temperature
selected and the cold water temperature.
The electronically controlled instantaneous water heater with au-
tomatic output matching maintains a consistent outlet tempera-
ture. It is irrespective of the inlet temperature, up to the maximum
output of the appliance.
If the appliance is operated with preheated water and the inlet
temperature exceeds the selected temperature, the word "hot"
and the inlet temperature are displayed alternately, and the "hot"
LED flashes. The water is not heated further.
28 | DEL Plus
You can store different set temperatures and call them up quickly.
With the ECO function, the flow rate is limited to 3 preset levels.
The appliance has setting options for a temperature limit (Tmax
function, user) and internal anti-scalding protection (qualified
contractor). The backlight switches on automatically as soon as
water starts to flow through the appliance or you make a change
on the user interface. The backlight switches off automatically
after water stops flowing or if no action is performed.
Heating system
The bare wire heating system is enclosed within a pressure-tested
plastic jacket. The heating system with its stainless steel heater
spiral is suitable for hard and soft water areas and is largely in-
susceptible to scale build-up. The heating system ensures rapid
and efficient DHW provision.
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 appliance
shuts down for one minute, thereby protecting the heat-
ing system.
4.

Settings and displays

4.1

User interface

3
2
1
1 Temperature selector
2 "hot" scald warning LED, at temperatures higher than 43 °C
3 Temperature memory buttons 1 and 2
4 Display
5 ECO button with ECO level selection / Menu call-up
4
T
Tmax
5
www.stiebel-eltron.com