Operation; Other Symbols In This Documentation; Units Of Measurement; Safety - Stiebel Eltron SOL 23 Premium Utilisation Et Installation

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1.3

Other symbols in this documentation

Note
Notes are bordered by horizontal lines above and below
the text. General information is identified by the symbol
shown on the left.
f Read these texts carefully.
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Damage to the appliance and environment
Appliance disposal
f This symbol indicates that you have to do something. The ac-
tion you need to take is described step by step.
1.4

Units of measurement

Note
All measurements are given in mm unless stated oth-
erwise.
2.

Safety

2.1

Intended use

This flat-plate collector is designed to heat a heat transfer medium.
Any other use beyond that described shall be deemed inappropri-
ate. Observation of these instructions is also part of the appropri-
ate use of this appliance.
2.2

Safety instructions

All steps up to the commissioning of this appliance must only be
carried out by qualified contractors.
Contractors are responsible for adherence to all currently applica-
ble regulations during installation and commissioning.
Operate the solar thermal system only if it is fully installed and all
safety equipment is fitted.
WARNING – Injury
Where children or persons with limited physical, sensory
or mental capabilities are to be allowed to control this
system, ensure that this will only happen under supervi-
sion or after appropriate instruction by a person respon-
sible for their safety. Children should be supervised to
ensure that they never play with the appliance.
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3.

Appliance description

The flat-plate collector for roof integration is set into the roof (min.
roof pitch 30°). A continuous collector array ensures that the roof
remains leakproof. The collectors may be fitted either next to each
other or above each other. The collector is designed for a rafter
roof with a tensioned underlay and for a tiled roof.
The flat-plate collector converts light into heat.
The light penetrates the glass cover. This is made from pre-
stressed, highly transparent single pane safety glass. The light
strikes the absorber and is converted there into heat. The highly
selective coating of the absorber and the thermal insulation on
the back of the absorber reduce heat losses to the ambience to
a minimum.
The circulating heat transfer medium is pumped to the DHW cyl-
inder, thus transferring the energy harvested by the collector in
the form of heat. Under certain operating conditions, the inside of
the collector may mist up with condensate. This may happen, for
example, with a large cylinder with low temperature compared
to the environment, or high atmospheric humidity.
4.

Operation

The solar thermal system is designed so that no special measures
are required if no hot water is drawn, even for a prolonged period
(e.g. during a holiday).
Damage to the appliance and environment
The heat transfer medium must not be drained off when
the system is shut down.
5.

Cleaning, maintenance and care

5.1

Annual inspection

Arrange for your heating contractor to check t
system a
nnually.
5.2

Self-cleaning

Generally, solar collectors require no cleaning, as they are largely
self-cleaning. However, in case of severe contamination, e.g. dust
or avian excrement, clean the collector with fresh water.
If you want to clean the collector with water, make sure that it has
not already been heated up by strong sunlight.
5.3

Checking the system pressure

f Regularly check the pressure gauge in the solar station's heat
transfer medium circuit. With a cold solar thermal system
(collector temperature below 30 °C), the value should be be-
tween 0.35 and 0.4 MPa.
Notify your heating contractor if you notice deviations from the
set value.
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