Installation - oventrop Regusol Installation And Operating Instructions For The Specialised Installer

5.2 Markings
• CE marking on the pump:
CE marking
• Markings on the body:
OV Oventrop

6 Installation

The pipework has to be flushed thoroughly before
installation of the solar station.
NOTICE
The solar station has to be installed vertically (flow
direction of the pump "upwards" to the collector).
This installation position provides a good optical
display of the thermometers, pressure gauge and
flow measuring device.
The functions of the flow measuring device and
the safety valve are only guaranteed when
vertically installed.
Observe warning advice under paragraph 2
(safety notes)!
Suitable measures for thermal protection have to
be taken in order to protect the solar station from
a penetration of steam causing damage to the
components (e.g. central roof heating systems with
short pipes).
Provide an electromotive in-line tank, if required. For
further information on thermal protection visit
www.oventrop.de "Thermal solar plant – Construction,
initial operation and maintenance".
! PRECAUTION
– Do not use any greasing agents or oils for the
installation, as these can destroy the seals. Any
dirt particles or grease or oil residues must be
flushed out before the solar station is installed.
– When choosing the operating fluid, the latest
technical status has to be considered (e.g. VDI
2035).
– Please protect against external forces (e.g.
impacts, vibrations etc.).
After installation, check all installation points for
leaks.
NOTICE
Before starting work, make sure that the pipework
and components have cooled down and been
drained.
Before work commences, please ensure that all
electrical components (controllers, pumps, etc.)
are disconnected from the power supply
The solar station always has to be installed at a
lower level than the collectors so that no steam may
penetrate the expansion tank if stagnation occurs.
If the expansion tank is installed at the same or a
higher level than the solar station, a thermal insulation
loop is required.
The installation has to be flushed with fresh water
after each draining operation.
The solar station is not suitable for direct contact with
swimming pool water.
6.1 Check valve
The product group is supplied pre-assembled. When
the solar plant is in operation, the slot of the check
valve must be in horizontal position.
Position "closed"
Illustr. 6.1 Check valve
Operating position: Check valve closed, passage is
only possible in flow direction.
When putting the system into operation and during
maintenance work (filling and flushing), the check
valve must be open.
Isolation function inactive: Check valve open, passage
is possible in both directions.
Under working conditions, the check valve has to be
set to operating position again.
NOTICE
The difference in density between cold and hot
heat transfer liquid entails a gravity circulation in
the solar circuit
In exceptional cases, check valves can be opened
by strong self-circulation.
Gravity circulation is minimised by installing a
siphon-like pipe loop (see illustr. 6.2) near the
storage cylinder
Alternatively, the installation of an additional
electric isolation device which is activated parallel
to the pump and only opens under working
conditions is recommended.
Position "open"
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