STIEBEL ELTRON SOL 27 BASIC Bedienung Und Installation Seite 27

INSTALLATION
INSTALLATION
10.6 Lightning protection
If the building already has a lightning protection system, the
collector casing, mounting frame and pipework must be connected
to the existing lightning protection scheme.
10.6.1 Collector casing lightning protection
Connect the collector to the lightning protection system using
screw fittings. Use two stainless steel self-tapping screws
(Ø 6.3 mm) per collector.
Pre-drill the holes (Ø 5 mm). Position the drill holes on the
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lower part of the front of the collector in the area which is
shaded in the following illustration. When drilling the holes,
maintain a distance of at least 100 mm from the corner of the
collector casing.
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1 Drill holes (Ø= 5 mm)
10.6.2 Mounting frame lightning protection
Connect the mounting frame to the lightning protection system
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using screw or clamp connections.
10.6.3 Pipework lightning protection
Connect the pipework to the lightning protection system in close
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proximity to the collector (above the roof) using pipe clips.
10.7 Earthing system
Earth the pipework in accordance with current regulations.
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All pipes must be connected to the building earthing system via
a short connection.
10.8 Expansion vessel
Set the expansion vessel to a pre-charge pressure of
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0.3 MPa (3 bar).
10.9 Flushing the pipework
Before connecting the collectors, thoroughly flush the pipework
installed in the building with water so that no foreign matter
remains in the system.
Flush the system with fresh water and not with heat
!
transfer medium.
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Avoid frost periods when you flush the system
!
with water.
Use a powerful pump with an operating pressure of approximately
0.4 MPa (4 bar) for flushing.
Alternatively, you can also use a power drill pump.
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1 Solar compact installation
2 Heat transfer medium
3 Filter
4 Fill pump
Possible method:
Connect the water supply to the fill & drain valve beneath the
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pressure gauge
Connect the water drain to the fill & drain valve beneath the
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flow meter.
Connect the solar flow and the solar return with a water hose.
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This way, you replace the collector line which will not be
connected until later, and prevents contamination from being
drawn into the collector pipes.
Close the adjusting valve in the solar module by turning the slot
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on the flow rate adjusting screw (above the flow rate display)
to the horizontal position. This ensures that the entire system
is supplied.
Disable the gravity brake by turning the fill & drain valve to a
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45° position.
Close the shut-off valves upstream of the air vent valves.
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Flush the pipes for at least 15 minutes.
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After flushing, open the adjusting valve in the solar module by
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turning the slot on the flow rate adjusting screw (above the flow
rate display) to the vertical position.
Remove the hose which replaced the collector line and allow
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the pipes to fully drain.
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