Collector Sensor; Lightning Protection; Earthing System; Expansion Vessel - STIEBEL ELTRON SOL 27 Premium W Bedienung Und Installation

f Fit the connecting clip at the junction between collector and
plug-in connection.
f Secure the connecting clip by pushing down the locking tab.
f Fit the roof outlet at the return end of the collector array in
the same way.

10.6 Collector sensor

The correct connection of the collector sensor is crucial to the
correct function of the solar thermal system.
f Secure the sensor lead, with cable ties for example.
f Connect the sensor lead to the solar controller.

10.7 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.
10.7.1 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.
f Pre-drill the holes (Ø 5 mm). Position the drill holes on the
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.
1
1 Drill holes (Ø= 5 mm)
10.7.2 Mounting frame lightning protection
f Connect the mounting frame to the lightning protection
system using screw or clamp connections.
10.7.3 Pipework lightning protection
f Connect the pipework to the lightning protection system in
close proximity to the collector (above the roof) using pipe
clips.

10.8 Earthing system

f Earth the pipework in accordance with current regulations.
All pipes must be connected to the building earthing system via
a short connection.

10.9 Expansion vessel

f Set the expansion vessel to a pre-charge pressure of
0.3 MPa (3 bar).

10.10 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.
Note
Flush the system with fresh water and not with heat
transfer medium.
Damage to the appliance and the environment
Avoid frost periods when you flush the system with water.