Installation instructions
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Installation instructions
Sensor installation
The sensors must be arranged and installed properly for the system to function correctly. To this end,
make sure also that they are completely inserted in the immersion sleeves. The threaded cable con-
nections provided serve as a strain relief. The clip-on sensors must be insulated to protect them from
being influenced by the ambient temperature. Water must be kept out of the immersion sleeves when
used outdoors (
damage from freezing
).
In general, the sensors may not be exposed to moisture (such as condensation water), which might
enter the cast resin and damage the sensor. If this happens, heating the sensor to 90°C for an hour
might help. When using immersion sleeves in NIRO cylinders (inoxydable) or pools, pay attention to
their
non-corrosion properties
.
Collector sensor (red or grey cable with connection box)
: Insert either in the tube directly sol-
dered or riveted to the absorber and sticking out of the collector’s frame or set a t-shaped connector
on the outer collector’s flow collector tube. Screw an immersion sleeve with an MS (brass) threaded
cable connection (= to protect from moisture) into the t-shaped connector and insert the sensor. To
protect from lightening, the connection box has an overvoltage protection which is fixed in a parallel
way between the sensor and the expansion cable.
Boiler sensor (boiler flow):
This sensor is either screwed into the boiler using an immersion sleeve
or at a short distance from the boiler on the flow.
Cylinder sensor
: The sensor that the solar power system needs should be used with an immersion
sleeve for fin coil heat exchangers just above the exchanger or, if integrated bare-tube heat exchang-
ers are used, on the lower third of the exchanger or the exchanger’s return line so that the immersion
sleeve is inside the exchanger’s tube. The sensor that monitors the heating of the cylinder from the
boiler is installed at the level of the desired amount of warm water during the heating season. The
plastic threaded cable connections provided can be used to provide strain relief. It should not be
installed below the respective register or heat exchanger in any case.
Buffer sensor
: The sensor that the solar power system needs is installed on the bottom of the cylin-
der just below the solar heat exchanger using the immersion sleeve provided. The plastic threaded
cable connections provided can be used to provide strain relief. It is recommended that the sensor
between the middle and the upper third of the buffer cylinder be used together with the immersion
sleeve as a reference sensor for the heater’s hydraulics or - flush with the cylinder’s wall – inserted
under the insulation.
Pool sensor (swimming pool):
Put a T-shaped connector on the suction line immediately on the
line leading from the pool and screw the sensor in with an immersion sleeve. In the process, make
sure that the material used is non-corroding. Another option is to put the sensor on the same spot
using hose clamps or adhesive tape and to provide thermal insulation for ambient influences.
Clip-on sensor
: Use pipe clamps, hose clamps, and the like must be attached to the respective line.
Make sure the material used is adequate (corrosion, temperature resistance, etc.). Then, the sensor
has to be well insulated so that the tube temperature is measured exactly and the ambient tempera-
ture does not influence the measurement.
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