ensor installation: Temperature sensors may be installed in fluid lines by
mounting in a tee or strapping it to the piping directly. For the system to
function correctly, it is very important that the sensors are located and
installed properly. Make absolutely sure that they are pushed completely into the
optional sensor pockets (Thermowell is not supplied). Sensors must be well
insulated in order to prevent them from being influenced by the ambient
temperature.
When used outdoors, no water should be allowed to get into the immersion
sleeves (lasting impedance change). Generally, sensors should not be exposed
to moisture (e.g. condensation) as this can diffuse through the cast resin and
damage the sensor. Heating at approx. 195 °F for one hour may possibly save
the sensor.
When sensors are used in open loops or swimming pools, make absolutely sure
that immersion sleeves (sensor pockets) are corrosion-resistant.
l Collector sensor (cable with protective terminal box): Either push into a
thermowell (sensor pocket), which is soldered or riveted, directly to the manifold
(vacuum tubes). Or strap it to the collector outlet pipe or the absorber (flat plat
collectors) that projects from the collector housing. The best practice is the
installation of a suitable sensor pocket into a T-piece on the collector return
outlet, to house the collector sensor. Protect sensor cable from UV and moisture.
For vacuum tube collectors, use only PT1000 sensors (480 °F max.
temperature).
l Hot water tank sensor (white cable): In the case of external heat
exchangers, the tank sensor should be installed with an immersion sleeve in the
return leg (cold side) of the heat exchanger. In tanks with integrated heat
exchangers, the sensor pocket should be fitted at the exchanger's return outlet
so that the immersion sleeve goes into the exchanger tube.
l Clip-on installation: Best secured to the appropriate line with pipe clamps,
clips, etc. whereby you must make sure that the material is suitable (non-
corrosive, heat-proof, etc.). It is advisable to insulate the sensor well in order to
measure the pipe temperature accurately and to prevent any influence from
ambient temperature.
l Storage tank installation: The sensor required for the solar loop is installed
in the lower part of the storage tank. If there is no provision for tank sensor, it is
advisable to push the sensor beneath the insulation –keeping it close to the
inner tank wall at the desire tank location.
l Pool sensor installation: Place a heat conductive T-piece on the suction
line directly at the pool outlet and screw in the sensor with an immersion sleeve
(check corrosion resistance of the material used). Another possibility would be to
