•Collector sensor (red cable with protective terminal box): Either push into a thermowell, (sensor pocket), which is soldered or riveted directly to the manifold (vacuum tubes). Alternately, strap the sensor to the collector outlet pipe or the absorber (flat plate collectors) that projects from the collector housing. Ideally, house the collector sensor (encased in a suitable sensor pocket) into a
•Return (tank) sensor (white cable): The sensor required for the solar loop return is installed in the lower part of the storage tank. If there is no provision for this tank sensor, push the sensor beneath the insulation – keeping it close to the inner tank wall at the desire tank location.
For 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 to the collector.
•Sensor cable extension: Sensor cables (22/4 AWG telephone cable, you need only two wires of 4) can be extended up to 150 ft. A connection between the sensor and extension can be established as follows:
Cut the supplied heat
Slide larger tubing (about ¾ “) over the entire completed splice. Heat gently all around until tubing shrinks tight. This connection can then be drawn gently into the pipe work. Only two of the wires are required for the sensor cable; the other two wires are spare wires.
Caution: Do not overheat the tubing! Remove heat as soon as the tubing shrinks tight, as material will continue to shrink. With flame source, use even back and forth motion all around tubing. A heat gun may be used, if available. Let tubing cool for maximum strength.
Controller unit installation: For viewing comfort, the controller unit should be positioned at eye level. For optimum longevity, avoid extremes of temperature in the placement of electronic equipment. In addition, avoid heavy electrical loads, switches or contactors as these
may cause electrical and electromagnetic interference with the unit (when switched on or off).
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