Thermo Technologies USDT 3000 - Manual (Page 4)

3
condensation) as this can diffuse through the cast resin and damage the sensor. If exposed to
moisture, 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 FKP 6 (Black Cable, Five Feet): The cable of the collector sensor is
silicone coated and is temperature and weather resistant. Insert the sensor sleeve into a thermo-
well (sensor pocket), or strap it to the collector outlet pipe that projects from the collector housing.
The best practice to house the collector sensor is to install a suitable sensor pocket into a T-piece
on the collector outlet pipe. It is good practice to shield the sensor cable and its extension from
UV rays and moisture.
l
Hot water return sensor FRP6 (Gray Cable, Nine Feet): The return (collector inlet) sensor
should be installed with an immersion thermo-well in the return leg (cold side) of the heat
exchanger. If there is no provision for a tank sensor, it is advisable to push the sensor sleeve
beneath the insulation – keeping it close to the inner tank wall at the desired tank location. The
sensor required for the solar loop “cold” leg is installed usually in the lowest part of the storage
tank.
l
Clip-on installation: The Sensor is 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 in order to measure the pipe temperature accurately
and to prevent any influence from surrounding temperature.
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 attach the sensor at the same place with clips or
adhesive tape, using appropriate thermal insulation against environmental influences.
l
Sensor cable extension: Sensor cables (22/4 AWG telephone cable) can be extended up
to 150 ft.
ontroller unit installation: For viewing comfort, the controller unit should be
positioned at eye level. It is always good practice to keep
electronic equipment away from cold and heat, as extremes
of temperature may reduce the lifetime of these devices. It is
also good practice to keep electronic equipment away from
heavy electrical loads, switches or contactors as these may
cause electrical and electromagnetic interference when
switched on or off.
1. Unscrew the cross-recessed screw off the cover and
remove it from the housing.
2. Mark the upper fastening point on the wall and install
the enclosed dowel and screw it in.
3. Hang up the housing at the upper fastening point and
secure the base unit using the lower fastening hole.
C