Thermo Technologies USDT 2005 - Manual (Page 4)

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INSTALLATION
Note: This installation procedure is for guidance only, and the installer should verify its
suitability. Make sure that the solar/boiler system is physically installed, manually tested, and is
ready for controlled operation.
he following safety precautions are strongly recommended:
1. Before attempting to install and operate the unit read this instruction manual carefully.
2. Only suitably qualified personnel should carry out installation and any maintenance required.
3. It is recommended that the unit be connected to the power supply via a suitably 6 amps
isolating switch.
4. WARNING: When the unit is connected to the 115-volt power supply and the cover is
opened, high voltage circuits will be exposed. Therefore, when installing the unit ensure
all required connections are made and the cover is attached to the controller box before
turning the power on. Ensure that all the connections are secure. If any maintenance work is
required ensure that the unit is isolated from the power supply before removing the cover.
Never leave the unit unattended if the cover has been removed and the power supply
is connected.
5. Do not exceed unit ratings of 2.15 amps (1/6 HP or 245 Watts pump).
6. It is advisable to route power cables away from sensor cables.
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 infl uenced 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.
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