Thermo Products USDT2004 - Manual (Page 3)

3
INSTALLATION
Note: This installation procedure is for guidance only, and the installer should verify its
suitability. Make sure that the solar system is physically installed, manually tested, and ready for
controlled operation.
he following sa fety 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 required maintenance.
3. It is recommended that the unit be connected to the power supply via an isolating switch of 6
amp.
4. WARNING: When the unit is connected to the 115-volt power supply and the cover is
opened, high voltage circuits will be exposed. When installing the unit, all required
connections should be completed and the cover attached to the controller box before turning
the power on. Ensure that all connections are secure. If any maintenance work is required
isolate the unit 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 3.15 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 essential
that the sensors are located and installed properly. They MUST be 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, water must not enter the immersion sleeves (lasting impedance change).
Exposure to moisture (e.g. condensation) can diffuse through the cast resin and damage the
sensor. In this event, heating at approx. 195 °F for one hour may reverse the damage.
When sensors are used in open loops or swimming pools, corrosion-resistant immersion sleeve,
(sensor pockets), must be used.
l 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,
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