Thermo Products USDT 2004B - 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 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 required maintenance.
3. It is recommended that the unit be connected to the power supply via an on/off switch or plug.
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
well or strapping directly to piping. For the system to function correctly, it is essential that
the sensors are located and installed properly. Sensors must be well insulated in order to
prevent influence by the ambient temperature.
When used outdoors, water must not enter the immersion sleeves. Exposure to moisture (e.g.
condensation) can diffuse through the cast resin and damage the sensor.
Corrosion-resistant immersion sleeve (sensor pockets) must be used when sensors are used in
open loops or swimming pools.
l Collector sensor (red cable with protective terminal box): 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
T-piece on the collector return outlet. Protect the sensor cable from UV and moisture.
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