Manual USDT Revsion 8 - Thermomax Technologies

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USDT 2001 INSTALLATION General Information: USDT 2001 is suitable for Closed and Open Loop systems. Closed Loop Solar Heating Systems are the preferred option for extremely cold areas and areas with questionable water quality. Following arrangement shows an application example in a closed loop system. 1. Collector 7. Check Valve 13. Pressure Gauge 2. Collector Sensor 8. Hose Bibs for Filling and Flushing 14. Collector Supply 3. Manual Air Valve 9. Expansion Tank 15. Heat Exchange Coil 4. Hot Water to Taps 10. Air Purge and Air Vent 16. Solar Hot Water Tank 5. Tempering Valve 11. Circulating Pump with flanges or couplings 17. Immersion Heater 6. Collector Return 12. Pressure Relief Valve 18. USDT 2001 Controller Operation: USDT Controller (18) will switch on the pump (11) when the temperature at the collector sensor T C is higher than the return temperature T R by at least the pre-selected amount T. The pump circulates a heat transfer fluid around the loop. Heat from the collector is transferred to the storage tank through the heat exchange coil. With the pump running, if T is less than preset value, the pump will switch off. When a preset tank temperature is reached at T MAX , the controller can switch off the pump. The check valve (non-return valve) prevents heat from the tank rising towards the collector should the tank be warmer (e.g. at night). 2 Thermo Technologies
USDT 2001 INSTALLATION 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 is ready for controlled operation. T he following safety precautions are strongly recommended: 1. Before attempting to install and operate the unit read this instruction manual carefully. 2. Suitably qualified personnel should only 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 (115-volt model) 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 made 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. 3 Thermo Technologies
Page 1 and 2: Revision 8 THERMO TECHNOLOGIES USDT
Page 3: USDT 2001 INTRODUCTION Introduction
Page 7 and 8: USDT 2001 INSTALLATION • Pool sen
Page 9 and 10: USDT 2001 INSTALLATION P ower Conne
Page 11 and 12: USDT 2001 OPERATION ADVANCED MODE S
Page 13: USDT 2001 Sensor Resistance vs. Tem

Manual USDT Revsion 8 - Thermomax Technologies

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