Manual USDT Revsion 8 - Thermomax Technologies

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USDT 2001 INSTALLATION C 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 the device. 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. Undo the four screws at corners of the housing. The control electronics are mounted on the enclosure cover. Using proper fixing, the controller enclosure can be screwed to the wall with cable entry grommets downwards. Caution: Controller wiring should only be done when the unit is not energized. It is possible to damage the control unit if it is assembled under voltage. 6 Thermo Technologies
USDT 2001 INSTALLATION P ower Connections and Wiring Diagram NOTE 1: Always disconnect the controller from power supply before opening the housing. NOTE 2: The controller should be properly grounded. Flexible wires, 18/3 (gauge/conductor) simplify connection to the terminals. All connections should be secure and adequately tightened, as loose power connections will over-heat, and may cause fire. It is important that the specified output loads (245 Watts) are not exceeded. Where these loads expect to exceed, external relays must be used. It is good practice to install a 3 amps in-line fuse to protect controller and pump. Always keep power cables away from sensor cables and other low voltage signal cables. NOTE 3: To protect against lightning damage, the system must be grounded according local regulation. Sensor failures due to the weather or electrostatic are mostly due to poor grounding. NOTE 4: If step-down transformer is not mounted on the circuit board, the unit should be powered by a 24 VDC. A step-down transformer can be used also instead of DC power source, however, the open circuit voltage of AC source must be below 24 VAC. T C terminal should be connected to the Collector Sensor; T T should be connected to the Tank Sensor. The middle terminal is shared between both sensors. NOTE 5: The power supply is 115 V if step-down transformer is mounted on the circuit board. A load of maximum 3 A should be connected to the load terminals (pump) as shown in both above diagram and circuit board. 7 Thermo Technologies
Page 1 and 2: Revision 8 THERMO TECHNOLOGIES USDT
Page 3 and 4: USDT 2001 INTRODUCTION Introduction
Page 5 and 6: USDT 2001 INSTALLATION INSTALLATION
Page 7: USDT 2001 INSTALLATION • Pool sen
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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