Eagle 1 Differential Temp. Controller

The advanced electronic control for today’s sophisticated solar systems

This Differential Temperature Control is designed to provide maximum operating and flexibility to effectively manage today’s innovative solar energy systems. The Eagle 1 is capable of handling most differential temperature control functions for operation of domestic water heating and sophisticated space heating and cooling. It is especially well suited for Antifreeze, Drainback and Recirculate type solar heating systems.

BENEFITS

• Microprocessor accuracy and dependability with ambient operation from -10 to 120 F
• Diagnostic and Fault LED indicators for quick servicing
• Fast and easy installation with screw-less sensor terminals and easy access for all other wiring.
• PC Serial DATA port for complete ease in startup and diagnostics.
• Long term diagnostics and PC data logging with Windows “Terminal” standard software.
• Plugin adapter for IMC’s REMOTE DISPLAY monitor and indicator
• Electrostatic discharge protected
• True one HP Hi-Reliability relay operation
• Industrial Rated 400 F(200 C) 10 K thermistors with +/- 1 F accuracy.
• Thermistor sensors can be located up to 1000’ away
• Polyester coated 16ga. steel rugged enclosure

TEMPERATURE DIFFERENCE CONTROL
When the temperature difference between the sensor in the solar collector and the sensor in the storage tank exceeds the “temperature difference” dialed in the controller, the pump relay will actuate after a 30 second delay. The blue LED indicator will also turn on. If the temperature difference decreases and falls below 4 F (2.2 C) the pump relay and the blue LED indicator will turn off immediately.

HIGH LIMIT CONTROL
If the temperature in the storage tank exceeds the HI-LIMIT temperature dialed in the controller, the pump will be turned OFF immediately regardless of the status of the "temperature difference" that exists between the storage tank and the solar collector. The blue LED indicator will also turn be turned OFF. Should the storage tank temperature fall below the setting in the HI-LIMIT in the controller then control action will return back to its normal control operation. The pump relay will always have a 30 second delay to the ON position and the blue LED will always show its STATUS condition.

DATA PORT
Requires an IMC Data port/RS232 adapter. This will allow interface to a standard PC serial port. The adapter can further accept a serial/USB converter to connect directly to PC or Laptops that only have USB ports. If wireless operation is desired for short distances, Bluetooth transceiver can also be connected. The rate at which the data is sent from the EAGLE solar controller is determined by a jumper in the controller as show in the controller diagram. If the jumper is placed in position one it will send one complete line of "Total system information" to the PC every 2 seconds which is necessary when performing diagnostics or a system startup. If the second jumper position is selected then DATA will be sent every 6 minutes. This will permit long term data logging when receiving the data into a capture file set up in the PC "Terminal" communications program.

See more technical information and installation instructions about this differential temperature control in the Product Documentation section above!