Eagle 2 Differential Temp. Controller w/ Display

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 2 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
• Large easy to read 40 character (20x2) back light LCD display showing every parameter measured and controlled by the microprocessor.
• Plugin adapter REMOTE DISPLAY for IMC’s monitor and indicator for distances up to 150 feet with a CAT-5 cable.
• Fault LED indicators for quick servicing and diagnostics.
• PC Serial DATA port with built in transmitter for up to 500 foot long cable for ease in remote startup and diagnostics. Full industrial isolation is available for safe PC interface.
• Long-term diagnostics and PC data logging using “Terminal” software that is included with Windows OS.
• Fast and easy installation with screw-less sensor terminals and easy access for all other wiring.
• Electrostatic discharge protected.
• True one HP Hi-Reliability relay operation.
• Polyester coated 16 gage rugged steel enclosure.
• Industrial Rated 400 °F(204°C) 10 K thermistors with +/- 1 °F accuracy.
• Two additional auxiliary Thermistor inputs which can be located up to 1000’ away.
• Selectable Overrides low temperature Shut down Freeze protection SAFE for or modes for operation.

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.

LOW TEMPERATURE SHUT DOWN
This feature is available to prevent the system from operating at low outdoor temperatures. If this feature is enabled normal operation will stop when the COLLECTOR temperature falls below 50 degrees F. The PUMP relay will then be turned off. Normal control operation will not resume until the COLLECTOR temperature returns to 70 degrees or above. To enable this feature, a jumper must be placed onto the jumper pins marked "LO" on the circuit board. Only ONE of these two override features can be enabled.

FREEZE PROTECTION OVERRIDE
This feature is available to prevent a non-drain back “water ” system from freezing when the outdoor temperature drops too low. If this feature is enabled normal operation will stop when the COLLECTOR temperature falls below 37 degrees F. The PUMP relay will then be turned on until the COLLECTOR temperature reaches 52 degrees. Normal control operation will resume above this temperature. To enable this feature, a jumper must be placed onto the jumper pins marked “FZ’ on the circuit board. Only ONE of these two override features can be enabled.

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, BLUE TOOTH 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 labeled “2S”, 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 same jumper is placed in position labeled ”6M’, then DATA will be sent every 6 minutes. This will allow a more suitable data-send rate for long term DATA LOGGING, specially when storing the data in a “CAPTURE” file set up in the PC “Terminal” communications program such as “Hyper Terminal” or “Terminal”.

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