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General| Brand | CIAT |
|---|---|
| Model | microciat MRS2.2A |
| Category | Control Unit |
| Language | English |
Details the inputs and outputs of the main CPU card.
Describes the functions and display elements of the control card.
Explains the features and capabilities of the optional remote control unit.
Details the connections and functions of terminal J1 on the main CPU card.
Details the connections and functions of terminal J5 on the main CPU card.
Details the connections and functions of terminal J11 on the main CPU card.
Details the connections and functions of terminal J15 on the main CPU card.
Describes the function of the Local/External commutator switch.
Provides a detailed description of the display and control card's components and functions.
Explains the meaning of the various indicator lights on the display card.
Explains how to access and navigate the unit's configuration parameters.
Lists and defines the primary configuration parameters for the unit.
Details adjustable parameters that can be modified by the user for fine-tuning operations.
Lists parameters that can be read from the unit for monitoring purposes.
Describes how the module controls temperature based on setpoints and ambient conditions.
Explains the function that balances compressor running times for even wear.
Details the protection mechanism preventing frequent compressor starts.
Describes the protection features for the compressor motor against overloads.
Explains the high-pressure safety feature for each refrigerant circuit.
Explains the low-pressure safety feature for each refrigerant circuit.
Details the protection for the air handling fan motor against overloads.
Describes motor protection for external coil fans in cooling and heating modes.
Explains how filter clogging is detected and signaled.
Details the air flow monitoring and safety function, including its optional nature.
Describes the optional smoke detection system and its safety responses.
Explains the optional fire thermostat function and its safety responses.
Describes the unsmoke request function and its safety operations.
Covers anti-frost, electric coil, gas coil safety, and burner safety for the additional coil.
Details the optional extraction fan monitoring and automatic starting features.
Explains the defrosting cycle, its triggers, and operational logic.
Describes the mixing box operation and damper positions for different modes.
Details the control of fresh air dampers based on voltage signals.
Explains how to manually control fresh air dampers using the remote control.
Describes how to limit discharge air temperature in cooling and heating modes.
Explains how to limit compressor operation based on internal coil inlet temperature.
Details how sensor disconnections or short circuits are detected and signaled.
Covers checks for external control connections like automaticity and validation signals.
Describes the anti-frost function that maintains minimum room temperature when the unit is stopped.
Explains how to shift cooling and heating setpoints using specific parameters.
Details the heating mode operation, including compressor and coil activation.
Explains the cooling mode operation, comparing external and ambient conditions.
Guides on how to set and adjust the cooling setpoint using the control panel.
Guides on how to set and adjust the heating setpoint using the control panel.
Explains the external control for automatic unit operation via clock or other signals.
Describes the unoccupation control input integrated with automatic running.
Details the external control to validate cooling operation or for cooling unloading.
Details the external control to validate heating operation or for heating unloading.
Explains the external control for unit unloading based on compressor or coil configuration.
Describes the external control for shifting heating or cooling setpoints.
Provides guidance on connecting external controls, emphasizing proper wiring and relays.
Details the specifications for the communication link cable, including electrical properties.
Explains the proper shielding connection for communication cables to prevent interference.
Provides guidelines for routing communication cables to avoid electrical interference.
Lists the supported function codes for the Modbus communication protocol.
Explains the coding format for analog values used in the Modbus protocol.
Details the composition and structure of Modbus registers for tele-information and signaling.
Presents a table of bits and their corresponding meanings for Modbus communication.
Lists alarm codes and their associated meanings for the unit.
Describes the telecontrol register for sending commands to the unit.
Details the tele-adjustment registers for modifying unit setpoints and parameters.
Lists registers for measuring and reading various unit parameters like temperature and humidity.
Details registers for reading compressor hour meters and other time-based data.
Lists registers for inquiring about configuration parameters like circuit numbers and coil types.
