The provided document is a user manual for the Aquatermic Wired Controller XK49, designed for commercial air conditioners. The manual is available in English, Spanish, Italian, Portuguese, and French.
Function Description
The Aquatermic Wired Controller XK49 serves as a central control unit for commercial air conditioning systems. It allows users to manage various operational aspects of indoor units, including:
- On/Off Control: Powering the air conditioning unit on and off.
- Mode Setting: Selecting different operating modes such as Auto, Cooling, Dry, Fan, and Heating. The manual notes that specific modes (e.g., Floor Heating, 3D Heating, Space Heating) will only appear if the indoor unit supports them.
- Temperature Setting: Adjusting the desired temperature within a range of 16°C to 30°C (61°F to 86°F). In Auto mode, the temperature cannot be adjusted directly via the controller buttons. For Fresh Air Indoor Units, the air outlet temperature can only be set in parameter setting status.
- Fan Speed Setting: Cycling through various fan speeds including Auto, Low, Medium-Low, Medium, Medium-High, High, and Turbo. In Dry mode, the fan speed is fixed at low and cannot be adjusted. For Fresh Air Indoor Units, the fan speed is fixed at high.
- Swing Setting: Activating or deactivating the vertical swing function of the indoor unit.
- Remote Shield Function: This feature allows a remote monitor or central controller to disable specific functions of the wired controller, enabling remote control. It includes "All Shield" (disables all controls) and "Partial Shield" (disables shielded controls).
- Child Lock Function: A security feature that disables all buttons on the controller to prevent unintended operation. It can be activated or deactivated by simultaneously pressing the up and down arrow buttons for 5 seconds.
- Gate-Control Function: The controller is equipped with an interface to connect to a gate control system (e.g., a card insertion/removal device). This allows the air conditioning unit to be switched on or off by inserting or removing a card, restoring the unit to its previous state upon card re-insertion.
The controller can manage a single indoor unit, two indoor units, multiple indoor units simultaneously (up to 16 units), or two wired controllers can manage multiple indoor units simultaneously. In multi-unit setups, one wired controller must be designated as the master (address 01) and others as slaves (address 02), with a maximum of two wired controllers per system. The operation mode of the system is based on the master indoor unit.
Important Technical Specifications
- Communication Line Length: The total length of the communication line between the indoor unit and the wired controller should not exceed 250 meters.
- Communication Wire Type: Light/Ordinary polyvinyl chloride sheathed cord (60227 IEC 52 / 60227 IEC 53) with a wire size of 2x0.75~2x1.25 mm² is recommended. For installations in areas with intense magnetic fields or strong interference, shielded wire is necessary. The cord should be circular with twisted cores.
- Gate Control Power Input: The wired controller supports AC 100-240V~50/60Hz or DC 5~24V for the gate control card insertion/removal device. Only one power input type can be chosen.
- Indoor Unit Quantity (Group Control): A single wired controller can control up to 16 indoor units simultaneously within the same indoor unit network.
- Temperature Unit: The controller supports both Celsius (°C) and Fahrenheit (°F) temperature units.
- Static Pressure Levels: The indoor fan motor static pressure can be set to 5 levels (03, 04, 05, 06, 07) or 9 levels (01-09), depending on the indoor unit model.
- High Ceiling Installation: An optional setting for cassette units to adjust for high ceiling installations (standard or high ceiling).
- Timer Function: Supports general timer and clock timer functions, with repetition options for "once" or "everyday."
- Cooling/Heating Setting Temperature (Auto Mode): In Auto mode, the cooling setting temperature range is 17°C~30°C (63°F~86°F), and the heating setting temperature range is 16°C~29°C (61°F~84°F). There are specific temperature difference requirements between cooling and heating settings (≥1°C for Celsius, ≥2°F for Fahrenheit).
- Air Return Plate Opening Angle: For units with an air-return plate, the opening angle can be set to 25°, 30°, or 35°.
- Union Control for Fresh Air Indoor Unit: An optional function allowing the Fresh Air Indoor Unit to turn on/off in sync with common indoor units, or to be controlled manually.
Usage Features
- LCD Display: The controller features an LCD screen that displays various icons and data, including operating mode, fan speed, set temperature, defrost status, shielding status, memory status, master/slave controller status, and error codes.
- Button Interface: Six primary buttons (SWING, FAN, ON/OFF, Up Arrow, Down Arrow, MODE) provide intuitive control over the unit's functions.
- Parameter Enquiry: Users can view various unit parameters (e.g., indoor unit project number, system network indoor unit quantity, wired controller address, outdoor ambient temperature, indoor relative humidity) in both On and Off status.
- Parameter Setting: Allows configuration of detailed operational parameters, such as setting the master indoor unit, infrared receiver status, wired controller address, group control quantity, temperature unit, static pressure, high ceiling installation, timer functions, and specific Fresh Air Indoor Unit settings.
- Error Display: The LCD displays error codes for both outdoor and indoor units, as well as status codes and debugging codes, to assist in troubleshooting. If multiple errors occur, they are displayed sequentially.
Maintenance Features
- Filter Clean Reminder: Although listed as a parameter (C08), the manual explicitly states that the filter-clean reminder function is not available for this wired controller.
- Error Code Diagnostics: The comprehensive list of error codes (for outdoor unit, indoor unit, status, and debugging) is a key maintenance feature, enabling technicians to quickly identify and diagnose issues.
- Installation Instructions: Detailed installation instructions are provided, including communication line selection, installation requirements (avoiding wet, sunny, high-temperature, or water-splashing places), and wiring methods for various multi-unit configurations.
- Disassembly Instructions: A diagram and steps for disassembling the wired controller are included, which would be useful for maintenance or replacement.
- Master Indoor Unit Setting: The ability to designate a master indoor unit is crucial for system commissioning and ensures proper communication and operation within a multi-unit network.
- Remote Shield Function: This feature can be used by service professionals or central control systems to temporarily disable local controls for maintenance or remote diagnostics.
- Power Interruption Handling: The "Memory" status indicates that the indoor unit resumes its original setting state after a power failure and subsequent power recovery, reducing the need for manual reconfiguration after power interruptions.
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