LCF02 QTouch AO5DO Fan Coil Controller
Datasheet
Application
Fan coil controller for room temperature control with intuitive operation via real glass display and optional CO2 sensor with TLF function. Suitable for 3-speed or EC fans in 2- or 4-pipe operation.
Security Advice – Caution
- Only approved for the intended use described in the application; unauthorized conversion or modification is prohibited.
- Must not be used in conjunction with devices that directly or indirectly serve human, health or life safety purposes or whose operation could pose a risk to people, animals or property.
- The state of the art, applicable laws, standards and regulations at the time of installation must be applied.
- Installation and assembly only by authorized electricians.
- Only connect devices with a power connection if the connecting cable is disconnected.
WARNING! Danger to life due to live components!
CAUTION! Risk of electric shock! There may be live parts inside the housing. Particularly with appliances in mains voltage mode (normally between 90 and 265 V), touching live parts can result in personal injury.
Notes on Disposal
The crossed-out wheelie bin symbol indicates that the product or removable batteries must not be disposed of with household or commercial waste. Within the EU, you are legally obliged to dispose of the product separately and appropriately in accordance with the national laws of your country. Alternatively, please contact your supplier or Thermokon Sensortechnik GmbH. Further information can be found at: www.thermokon.com
Mounting Advise Room Sensors
The accuracy of the room sensors is influenced by the technical specifications as well as the positioning and the installation type.
During Assembly:
- Seal mounting box (if present).
- Installation type, air draught, heat source, radiation heat or direct sunlight can affect the measurement.
- Building material specific properties of the installation place (brick-, concrete-, cavity wall, ...) can affect the measurement.
Assembly not recommended in:
- Air draught (e.g.: close to windows / doors / fans ...)
- Near heating sources,
- Direct sunlight
- Niches / between furniture /
Technical Data
| Parameter | Description | Value |
|---|---|---|
| Measuring values | Temperature & humidity, CO2 (optional) | |
| Output switch contact | Terminal 1 | 2 (for heating and cooling, 2-point control or PWM) | 2 normally open contacts, max. 250 V~/3A |
| Terminal 3 | 4 | 5 - LO | ME | HI (for fan) | 3x normally open contact, max. 250 V~/3A | |
| Output voltage | Terminal 1 | 0..10 V, min load 10kΩ |
| Network technology | RS485 Modbus, RTU, half-duplex, baud rate 4.800, 9.600, 19.200 or 38.400; parity: non (2 stopbits), even or odd (1 stopbit), RS485 bus load: 1¼ unit load according to RS485 standard; Fail-safe Biasing required. Follow the instructions in the Modbus standard (§3.4.6.) | |
| Power supply | 230 V~/3A | |
| Power consumption | 3 W | |
| Measuring range temp. | +1..+50 °C | |
| Accuracy temperature | ±1 K (typ. at 21 °C) | |
| Measuring range humidity | 0..100 % rH without condensation | |
| Accuracy humidity | ±2% between 10..90% rH (typ. at 21 °C) | |
| Measuring range CO2 | 0..2000 ppm | |
| Accuracy CO2 | ±50 ppm +3% of the measuring value (typ. at 21 °C, 50% rH, 1015 hPa) | |
| Inputs | Terminal 9: NTC10K | Input for external sensor |
| Terminal 12 - ESI | Input digital for floating contact, window contact, dew point sensor | |
| Terminal 13 - OCC | Input digital for floating contact, occupancy sensor, key card switch | |
| Control functions | Setpoint adjustment | +1..+50 °C, (default +16..+30 °C) |
| Display | LCD 102x56 mm, white or black background lighting, LED for TLF threshold indicator (CO2) | |
| Enclosure | ABS, pure white or black | |
| Protection | IP20 according to EN 60529 | |
| Cable entry | Rear entry | |
| Connection electrical | Terminal block max. 1,5 mm² | |
| Ambient condition | -10..+50 °C, max. 95% rH non-condensing | |
| Mounting | Flush mounted with standard EU box (Ø=60 mm, at min 45mm depth) |
Connection Plan
The diagram shows the terminal connections for the Fan Coil controller. Power supply details and Modbus RTU connections are also indicated.
Display Panel
The display panel provides information on the day of the week, time, settings, bus communication, setpoint values, device functions, operating mode, fan stage, and sensor values. It also includes control elements and additional symbols to indicate various statuses such as cooling active, fan active, heating active, automatic mode active, error messages, and warning signs.
Device Configuration
This section details how to configure the device, including accessing the parameter menu, setting passwords, and configuring various parameters such as Modbus address, baud rate, parity, stop bits, temperature offsets, screensaver mode, day/period settings, and factory reset options. It also explains key lock selection and display settings.
Controller Output Signal
The fan coil controller is designed for fan coil units with 2- or 4-pipe systems for heating and cooling. It outputs a proportional control signal (0..10 V) for the manipulated variable. The type of valve used is set via configuration registers. EC-Fan control is also supported via the analog output.
Functional Description
The controller offers various operating modes including Cooling, Auto, Ventilation, and Heating. It supports Standby, ECO-Mode, and ON states. The fan stage can be adjusted automatically based on controller variables. Setpoint adjustment is available within a defined range. The device includes temperature sensor inputs for internal and external sensors, with options for temperature limitation. The 'Auto Fan Control Logic' section describes how fan speed is managed based on heating and cooling demands.
Register Description
This comprehensive table lists all input and holding registers, their addresses, access types (Read/Write), descriptions, and value ranges. It covers parameters like Thermokon model identification, firmware version, fan state, output valve states, external temperature sensor readings, failure status, external inputs, humidity and CO2 sensor values, and various configuration settings for the controller.
Analog Output (AO1) Terminal 11
This section details the function of Analog Output 1 (AO1) on terminal 11. It specifies AO1 functions such as EC-fan, CO2 sensor value, CO2 controller, 6-way valve, and cooling valve control. It also outlines the voltage outputs for heating and cooling, CO2 controller voltage limits, and AO1 controller minimal/maximal values, including Live Zero configuration.
Timer
The timer functionality allows for configuration of clock modes, weekday settings, and automatic summer/winter time adjustments. It supports multiple time channels (A, B, C) with up to four periods each. Each period can be configured with start time, start minute, set point, and ECO mode settings, enabling customized scheduling for heating and cooling operations.
Realtime Clock
This section provides details on configuring the realtime clock, including system year, month, day, hour, minute, and second. It also covers settings for active time channels and making specific days holidays.
Special
This section covers special functions and settings, including active fan speed setting, setpoint temperature, controller modes (Comfort and ECO), HMI mode, active symbols displayed on the LCD, control variable percentage, room temperature display, ASC calibration, and FRC correction value for CO2 measurement adjustment.
Mounting Advice/ Dimensions (MM)
This section provides essential advice for installation and maintenance, emphasizing the importance of disconnecting power before any work. It details how to fix the thermostat base plate to the wall using the provided screw holes and specifies the recommended distances. It also includes a diagram with dimensions for the unit.
