Thermokon JOY SR Fancoil Thermostats

Product Overview

The Thermokon JOY SR series offers advanced electronic fancoil thermostats designed for controlling fan coil units in 2- and 4-pipe systems. These thermostats feature a modern design with a 2.5" LCD display and a touch interface, providing intuitive operation and parameter adjustment. They support up to 3 time channels, each with 4 time segments, allowing for customized comfort schedules. The devices are designed for installation in standard flush-mounted boxes.

Available models include:

• JOY SR Fancoil 5DO RS485 Modbus: For 3-speed fan control, suitable for 2- and 4-pipe systems. Features 3 relay outputs for fan stages.
• JOY SR Fancoil EC AO2DO RS485 Modbus: For EC fan control, suitable for 2- and 4-pipe systems. Includes 2 relays and 1 analog output (0-10V) for heating/cooling valves and EC fan control.
• JOY SR Fancoil EC 3AO RS485 Modbus: For EC fan control, suitable for 2- and 4-pipe systems. Features 3 analog outputs (0-10V) for EC fan, heating/cooling valves, or 6-way valves.

These products are intended for use in building automation systems and transmit sensor data wirelessly via EnOcean. They do not transmit personal data or location data and cannot communicate directly with the internet.

Safety Information

ATTENTION: Installation and mounting of electrical devices must be performed by authorized electricians only. Modifications to the device are prohibited. Devices must not be used for purposes that endanger human health or safety. Ensure power is disconnected before connecting devices.

CAUTION: Risk of electric shock! Internal components may be live. Contact with live parts can cause injury, especially in mains voltage operated devices (90-265 V).

Always adhere to applicable laws, norms, regulations, and the technical state of the art.

Application Notes

Software Updates: Software descriptions and updates are available at thermokon.de.

MicroSD Card: Used for software updates, upgrades, or configuration. Requires FAT file system formatting. NTFS and exFAT are not supported.

Bootloader: Integrated for application updates or configurations. Indicated by a blinking ring light.

Device Configuration: Configuration files can be loaded via MicroSD card. Display parameters, setpoints, and controller settings are adjustable via configuration software.

EnOcean Configuration: EnOcean channels can be configured and managed via the device or Modbus.

Update Function: Software updates are only possible within the same major version number.

Technical Specifications

General

• Measurement Variables: Temperature, Humidity (optional)
• Network Technology: RS485 Modbus RTU
• Radio Technology: EnOcean (IEC 14543-3-10), <10 mW
• Temperature Range: 0..+50 °C
• Temperature Accuracy: ±1 K (typical at 21 °C)
• Humidity Range (optional): 0-100% rH (non-condensing)
• Humidity Accuracy (optional): ±2% (between 10-90% rH, typical at 21 °C)
• Display: 2.5" LCD, 240x160 px, white backlight
• Housing: PC and Glass, optional black or white
• Protection Class: IP30 (according to DIN EN 60529)
• Electrical Connection: Screw terminals (max. 1.5 mm² for Klemmen 1-8, max. 1.0 mm² for Klemmen 9-12)
• Ambient Conditions: 0..+50 °C, max. 85% rH non-condensing
• Weight: 195 g
• Mounting: Flush-mounted in standard Ø60 mm box
• EnOcean Channels: 20 EnOcean transmit/receive channels

Model Specifics

JOY Fancoil 5DO

• Output Switching Contact: 3x normally open contacts (fan stages)
• Voltage Supply: 85..260 V ~
• Power Consumption: max. 2.5 VA (at 260 V ~)
• Inputs: DI1 (for NTC10k or potential-free contact)

JOY Fancoil EC AO2DO

• Output Voltage: 1x 0-10 V (max. 5 mA) for EC fan control
• Output Switching Contact: 2x normally open contacts (heating & cooling)
• Voltage Supply: 85..260 V ~
• Power Consumption: max. 3 VA (at 260 V ~)
• Inputs: DI1 (for NTC10k or potential-free contact), DI2 (digital input for potential-actuated contact, 230 V ~)

JOY Fancoil EC 3AO

• Output Voltage: 3x 0-10 V (max. 5 mA) for EC fan, heating/cooling valves, or 6-way valves
• Voltage Supply: 24 V = (±10%) or 24 V ~ (±10%) SELV
• Power Consumption: max. 2.5 W (at 24 V =)
• Inputs: DI1 (for NTC10k or potential-free contact), DI2 (digital input for potential-actuated contact)

Note on Voltage Supply: When powering multiple bus devices from a single 24V AC supply, ensure all positive (+) and negative (-) voltage supply inputs are connected in phase.

Mounting Instructions

Sensor accuracy is influenced by positioning and mounting. Avoid mounting near drafts, heat sources, direct sunlight, or in niches.

Ensure flush-mounted boxes are sealed. For hollow walls, consider using white flush-mounted boxes (e.g., Kaiser 9063-77) to prevent the support ring from being visible.

Connection Diagrams

Detailed connection diagrams are provided for JOY Fancoil 5DO, EC AO2DO, and EC 3AO models, illustrating terminal assignments for fan stages, heating/cooling outputs, digital inputs, and Modbus communication.

Note: Parallel connection of potential-actuated inputs is not permitted.

Function Description - Controller / Fan Stages

Fan stages are linked to the controller in automatic mode. The assignment of fan stages to heating/cooling modes is configurable. The device allows for a ramp-up time for the fan to ensure safe startup. Time channels and segments define fan control behavior. User overrides are possible via the device interface.

Heating/Cooling Control:

• PI Controller (PWM): For 5DO and EC AO2DO models. Utilizes Xp and Tn parameters for proportional and integral control, outputting a PWM signal.
• 2-Point/3-Point Controller: For 5DO and EC AO2DO models. Features switching hysteresis for heating/cooling control.
• PI Controller (0-10 V): For EC 3AO model. Outputs a 0-10 V signal proportional to the calculated control variable.

EC Fan Control:

• Automatic Mode: Proportional control via 0-10 V signal based on PI controller output.
• Manual Mode: Fan speed is set in steps (up to 5 stages) via configuration software.

User Interface and Operation

The touch interface allows for setpoint and fan stage adjustments. The power button ring provides feedback. Pressing buttons for 3 seconds returns the display to the main screen.

Standby Mode: Disables display and outputs, but frost and heat protection remain active. Modbus registers remain accessible.

Navigation: Use directional buttons to navigate menus. The right button opens submenus, and the up/left buttons exit.

Diagnostic Menu: Accessible by marking the header in the parameter menu and pressing ENTER. Provides information on device type, software version, and I/O status.

Parameter Menu - Modbus Interface

Access the Modbus parameter menu by pressing the 'up' (A) and 'down' (C) buttons simultaneously for at least 5 seconds. The menu is unlocked for the first 60 minutes after power-on, or until the first active Modbus communication. Default password: 2030.

Modbus Settings: Address (1-247), Baud Rate (9600, 19200, 38400, 57600), Parity (None, Odd, Even).

Configuration via uConfig / MicroSD Card / Modbus

The JOY Room Thermostat can be parameterized using the uConfig software. Configuration files created with uConfig can be transferred to the device via SD card. Live configuration is also possible via the BUS interface for BUS devices.

Configuration Software: uConfig requires Windows 10. The installer and necessary plug-ins are available for download from the Thermokon website.

Parameter Menu Structure: Includes Time Channels, Date/Time, Sensor Settings, General Settings, EnOcean List, and EnOcean Configuration.

• Time Channels: 3 channels, each with 4 time segments. Channel 3 has the highest priority. Parameters include time, fan stage, temperature setpoint, and ECO mode.
• Date/Time: Configure time, date, time format (12/24h), and daylight saving time. An internal real-time clock manages time and date automatically.
• Sensor Settings: Adjust offset correction for internal/external temperature sensors and display temperature values. Unit selection (Celsius/Fahrenheit).
• General Settings: Configure LCD/LED brightness, Vent Protection (activates valves periodically to prevent sticking), ECO Dead Zone, language (German/English), and factory reset.
• EnOcean List: Displays learned sensors and actuators with their index, ID, type, and status.
• EnOcean Configuration: Configure radio channels, learn sensors/actuators, and retrieve information. Up to 20 channels can be configured for various functions (receive, transmit, or message server).

SAB Function Overview

The system supports up to 6 SAB (Actuator) channels, with one configurable for a 'Bad' (bathroom) function. Other channels can be used for heating or cooling. A setpoint offset can be configured via Modbus for SAB channels.

Function Profiles:

• SRW/SRG: Window contact and window handle functions.
• VFG: For changeover control.
• EXT/WRF: External temperature sensor input or EnOcean room control unit mapping.
• OCC: Motion sensors for room occupancy detection.
• KEY: Keycard switch function.
• SUP: Master controller overriding internal functions.
• SAB (5+1 BAD): Up to 6 SAB actuators, one with a 'Bad' function.
• OUT: EnOcean temperature controller output.

Inputs

Up to 2 inputs can be configured for various functions:

• Sensor (NTC10K): External temperature sensor input. Can be used for floor heating protection.
• Change-Over DI: Digital input for switching between heating and cooling modes.
• Change-Over Sensor: Automatic switching between heating and cooling based on temperature thresholds (e.g., cooling below 22°C, heating above 25°C).
• Window Contact/Energy Lock: Activates frost/heat protection setpoints.
• Dew Point: Inhibits the cooling controller.
• Presence: Displays presence symbol; adjusts setpoints for 'room unoccupied' state.
• Keycard Switch: Puts the device into energy-saving mode when the card is not inserted. Button operation is locked, display is off.
• Alarm Contact: Displays an alarm symbol in the header, overriding the ECO symbol.

Dimensions

Detailed dimensions are provided in millimeters.

Optional Accessories

Available accessories include flush-mount frames (white/black), decorative frames (white/black), a 2GB MicroSD card, RS485 Biasing Adapter, USB RS485 Modbus RTU Logger, and a USB-RS485 interface with drivers.

Disposal Information

The crossed-out wheeled bin symbol indicates that the product and its removable batteries must not be disposed of with household waste. Users are obligated to dispose of the product separately according to national laws. Contact your supplier or Thermokon Sensortechnik GmbH for proper disposal.