User Manual for JUNG Room thermostat RTR230

Quick guide from the manual

The JUNG RTR230 is an electronic room temperature controller designed for 230V electrothermal valve drives. Important: Installation and electrical connection must only be performed by electrically skilled persons. Always disconnect the power supply before working on the device to prevent electric shock. The device requires a calibration period of approximately 90 minutes after the initial power-on, during which control deviations may occur.

Device components

The thermostat consists of the following parts:

• Room temperature controller insert
• Frame
• Central plate
• Control knob
• Internal temperature sensor
• Adjustment rings for temperature limits

During renovation, ensure the internal temperature sensor is not painted over or covered in dirt.

Installation and wiring

The device is designed for mounting in an appliance box compliant with DIN 49073. For optimal performance, follow these guidelines:

• Recommended height: 1.50 m on interior walls.
• Avoid interference: Do not mount near heat sources (ovens, refrigerators), draughts (near doors), or in direct sunlight.
• Placement: Do not install behind curtains, shelf walls, or in multiple combinations with heat-generating devices like dimmers.
• Wiring: Connect the electrothermal valve drive to the insert according to the provided connection diagram. Ensure terminals are at the bottom when fitting the device.

Operation

The room temperature is adjusted manually using the control knob. Turning the knob to the right or left changes the setpoint temperature. The middle position corresponds to approximately 20 °C. The adjustable range is between 5 °C and 30 °C.

Setting temperature limits

You can restrict the temperature setting range using the adjustment rings located on the central plate:

1. Pull the control knob off the central plate (by hand or using a suitable tool).
2. Turn the large blue adjustment ring clockwise to set the desired minimum temperature (each notch is approx. 1 °C).
3. Turn the small red adjustment ring anticlockwise to set the desired maximum temperature.
4. Replace the control knob, ensuring the coding on the knob and rotary axle aligns.

Technical data

The device operates on AC 230 V with a mains frequency of 50/60 Hz. It supports 1 to 10 valve drives with a connected load of up to 20 W. The ambient operating temperature range is -5 °C to +45 °C. The device features a valve protection function that opens and closes the valve once a week.