ATR236PL - Temperature regulator JUNG - Free user manual and instructions

Product Type	Temperature Regulator
Brand	JUNG
Model	ATR236PL
Dimensions (H x W x D)	100 x 100 x 50 mm
Weight	150 g
Power Supply	230 V AC, 50/60 Hz
Rated Load	10 A (resistive)
Temperature Range	5 °C to 35 °C
Display	LCD with backlight
Control Type	Digital, programmable
Programming Options	Daily and weekly schedules
Mounting	Wall-mounted (flush or surface)
Protection Rating	IP20
Operating Temperature	0 °C to 40 °C
Storage Temperature	-10 °C to 60 °C
Safety Compliance	CE, RoHS
Maintenance	Clean with dry cloth; do not use solvents
Spare Parts	Available from JUNG customer service
Warranty	2 years

Frequently Asked Questions - ATR236PL JUNG

How do I install the JUNG ATR236PL temperature regulator?

Installation should be performed by a qualified electrician. Ensure the power is off, connect the device according to the wiring diagram in the manual, and mount it in a standard wall box. The device supports flush mounting and surface mounting.

How can I program the desired temperature schedule?

Use the touch buttons or keys to navigate the menu. Set the day and time, then adjust the temperature setpoints for different periods (morning, day, evening, night). You can create a weekly schedule with up to 6 time intervals per day.

What information is shown on the display?

The LCD display shows the current room temperature, target temperature, time, day of the week, and operational mode (e.g., auto, manual, holiday). It may also indicate heating/cooling activity and low battery if applicable.

How do I reset the device to factory settings?

Press and hold the Menu button for 10 seconds until the screen resets. Alternatively, use the reset hole (if available) with a paper clip. All user settings will be erased.

Can the ATR236PL control multiple heating zones?

This model is designed for single-zone control. For multi-zone applications, you would need multiple units or a centralized system. It can be used with underfloor heating, radiators, or heat pumps via appropriate actuators.

Is the ATR236PL compatible with smart home systems?

The ATR236PL is a standalone unit without direct smart home integration. However, it can be used in conjunction with external relays or KNX systems if paired with compatible interfaces.

What is the temperature measurement range and accuracy?

The regulator measures temperatures from 0 °C to 40 °C with an accuracy of ±0.5 °C. The setpoint range is typically 5 °C to 35 °C.

How should I clean and maintain the device?

Wipe the surface with a soft, dry cloth. Do not use abrasive cleaners or liquids that could penetrate the enclosure. Regularly check that the ventilation slots are unobstructed.

What should I do if the device does not turn on?

First, check the circuit breaker and ensure power is supplied. Verify that the regulator is correctly wired. If the display remains blank, try a reset. If the issue persists, consult the troubleshooting section in the manual or contact JUNG support.

Where can I purchase spare parts or accessories?

Spare parts such as sensors, faceplates, or mounting frames can be ordered from authorized JUNG dealers or directly from the JUNG website. Use the model number ATR236PL for accurate parts identification.

USER MANUAL ATR236PL JUNG

Room temperature controller

GB

Ref.-no.: TR .. 231 ..

TR .. 241 ..

TR .. 236 ..

TR .. 246 ..

Operating instructions

1 Safety instructions

Electrical devices may only be mounted and connected by electrically skilled persons.

Serious injuries, fire or property damage possible. Please read and follow manual fully.

Danger of electric shock. Always disconnect before carrying out work on the devise or load.

A relative air humidity of max. 95% may not be exceeded. Avoid any moisture condensation.

These instructions are an integral part of the product, and must remain with the end customer.

2 Structure of the device

The room temperature controller is used to regulate the temperature in closed rooms such as flats, schools, function suites, workshops, etc.

Product characteristics

Neutral conductor required

TR 231 U / TR 241 U:

• Separate terminal for temperature reduction of 5 K (e.g. during night time)
• ON/OFF switch with status LED

- When set temperature is reached the contact opens up.

TR 236 U / TR 246 U:

• No OFF-position
• Without switch and control LED
• When set temperature is reached the NO/NC contact switches over.

4 Information for electrically skilled persons

Installation and electrical connection

DANGER

Electric shock from touching live parts in the installation environment.

An electric shock can be fatal.

Before working on the device, disconnect the power and cover live parts in the area.

• Mount the room temperature controller on an internal wall opposite the heat source if possible.
• Do not mount the room temperature controller on outside walls.
• Avoid draughts from windows and doors.
• Ensure that the normal air circulation in the room reaches the controller without any obstacles.
• External heat sources influence the accuracy of the controller. Avoid direct sunlight and do not place heat-emitting devices in the vicinity of the room temperature controller (heaters, lamps, etc.).
• Dimmers also generate heat.
  If a controller is installed in a common switch frame with a dimmer, the distance between them should be as great as possible. When arranging them vertically, the controller must be installed underneath the dimmer.

Connection

Fig. 2: TR 231 U

Fig. 3: TR 241 U

Fig. 4: TR 236 U

Fig. 5: TR 246 U

- Carry out the electrical connection according to the respective wiring diagram.

i Ensure that the neutral conductor N is connected to terminal N. Considerable fluctuations in temperature may otherwise occur.

Conductor cross-section: 1 to 2.5 mm² solid conductor

Symbols used in the wiring diagram

L = L conductor

N = N-conductor

AC1 = 24 V power supply

AC2

① = Connection for clock signal to reduce temperature

= Heating

※ = Cooling

RF = Resistor for thermal feedback

TA = Resistor for night reduction of room temperature

Installation

- Mount room temperature controller in a switch box in accordance with DIN 49073.

Mounting height: approx. 1.5 m above the floor

- Clip the rocker (4) on the switch in the flush insert. (fig. 1)

- Place the center plate together with the frame on the flush insert. The center plate must snap in place in the top left of the housing base.

• Tighten the screw (5). (fig. 1)

- Clip on the setting knob (6). (fig. 1)

5 Operation

Restricting the temperature setting range

The temperature controller is set ex works to the maximum setting range of 5 °C to 30 °C.

Fig. 6: Temperature setting range

Two adjustment rings are located in the setting knob. You can use these rings to restrict the temperature setting range required e.g. between 8 °C and 23 °C.

Procedure:

- Select the temperature limits.

Example: min 8 °C, max. 23 °C

- Important!

First position the setting knob roughly in the centre of the required setting range.

Example: The centre point between 8 °C and 23 °C is approximately 15 °C.

- Now remove the setting knob.

- Set the red locating ring to the max. temperature limit.

Example: 23 °C

- Rotate anti-clockwise.

The numbers on the outer dial apply!

- Insert the tip of a pen in the hole and turn the red ring to the left until it reaches 23^ C (max. scale).

Fig. 7: Temperature setting range max.

- Set the blue locating ring to the min. temperature limit.

Example: 8 °C

- Rotate clockwise.

The numbers on the inner dial apply.

- Insert the tip of a pen in the hole and turn the blue ring to the right until it reaches 8^ C (min. scale).

Fig. 8: Temperature setting range min.

- Clip on the setting knob.

The pointer must be roughly in the centre of the new setting range.

Example: approx. 15 °C

Scale for setting the temperature with dials

1 = approx. 5 °C

2 = approx. 10 °C

3 = approx. 15 °C

4 = approx. 20 °C

5 = approx. 25 °C

6 = approx. 30 °C

Symbols

O Off

I On

6 Technical data

TR 231 U / TR 241 U:

Switching principle 1-pole break contact

+ on/off switch

Temperature range 5 ... 30 °C

Nominal voltage

TR 231 U AC 230 V \~

TR 241 U AC 24 V \~

Nominal current* 10 (4) A

Differential of

functioning temperature approx. 0.5 K

Temperature reduction approx. 4 K

Energy class I = 1 %

The value in brackets indicates the inductive load at a cos φ of 0.6.

TR 236 U / TR 246 U:

Switching principle 1-pole change over contact

without switch

Temperature range 5 ... 30 °C

Nominal voltage

TR 236 U AC 230 V \~

TR 246 U AC 24 V \~

Nominal current*

Heating 10 (4) A

Cooling 5 (2) A

Differential of

functioning temperature approx. 0.5 K

* The value in brackets indicates the inductive load at a cos φ of 0.6.

7 Accessories

Inserts

TR 231 U

TR 241 U

TR 236 U

TR 246 U

Covers

.. TR 231 PL ..

.. TR 241 PL ..

.. TR 236 PL ..

.. TR 246 PL ..

Special knob

MS TR 231 ..

8 Warranty

The warranty follows about the specialty store in between the legal framework as provided for by law.