PNi CT36PRO Smart Thermostat Instruction Manual

PNi CT36PRO Smart Thermostat

Specifications

• Model: PNI CT36 PRO
• Central Unit Power Supply: 2 AAA 1.5V alkaline batteries
• Receiver Unit Power Supply: 230VAC 50/60Hz
• Memory: EEPROM
• Receiver Unit Control Type: NO (normally open)/NC (normally closed) relay without potential (not energized)
• Relay Operating Parameters: Max. 250 V, max. 10A (resistive), Current AC/DC
• Set Temperature Range: Celsius degrees
• Measured Temperature Range: Not specified
• Hysteresis: Not specified
• Temperature Measuring Unit: Celsius degrees
• Operating Humidity: Max. 85% no condensation
• WiFi Frequency: 2.4GHz
• WiFi Transmission Power: 100mW
• RF Frequency: 868MHz
• RF Transmission Power: Not specified

Special warnings

• Since this thermostat must be connected to a 230V network and to heating equipment, the installation must only be performed by qualified personnel.
• Also, we recommend that the initial configuration of the thermostat be performed only by qualified personnel able to implement the technical procedures detailed in this manual.
• To control the thermostat remotely from the mobile phone, it is necessary to connect the thermostat to a 2.4 GHz wireless network. The thermostat does not support 5GHz networks.
• The thermostat is compatible with all boilers equipped with an input for thermostats with a potential-free NO relay.

Technical specifications

Receiver unit control type

| NO (normally open)/NC (normally closed) relay without potential (not energized)
---|---
Relay operating parameters| Max. 250 V, max. 10A (resistive), Current AC/DC
Set temperature range| 5 – 35°C, step 0.5°C
Measured temperature range| 0 – 50°C, step 0.1°C
Hysteresis| 0.1°C
Temperature measuring unit| Celsius degrees
Operating humidity| Max. 85% no condensation
WiFi frequency| 2.4 GHz
WiFi transmission power| 100mW
RF frequency| 868 MHz
RF transmission power| <25mW

The main unit

1

| Day of the week 1 (Monday) – 7 (Sunday)|

10

|

Wireless signal indicator

---|---|---|---
2| Clock| 11| Cooling system is On
3| The set temperature| 12| Heating system is On
4| Active heating mode| 13| The room temperature
5| Active cooling mode| 14| Active program number

6

|

Eco mode active

|

15

| Eco, Manual, Programmed mode selection
---|---|---|---
7| Manual mode active| 16| Heating, Cooling mode selection
8| Programmed mode active| 17| Thermostat On/Off

9

|

Battery indicator

|

18

| Up and Down arrow for setting temperature and parameters

The receiver unit

Instruction

Instructions and warnings for the first use
Note: The system comes with the two units paired from the factory. During installation, it is only necessary to connect the receiver unit to the wireless router in the house.

• Insert 2 AAA alkaline batteries (not included) into the central unit and turn on the unit by pressing the on/off button.
• On the screen of the central unit, the network indicator blinks, to indicate that the thermostat is not connected to the Internet.
• Connect the receiver unit to a 230V power supply (the operation must be performed by qualified personnel only).
• Make sure the thermostat is working properly by turning the two units on/off and checking the status of the LEDs.

The Tuya Smart app

Note 1: Due to the numerous updates of the Tuya Smart application, the images and information described in this manual may be different from the version you have installed.
Note 2: For a quick configuration, make sure that the phone and the thermostat are as close as possible to each other (1-3 m).

1. Connect the mobile phone to a 2.4 GHz wireless network and activate the GPS location on your phone.
   Warning: Make sure that you have connected the phone to the wireless network on the 2.4 GHz frequency. New generation routers and phones are also equipped with the 5 GHz wireless network, but the PNI thermostat does not support this frequency.

2. Download the Tuya Smart application from the App Store or Google Play or scan the QR code below:

3. Open the Tuya Smart application and press the + button or “Add device” to add the thermostat to the application.

4. In the following interface, select the “Small Home Appliances” – “Thermostat (Wi-Fi)” option.

5. Select the WiFi network and add the network password.

6. Long press the pairing button on the receiver unit until the “Heating on” LED blinks quickly.

7. In the application, press “Next” and confirm that the LED indicator on the product blinks quickly.

8. The application will start scanning nearby devices.

9. After your thermostat has been identified, press “Done” to complete the procedure.

10. The LED on the receiver will stop blinking. At this moment, the wireless internet connection is successful. If the LED continues to blink slowly, the connection failed, repeat the procedure.

Functions available in the application
The following functions are available in the Tuya Smart application:

• Display the set temperature and the measured temperature.
  • Heating/cooling status: the icon appears when the heating system is on and the icon when the cooling system is on.
  • Operation mode selection: Manual, Eco and Programmed

Advanced settings

For the two operation modes, Heat and Cold, the following settings are available: Daily program setting (maximum 4 periods), Child protection (Keypad lock), Anti-freeze protection, Open window protection, Temperature calibration, Setting Dead Zone (Hysteresis), Temperature report.

Temperature control from the thermostat
Press the Up and Down keys on the central unit to set the desired temperature.

Heating mode:

• If the set temperature (SET) is higher than the temperature in the room (ROOM), the central unit will send a command to the receiver unit in a maximum of 90 seconds. The “Heating on” LED on the receiver unit will light up and a click will be heard indicating the activation of the internal relay. The icon (the heating system is on) appears on the screen of the central unit.
• If the set temperature (SET) is lower than the temperature in the room (ROOM), the central unit will send a command to the receiver unit in a maximum of 90 seconds. The “Heating on” LED on the receiver unit will go out and a click will be heard indicating the activation of the internal relay. The icon disappears from the screen.

Cooling mode:

• If the set temperature (SET) is lower than the temperature in the room (ROOM), the central unit will send a command to the receiver unit in a maximum of 90 seconds. The “Heating on” LED on the receiver unit will light up and a click will be heard indicating the activation of the internal relay. The icon (the cooling system is on) appears on the screen of the central unit.
• If the set temperature (SET) is higher than the temperature in the room (ROOM), the central unit will send a command to the receiver unit in a maximum of 90 seconds. The “Heating on” LED on the receiver unit will go out and a click will be heard indicating the activation of the internal relay. The icon disappears from the screen.

Temperature control from the Tuya Smart application

1. Open the Tuya Smart application and in the list of devices added to the application, click on the thermostat.
2. From the settings menu, select the cooling (Cold) or heating (Heat) mode.
3. In the thermostat control interface, press the “-” and “+” buttons to set the desired temperature.
4. In a maximum of 90 seconds, the application sends the command via the Internet to the receiver unit, which is confirmed by turning on/off the “Heating on” LED and audibly with a click, which means the activation of the internal relay. In a short time, the temperature (SET) displayed on the screen of the central unit will also be updated.

Note: If the temperature on the screen of the central unit does not update within a maximum of 2 minutes, check again in the application the status of the thermostat (Online or Offline) and the set temperature.
Pairing the two units

Warning : The two units come paired from the factory. Perform this procedure only if necessary.
If the thermostat appears Offline in the application, the signal icon is missing from the screen, the “Heating on” LED on the receiver unit is off and the units do not communicate with each other, perform the pairing procedure below:

1. Long press the pairing button on the receiver unit until the “Heating on” LED flashes rapidly.
2. Turn off the screen of the central unit by pressing the on/off button.
3. When the screen is off, press and hold the M button on the central unit until a 4-digit code appears on the screen.
4. Immediately press the up arrow button to pair with the receiver unit.
5. The “Heating on” LED blinks rarely and then goes out.
6. The icon blinks for a few seconds, after which it remains on the screen, confirming that the pairing is complete.
7. Test the functionality by changing the set temperature (SET) and watch the triggering of the relay in the receiver unit.

Delete pairing

1. Turn off the receiver unit by briefly pressing the on/off button. The two LEDs will turn off.
2. With the receiver off, press and hold the pairing and on/off buttons at the same time until the two LEDs light up at once. Release the buttons.
3. The “Power” LED stays lit, and the “Heating on” LED flashes rarely.
4. The icon disappears from the screen of the central unit.

Warning: first pair the two units and then add the thermostat to the Tuya Smart application.

Lost or weak signal
In case of RF signal loss between the receiver unit and the central unit, the icon will disappear from the screen.

If the receiver unit is disconnected from the wireless, the “Heating on” LED will blink rarely.

Recommendations:

• Change the batteries of the central unit if necessary.
• Bring the units closer to each other and the receiver unit to the WiFi router and check the status of the devices again.
• If in a few minutes the operation does not return to normal and the “Heating on” LED continues to blink rarely, delete and perform the pairing procedures again: first of the central unit with the receiver unit and then the pairing with the wireless router (through the application mobile).

Set the time and the day of the week

1. With the screen on, long press the M button for 5-6 seconds. Only the time remains displayed on the screen, and the minute indicator flashes.
2. Press the Up and Down keys until you reach the desired value. Press the M key to confirm.
3. The hour indicator blinks. Press the Up and Down keys until you reach the desired value. Press the M key to confirm.
4. The indicator corresponding to the day of the week, 1 (Monday) – 7 (Sunday) will flash. Press the Up and Down keys until you reach the desired value. Press the M key to confirm.
5. The screen returns to normal display mode.

Open window detection

• When the open window detection function is activated by the application, the system will automatically stop the heating if a sudden drop in temperature is registered (2°C in 15 minutes by default). The “open window” icon appears on the screen, and the set temperature (SET) becomes 5°C.
• This function is useful when opening a window (for ventilation, for example) without stopping the heating.
• The thermostat will return to the previous operating mode after 30 minutes, and the “open window” icon will disappear from the screen.
• Any other button pressed within 30 minutes will stop the function, bringing the system to the previous mode of operation.

Daily program configuration via the thermostat
Note: The configuration of the daily program can also be done through the Tuya Smart application, the procedure that, for ease of execution, we recommend.
With the screen on, long press the P button (6-7 seconds) to enter the PROGRAM settings. The days of the week are marked from 1 (Monday) to 7 (Sunday). Each day has 4 time periods (1 ~ 4). Each press of the P button leads to the next setting.

1. Long press the P button. The minute indicator flashes. Change the value using the Up and Down buttons.
2. Press the P button. The hour indicator flashes. Change the value using the Up and Down buttons.
3. Press the P button. The indicator for the set temperature (SET) flashes. Change the value using the Up and Down buttons.
4. Press the P button for the next period.
5. Repeat the steps for the other days and periods.

Example of temperature programming for days:

Advanced settings

1. Turn off the central unit by pressing the on/off button.
2. With the screen off, press and hold the M and Up buttons simultaneously.
3. Press the M button to navigate through the menu and the Up and Down arrows to change the Options.
4. Press the on/off button to exit the menu.

01

| Internal sensor temperature calibration| -8°C ~ 8°C (step

0.1°C)

|

0°C

02| Setting the maximum set temperature limit| 5°C ~ 35°C| 35°C
03| Setting the minimum set temperature limit| 5°C ~ 35°C| 5°C
05| Frost protection temperature| 5°C ~ 15°C| 5°C
09| Hysteresis (Deadzone)| 0.1°C ~ 6°C

(step 0.1°C)

| 0.1°C

11

|

Key lock function

| 1: On

(Long press the M key for 5 seconds to

unlock the keys)

0: Off

|

0

12| Open window

detection – OWD

| On

Off

| 0
---|---|---|---
13| OWD – Detection

time

| 2 ~ 30 minutes| 15 minutes

14

| OWD – Temperature drop (during

detection)

|

2,3,4 °C

|

2°C

15

| OWD – Time Delay (return to previous setting/program)|

10 ~ 60 minutes

|

30 minutes

17

|

Return to factory settings

| 0: No

1: Yes

Long press the on/off button for 5 seconds until the thermostat restarts.

|

0

| Software version| 5055-02|

Receiver unit connection diagram
Warning: Connecting the receiver unit to a 230 V power supply and to a heating plant is performed only by qualified personnel and only after consulting the documentation of the thermostat and the heating plant.
The receiver unit has a relay-type command, NO (Normal Open) and NC (Normal Closed) without potential (not energized) that closes a control circuit with a maximum current of 10 A and a maximum voltage of 250 V AC / DC.
You can find examples of connections with certain models of thermal power plants at the end of the manual.

WIRING

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EU Simplified Declaration of Conformity

• ONLINESHOP SRL declares that Smart thermostat PNI CT36 PRO complies with the Directive EMC 2014/30/EU, RED 2014/53/UE, and
• ROHS 2011/65/EU. The full text of the EU Declaration of Conformity is available at the following Internet address: https://www.mypni.eu/products/9357/download/certifications

FAQ

Frequently Asked Questions

• Q: What is the maximum range for WiFi transmission?
  • A: The WiFi transmission range is up to 100 meters under ideal conditions.
• Q: Can the unit be used in high-humidity environments?
  • A: The unit can operate in environments with humidity levels up to 85% as long as there is no condensation present.

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