PNI CT36 Wireless Smart Thermostat

Product Overview

The PNI CT36 is a wireless smart thermostat designed for internet-controlled central heating systems. It offers enhanced comfort and energy efficiency by allowing users to monitor and control their heating remotely via the Tuya Smart mobile application.

The system consists of a central unit with a display and a receiver unit that connects to the heating system. It operates wirelessly using RF communication between units and connects to the internet via Wi-Fi.

Package Contents:

• Central unit with illuminated screen
• Receiver/relay unit
• Wall/table mounting accessories

System Requirements:

• A 2.4 GHz Wi-Fi internet connection is required for remote control via the mobile app.

Central Unit Display and Controls: The central unit features a digital display showing the day of the week, time, current temperature, set temperature, Wi-Fi signal indicator, OWD (Open Window Detection) indicator, heating status icon, and programmed period. Control buttons include Program, On/Off, Set temperature/parameters, and mode selection.

Receiver Unit Controls and Indicators: The receiver unit has an On/Off button, a Pairing button, a Heating On Indicator (LED 1), and a Power Indicator (LED 2).

Important Warnings and Information

Special Warnings

Electrical Safety: As the product connects to a 230V power supply and a heating system, installation must be performed by qualified personnel only. Improper installation can lead to irreversible damage to the product and heating equipment, which is not covered by warranty.

Ease of Use: Both the central unit and the mobile app feature an intuitive and easy-to-configure interface.

Internet Requirement: For remote control via a mobile phone, an internet source (2.4 GHz Wi-Fi router) must be present in the location where the thermostat is installed.

General Information

The PNI CT36 smart thermostat is designed to provide daily comfort in living spaces, offices, or other premises. It allows users to monitor and control heating systems automatically (via schedules) or manually via the internet using the Tuya Smart application (available for Android and iOS).

Mode of Operation and Communication

The TuyaSmart application can be downloaded from the Play Store or App Store. Alternatively, you can scan the QR code provided to download the app.

[QR Code for TuyaSmart app download]

The system operates with a central unit and a receiver unit. The central unit communicates wirelessly with the receiver unit, which in turn controls the heating system. For internet connectivity and remote control, the receiver unit needs to be connected to a 2.4 GHz Wi-Fi network via a router.

Diagram Description: An internet router is shown emitting Wi-Fi signals. These signals connect to the PNI receiver unit. The receiver unit is connected to a boiler. A smartphone is depicted, showing a connection via '3G' and displaying a temperature reading of '20.0', indicating remote monitoring capabilities.

Technical Specifications

First Use Instructions and Warnings

Initial Setup: The system comes with the central unit and receiver pre-paired from the factory. During installation, the receiver unit only needs to be connected to the nearby wireless network.

1. Upon first power-up, the receiver unit's LED 1 will blink slowly, indicating that it needs to be connected to a Wi-Fi router with internet access.
2. Insert 2 AAA alkaline batteries (not included) into the central unit and turn it on by pressing the ON/OFF button. The display will show settings as described previously.
3. Connect the receiver unit to a 230V power source. This should only be done by qualified personnel. Verify correct operation by checking the LED status and using the On/Off button.

Connecting the Thermostat to the Internet via Wi-Fi with the Mobile App

1. Connect your mobile phone to the nearby 2.4 GHz Wi-Fi network. Activate GPS on your smartphone. For a quick setup, ensure your phone, thermostat, and receiver are all within close proximity (1-3 meters).
2. Important Note on Wi-Fi Frequency: Verify that you have a 2.4 GHz Wi-Fi network available and that your phone is connected to it. Many modern routers broadcast both 2.4 GHz and 5 GHz networks. The PNI CT36 thermostat can ONLY connect to the 2.4 GHz network, as it does not support 5 GHz. If you encounter issues, consult a specialist for router configuration.
3. Download the “TuyaSmart” application from the Google Play Store or Apple App Store. Install the app and create a new account by tapping “Sign Up” and following the on-screen instructions.
4. Add the device by tapping the '+' button in the top right corner.
5. Navigate to “All Devices” and select the “Small Home Appliances” category.
6. Find and select “Thermostat” or “Heater” from the list. Follow the on-screen steps. Confirm your Wi-Fi network name and enter the password for the internet network your phone is connected to. If your network is not automatically detected, ensure your GPS location is active and your phone is connected to a 2.4 GHz Wi-Fi network.
7. Press and hold the pairing button on the receiver unit to enter Wi-Fi pairing mode. LED 1 will blink rapidly. (Note: A slow blink indicates it is not yet connected to the internet).
8. On your phone, tap the “Confirm indicator rapidly blink” checkbox.
9. Wait a moment for the connection to complete. LED 1 on the receiver will stop blinking. The connection to the internet via Wi-Fi is now successful.

If LED 1 continues to blink slowly, the connection was not successful. Please try again from step 1.

First Use of the Thermostat

1. With the central unit screen on, adjust the set temperature higher or lower than the current room temperature.
2. Within 90 seconds, the central unit will send the command to the receiver unit. The receiver will confirm by turning LED 1 on/off and emitting an audible 'click', indicating the internal relay has been activated.
3. Access the thermostat via the “TuyaSmart” mobile application (ensure the device appears online after internet configuration). Tap on the device to access its controls. Use the '+' and '-' buttons to adjust the set temperature higher or lower than the current room temperature.
4. Within 90 seconds, the application will send the command via the internet to the receiver unit. The receiver will confirm with LED 1 and an audible 'click'. The temperature displayed on the central unit will update accordingly.

If the temperature adjustment does not occur within 90-180 seconds (2 minutes), re-verify that you have set the temperature higher/lower than the current room temperature and check that the device is online.

Pairing the Central Unit with the Receiver Unit

Perform this procedure only if absolutely necessary, such as if the device appears offline in the app after 10 minutes, the signal icon is missing from the screen, LED 1 on the receiver is off, or the units are not communicating.

1. Press and hold the pairing button on the receiver until LED 1 blinks rapidly.
2. With the central unit screen completely off (press the On/Off button), press and hold the 'M' button on the central unit until a 4-digit code and 3 symbols appear on the screen. Immediately press the "Up arrow" button to initiate pairing.
3. LED 1 will blink slowly. Wait a few moments until LED 1 stops blinking. The signal icon on the central unit display will blink for a few moments and then remain on, confirming successful pairing.
4. Turn the central unit On/Off and test its functionality by setting the temperature higher or lower than the current reading. Observe the receiver unit's relay activation: an audible click and a change in LED 1 status (On or Off).

Delete/Cancel All Pairings

On the receiver unit, press and hold both the pairing button and the On/Off button simultaneously for 5 seconds until LED1 and LED2 light up. Release the buttons.

Once the LEDs turn off, all pairings have been cleared. Proceed with pairing the central unit to the receiver, and then pairing the system to the Wi-Fi network via the mobile app.

Weak or Lost Signal / Malfunction

RF Signal Loss: If the RF signal between the receiver and central unit is lost or disconnected, the signal icon will disappear from the central unit's screen.

Wireless Disconnection: If the receiver unit disconnects from Wi-Fi, LED 1 will blink slowly. Check and replace batteries if necessary.

Troubleshooting Steps:

• Bring the units closer to each other and the receiver unit closer to the Wi-Fi router. Check the device status again.
• If normal operation does not resume within a few minutes and LED 1 continues to blink, clear all existing pairings and re-execute the pairing procedures: first, pair the receiver with the central unit, then pair with the Wi-Fi router using the mobile app.

Set Date and Time

With the central unit screen on, press and hold the 'M' button for 5-6 seconds until the hour display starts blinking.

1. The hour '00:00' will be highlighted. Set the minutes using the Up and Down buttons.
2. Press the 'M' button again to proceed.
3. Set the hour using the Up and Down buttons.
4. Press the 'M' button again to proceed.
5. Select the day of the week using the Up and Down buttons.
6. Press the 'M' button to confirm.
7. Save the settings by pressing the ON/OFF button or wait approximately 15 seconds for the settings to be saved automatically.

Open Window Detection Function

When the "Open Window Detection" (OWD) mode is activated in the advanced settings, the system will automatically stop heating if a sudden temperature drop is detected (default setting: 2°C decrease within 15 minutes). This function is useful for ventilation purposes when a door or window is opened.

The system will return to its previous operating mode after 30 minutes, and the "OP" icon will disappear from the screen. Any button press during this 30-minute period will cancel the OWD function and return the system to its previous operating mode.

Other Functions Available in the App

The “TuyaSmart” application provides access to the following functions:

• Display of measured and programmed/desired temperatures.
• Heating Status Display: Shows "Heating" when the heating is active.
• Operating Modes: Manual, Eco (economic), and Automatic (based on daily schedule).
• Key Lock: Activates a "Child Lock" feature to prevent accidental button presses on the thermostat.
• Daily Programming: Set schedules for 7 days a week with up to 4 time periods per day.
• Timed Programming: Set specific timed heating events.

Daily Program Configuration

This configuration can be performed either through the mobile application or directly on the thermostat. To access programming settings on the thermostat, press and hold the 'P' button for 6-7 seconds.

The days of the week are fixed from Monday (1) to Sunday (7), with each day having 4 programmable time periods (1-4). Each press of the 'P' button advances to the next setting.

1. Press and hold 'P' for 3 seconds. The "time" display will blink. Adjust the value using the '+' and '-' buttons.
2. Press the 'P' button. The temperature display will blink. Adjust the desired temperature using the '+' and '-' buttons.
3. Press the 'P' button to move to the next time period.
4. Repeat this process similarly for other days and time periods.

Example Daily Schedule:

Advanced Parameter Settings

To access advanced settings, turn off the thermostat completely (screen off). Then, press and hold the 'M' and 'Up arrow' buttons simultaneously. Use the 'M' button to navigate through the menu and the Up/Down arrows to adjust values. Press the ON/OFF button to exit the menu after making changes.

Software Version: 5055-02

Connection Diagrams and Boiler Compatibility

Receiver Unit Connection Diagram

Connecting the receiver unit to a 230V power supply and a central heating boiler must be performed by qualified personnel. Consult the thermostat and boiler documentation beforehand.

The receiver unit features a relay with NO (Normally Open) and NC (Normally Closed) contacts, which are potential-free (unpowered). These contacts can close a command circuit with a maximum current of 10A and a maximum voltage of 250V AC/DC.

Diagram Description: A basic electrical diagram shows a 230V AC power source with Live (L) and Neutral (N) connections. These connect to the receiver unit's power input. The relay outputs are labeled NC, NO, and COM (Common), ready to be wired into the boiler's thermostat circuit.

Connection Examples with Central Heating Boilers - PNI CT36

Important: Installation must be carried out exclusively by an authorized installer, after consulting the manuals and verifying connections and compatibility.

1. Ariston CLAS EVO SYSTEM

Diagram Description: Shows the Ariston CLAS EVO SYSTEM boiler with its thermostat connection terminals labeled TA1. The PNI CT35 receiver unit's NC, NO, and COM terminals are shown connected to the corresponding terminals on the Ariston boiler.

2. Ferroli DivaCondens 24/28

Diagram Description: Depicts the Ferroli DivaCondens F24/28 boiler. The thermostat connection terminals are labeled (e.g., X2, X4, X7). The PNI CT35 receiver unit's NC, NO, and COM terminals are shown wired to the appropriate thermostat connection points on the Ferroli boiler.

3. Vaillant Ecotec Pure

Diagram Description: Illustrates the Vaillant Ecotec Pure boiler with its thermostat connection terminals labeled eBUS, X106, and X41. The PNI CT35 receiver unit's NC, NO, and COM terminals are shown connected to these terminals on the Vaillant boiler.

4. Motan Max Optimus

Diagram Description: Shows the Motan Max Optimus boiler with its thermostat connection terminal labeled TA. The PNI CT35 receiver unit's NC, NO, and COM terminals are shown wired to the TA terminal on the Motan Max Optimus boiler.

Product Installation and Dimensions

The central unit can be mounted in two ways:

1. Tabletop Mounting

Place the central unit on a table or flat surface using the included stand.

Diagram Description: Shows the central unit placed on a flat surface with a stand attached to its back, allowing it to be propped up.

2. Wall Mounting

Attach the included bracket to the wall and then mount the central unit onto the bracket.

Diagram Description: Illustrates the mounting bracket being attached to a wall, and then the central unit being clipped or screwed onto the bracket.

Dimensions

The central unit has the following approximate dimensions:

• Width: 135 mm
• Height: 88 mm
• Depth: 22 mm

Diagram Description: A technical drawing of the central unit shows its dimensions. It also includes detail views of the mounting bracket and how the unit attaches to it.

EU Declaration of Conformity

SC ONLINESHOP SRL declares that the PNI CT36 Smart Thermostat complies with the following EU directives:

• EMC Directive 2014/30/EU
• RED Directive 2014/53/UE
• LVD Directive 2014/35/EU

The full text of the EU Declaration of Conformity is available at the following internet address:

https://www.mypni.eu/products/7068/download/certifications

This declaration is provided in multiple languages, including Bulgarian (BG), English (EN), German (DE), Spanish (ES), French (FR), Hungarian (HU), Italian (IT), Dutch (NL), Polish (PL), and Romanian (RO).