How to Connect a Wireless Thermostat to Your Boiler – A Simple Guide by E-Top Controls

Upgrading to a wireless thermostat is a smart way to improve your home’s heating efficiency and reduce energy bills. But how exactly do you connect it to your boiler? 

1. Check Compatibility

Before installation, ensure your boiler supports wireless thermostat connectivity, and choose the correct thermostat for your boiler.

There are mainly two type outputs: on/off control or openthem control.

E-Top Controls offers a wide range of universal wireless thermostats with on/off output control.

You can check OEM/ODM Room Thermostat,Smart Wifi Thermostat,Heating Thermostat Manufacturer  

For opentherm output thermostat, E-Top controls also have some choices.  

OEM/ODM Room Thermostat,Smart Wifi Thermostat,Heating Thermostat Manufacturer

2. Install the Receiver  

- Install reicever beside the receiver, and power receiver with 230Vac.

- Follow the manufacturer’s wiring diagram, connect receiver to boiler.

On/off output:

Opentherm output:

3. Pair the Thermostat with the Receiver

- Power on both the thermostat and receiver.  

- Follow the pairing instructions (E-Top wireless thermostats are paired in factory before delivery, user can skip this step).  

- Once connected, test the system by adjusting the set temperature higher than room temperature, when the heating on LED on receiver is on, it means system working.  

4. Optimize Your Settings

- Set schedules to match your daily routine (e.g., lower temps at night).  

- Use smart features like Alexa or Google assistant to save energy when you’re away.  

As a trusted thermostat factory, E-Top controls specialize in:  

✅  High-quality, reliable wireless thermostats for boilers.  

✅  Custom OEM/ODM solutions—tailored for HVAC brands and distributors.  

✅  Energy-efficient designs that comply with EU regulations.  

If you are looking for smart thermostat solutions, E-Top Controls delivers cutting-edge technology with seamless integration.