How to install a thermostat in a diesel boiler?

Having a thermostat is essential to save energy and enjoy more pleasant sensations in your home. A simple room thermostat is all you need to get the most out of your home’s heating system.

Heating is one of the elements that consumes the most energy in your home, especially if you live in cold areas. However, much of that consumption can be reduced if you resort to something as simple as a thermostat. This device helps you control the temperature in your home and even has everything you need to work autonomously, if you opt for a smart model.

To take advantage of all these functions, it is enough to know how to connect a thermostat to the boiler and learn how to use it. If you don’t know how to do it, throughout this guide we will give you all the information you need to master this topic.

what is a thermostat

The first thing we need to know is what a thermostat is and how it works. This device has a system that regulates the temperature of the boiler, according to our preferences. To do this, the device includes an ambient thermometer , which measures the temperature of the room in which the thermostat has been installed. Once in operation, the device compares that temperature with the programmed one and maintains continuous monitoring of it.

This process is key when it comes to knowing how a thermostat works. In case the room temperature is above the one we have selected, then the thermostat sends a signal to the boiler, in order to stop its operation. This situation is maintained until the temperature drops below the programmed temperature. When this happens, the thermostat will activate the boiler again and heat the room.

smart thermostats

The process that we have discussed is the one used by conventional thermostats and also by smart ones. However, in these latest products, the operation changes a bit. And it is that these devices incorporate improved technologies and that are responsible for automating the thermal management of your home.

To do this, the thermostat is responsible, for example, to know your habits. According to them, the operation of the boiler is adapted, saving maximum energy and giving you great comfort. Programming functions are also included, with which you can choose when you want the heating to start or when you need it to turn off. Some functions that you can even use from your mobile, in those models that are compatible with this technology.

How to connect a thermostat to the boiler

The process of installing a thermostat in the different types of existing boilers is divided into several steps. It is important that you have the necessary knowledge and tools to do so. If this is not the case, we recommend that you seek professional help, so as not to break anything.

When executing the mount, we have two options. One of them is to resort to a wired thermostat. These models have the inconvenience of having to run a cable from where the boiler is located to the area of ​​your home where you want to control it. A complicated process that involves drilling holes in the walls, making grooves and closing them afterwards. That is why wireless thermostats are used today. These devices do not need wires running through the walls for connection , which simplifies the installation process. This process is exactly what we will see next.

  1. Wiring Installation

The first step in installing a wireless thermostat on a gas or oil boiler is to mount the necessary wiring for the thermostat to work. To do this, we must first work on the connection unit. Once this piece is open, we find two strips, one with the name NLL and the other with ABC . A two-way cable with a plug on the first terminal must be connected to the connection unit. The blue cable is connected to the N socket and the other to the L socket, properly tightening the cables.

In the second strip, the ABC, the control cables of the thermostat are connected. These cables are connected to sockets A and B respectively, so that the signal sent by the other plate correctly reaches the boiler through it. These cables are located inside the body of the boiler (in this link you will find several products to analyze), as indicated in the instructions. Do not forget to properly tighten all the screws, to guarantee the contacts.

  1. Synchronizing the thermostat

The next step is to synchronize the thermostat with the installation that we have just carried out. To do this, we will place batteries in the thermostat and place the device near the boiler, following the corresponding connection procedure. This linking process varies according to the different existing models, so you will have to take a look at the instruction manual of the thermostat in question.

  1. Checking the operation

Once the synchronization process has been executed, it is time to test the operation of the equipment. To do this, we turn on both the thermostat and the connection unit. Activate the manual mode and select a temperature higher than the one in the environment. If the whole process has been done correctly, then the boiler should start working and you will see a green light on the connection unit. If that ignition does not occur, you should check the system, to see what is wrong.

  1. mounting the unit

We finish the process by installing the unit wherever you want. It is important that this area is in the working range of the thermostat. This assembly can be done in desktop mode or on the wall. In the latter case, you should place it at a height of 1.5 to 1.8 meters and in an area away from drafts or direct sunlight, so that the temperature measurements are adequate. With this last step you will have nothing else to do.

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