Installing a Thermostat on an Oil Boiler

Is installing a thermostat on the circulator the solution?

The room thermostat allows for regulating heating in the home. When the home is heated by an oil boiler, installing a room thermostat can be complicated.
Sometimes, there is talk of installing a thermostat on the boiler pump or burner. This method does allow for regulating heating, but it prevents the sanitary water from reaching the necessary temperature for dishes and showers at the aquastat level. Therefore, there is a malfunction that leads to water that is too cold, never reaching the dew point (55°C).
The boiler is not designed to operate at low temperatures. The heat exchanger is at significant risk of being damaged by excessively cold returns, even if there are thermostatic valves on the radiators.
Thus, connecting the thermostat to the circulator to modulate the heat flowing to the radiators and returning to the boiler is a detrimental solution that ultimately proves to be uncomfortable.

How to know if my oil boiler can use a thermostat?

Not all oil boilers can operate with a room thermostat. Depending on the year of manufacture of the boiler or the model of the oil boiler, the manufacturer may not offer the option to add thermal regulation.
Before opting for an ineffective and potentially damaging solution for the boiler or oil burner, it is important to check the electrical diagram of the boiler in the technical manual.
If your oil boiler model is no longer available, it is still possible to obtain the technical manual for your heating equipment from the manufacturer.
Once you have that, there should be a section dedicated to the thermostat connection or the electrical connection that mentions it. If not, you can still contact the brand or a heating technician to find a solution specifically for your boiler.