Open your boiler to get access to its control unit
Access the boiler control by opening the boiler. Since every boiler has a different opening method, take a look at our examples below to get an idea how your boiler can be
opened. All wiring connection terminals are found on the control unit. You will be looking for the place where lots of wires connect to the boiler. Look for the terminal where a room
thermostat can be connected. The installation manual of your boiler very often helps.
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