How do you adjust bolier pressure?

To adjust boiler pressure, first identify the boiler's pressure gauge and check the current pressure level. If the pressure is too low, you can add water to the system using the filling loop or valve, ensuring to follow the manufacturer's instructions. For high pressure, you may need to bleed radiators to release excess pressure or consult a professional if it exceeds safe limits. Always ensure the boiler is turned off and cool before making adjustments for safety.