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  Where is the boiler room in your school? Ask the school caretaker or janitor if you don't know. Never go into a boiler house without permission.

Thermostatic radiator valve
The heating system has various controls. Which ones do yours have? These switch individual radiators on and off depending on the temperature in the vicinity.
This device measures the temperature of the room and sends this information to the central controller. There may be other thermostats outside the building and connected to the heating system.
The controller receives information from a number of devices, such as thermostats and a clock, and decides whether the boiler should be switched on or off to keep the school comfortable.

Don't alter heating controls without permission.
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