How does the heating in the Drying rooms work?

The drying rooms have a retractive switch adjacent to the door which works as a heating boost override. 

Once the retractive switch is triggered the heating will activate for a 2-hour time period. After the 2-hour time period the heating will de-activate automatically.

If the heating boost override is not active the heating is controlled automatically and is programmed to maintain 19oC (±1oC hysteresis).