The boiler heating system was not too complicated and essentially just involved boiling the water and distributing the heat through pipes and radiators into the rooms. The heat could be carried by water or steam, and Roland preferred the latter because it had a higher temperature and was more convenient. As long as the boiler kept on running, the steam pressure would fill the pipes with hot water droplets without the help of a pump.
Of course, there were also shortcomings to a steam heating system. The pipes were always under very high pressure, so weak infrastructure could cause leakages or even explosions. The steam would reach temperatures of 200 to 300 degrees Celsius, making it extremely damaging to human flesh and thus raising the safety standards for the steam heating system. Anna's Blackfire welding technique, combined with Soraya’s coating, guaranteed system integrity and reduced these risks to a minimum.
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