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Old boiler room equipment
Okay, So I've seen a strange old system, and I'm looking for some explanation. It's from 1951, and has got three of these massive old Birchfield boilers. It's a classic two pipe steam system from that era. This I understand. However, the boilers have old Ray rotary burners. Can anyone explain these things? They look incredibly inefficient. They burn crude oil, (not no.6) and require air atomization. However, the combustion atomizing air is derived from the building's pneumatic controls. (???) that doesn't seem right. Any thoughts?