This chart from Shaw-Perkins Radiators shows the various outputs in Btu/hr per square foot E.D.R. that you'll get at various steam pressures (including vacuum systems). Thanks to Patrick Linhardt for scanning and sharing this with us.
This document contains the complete illustrated instructions for installing the Hercules Steam and Hot Water Heating System, a boiler manufactured by Sears, Roebuck and C...
This document contains the manufacturer's instructions for the HB Smith Series M450L Mills Water-Tube Boiler for automatic firing with oil or gas (Steam, Vapor, or Water ...
This document contains the jacket assembly instructions for the HB Smith Series 45 Mills Boiler (circa 1979).