The Mouat Vapor System was one of the classics of vapor heating! Here is an excerpt from The Heating and Ventilating Magazine explaining how this system works. And you'll find the Mouat Vapor Heating Co. circa-1926 catalog here.
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).