Perfex Series 155 Magic Dial Thermostat
Here are photos of a circa-1944 Perfex Series 155 Magic Dial Thermostat, as well as the instruction manual.
Radiator Output Based on Temperature
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.
Categories
Leave a comment
Comments by Vanilla
Related Posts
The American Society of Heating and Ventilating Engineers Guide (1929) - Hot Water Heating Systems and Piping
This chapter on hot water heating systems and piping was prepared by Professor F.E. Giesecke (Director of Texas Engineering Experiment Station in TX) for the The American...
Jarecki Radiators (1890)
Here are ratings for the Erie radiator from Jarecki Mfg Co Ltd. They were based in Erie, PA and their radiators appeared in issues of Domestic Engineering in the 1890s.