Here are photos of a circa-1944 Perfex Series 155 Magic Dial Thermostat, as well as the instruction manual.
Burnham America Catalog (1980s)
A catalog from the Burnham Corporation circa 1980s featuring boilers for steam and hot-water heating systems, as well as Burnham Base-Ray cast-iron baseboard, the Duo-Rad fan coil heating unit, and radiator ratings. It includes information about the:
- Series 22A
- Series 4
- Series 5
- Series 8-B
- Series 2
- Freedom 62
- Fiesta II
- V1 Series
- V3 Series
- PF-3 Series
- PF-5 Series
- Care-Free Electric Boiler
- BBCA Series
- HE-FR Series
- HWS Series
- FD Series
- GA Series
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Perfex Series 155 Magic Dial Thermostat
The American Society of Heating and Ventilating Engineers Guide (1929) - Hot Water Heating Systems and Piping
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