The owner's manual for the Honeywell Chronotherm III can be found by performing a keyword search of Technical Literature on the Honeywell website. The manual is available as a PDF file for download and easy perusal to master the operation of the Chronotherm III programmable thermostat.
Honeywell offers a wide variety of heating, ventilation and cooling control products like the Chronotherm III. It also has an extensive offering for home, industrial or commercial use of air quality control devices, security devices and lighting controls.
Honeywell has its roots in 1885 by Albert Butz, an inventor who patented a furnace regulation and alarm system. In 1927, the Minneapolis Heat Regulator Company, who had purchased Butz's patents and business, merged with Honeywell Heating Specialty Company, founded in 1904. This newly-merged company began to diversify into many areas of heating control devices.