Found this link to a manual for the Williams Wall Heaters... Model 1043621.05 is LP Gas Model Model 1043622.05 is Natural Gas Model http://www.hammerwall.com/Download_Manual/3249/ Temperature is set using a thermostat as explained in the above manual. Use IE Explorer Browser, manual does not display in Google Chrome as a number of other PDF files don't either, must be a bug.
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Found this link to a manual for the Williams Wall Heaters...
Model 1043621.05 is LP Gas Model Model 1043622.05 is Natural Gas Model
http://www.hammerwall.com/Download_Manual/3249/
Temperature is set using a thermostat as explained in the above manual.
Use IE Explorer Browser, manual does not display in Google Chrome as a number of other PDF files don't either, must be a bug.