All gas appliances and their flue or vent connectors shall be installed so that continued or intermittent operation will not create a hazard to persons or property. They shall not, during operation, raise the temperature of unprotected combustible walls, partitions, floors or ceilings more than ninety degrees Fahrenheit above normal room temperature when measured with mercury thermometers or conventional bead-type thermocouples. When wall and partition temperatures are measured with disc-type thermocouples as specified in American Standard Approval Requirements, or equivalent, for the types of appliances involved, an indicated temperature rise of 120 degrees Fahrenheit will correspond to the ninety degrees Fahrenheit rise measured with thermometers or conventional bead-type thermocouples.
(Ord. 368. Passed 8-4-50.)