NAC455C.278. Hot water boilers: Thermometer; operating control and secondary high limit control; stop valve.

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     1. Each hot water boiler must have a thermometer so located and connected that it is easily readable when observing the burner of the boiler. The thermometer must be so located and connected that it will at all times indicate, in degrees Fahrenheit, the temperature of the water in the boiler at or near the outlet.

     2. In addition to satisfying the requirements set forth in subsection 1, each hot water boiler must be equipped with:

     (a) An operating control and a secondary high limit control that automatically interrupts the fuel supply to the boiler if the boiler reaches its designed maximum operating temperature; and

     (b) A stop valve that has been installed in accordance with:

          (1) The applicable construction code, if any; or

          (2) Controls and Safety Devices for Automatically Fired Boilers, as adopted by reference in NAC 455C.108.

(Added to NAC by Div. of Industrial Relations by R101-02, eff. 12-15-2004)

                    
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