SECTION 380:25-7-7. Automatic low water fuel cutoff and/or water feeding device

(a)   Each automatically fired steam vapor system boiler shall be equipped with two automatic low water fuel cutoff so located as to automatically cut off the fuel supply when the surface of the water falls to the lowest safe water line. The lowest connected water fuel cutoff shall provide safety shutdown and lockout with a manual reset. Each automatically fired hot water heating and/or supply boiler shall be equipped with an automatic low water fuel cut off and/or flow sensing device as required by the ASME Boiler and Pressure Vessel Code and this Act. If a water feeding device is installed, it shall be so constructed that the water inlet valve cannot feed water into the boiler through the float chamber and so located as to supply requisite feedwater. The lowest safe waterline should not be lower than the lowest visible part of the water glass or as otherwise permitted by the applicable ASME Code.

(b)   Such fuel or feed water control device may be attached directly to a boiler or for low pressure boilers to the tapped openings provided for attaching a water glass directly to a boiler, provided that such connections from the boiler are nonferrous tees or Y's not less than 1/2 inch pipe size between the boiler and the water glass, so that the water glass is attached directly and as close as possible to the boiler: the straightway tapping of the Y or tee to take the water glass fittings, the side outlet of the Y or tee to take the fuel cut off or water feeding device. The ends of all nipples shall be reamed to full size diameter.

(c)   Designs embodying a float and float bowl shall have a vertical straight away valve drain pipe at the lowest point in the water equalizing pipe connections by which the bowl and the equalizing pipe can be flushed and the device tested.

[Source: Amended at 16 Ok Reg 3017, eff 7-12-99]