N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 4-5.15

Current through Register Vol. 46, No. 45, November 2, 2024

Section 4-5.15 - Low water cutoffs

(a) Devices required. Each automatically fired steam or vapor system boiler, regardless of date of installation, and each automatically fired hot water boiler installed after January 1, 1966, shall be equipped with an 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. 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 it shall be so located as to supply the requisite feedwater. The lowest safe water line shall be not lower than the lowest visible part of the water glass.

(b) Attachment. Such a fuel or feedwater control device may be attached direct to a boiler, or to the tapped openings provided for attaching a water glass direct 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 direct and as close as possible to the boiler. The straightway tapping of the Y or tee shall take the water glass fittings, and the side outlet of the Y or tee shall take the fuel cutoff or the water feeding device. The ends of all nipples shall be reamed to full-size diameter.

(c) Drain pipe. Designs embodying a float and float bowl shall have a vertical straightway valved 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.

(d) Boilers consisting of continuous piping affording no reservoir or water level practicable for the operation of a low water cutoff may be equipped with a flow valve or other suitable control which has been tested and approved in accordance with a code or standard commonly applied in the industry, e.g., AGA or UL.

(e) Heat generating apparatus shall be regarded as a new installation and subject to all applicable provisions relating to installations made after January 1, 1966 whenever both an existing burner and controls are replaced by a new burner and controls.

N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 4-5.15