Statutes, codes, and regulations
New York Codes, Rules and Regulations
Title 12 - DEPARTMENT OF LABORChapter I - Industrial Board Of AppealsSubchapter A - The Industrial CodePart 4 - Low Pressure Boilers
Subpart 4-5 - Specific Requirements For Low Pressure Heating System Boilers
Section 4-5.17 - High limit controls

N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 4-5.17

Download
PDF
Current through Register Vol. 46, No. 50, December 11, 2024
Section 4-5.17 - High limit controls
(a) Application of this section. This section shall apply only to low pressure automatically fired heating system boilers installed after March 31, 1965. Heat generating apparatus shall be regarded as a new installation and subject to all applicable provisions relating to installations made after March 31, 1965 whenever both an existing burner and controls are replaced by a new burner and controls.
(b) Hot water boilers. In addition to the operating limit control, each hot water boiler shall be provided with a high limit temperature-actuated control which by interruption of an electrical circuit will automatically stop the heat generating apparatus if the temperature of the water at or near the boiler outlet rises to 30 degrees Fahrenheit above the maximum allowable working temperature of the boiler.
(c) Steam boilers. In addition to the operating limit control, each steam boiler shall be provided with a high limit pressure-actuated control which by interruption of an electrical circuit will automatically stop the heat generating apparatus if the steam pressure rises to five pounds psi gage above the maximum allowable working pressure of the boiler.
(d) Adjustment. Such control shall be adjustable and capable of being firmly fixed or sealed in proper adjustment. Fixed or sealed as used herein means that the control device shall be so arranged that it will not change during normal operation of the boiler.
(e) Manual reset. Each such control shall be of the manual reset type, designed to reclose only by manual operation.
(f) Circuits. Each such control shall be so incorporated into the electrical circuit essential to the operation of the heat generating apparatus that its automatic operation shall interrupt an ungrounded conductor and stop the heat generating apparatus regardless of the functioning of any other electrical device.

N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 4-5.17