New York Codes, Rules and Regulations
Title 12 - DEPARTMENT OF LABOR
Chapter I - Industrial Board Of Appeals
Subchapter A - The Industrial Code
Part 4 - Low Pressure Boilers
Subpart 4-5 - Specific Requirements For Low Pressure Heating System Boilers
Section 4-5.18 - Modular low pressure systems
Current through Register Vol. 46, No. 12, March 20, 2024
(a) Hot water modular systems comprised of no more than 10 boilers with a combined maximum input of no more than 3,000,000 BTU/hr may be equipped with one low water cutoff and one high limit manual reset temperature control provided that there are no stop valves between each boiler and the supply and return lines.
(b) Steam or vapor modular systems comprised of no more than 10 boilers with a combined maximum input of no more than 3,000 lbs/hr may be equipped with one high limit manual reset pressure control provided that there are no stop valves between each boiler and the supply and return lines.
(c) The modular systems described in subdivisions (a) and (b) of this section shall cover no more than 100 square feet of floor area.
(d) One stop valve must be installed in the common supply and common return lines which shall not isolate the controls from the boilers.
(e) The clearance requirements in sections 4-6.4 and 4-6.5 of this Part between each boiler in a modular system need not be met provided that there are no controls or other equipment located on the sides of each boiler which would require maintenance or inspection.
