ASME CSD-1:2018 pdf download

ASME CSD-1:2018 pdf download.Controls and Safety Devices for Automatically Fired Boilers
The rules of this Standard cover requirements for the assembly, installation, maintenance, and operation of controls and safety devices on automatically operated boilers directly fired with gas, oil, gas–oil, or electricity, subject to the service limitations, exclusions, and accep- tance of other listings in CG-120, CG-130, and CG-140, respectively. Burner or burner assemblies installed on boilers or as a replacement burner shall comply with the requirements of CF-110 and CF-410 for gas and oil firing, respectively. The use of a gaseous or oil fuel not listed in the definitions has not been evaluated, and special considerations may be required.
The following are excluded from the requirements of this Standard: (a) boilers with fuel inputratings greater than orequal to 12,500,000 Btu/hr (3 663 kW), falling within the scope ofNFPA 85, Boiler and Combustion Systems Hazard Code (b) water heaters (see CG-700) (c) direct gas-fired swimming pool heaters that are labeled and listed by a nationally recognized testing agency or other organization that is acceptable to the authority having jurisdiction as complying with ANSI Z21.56/CSA 4.7, Standard for Gas-Fired Pool Heaters
The following other listings are acceptable: (a) automatically operated boilers fired with gas having inputs of 400,000 Btu/hr (117 kW) or less that (1) complywith PartCW, CE-110(a), CE-110(b), and CE-110(j)(2) are labeled and listed by a nationally recognized testing agency or other organization that is acceptable to the authority having jurisdiction as complying with ANSI Z21.13/CSA 4.9, Standard for Gas-Fired Low Pressure SteamandHotWaterBoilers; meettheremainingrequire- ments of this Standard (see Nonmandatory Appendix A) (b) automaticallyoperated boilers fired with oil having inputs of 3 gph (11.4 L/h) or less that (1) complywith PartCW, CE-110(a), CE-110(b), and CE-110(j) (2) are labeled and listed by a nationally recognized testing agency or other organization that is acceptable to the authority having jurisdiction as complying with UL 726, Standard for Oil-Fired Boiler Assemblies; meet the remaining requirements of this Standard (c) automatically operated, electrically heated boilers having inputs of 115 kW or less that (1) comply with Part CW, CE-110(a), and CE-110(b) (2) are labeled and listed by a nationally recognized testing agency or other organization that is acceptable to the authority having jurisdiction as complying with UL 834, Standard for Heating, Water Supply, and Power Boilers — Electric; meet the remaining requirements of this Standard
bleed line: a section of piping or tubing that conveys the release ofgas from a fuel train component, which periodi- cally releases gas pressure to the atmosphere in order to operate properly. boiler: a closed vessel in which water or other liquid is heated, steam or vapor is generated, steam or vapor is superheated, or any combination thereof, under pressure or vacuum for use external to itself, by the direct applica- tion of heat from the combustion of fuels or from electricity. boiler, automatically fired: a boiler that cycles automati- cally in response to a control system. boiler, high-pressure: a boiler in which steam or vapor is generated at a pressure greater than 15 psig (100 kPa gage). boiler, hot-water: a hot-water heating boiler, hot-water supply boiler, or high-temperature water boiler. boiler, hot-water heating: a boiler in which no steam is generated and from which hot water is circulated for heating purposes, then returned to the boiler operating at a pressure less than or equal to 160 psig (1 100 kPa gage) or a temperature less than or equal to 250°F (120°C) at or near the boiler outlet. boiler, hot-water supply: a boiler that furnishes hot water to be used externally to itself at a pressure less than or equal to 160 psig (1 100 kPa gage) or a tempera- ture less than or equal to 250°F (120°C) at or near the boiler outlet. high-temperature water boiler: a water boiler intended foroperation atpressures inexcess of160 psig(1 100 kPa gage) and/or temperatures in excess of 250°F (120°C). boiler, low-pressure: a boiler in which steam or vapor is generated at a pressure less than or equal to 15 psig (100 kPa gage).