The following is a list of useful terms to use when researching additional Boiler information on each of the topics discussed:
A boiler that carries a pressure of more than fifteen pounds of steam per square inch (psig) and is rated in excess of ten horsepower, or that produces hot water over a pressure of one hundred sixty pounds per square inch or at a temperature over 250°F (121°C).
A device for the final conveyance of the gas, or a mixture of gas and air, to the combustion zone.
Per MC 107.2.4, a certificate of compliance is issued upon completion of the special inspection, and sign-off for the following service equipment:
A primarily vertical structure containing one or more flues, for the purpose of carrying gaseous products of combustion and air from a fuel-burning appliance to the outdoor atmosphere.
The minimum distance through air measured between the heat-producing surface of the mechanical appliance, device or equipment and the surface of the combustible material or assembly.
Refers to quality assurance testing process that verifies, and documents that the selected building systems have been designed, installed, and function according to the owner’s project requirements and construction documents, and to minimum code requirements. Mandatory when the permitted equipment exceeds a total heating capacity of 600 kBTU/h.
A space having a volume less than 50 cubic feet per 1,000 British thermal units per hour (Btu/h) (4.8 m3/kW) of the aggregate input rating of all appliances installed in that space.
Appliances that are constructed and installed so that all air for combustion is derived directly from the outside atmosphere and all flue gases are discharged directly to the outside atmosphere.
Air being removed from any space, appliance or piece of equipment and conveyed directly to the atmosphere by means of openings or ducts.
A passageway within a chimney or vent through which gaseous combustion products pass.
A completely self-contained heating unit that is designed to supply heated air to spaces remote from or adjacent to the appliance location.