The International Fuel Gas Code outlines code for gas piping, chimney and vent and gaseous hydrogen systems, as well as general regulations. Appendix D outlines the recommended procedures for proper safety inspection of an existing appliance installation, including furnaces and boilers. This resources is available from many online book sellers.
The Minnesota State Mechanical, Fuel Gas and Plumbing Code guide outlines residential, electrical, mechanical, plumbing, private sewage disposal, energy conservation, property maintenance and fire codes. The code outlines important regulations including the air-free carbon monoxide reading above 400ppm being unsafe to operate (Appendix D). This resource is also available from online book sellers.
This fact sheet outlines the guidelines and steps involved in a furnace heat exchanger leakage test. It outlines the proper procedures contractors must take to ensure testing is carried out thoroughly and safely.
The National Comfort Institute provides heating, air conditioning, plumbing and electrical contractors with a focused offering of services and tools to help them improve their businesses. NCI provides technical tools, training, support and coaching, helping HVAC professionals measure their performance, quality and value.
The National Comfort Institute provides heating, air conditioning, plumbing and electrical contractors with a focused offering of services and tools to help them improve their businesses. NCI provides technical tools, training, support and coaching, helping HVAC professionals measure their performance, quality and value.
If the operation of a furnace would jeopardize or is jeopardizing the health of occupants of the home, it may get red-tagged. In the past, businesses would place a red tag on the furnace to alert people that it was unsafe and needed to be shut off. Although most businesses no longer use red tags, the term remains. When a furnace is a danger to anyone or anything around it, it may be shut down/red-tagged.