Carbon Monoxide Levels In Furnace Exhaust

Maximum allowable outdoor concentration for one hour period in any year epa ashrae 40 ppm.

Carbon monoxide levels in furnace exhaust.

Get annual maintenance on your furnace. Use your cellphone to check for obstructions in side wall furnace vent pipes. Below are some steps you can take to prevent carbon monoxide leaks in your furnace. The pipe that is turn upwards should be the exhaust the pipe turned downwards should be the combustion air intake.

Levels near properly adjusted gas stoves are often 5 to 15 ppm and those near poorly adjusted stoves may be 30 ppm or higher. Unfortunately many people are injured or killed from exposure to toxic levels of carbon monoxide that are traced back to a malfunctioning combustion appliance. Steps to reduce exposure to carbon monoxide it is most important to be sure combustion equipment is maintained and properly adjusted. When all systems are operating normally that toxic gas goes harmlessly up the flue.

During disconnected vent tests. The current ansi z21 47 standard 1998 requires that an air free flue gas sample of co not exceed a maximum of 400 ppm 0 04 percent when a furnace vent is either partially or completely blocked. How to avoid the dangers of carbon monoxide leaks from your furnace. 21 percent increase in cardiorespiratory complaints kurt 1978.

A nest or clog in either the fresh air or the combustion side can cause carbon monoxide poisoning. Carbon monoxide co an odorless colorless gas which can cause sudden illness and death is produced any time a fossil fuel is burned. Cdc works with national state local and other partners to raise awareness about co poisoning and to monitor co related illness and death in the u s. The average steady state concentration of co in the chamber increased as the firing rate increased.

Greiner unpublished 27 ppm. For a number of different reasons your furnace can develop a crack in its heat exchanger or flue pipes. Typical concentration in flue gases chimney of a properly operating furnace or water heater. If this were to happen it could cause carbon monoxide to leak into your home s air.