Common Sources of CO
Common sources of potentially dangerous levels of CO are:
• Poorly maintained furnaces, gas heaters, or replaces.
• Dirty or plugged chimneys, or ue exhausts.
• Poorly maintained gas, oil, or kerosene appliances.
• Internal combustion engines (e.g., automobiles, lawnmowers, blowers).
CO and Appliance Malfunctions
The following table identies typical problems that can produce high levels
of CO.
Appliance Fuel Typical Problems
Gas furnaces
Room heaters
Oil,natural gas, or LPG
(liquied petroleum gas)
1. Cracked heat exchanger.
2. Not enough air to burn fuel properly.
3. Defective/blocked ue.
4. Maladjusted burner.
5. Building not properly pressurized.
Central Heating
Furnaces
Coal or Kerosene
1. Cracked Heat Exchanger
2. Not enough air to burn fuel properly
3. Detective Grate
Room heater’s
Centrel Heaters
Kerosene
1. Improper Adjustment
2. Wrong Fuel (not K-1)
3. Wrong wick or wick height
4. Not enough air to burn fuel
5. System not properly vented
Water heaters
Natural gas or LPG
1. Not enough air to burn fuel properly
2. Defective/blocked ue
3. Maladjusted burner
4.
Building not properly pressurized
Ranges Ovens
1. Not enough air to burn fuel
2. Maladjusted burner
3. Misused as a room heater
4.
System not properly vented
Stoves
Fireplaces
Gas, wood, coal
Natural gas or LPG
1. Not enough air to burn fuel properly
2. Defective/blocked ue
3. Green or treated wood
4.
Cracked heat exchanger
5. Cracked rebox