Combustion Safety - Apply

Level 3 of the Combustion Safety module, which focuses on: What is the difference between testing for combustion safety under the worst-case scenario, and the normal operation scenario? Understand how to calculate the volume of indoor air required for safe combustion and ventilation of natural draft appliances using indoor air. Understand how to perform a combustion safety analysis on natural draft appliances that use indoor air and make upgrades to these combustion systems. Understand how to perform a combustion safety analysis on natural draft appliances that use outdoor air and make upgrades to these combustion systems through appliance zone isolation. What should be done if significant levels of CO are detected in the ambient air of the building or in the appliance's flue gas during a combustion safety test?