Gas Fitter Practice Test

What should be done if the flue outlet is below the required height for safety?

1. Install a taller flue pipe

2. Add baffles

3. Use different burner types

4. Adjust the furnace installation angle

The correct answer is: Install a taller flue pipe

When addressing the issue of a flue outlet being below the required height for safety, installing a taller flue pipe is the appropriate course of action. This ensures that the flue can effectively vent combustion gases away from the appliance and the building. A taller flue pipe improves draft, aiding in the efficient removal of gases while reducing the likelihood of backdrafts that can result in dangerous situations, such as carbon monoxide entering living spaces. Increasing the height of the flue outlet is crucial for maintaining compliance with safety codes and regulations, which are often designed to protect both the structure and the occupants from the hazards associated with improper venting systems. While other options, such as adding baffles or using different burner types, may have their applications, they do not directly address the fundamental issue of flue height. Adjusting the furnace installation angle could potentially alter the dynamics of the venting system but again is not a solution that specifically resolves a height deficiency. Thus, installing a taller flue pipe directly impacts safety by ensuring proper venting and alignment with established safety standards.