During an existing gas cooking-appliance inspection, the approved combustion-air design relies on a dedicated opening. A later cover obstructs that opening so its free area is below the approved design requirement, and no alternate air-supply method has been provided. Which observed condition explains the air-supply deficiency?
- AThe appliance nameplate color
- The restricted combustion-air opening
- CThe room’s paint finish
- DThe kitchen being above the first floor
Where to look it up
https://codes.iccsafe.org/content/IRC2024P2/appendix-cc-recommended-procedure-for-safety-inspection-of-an-existing-appliance-installation
Why B is correct
The observed restriction reduces the air path required by the stated design. Appendix CC104, item 3, recommends checking nondirect-vent appliance combustion-air openings and ducts for blockage and restriction. The original question supplied no observations that could distinguish an undersized opening from other causes; this version provides that evidence. The appendix is an inspection guide, not a universal opening-size formula or an automatically adopted mandatory appendix. Confirm the actual combustion-air design, appliance instructions and applicable requirements before selecting a correction. Source: https://codes.iccsafe.org/content/IRC2024P2/appendix-cc-recommended-procedure-for-safety-inspection-of-an-existing-appliance-installation