During a Carrier 59SC6A furnace inspection, the installer treats the front combustion-air clearance as also providing service access. In Table 2 of its installation instructions, what front space is identified for service, subject to local building codes?
- A1 inch
- 24 inches
- C0 inches
- D12 inches
Where to look it up
https://www.shareddocs.com/hvac/docs/1009/Public/0A/59SC6A-01SI.pdf
Why B is correct
Table 2 distinguishes service access (24 inches) from the front combustion-air clearance (1 inch). Different purposes require different checks; these dimensions are specific to this furnace manual. Source: https://www.shareddocs.com/hvac/docs/1009/Public/0A/59SC6A-01SI.pdf