An approved rated-wall detail requires a specific protected penetration assembly for an HVAC opening. The proposed PTAC installation omits that protection. What is the appropriate response?
- AAssume every PTAC is exempt from wall protection.
- Resolve the deviation against the approved assembly before installation.
- CReplace the detail with ordinary expanding foam without approval.
- DIgnore the wall rating because the unit is small.
Where to look it up
Explicit exercise assumptions; not a universal code requirement.
Why B is correct
The project explicitly requires the protected assembly. Equipment type alone does not waive that condition. Obtain a compliant detail rather than claiming a blanket fire-damper exemption.