On a office renovation during plan review, listed equipment instructions prohibit the mounting orientation shown on the drawings; what should control installation?
- AInstaller preference
- BThe lowest-cost orientation
- Follow the listing or redesign
- DThe drawing regardless of listing
Why C is correct
Listed equipment must be installed in accordance with instructions included in its listing; conflicts require resolution, not improvisation. The best answer is therefore “The listing and manufacturer instructions unless an approved redesign is obtained.” The other choices either address a different system, rely on an unsafe shortcut, or make a conclusion not supported by the stated facts.