During smoke-control testing, the fan starts before the required dampers reach position. What must be corrected and retested?
- Correct and functionally test the approved control sequence
- BIncrease refrigerant charge for the described HVAC equipment and measured operating conditions
- CRemove smoke detectors
- DDisable status feedback
Why A is correct
The best answer is: Correct and functionally test the approved control sequence. Smoke control depends on coordinated fan, damper, pressure, alarm, and firefighter-control actions. Individual component operation does not prove system performance. The transferred operating condition requires the same design, installation, diagnostic, or safety principle in a different HVAC context. The other choices skip a prerequisite, conflict with the listed procedure, or treat a symptom without controlling its cause.