Final answer:
When gas logs are installed in a fireplace, the damper should be permanently blocked open to ensure proper ventilation and prevent toxic gas accumulation in the living space.
Step-by-step explanation:
When gas logs are installed in a fireplace, the damper should be permanently blocked open.
The damper is a metal or ceramic plate that is used to control the flow of air and smoke through the chimney. It is typically opened when the fireplace is in use to allow smoke and gases to escape, and closed when the fireplace is not in use to prevent drafts and conserve energy.
However, when gas logs are installed in a fireplace, they do not produce smoke or require the same amount of venting as wood-burning fires. Therefore, the damper should be blocked open to ensure proper ventilation and prevent any toxic gases from accumulating in the living space.