When should the outdoor damper be fully open?

The scenario where the outdoor damper should be fully open is specifically during cooling in low ambient conditions or when CO2 detectors activate. In cooling mode, especially in lower temperatures outside, allowing outdoor air into the system can help maintain indoor air quality while also ensuring efficient operation. This is particularly important when CO2 levels rise, as it indicates the indoor air quality is declining and fresh, cooler outdoor air can alleviate that problem.

When the outdoor damper is fully open under these conditions, it allows for effective ventilation, helping to remove stale air while bringing in fresh air, which can improve overall system efficiency and comfort. The system can utilize the cooler outside air to cool the indoor environment without overworking the cooling equipment, contributing to energy savings and better performance.

Utilizing the outdoor damper in this way aligns with best practices for ventilation and indoor climate control, emphasizing the importance of fresh air in maintaining both comfort and health standards within indoor spaces.