855773667-LEED-v5-O-M-Reference-Guide-Launch-Edition-1 - Page 236
Extracted Content
Table 1. RESET Grade B monitor specifications
| RESET Grade B monitor specifications | CO2 | PM2.5 | TVOC |
|---|---|---|---|
Data loss | 10% | 10% | 10% |
Operating range for temperature | 0–40 | 0–40 | 0–40 |
Operating range for relative humidity | 10–80% RH non-condensing | 10–80% RH non-condensing | 10–80% RH non-condensing |
Sampling type | Active airflow | ||
Sensor output resolution | 5 ppm | 1 μg/m3 | 4.4 ppb |
Measuring range | 400–5000 ppm | 0-500 μg/m3 | 65–870 ppb |
Accuracy* | 400–2000 ppm: ±50 && 3% 2000–5000: ±50 && 5% | 0–150: ±5 && 15% 150–500: ±5 && 20% | 65–260 ppb: ±8.7 && 15% 260–870: ±8.7 && 20% |
| Performance check and re-calibration | Required | Required | Required |
Example If a reference monitor is reading 900 ppm, a Grade B monitor’s reading must read within 50 + (0.03 x 900) = ±77. The Grade B monitor’s reading must be between 823 and 977 ppm
AIR QUALITY BENCHMARKS & DATA REPORTING
Table 1 in the rating system includes benchmark levels for CO2 and PM2.5 to provide a starting point for projects to support data-driven indoor air quality (IAQ) decisions and encourage teams to aim for cleaner indoor air. The project may want to customize targets to address unique local conditions or project goals and circumstances.
For this credit, the project is required to report continuous monitoring data for at least three months. Before providing the monitoring data to GBCI, the project must review their data and remove invalid readings. Minor data gaps/data loss are expected and acceptable. The project must also complete an air quality monitoring questionnaire to explain their monitoring approach and reported data.
The 95th percentile and daily averages are calculated separately for each sensor/location.
Option 2. Targeted One-time Air Testing and Option 3. Targeted One-time Individual Organic Compounds Testing
Targeted, one-time air testing is used to obtain a snapshot of air quality conditions in occupied spaces.
U.S. Green Building Council LEED v5 Reference Guide for Operations and Maintenance, April 2025 Launch Edition 226