Erratum
PPM setpoints under Additional Guidance
Erratum Number
IEQ1-E-OFF1.1-1487
Guidance
2016-07-12
The following reference set points (in parts-per-million) are established within IEQ-3 ‘Carbon Dioxide Monitoring and Control’ to correlate with this credit as follows:
Delete 650PPM and 600PPM, so that the setpoints read:
– 700PPM for 33% increase (for 10.5l/s per person)
– 640PPM for 66% increase (for 12.5l/s per person)
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Credit Interpretation Request
Pro-rata for ventilation rates
Credit Interpretation Request Number
IEQ1-C-OB1-1381
Guidance
2016-04-18
Where there is more than one Air Handling Unit in a single plant room that receives outside air, the outside air per Air Handling Unit may be pro-rated. The total outside air supplied to the plant room is to be pro-rated per Air Handling unit based on the total airflow of each Air Handling Unit, and respectively allocated. The following calculation must be used to demonstrate compliance with relevant credit criteria:
Fresh Air Per AHU = ( AHU Supply Air/Total Supply Air) x Total Fresh Air
In order to demonstrate compliance with the above methodology, the Short Report must show the calculations completed demonstrating compliance with the above methodology and relevant credit criteria. The design must just ensure that fresh air can be evenly distributed between the various AHUs.
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