The prerequisite does not, however, apply to small units and other types of equipment, such as refrigerators and small water coolers that contain less than 0.5 pounds of refrigerant. 

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The prerequisite does not, however, apply to small units and other types of equipment, such as refrigerators and small water coolers that contain less than 0.5 pounds of refrigerant. 

 This prerequisite applies to all space conditioning and refrigeration systems included in the LEED scope of work, including:chillers;unitary HVAC equipment (split and packaged);room and window air-conditioners;computer, data center, and telecom room

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This prerequisite applies to all space conditioning and refrigeration systems included in the LEED scope of work, including:

chillers;
unitary HVAC equipment (split and packaged);
room and window air-conditioners;
computer, data center, and telecom room-cooling units;
and commercial refrigeration equipment.

If your project is purchasing new HVAC&R equipment, you'll automatically meet this prerequisite. The Montreal Protocol treaty mandated a complete phase out of CFC-based refrigerants by 1995, and HCFCs by 2030 in developed countries. As a result, compl

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If your project is purchasing new HVAC&R equipment, you'll automatically meet this prerequisite. The Montreal Protocol treaty mandated a complete phase out of CFC-based refrigerants by 1995, and HCFCs by 2030 in developed countries. As a result, compliant, environmentally preferable refrigerants are the only option available for new systems. 

IAQ testing should be worked into the construction schedule as it will occur close to project close-out, generally when the construction schedule is most critical. Testing will take a least one day, but could take longer depending on the number of tests r

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IAQ testing should be worked into the construction schedule as it will occur close to project close-out, generally when the construction schedule is most critical. Testing will take a least one day, but could take longer depending on the number of tests required. If any tests are failed, flush-out and retesting are required and will have significant scheduling impacts. This could require several additional days. 

Whether you have completed a full or a phased flush-out, record the performed flush-out dates, schedule, humidity levels, temperatures and total air volumes and provide this information in a narrative for credit documentation.   

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Whether you have completed a full or a phased flush-out, record the performed flush-out dates, schedule, humidity levels, temperatures and total air volumes and provide this information in a narrative for credit documentation.   

During the occupied phase of a flush-out under Option 1, Path 2, a minimum ventilation rate must begin at least three hours before daily occupancy and continue while the space is occupied (through the end of the business day, or other occupancy duration)

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During the occupied phase of a flush-out under Option 1, Path 2, a minimum ventilation rate must begin at least three hours before daily occupancy and continue while the space is occupied (through the end of the business day, or other occupancy duration) at a minimum rate of 0.30 cfm per ft2, or the design minimum rate determined in IEQp1, whichever is greater. 

If you are pursuing a phased flush-out under Option 1, Path 2, ensure that the flush-out continues after move-in until a total of 14,000 ft3 of outside air has been supplied per ft2 of floor area before the HVAC system is switched into its normal operatio

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If you are pursuing a phased flush-out under Option 1, Path 2, ensure that the flush-out continues after move-in until a total of 14,000 ft3 of outside air has been supplied per ft2 of floor area before the HVAC system is switched into its normal operational mode. 

For projects with multiple independent HVAC systems, portions of the building can be flushed out separately, as they are completed, as long as no additional construction work occurs in an area where a flush-out has begun. Completed areas should be isolate

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For projects with multiple independent HVAC systems, portions of the building can be flushed out separately, as they are completed, as long as no additional construction work occurs in an area where a flush-out has begun. Completed areas should be isolated from those under construction per SMACNA IAQ guidelines for Occupied Buildings Under Construction, which is the same standard that defines the requirements for IEQc3.1 (see Resources).

Per the credit requirements, during flush-out, the rate of outside air should not cause the interior temperature to drop below 60oF, and relative humidity should not exceed 60%.

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Per the credit requirements, during flush-out, the rate of outside air should not cause the interior temperature to drop below 60oF, and relative humidity should not exceed 60%.

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