§ 23.60.C403.2.6. Energy recovery ventilation systems.

Amend the exception by revising condition Number 8 to read as follows:

8.

For each system where the largest source of air exiting the building at a single location at the building exterior is less than 75 percent of the design outdoor airflow rate.

Amend the exception by adding condition number 10 as follows:

10.

Where the system does not operate continuously and is controlled only to operate under a safety operation such as carbon monoxide exhaust systems in garages.

Amend the exception by adding condition number 11 as follows:

11.

Where it is demonstrated that simple economic payback is greater than 20 years. Market value equipment, construction and utility costs at the time of design shall be used to determine economic payback.

( AO No. 2015-127, § 1, 4-1-16 )