§ 7-9. International Energy Conservation Code—Adopted.

There is hereby adopted by the city council the 2015 edition of the International Energy Conservation Code.

Section C403.2.11 is amended.

C403.2.11 Mechanical systems commissioning and completion requirements. Mechanical systems shall be commissioned and completed in accordance with Section C408.2. (Optional)

Section C403.3 is amended.

C403.3 Economizers (Prescriptive). Each cooling system that has a unitary packed roof top unit shall include either an air or water economizer complying with Sections C403.3.1 through C403.3.4

Exceptions: Economizers are not required for the systems listed below.

1.

In cooling systems for buildings located in Climate Zones 1A and 1B.

2.

In climate zones other than 1A and 1B, where individual cooling units have a capacity of less than 54,000 Btu/h (15.8 kW) and meet one of the following:

2.1.

Have direct expansion cooling coils.

2.2.

The total chilled water system capacity less the capacity of fan units with air economizers is less than the minimum specified in Table C403.3(1).

The total supply capacity of all fan-cooling units not provided with economizers shall not exceed 20 percent of the total supply capacity of all fan-cooling units in the building or 300,000 Btu/h (88 kW), whichever is greater.

3.

Where more than 25 percent of the air designed to be supplied by the system is to spaces that are designed to be humidified above 35°F (1.7°C) dewpoint temperature to satisfy process needs.

4.

Systems that serve residential spaces where the system capacity is less than five times the requirement listed in Table C403.3(1).

5.

Systems expected to operate less than 20 hours per week.

6.

Where the use of outdoor air for cooling will affect supermarket open refrigerated casework systems.

7.

Where the cooling efficiency meets or exceeds the efficiency requirements in Table C403.3(2).

8.

Chilled-water cooling systems that are passive (without a fan) or use induction where the total chilled water system capacity less the capacity of fan units with air economizers is less than the minimum specified in Table C403.3(1).

9.

Systems that include a heat recovery system in accordance with Section C403.4.7.

Section C408 is amended.

SECTION C408 SYSTEM COMMISSIONING (Optional)

(Ord. No. 2006-O-234, pt. 8, 10-16-06; Ord. No. 2009-O-159, pt. 6, 9-21-09; Ord. No. 2017-O-018 , § 1, 3-10-17)