§ 18-367. Adoption of International Energy Conservation Code (2012); amendments.

The International Energy Conservation Code (2012), promulgated by the International Code Council, is adopted and incorporated in this article by reference as if fully set forth, except as it is amended by the following provisions of this section. Provisions of this article are in addition to the provisions of the International Energy Conservation Code. The following provisions coinciding with provisions of the International Energy Conservation Code supersede, or delete, when indicated, the corresponding provisions of the International Energy Conservation Code.

All references within the model codes to any building, electrical, gas, mechanical, plumbing, sewage disposal, elevator, energy conservation, or existing building code shall be construed to be a reference to the respective building, electrical, gas, mechanical, plumbing, sewage disposal, elevator, energy conservation, or existing building code specifically adopted by reference in articles II through XIV of this chapter.

Chapter 1 [CE], SCOPE AND ADMINISTRATION is deleted. See Article I of this chapter.

Table C402.1.2. Under Climate Zone 4, amend the following items:

'Roofs; Insulation entirely above deck; All Other & Group R' - U-0.048

'Walls, Above Grade; Wood framed and other; All Other & Group R' - U-0.082

(Remainder of table unamended.)

Table C402.2. Under Climate Zone 4, amend the following items:

'Roofs; Insulation entirely above deck; All Other & Group R' — R-20ci

'Walls, Above Grade; Wood framed and other; All Other & Group R' — R-13

(Remainder of table unamended.)

C402.3.1 Maximum area. The vertical fenestration area (not including opaque doors and opaque spandrel panels) shall not exceed 40 percent of the gross above grade wall area. The skylight area shall not exceed 3 percent of the gross roof area.

C402.3.1.1 Increased vertical fenestration area with daylighting controls is deleted.

C402.3.1.2 Increased skylight area with daylighting controls. The skylight area shall be permitted to be a maximum of 5 percent of the roof area provided automatic daylighting controls are installed in daylight zones under skylights.

C406 Additional Efficiency Package Options is deleted.

C408 System Commissioning is deleted.

Chapter 1 [RE], SCOPE AND ADMINISTRATION is deleted. See Article I of this chapter.

Table R402.1.1. Under Climate Zone 4, amend the following item:

'Wood Frame Wall R-Value' — 13

(Remainder of table unamended.)

Table R402.1.3. Under Climate Zone 4, amend the following item:

'Wood Frame Wall U-Factor' — 0.082

(Remainder of table unamended.)

R402.2.9, Exception. Insulation at the interface between the foundation wall and slab may be omitted.

Table R402.4.1.1. Under 'Walls', amend first sentence to read: "Corners and headers shall be sealed and the junction of the foundation and sill plate shall be sealed." Under 'Fireplace, delete: "Fireplaces shall have gasketed doors." (Remainder of table unamended.)

R402.4.1.2 Testing. Building leakage testing shall be conducted where required by the building official . Where required by the building official , the testing shall be conducted by an approved third party. A written report of the results of the test shall be signed by the party conducting the test and provided to the building official . Testing shall be performed at any time after creation of all penetrations of the building thermal envelope . Effective January 1, 2014, the building or dwelling unit shall have an air leakage rate of not exceeding 5 air changes per hour when tested with a blower door at a pressure of 0.2 inches w.g. (50 Pascals).

During testing:

1.

Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended weatherstripping or other infiltration control measures;

2.

Dampers including exhaust, intake, makeup air, backdraft and flue dampers shall be closed, but not sealed beyond intended infiltration control measures;

3.

Interior doors, if installed at the time of the test, shall be open;

4.

Exterior doors for continuous ventilation systems and heat recovery ventilators shall be closed and sealed;

5.

Heating and cooling systems, if installed at the time of the test, shall be turned off; and,

6.

Supply and return registers, if installed at the time of the test, shall be fully open.

R403.2.2 Sealing (Mandatory). Ducts, air handlers, and filter boxes shall be sealed. Joints and seams shall comply with Section M1601.4.1 of this code.

Exceptions:

1.

Air-impermeable spray foam products shall be permitted to be applied without additional joint seals.

2.

Where a duct connection is made that is partially inaccessible, three screws or rivets shall be equally spaced on the exposed portion of the joint so as to prevent a hinge effect.

3.

Continuously welded and locking-type longitudinal joints and seams in ducts operating at static pressures less than 2 inches of water column (500 Pa) pressure classification shall not require additional closure systems.

Duct system tightness shall be verified by testing where required by the building official . Effective January 1, 2014, duct system tightness shall comply with either of the following:

1.

Postconstruction test: Total leakage shall be less than or equal to 4 cfm per 100 square feet of conditioned floor area when tested at a pressure differential of 0.1 inches w.g. (25 Pa) across the entire system, including the manufacturer's air handler enclosure. All register boots shall be taped or otherwise sealed during the test.

Exception: Postconstruction test with leakage to outdoors less than or equal to 8 cfm per 100 square feet of conditioned floor area.

2.

Rough-in test: Total leakage shall be less than or equal to 4 cfm (113.3 L/min) per 100 ft (9.29 m ) of conditioned floor area when tested at a pressure differential of 0.1 inches w.g. (25 Pa) across the system, including the manufacturer's air handler enclosure. All registers shall be taped or otherwise sealed during the test. If the air handler is not installed at the time of the test, total leakage shall be less than or equal to 3 cfm (85 L/min) per 100 square feet (9.29 m ) of conditioned floor area.

Exception: The duct system leakage test is not required for ducts and air handlers located entirely within the building thermal envelope.

R403.2.2.1 (R403.2.2.1) Sealed air handler. Air handlers shall have a manufacturer's designation for an air leakage of no more than 2 percent of the design air flow rate when tested in accordance with ASHRAE 193.

R403.2.3 Building cavities (Mandatory). Building framing cavities used as ducts or plenums shall be sealed to prevent leakage through the thermal envelope.

R404.1 Lighting equipment (Mandatory). Fuel gas lighting systems shall not have continuously burning pilot lights.

(Ord. No. 040477, § 1, 8-12-04; Ord. No. 071193, § 1, 1-3-08; Ord. No. 120375, § 1, 5-24-12)