D.C. Mun. Regs. tit. 12, 12-I9.1

Current through Register Vol. 71, No. 44, November 1, 2024

Section 12-I9.1 - GENERAL

Strike Section 9.1.1 of ASHRAE 90.1 in its entirety and insert a new Section 9.1.1 in its place in the Energy Conservation Code-Commercial Provisions to read as follows:

9.1.1

Scope. This section shall apply to the following:

a. Interior spaces of buildings.

b. Exterior building features, including façades, illuminated roofs, architectural features, entrances, exits, loading docks, and illuminated canopies.

c. Exterior building grounds lighting provided through the building's electrical service.

Exceptions:

1. Emergency lighting that is automatically off during normal building operation.

2. Lighting within dwelling units provided that 85% of the lamps in permanently installed luminaires are high efficacy.

3. Lighting that is specifically designated as required by a health or life safety statute, ordinance, or regulation.

4. Decorative gas lighting systems.

Strike Section 9.1.2 of ASHRAE 90.1 in its entirety and insert a new Section 9.1.2 in its place to read as follows:

9.1.2

Lighting Alterations. For the alteration of any lighting system in an interior space, that space shall comply with the lighting power density (LPD) requirements of Section 9 applicable to that space and the automatic shutoff requirements of Section 9.4.1.1. For the alteration of any lighting system in an exterior building application, that lighting system shall comply with the lighting power density (LPD) requirements of Section 9 applicable to the area illuminated by that lighting system and the applicable control requirements of Sections 9.4.1.4(a) and 9.4.1.4(b). Such alterations shall include all luminaires that are added, replaced or removed. This requirement shall also be met for alterations that involve only the replacement of lamps plus ballasts. Alterations do not include routine maintenance or repair situations.

Exception: Alterations that involve replacing less than 50% of the connected lighting load in a space or area need not comply with these requirements, provided that such alterations do not increase the installed LPD.

Strike Section 9.1.4 of ASHRAE 90.1 in its entirety and insert a new Section 9.1.4 in its place to read as follows:

9.1.4

Interior and Exterior Luminaire Wattage. Luminaire wattage, when used to calculate either installed interior lighting power or installed exterior lighting power, shall be determined in accordance with the following criteria:

a. The wattage of line-voltage luminaires not containing permanently installed ballasts, transformers, or similar devices shall be the manufacturers' labeled maximum wattage of the luminaire.

Exception: Where lighting is connected to a current limiter and containing high efficacy lamping shall be designed to use the wattage of the current limiter.

b. The wattage of luminaires with permanently installed or remote ballasts, transformers, or similar devices shall be the operating input wattage of the maximum lamp/auxiliary combination based on values from the auxiliary manufacturers' literature or recognized testing laboratories or shall be the maximum labeled wattage of the luminaire.

Exception: Lighting power calculations for ballasts with adjustable ballast factors shall be based on the ballast factor that will be used in the space, provided that the ballast factor is not user changeable.

c. For line-voltage lighting track and plug-in busway designed to allow the addition and/or relocation of luminaires without altering the wiring of the system, the wattage shall be

1. The specified wattage of the luminaires included in the system with a minimum of 30 W/lin ft,

2. The wattage limit of the system's circuit breaker, or

3. The wattage limit of other permanent current-limiting device(s) on the system.

d. The wattage of low-voltage lighting track, cable conductor, rail conductor, and other flexible lighting systems that allow the addition and/or relocation of luminaires without altering the wiring of the system shall be the specified wattage of the transformer supplying the system.

e. The wattage of all other miscellaneous lighting equipment shall be the specified wattage of the lighting equipment.

D.C. Mun. Regs. tit. 12, 12-I9.1

Final Rulemaking published at 67 DCR 5679 (5/29/2020)