§ 5000-02 Amendment to ASHRAE 90.1 Relating to Lighting Controls and Modeling Requirements.
RCNY § 5000-02
Pursuant to § 28-103.19 of the Administrative Code of the City of New York, ASHRAE 90.1, as modified by Section ECC CA102.1 of the 2016 New York City Energy Conservation Code, is hereby amended to read as follows: 4.2.1.2 Additions to Existing Buildings. Revise Section 4.2.1.2 to read as follows: 4.2.1.2 Additions to Existing Buildings. Additions to existing buildings shall comply with either the provisions of Sections 5, 6, 7, 8, 9, and 10 or Section 11 or Normative Appendix G. 4.2.1.2.1 When an addition to an existing building cannot comply by itself, trade-offs will be allowed by modification to one or more of the existing components of the existing building. Modeling of the modified components of the existing building and addition shall employ the procedures of Section 11 or Normative Appendix G; the addition shall not increase the energy consumption of the existing building plus the addition beyond the energy that would be consumed by the existing building plus the addition if the addition alone did comply. 4.2.1.3 Alterations to Existing Buildings. Revise Section 4.2.1.3 to read as follows: 4.2.1.3 Alterations to Existing Buildings. Alterations of existing buildings shall comply with the provisions of Sections 5, 6, 7, 8, 9, and 10 or Section 11 or Normative Appendix G. Exception: Historic buildings need not comply with these requirements. 9.4.1.1 Interior Lighting Controls. Revise Item c of Section 9.4.1.1 to read as follows: c. Restricted to partial automatic ON: No more than 50% of the lighting power for the general lighting shall be allowed to be automatically turned on, and none of the remaining lighting shall be automatically turned on. For open plan offices, a control device meeting this requirement shall control no more than 2,500 ft 2 . Table 9.6.1 Lighting Power Density Allowances Using the Space-by-Space Method and Minimum Control Requirements Using Either Method. Revise Table 9.6.1 to read as follows: TABLE 9.6.1 Lighting Power Density Allowances Using the Space-by-Space Method and Minimum Control Requirements Using Either Method [Click here to view a PDF version of Table 9.6.1] Informative Note: This table is divided into two sections; this first section covers space types that can be commonly found in multiple building types. The second part of this table covers space types that are typically found in a single building type.The control functions below shall be implemented in accordance with the descriptions found in the referenced paragraphs within Section 9.4.1.1. For each space type: (1) All REQs shall be implemented.
(2)At least one ADD1 (when present) shall be implemented.
(3)At least one ADD2 (when present) shall be implemented. Local Control (See Section9.4.1.1(a))Restricted to Manual ON (See Section9.4.1.1(b))Restricted to Partial Automatic ON (See Section 9.4.1.1(c))Bilevel Lighting Control (See Section 9.4.1.1(d))Automatic Daylight Responsive Controls for Sidelighting (See Section 9.4.1.1(e)6)Automatic Daylight Responsive Controls for Toplighting (See Section 9.4.1.1(f)6)Automatic Partial OFF (See Section 9.4.1.1(g) (Full Off complies))Automatic Full OFF (See Section 9.4.1.1(h))Scheduled Shutoff (See Section 9.4.1.1(i))Common Space Types1LPD W/ft2RCR ThresholdabCdefghiInformative Note: This table is divided into two sections; this first section covers space types that can be commonly found in multiple building types. The second part of this table covers space types that are typically found in a single building type.The control functions below shall be implemented in accordance with the descriptions found in the referenced paragraphs within Section 9.4.1.1. For each space type: (1) All REQs shall be implemented.
2.In corridors, the extra lighting power density allowance is permitted when the width of the corridor is less than 8 ft and is not based on the RCR.
3.A "Facility for the Visually Impaired" is a facility that can be documented as being designed to comply with the light levels in ANSI/IES RP-28 and is licensed or will be licensed by local/state authorities for either senior long-term care, adult daycare, senior support and/or people with special visual needs.
4.For accent lighting, see Section 9.6.2(b).
5.Sometimes referred to as a "Picking Area." 6. Automatic daylight responsive controls are mandatory only if the requirements of the specified sections are present.
7.An additional 0.53w/ft 2 shall be allowed, provided that the additional lighting is controlled separately from the base allowance of 0.42 W/ft 2 . The additional 0.53 w/ft 2 allowance shall not be used for any other purpose.
8.Occupant sensor shall not have an override switch that converts from manual-on to automatic-on functionality.
9.The occupant sensor may have a grace period of up to 30 seconds to turn on the lighting automatically after the sensor has turned off the lighting if occupancy is detected. APPENDIX G – PERFORMANCE RATING METHOD G1.3 Trade-Off Limits. Revise Section G1.3 to read as follows: G1.3 Trade-Off Limits. RESERVED. TABLE G3.1 Modeling Requirements for Calculating Proposed and Baseline Building Performance. Revise Item 2 of Table G3.1 to read as follows: No. Proposed Building PerformanceBaseline Building Performance2. Additions and Alterations It is acceptable to predict performance using building models that exclude parts of the existing building provided that all of the following conditions are met:a. Work to be performed in excluded parts of the building shall meet the requirements of Sections 5 through 10.b. Excluded parts of the building are served by HVAC systems that are entirely separate from those serving parts of the building that are included in the building model.c. Design space temperature and HVAC system operating setpoints and schedules on either side of the boundary between included and excluded parts of the building are essentially the same.d. If a declining block or similar utility rate is being used in the analysis, and the excluded and included parts of the building are on the same utility meter, the rate shall reflect the utility block or rate for the building plus the addition.If the proposed building model excluded parts of the existing building, the baseline building model shall exclude them as well.When modeled, unmodified existing building component shall follow the same rules as new and modified building components. Revise Item 6 of Table G3.1 to read as follows: No. Proposed Building PerformanceBaseline Building Performance6. Lighting Lighting power in the proposed design shall be determined as follows:a. Where a complete lighting system exists, the actual lighting power for each thermal block shall be used in the model.b. Where a lighting system has been designed and submitted with design documents, lighting power shall be determined in accordance with Sections 9.1.3 and 9.1.4.c. Where lighting neither exists nor is submitted with design documents, lighting shall comply with but not exceed the requirements of Section 9. Where space types are known, lighting power shall be determined in accordance with the Space-by-Space Method. Where space types are not known, lighting power shall be determined in accordance with the Building Area Method.d. Lighting system power shall include all lighting system components shown or provided for on the plans (including lamps and ballasts and task and furniture- mounted fixtures).Exception: For multifamily dwelling units, hotel/motel guest rooms, and other spaces in which lighting systems are connected via receptacles and are not shown or provided for on building plans, assume identical lighting power for the proposed and baseline building designs in the simulations.e. Lighting power for parking garages and building facades shall be modeled.f. For lighting controls, at a minimum, the proposed building design shall contain the mandatory automatic lighting controls specified in Section 9.4.1 (e.g., automatic daylight responsive controls, occupancy sensors, programmable controls, etc.). These controls shall be modeled in accordance with (g) and (h).g. Automatic daylighting responsive controls shall be modeled directly in the proposed building design or through schedule adjustments determined by a separate daylighting analysis approved by the rating authority. Modeling and schedule adjustments shall separately account for primary sidelighted areas, secondary sidelighted areas, and toplighted areas.h. Other automatic lighting controls included in the proposed building design shall be modeled directly in the building simulation by reducing the lighting schedule each hour by the occupancy sensor reduction factors in Table G3.7 for the applicable space type. This reduction shall be taken only for lighting controlled by the occupancy sensors. Credit for other programmable lighting control in buildings less than 5,000 ft 2 can be taken by reducing the lighting schedule each hour by 10%.Interior lighting power in the baseline building design shall be determined using the values in Table G3.7.Exceptions: Where lighting neither exists nor is submitted with design documents, and the proposed building lighting power is determined in accordance with the Building Area Method, the baseline lighting power shall be determined in accordance with Table G3.8.Lighting shall be modeled having the automatic shutoff controls in buildings > 5,000 ft 2 and occupancy sensors in employee lunch and break rooms, conference/meeting rooms, and classrooms (not including shop classrooms, laboratory classrooms, and preschool through 12th grade classrooms). These controls shall be reflected in the baseline building design lighting schedules. No additional automatic lighting controls (e.g., automatic controls for daylight utilization and occupancy sensors in space types not listed above) shall be modeled in the baseline building design.Exterior lighting in areas identified as "Tradable Surfaces" in Table G3.6 shall be modeled with the baseline lighting power shown in Table G3.6. Other exterior lighting shall be modeled the same in the baseline building as in the proposed design. TABLE G3.1.1-4 Baseline System Descriptions Revise Table G3.1.1-4 to read as follows: TABLE G3.1.1-4 Baseline System Descriptions System No.System TypeFan ControlCooling Type (1)Heating Type (1)System No.System TypeFan ControlCooling Type (1)Heating Type (1)1. PTACPackaged terminal air conditionerConstant volumeDirect expansionHot-water fossil fuel boiler2. PTHPPackaged terminal heat pumpConstant volumeDirect expansionElectric heat pump3. PSZ-ACPackaged rooftop air conditionerConstant volumeDirect expansionFossil fuel furnace4. PSZ-HPPackaged rooftop heat pumpConstant volumeDirect expansionElectric heat pump5. Packaged VAV with ReheatPackaged rooftop VAV with reheatVAVDirect expansionHot-water fossil fuel boiler6. Packaged VAV with PFP BoxesPackaged rooftop VAV with parallel fan power boxes and reheatVAVDirect expansionElectric resistance7. VAV with ReheatVAV with reheatVAVChilled waterHot-water fossil fuel boiler8. VAV with PFP BoxesVAV with parallel fan-powered boxes and reheatVAVChilled waterElectric resistance9. Heating and VentilationWarm air furnace, gas firedConstant volumeNoneFossil fuel furnace10. Heating and VentilationWarm air furnace, electricConstant volumeNoneElectric resistance11. SZ-VAVSingle-zone VAVVAVChilled waterSee note 2.12. SZ-CV-HWSingle zoneConstant volumeChilled waterHot-water fossil fuel boiler13. SZ-CV-ERSingle zoneConstant volumeChilled waterElectric resistance Notes: 1. For purchased chilled water and purchased heat, see G3.1.1.3.
