BUILDING LIGHTING Modeling Requirements Appendix G. 1 Exceeding Standard ASHRAE Learning Institute

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1 BUILDING LIGHTING Modeling Requirements Appendix G 1 Exceeding Standard ASHRAE Learning Institute

2 Appendix G: Modeling Requirements Lighting - Proposed Design Lighting System Power - Proposed Design In the proposed design, the lighting system power shall be determined as follows: 1. Where a complete lighting system exists, the actual lighting power for each thermal block shall be used in the model. Based on system audit or documentation 2. Where a lighting system has been designed, lighting power shall be determined in accordance with Sections and Must include all lighting and be counted using wattage rules 3. Where lighting neither exists nor is specified, lighting power shall be determined in accordance with the Building Area Method for the appropriate building type. 2 Exceeding Standard ASHRAE Learning Institute

3 Appendix G: Modeling Requirements Lighting - Proposed Design Lighting System Power - Proposed Design Lighting system power shall include: All lighting system components shown or provided for on the plans. This includes 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. (note hotel/motel guest room lighting part of compliance) Lighting power for parking garages and building facades shall be modeled. Considered part of building load and therefore modeled. Other exterior lighting not modeled not part of App. G (ECB) complaince 3 Exceeding Standard ASHRAE Learning Institute

4 Appendix G: Modeling Requirements Lighting - Proposed Design Daylighting - Proposed Design Credit may be taken for the use of automatic controls for daylight utilization but only if their operation is: Modeled directly in the building simulation (Some tools have this capability) or Modeled in the building simulation through schedule adjustments determined by a separate daylighting analysis approved by the rating authority. 4 Exceeding Standard ASHRAE Learning Institute

5 Appendix G: Modeling Requirements Lighting - Proposed Design Lighting Controls - Proposed Design For automatic lighting controls in addition to those required for minimum code compliance under Section 9.4.1, credit may be taken for automatically controlled systems by reducing the connected lighting power by the applicable percentages listed in Table G3.2. Alternatively, credit may be taken for these devices by modifying the lighting schedules used for the proposed design, provided that credible technical documentation for the modifications are provided to the rating authority. 5 Exceeding Standard ASHRAE Learning Institute

6 TABLE G3.2 Power Adjustment Percentages for Automatic Lighting Controls Automatic Control Devices(s) Non-24-hr and 5,000ft2 All Other (1) Programmable timing control 10% 0% (2) Occupancy sensor 15% 10% (3) Occupancy sensor and programmable timing control 15% 10% Note: The 5,000 ft2 condition pertains to the total conditioned floor area of the building.

7 Appendix G: Modeling Requirements Lighting - Baseline Building Baseline Building Lighting power in the baseline building design shall be determined using the same categorization procedure (building area or space function) and categories as the proposed design. (whole bldg or space-by-space) The lighting power shall be set equal to the maximum allowed for the corresponding method and category in Section 9.2. No automatic lighting controls (e.g., programmable controls or automatic controls for daylight utilization) shall be modeled in the baseline building design The lighting schedules used are understood to reflect the mandatory control requirements in this standard. 7 Exceeding Standard ASHRAE Learning Institute

8 9.1 GENERAL LIGHTING REQUIREMENTS 8 Exceeding Standard ASHRAE Learning Institute

9 SCOPE of REQUIREMENTS Requirements apply to: ( 9.1.1) Interior spaces of buildings Exterior building features Exterior building grounds lighting provided through the building s electrical service Requirements apply to: New construction Alterations to existing buildings ( 9.1.2) For existing buildings, the lighting requirements are triggered only when 50% or more of the existing luminaires in a space are replaced ( 9.1.2) Reference: ( 9.1.1) User Manual pg Exceeding Standard ASHRAE Learning Institute

10 LIGHTING POWER TRADE-OFFS Separate requirements exist for exterior and interior lighting systems. Each system must comply separately with their respective requirements. Trade-offs between the two are not allowed. Trade-offs are only permitted with interior lighting power and within some parts of exterior building lighting power. 10 Exceeding Standard ASHRAE Learning Institute

11 INSTALLED INTERIOR LIGHTING POWER Include in calculations all power used by luminaire: Lamps Ballasts Transformers Control devices Reference: Lighting Control User Manual pg. 9-6 and Exceeding Standard ASHRAE Learning Institute

12 MULTIPLE SYSTEMS (Exception to 9.1.3) If controls are provided so that it is not possible to turn on both lighting systems at the same time, then it is only necessary to look at the lighting system with the greatest power when determining compliance with the Standard. 12 Exceeding Standard ASHRAE Learning Institute

13 LUMINAIRE WATTAGE RULES Incandescent and Tungsten-Halogen luminaires without permanently-installed ballasts Luminaires with permanently-installed ballasts Line-voltage track lighting Low-voltage track lighting Other 13 Exceeding Standard ASHRAE Learning Institute

14 LINE-VOLTAGE TRACK LIGHTING Must use a lighting power of at least 30 W/ft for all specified tracks. 14 Exceeding Standard ASHRAE Learning Institute

15 9.4 MANDATORY The lighting mandatory requirements apply with any of the approaches to compliance, including the Energy Cost Budget method: ECB ( 11). 15 Exceeding Standard ASHRAE Learning Institute

16 AUTOMATIC LIGHTING SHUTOFF Buildings larger than 5000 ft² (465 m²) must have an automatic control device that is capable of turning off lighting in all spaces without occupant intervention. Control options: Time schedule Sensing occupants in the space 16 Exceeding Standard ASHRAE Learning Institute

17 TIME-SCHEDULING DEVICES If time scheduling is used to provide automatic shutoff, the control must be able to accommodate separate schedules for each floor of the building or for each space larger than 25,000 ft² (2323 m²). Reference: Lighting Control User Manual pg Exceeding Standard ASHRAE Learning Institute

EXTERIOR LIGHTING CONTROL OPTIONS Photocells Seven-day electrically driven mechanical clocks with trippers, astronomical dial, and four-hour spring-wound storage Seven-day or calendar-year electronic

18 EXTERIOR LIGHTING CONTROL OPTIONS Photocells Seven-day electrically driven mechanical clocks with trippers, astronomical dial, and four-hour spring-wound storage Seven-day or calendar-year electronic programmable time switches with astronomical correction and battery backup Either of the timers above, with a photocell in place of astronomical correction 18 Exceeding Standard ASHRAE Learning Institute

19 MANDATORY PROVISIONS ADDITIONAL CONTROL Display / Accent Lighting Case Lighting Non-visual Lighting Demonstration Lighting Hotel / Motel Guest Room Lighting Task Lighting 19 Exceeding Standard ASHRAE Learning Institute

20 EXTERIOR BUILDING GROUNDS LIGHTING ( 9.4.4) 20 Exceeding Standard ASHRAE Learning Institute

21 EXTERIOR BUILDING LIGHTING POWER EXEMPT APPLICATIONS Lighting used for the following exterior applications is exempt when equipped with a control device independent of the control of the non-exempt lighting: 1. Specialized signal, directional & marker lighting for transportation; 2. Advertising signage or directional signage. 3. Integral to equipment or instrumentation & is installed by its manufacturer; 4. Theatrical purposes, including performance, stage, film production & video production; 5. Athletic playing areas; 6. Temporary lighting; 7. Industrial production, material handling, transportation sites and associated storage areas; 8. Theme elements in theme/amusement parks; and 9. Used to highlight features of public monuments and registered historic landmark structures or buildings 21 Exceeding Standard ASHRAE Learning Institute

22 EXTERIOR BUILDING LIGHTING POWER Table Lighting Power Densities for Building Exteriors 22 Exceeding Standard ASHRAE Learning Institute

23 INTERIOR LIGHTING POWER Building area method ( ) Space-by-space method ( ) 23 Exceeding Standard ASHRAE Learning Institute

24 9.5 BUILDING AREA METHOD COMPLIANCE PATH 24 Exceeding Standard ASHRAE Learning Institute

25 BUILDING AREA METHOD LPDs Table Lighting Power Densities Using the Building Area Method 25 Exceeding Standard ASHRAE Learning Institute

26 DOING THE CALCULATIONS Building type = office Lighting power density = 1.0 W/ft² Gross lighted area = 100 ft x 90 ft = 9,000 ft² Lighting power allowance = 1.0 x 9000 = 9,000 W 26 Exceeding Standard ASHRAE Learning Institute

27 INTERIOR LIGHTING TRADE-OFFS WITHIN A BUILDING Example 9-H Q. A 30,000 ft² building has retail on the ground level and offices on the second and third levels. Can the building area method be used for this building? 27 Exceeding Standard ASHRAE Learning Institute

28 INTERIOR LIGHTING TRADE-OFFS (cont.) Example 9-H Q. Continuing with the previous example, can the designer make trade-offs between interior lighting in the retail and office areas? In other words, if the lighting power density in the retail area is 1.6 W/ ft² and the lighting in the office areas is 0.9 W/ft², will the building comply with the requirements? 28 Exceeding Standard ASHRAE Learning Institute

29 INTERIOR LIGHTING TRADE-OFFS (cont.) Example 9-H Q. Suppose that the interior lighting systems for the retail and office portions of the building are included on the same electrical permit application. Is it possible to use the space-by-space method for the retail portion and the building area method for the office portion? 29 Exceeding Standard ASHRAE Learning Institute

30 9.6 ALTERNATE COMPLIANCE PATH: SPACE-BY-SPACE METHOD 30 Exceeding Standard ASHRAE Learning Institute

31 STRUCTURE OF THE TABLE Extracted from Table Common Space Types for Space-by-Space Method See complete Table on pp of Std Exceeding Standard ASHRAE Learning Institute

32 LIGHTING POWER ALLOWANCE, SPACE-BY-SPACE METHOD Example 9-J Q. Use the space-by-space method to determine the interior lighting power allowance for a three-story building with retail on the ground level and office space on levels two and three. The building measures 100 ft x 100 ft and has a total area of 30,000 ft². (This example is the same as the interior lighting trade-off example, except in this case, more detail is provided to enable the space-byspace calculations.) 32 Exceeding Standard ASHRAE Learning Institute

33 APPLYING THE PROCEDURE Identify the building types. Divide the gross lighted area of the building into each of the space types. 33 Exceeding Standard ASHRAE Learning Institute

34 ADDITIONAL INTERIOR LIGHTING POWER ( 9.6.2) Decorative Lighting Video Display Terminals (VDT) Retail Display Lighting 34 Exceeding Standard ASHRAE Learning Institute

35 DECORATIVE LIGHTING (Source: Advanced Lighting Guidelines: 2001 Edition) 35 Exceeding Standard ASHRAE Learning Institute

36 Addendum ai to (Part on) VISUAL DISPLAY TERMINALS 36 Exceeding Standard ASHRAE Learning Institute

37 RETAIL DISPLAY LIGHTING 37 Exceeding Standard ASHRAE Learning Institute

38 ANY QUESTIONS? Version prepared by: Architectural Energy Corp & 2007 Versions revised by: Joseph Deringer, AIA, LEED ap 38 Exceeding Standard ASHRAE Learning Institute

Manitoba Energy Code for Buildings 2011 Part 4: Lighting

Manitoba Energy Code for Buildings 2011 Part 4: Lighting Ian Naften, MIES, EIT Electrical Systems Engineer, Manitoba Hydro Education Chair, Illuminating Engineering Society of Manitoba September 17, 2014