SAMPLE DOCUMENT FOR USE BY LIGHTING DESIGNERS AND LIGHTING MAINTENANCE PROFESSIONALS
IT SHOULD BE NUMBERED AND EDITED AS NEEDED
Lighting design guide for large owner maintained
multi-wing facilities
7.0 Electrical
7.9 Lighting
A. Introduction
1. These standards and procedures apply to the selection and installation of lighting systems including luminaires, switching, specialized controls and maintainability.
2. Coordinate Lighting Site Plan and Landscape Plan to mitigate light pole and tree conflicts.
3. The italicized sections are guide specifications and a listing of approved products, which are periodically updated. The latest updates are available from OWNER. Copy the latest version of the guide specifications directly into the contract documents, modify as necessary and remove all non-applicable information.
Index:
Title Paragraph
Introduction A
General Design Criteria B
Specific Application Requirements C
Products D
Controls E
Approved Lighting Products F
B. General Design Criteria
1. Coordinate Lighting Site Plan and Landscape Plan to mitigate light pole and tree conflicts.
2. Lighting layouts must be coordinated with the architect so as to control brightness ratios, glare and contrast while using surface finishes with high sustained reflection factors.
3. The lighting design shall maximize the use of recessed 2’x 4’ and direct luminaires using two rows of F32T8/8xx 25 watt low mercury 40,000+ hr rated life lamps. We are finding that 25 watt lamps have almost equal light output to 32 watt lamps when lamp wall temperatures are above 90 degree (in all enclosed fixtures). Note: 25 watt lamps will not dim and don’t start well below 65º F. so use T5 for dimming and cold applications.
4. Use straight T8 lamps for at least 75% of all lighting energy consumption in office like spaces.
5. Use instant-start T8/T5ballasts for all spaces having less than 3 lamp starts per day. Use programmed-start T8/T5 ballasts for all spaces having more than 2 lamp starts per day. Ballast factors shall be between 0.85 and 1.2.
6. Fixed output T8 ballasts - use 2 lamp multi voltage ballasts that can also serve 1 lamp. Ballasts shall be >94% efficient. Use Advance Optanium, GE UltraMax or OWNER approved equal.
7. Dimming fluorescent ballasts for T5 and compact fluorescent lamps – use Advance Mark X, Mark VII or OWNER approved equal.
8. Compact fluorescent lamps shall be 80+ CRI, separable from ballast. Typically lamps should be 3500K. Use amalgam “triple tube” rapid start compact fluorescent lamps from 14 to 42 watts. Higher wattage CF lamps will require OWNER approval.
9. Do not use lamps that are over 48 inches long, incandescent, mercury vapor, T12, U-Bend and lamps less than 13 watts (except for “night lights”, auditorium, pathway, step lighting and approved special purposes).
10. Generally design for the prescribed light levels using realistic maintenance factors based on products actually used. For instance, there is an 8% difference in maintained lumens between 75 CRI and 85 CRI lamps. T8 luminaires may not be cleaned until lamps are replaced at 40,000 to 48,000 hours so use realistic dirt depreciation factors.
Different light levels may be required to meet a special visual task or where required by the standards of a fund granting agency (i.e. N.I.H., N.S.F., etc.). OWNER must approve different light levels. Refer to IES Handbook and ANSI/IESNA RP-1 for additional design criteria.
a. Average Maintained Footcandles at the Work Surface:
70 Laboratories
50 Paperwork intensive offices, shops, kitchens, library study areas, etc.
42 Computer oriented offices, classroom/auditoriums, and general-purpose computer work stations/labs. Consider two-level switching or dimming for mixed use of computers and paperwork.
30 Auditoriums, conference rooms
20 Restrooms, mechanical and electrical rooms, locker rooms, etc.
b. Minimum Maintained Footcandles:
15 Corridors, passageways and stairways adjacent to spaces with more than 50 footcandles
10 Corridors, passageways, stairways, storerooms, etc.
2.5 Covered parking garages
1 Open parking
1 Roadways (use IES recommendation to suit security level)
1/2 Walkways (use IES recommendation to suit security level)
11. Coordinate with the architect to insure that the lighting system can be maintained. When practical, mount luminaires below 10 feet. Special accommodations must be made for luminaires mounted above 17 feet and in difficult access and hazardous locations by providing chain/cable-operated disconnecting hangers, winches, catwalks, overhead access, mechanized lifts, pathways for lifts, remote ballasts, etc. OWNER design team must approve all special accommodations.
12. Provide ground fault protection on exterior lighting circuits.
13. Outside lighting standards are in flux at this time. Our preference is to use fluorescent lighting but there may be applications where LED or induction lamps may also be considered. All non-conventional designs must be approved by OWNER design team.
D. Specific Application Requirements
1. Emergency Lighting
a. Locate EXIT signs in accordance with prevailing codes.
b. The housing and faceplate shall be white in color (other colors must be approved). EXIT signs shall comply with EPA EnergyStar Specifications at the end of the 5-year warranty period.
c. Provide emergency pathway lighting in mechanical and electrical rooms. Position luminaires over equipment control stations, exposed moving equipment and pathways.
d. Emergency pathway and exit lighting for safe evacuation from locations with dangerous equipment may be desired even though not required due to low occupancy load.
e. Emergency Circuits: EXIT signs and pathway lighting shall be connected to the life safety emergency power service.
f. Luminaries in stairways shall be 4’ luminaires mounted at 8’ above the landing on the sidewall at the top of each flight of stairs. OWNER design team must approve all variances.
2. Roadway and Pathway Lighting
a. Streets, parking lots, sidewalks and pathways will generally be illuminated with pole mounted, LED lighting meeting Air Force UFC-3-350-01 (ETL-10-18).
b. Use optics designed to prevent “blinding” of pedestrians and drivers.
d. Street lighting shall be served from existing electrical circuits wherever possible. Control new electrical circuits from existing master photo controlled circuits or provide photoelectric control.
e. Protect all street and walkway luminaires with waterproof in-line fuse holders located in each pole base. The fuse shall be on the line side of the ballast. Fuse holders shall be Buss Tron HEB, ESNA or equal.
f. Provide grounding terminals in each pole base or luminaire.
g. Streetlight luminaires shall be labeled and identified.
4. Laboratories
Luminaires shall provide diffuse lighting, shall not have upward facing surfaces that collect dirt and shall be easy to clean. Use recessed or surface mounted luminaires with clear acrylic lenses. Generally, luminaires with a perforated indirect component are unacceptable. Parabolic luminaires are unacceptable.
5. Safety Hazard AreasProvide battery lighting units for lighting during the brief outage of transfer switch operation. Not to be used as substitute for regular pathway lighting requirements.
E. Products
1. Luminaries
a. All luminaires shall be of high quality construction, designed for long life and easy maintenance.
b. The majority of luminaries must be T8. Single row T5/T5HO will only be allowed where architecturally necessary and approved by OWNER design team. Multiple row T5/HO is allowed for high bay applications
c. Average luminaire efficiency shall be greater than 75% for all lighting projects. Use white reflecting surfaces with a total reflectance greater than 88% for most interior lighting. Anodized aluminum reflecting surfaces with a total reflectance greater than 93% may be used for high bay and outdoor applications. Clear refracting lenses may also be used in certain applications.
d. Luminaries may only be cleaned every five to six years and should be selected to minimize dirt accumulation. Fixtures with an indirect lighting component (“up light”) must be capped in dirty areas with a clear dust cover to minimize dirt collection and maintenance.
e. Lenses shall be designed to open easily, hang open from the luminaire and be removed from the luminaire all without the use of tools. Weather/water tight fixtures may be an exception.
f. Flat lenses shall be mounted in frames designed for replacement with lenses up to 0.38” thick. Clear plastic lenses shall be 0.125" minimum thickness virgin acrylic. Use pattern 12 lenses where a diffuse light source is desired. Pattern 15 lenses are preferred to minimize imaging on video monitors. Areas intended for exclusive computer use may require pattern 19 lenses.
g. Parabolic louvers will not generally be allowed and all use must be approved by OWNER design team.
h. Luminaries with more than 2 lamps will not generally be allowed except for bi level switching and must be approved by OWNER design team.
i. Compact fluorescent cans must be > 6” in diameter for 30+ watts and > 8” for 40+ watts.
j. Fluorescent lamp sockets shall be selected for high frequency ballast use. Typically provide knife-edge lamp sockets. Provide Vossloh rotary lock sockets or similar easy to use positive locking sockets for lamps that can fall out of the luminaire if the socket connection fails (such as strip and industrial luminaires).
k. All luminaires shall have seismic supports to the building structure per UBC.
l. In fire rated ceilings, the luminaire installation must comply with the UL listing requirements of the ceiling.
m. If more than one lamp style or wattage can fit in a lamp socket, clearly label the socket with identification of the intended lamp.
n. Provide quick disconnect devices at all ballasts.
o. Provide all street and walkway luminaires with waterproof in-line fuses located in each pole base. The fuse shall be on the line side of the ballast. Fuse holders shall be Buss Tron HEB, ESNA or equal.
2. Exterior LuminariesUse fluorescent lighting whenever possible. Building entrance, landscape and courtyard luminaires shall be suitable for the location and shall have automatic daylight control. Use enclosed T8, T5HO, amalgam compact fluorescent up to 70 watt or 40 watt PLs. Luminaries shall be heavy-duty cast non-ferrous metal construction designed to withstand anticipated weather conditions. Luminaries of different construction may be on Approved Lighting Products list.
E. Controls
1. Circuiting requirements?
2. Control all interior lighting with local switching. Do not use standard circuit breakers as light switches.
3. Lighting control panels and relays for difficult access spaces such labs and procedure rooms shall be readily accessible, preferably in hallway outside of space.
4. Vacancy sensors, traditional occupancy sensors and photo cells are generally to be used as needed and required. Master lighting control systems are not to be used but pre-wiring for future control should be discussed with OWNER design team.
a. All lighting motion controls shall switch loads when supply output voltage is approximately 0.
b. Vacancy Sensors (Sensors that look for body heat, not motion) that turn OFF lights after a period of no occupancy. They do NOT automatically turn lights ON.) shall be mounted in a typical light switch location or operate in series with an ON/OFF switch.
c. Occupancy sensors shall be used to turn lights ON/OFF in large spaces such as hangers and warehouses.
d. Vacancy and occupancy sensors shall fail ON.
e. Vacancy and occupancy sensors shall have time delay adjustments of 10 to 30 minutes before turning lights OFF. Choose delay settings to minimize ON time while limiting the number of starts to less than 12 per day. Provide a statement of occupancy sensor adjustments in the construction documents. When in doubt, use10 minutes for meeting spaces such as classrooms and 30 minutes for other applications.
f. Use infrared vacancy sensors when appropriate, sonic detectors when necessary for partitioned spaces and dual-technology sensors for meeting spaces, such as auditoriums, where large motions are required to turn lights ON and seated reading or writing will keep lights ON.
g. Large common office spaces might use zoned vacancy or dual technology occupancy control or time of day control with a two hour override feature.
h. Occupancy sensors may be used to reduce pathway and warehouse light levels but “stumble lighting” should be maintained ON. This may be coordinated with emergency lighting requirements.
5. Daylight zones should typically have independent dual switching. One switch controls all lamps nearest windows and some of the lamps in each luminaire further away from the windows (Consider turning OFF additional lamps nearest the North wall of rooms with East or West facing windows with this same switch). A second switch controls all remaining lamps in the daylight zone.
6. Automatic controllers and time clocks shall maintain time and schedule through a 72-hour power failure.
7. Locate photocells in protected accessible areas.
F. Approved Lighting Products:
The Owner must control the number of types, quality and value of products used. Although 4’ fluorescent lamps are to be used for most lighting, additional types of lighting may be necessary to enhance architectural character and to serve special user needs. The Owner has pre-approved a list of lighting products to meet most lighting needs while minimizing life cycle costs.
This is an evolving list of products that are typically stocked by the Owner or can be maintained with stocked items. Products are selected to serve a broad range of applications. The Owner must approve unlisted products. Equal products may be added to the list while better products may replace listed products. We anticipate that some projects will need categories of lighting products that are not pre-approved, however, if a category of product is pre-approved, no exceptions will generally be approved.
APPROVED LIGHTING PRODUCT LIST
FLUORESCENT LAMPS
· FP28T5/835 – This lamp is only to be used for 4 foot long dimming and in cold locations
· FP54T5/835 49 watt
· TL5C (22, 40 & 55)/8xx
· FT40W/2G11/RS/xx
· CFM42W/GX24q/xx
· CFM32W/GX24q/xx
· CFM26W/GX24q/xx
· CFM18W/GX24q/xx
· CFQ26W/G24q/xx
· CFQ13W/G24q/xx
· CFT7WG23/xx
· F32T8 25 watt, 40K+ hour lamp life, 8xx color
· F25T8 long life 8xxx color
· F17T8 long life 8xxx color
INCANDESCENT LAMPS - Use of incandescent lamps is not generally acceptable.
· MR-16 and quartz halogen lamps with infrared reflective coatings may be approved on a case by case basis for special applications.
LED lighting is becoming viable and cost effective. We will consider all LED proposals but all must be approved by OWNER.