Link to full slide deck of IECC Commercial Lighting and Lighting Controls presentation

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Codes and Standards Initiative ‐ Sponsors

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Who is Mass Save®?

Mass Save® is an initiative sponsored by Massachusetts’ gas and electric utilities and energy efficiency service providers, including Columbia Gas of Massachusetts, The Berkshire Gas Company, Cape Light Compact, Eversource Energy, National Grid, Liberty Utilities, and Unitil. The Sponsors of Mass Save work closely with the Massachusetts Department of Energy Resources to provide a wide range of services, incentives, trainings, and information promoting energy efficiency that help residents and businesses manage energy use and related costs.

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Residential New Construction Offers

Low-Rise New Construction• Performance Path – based upon a % improvement over

the MA baseline• Prescriptive Path – incentives for measures beyond MA

baseline High-Rise New Construction

• Incentives based upon actual measures

Please visit www.MassSave.com for the details on all available incentives.

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Commercial New Construction Offers

Incentives for efficiency levels beyond code:• Whole building incentives• System incentives including

• Air Compressors• Chillers• Lighting and Lighting Controls• Gas-Fired Heating Equipment• Variable Speed Drives• Custom Measures• And more

We also offer incentives and rebates for existing buildings as well. Please visit www.MassSave.com for the details.

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Massachusetts Energy Code Technical Support Initiative Commercial Energy Code –Lighting, Lighting Control & Electrical Provisions

These materials © 2014 Conservation Services Group, Inc. all rights reserved. - Unauthorized access or use is strictly prohibited.

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AIA Continuing Education

CLEAResult is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available on request.

This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

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Disclosure

These trainings are being offered through the support of Mass Save® and in cooperation with the Massachusetts Board of Building Regulations and Standards (BBRS). The Energy Code Technical Support staff, consisting of CLEAResult and other contractors, are not code officials, and the information provided through the program is not a formal interpretation of the code. Your local building code official is responsible for the enforcement of the code and the Massachusetts BBRS is the governing body responsible for interpretations of the code.

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Mass Save®

Energy Code Technical Support

Project Specific Code Assistance MA code officials Design professionals Contractors Sub contractors Material suppliers

Toll-free energy code support855-757-9717

Phone assistanceOffice visits

Project site visits

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Learning Objectives

To become familiar with the electric and lighting provisions of the 2012 Massachusetts Energy Conservation Code

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Agenda

Introductions Scope and Application Interior Lighting Power Density Lighting Controls

Exterior Lighting Lighting Power Density Lighting Controls

Additional Efficiency Packages Compliance

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Energy Savings

0%

15%

30%

45%

2006 2009 2012 2015

35 –40%

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Code Reference Materials

13

Scope and Application

14

Commercial Compliance

Commercial Compliance

Prescriptive

IECC

Scope and application

Envelope HVAC Lighting

Interior Exterior Controls

Service Water

HeatingAlternative

Options

ASHRAE

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R101.4.6 - Mixed Occupancy

If both residential and commercial uses are present, each occupancy shall be separately considered and meet the applicable IECC provisions Residential = 2012 IECC Residential Commercial = 2012 IECC Commercial

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2012 IECC versus 2010 ASHRAE 90.1

Higher (less stringent) lighting power density

Lighting controls required for different spaces

Manual controls allowed for daylight zones

No parking garage lighting controls

No room geometry adjustment allowed

Bi-level switching required

Lower (more stringent) lighting power density

Lighting controls required for different spaces

Multilevel lighting controls always required for daylight zones

Parking garage lighting controls

Room geometry adjustment allowed for spaces

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Additional Efficiency Package Options

Buildings following the prescriptive path shall comply with at least one of the following:

1. Efficient HVAC Performance – Minimum Efficiency Requirements for Mechanical Equipment – Tables C406.2 (1-7)

2. Efficient Lighting Systems – Reduced LPD per Table C406.33. On-Site Renewable Energy Systems – Provide for 1.75 Btu or 0.50

Watts per ft2 of Conditioned Floor Area4. For onsite use of biomass fuel, provided not less than 65 percent of

the energy used within the building for space and service water heating using sealed combustion mechanical equipment rated at a minimum of 85 AFUE. The biomass shall meet the eligible fuel and emission criteria under M.C.L. c. 25A. § 11 F (Massachusetts renewable energy portfolio standard).

C406.1 NEW!

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Commercial Compliance Methods

IECC 2012 & Massachusetts Amendments Prescriptive Checklists Software Based Compliance; COMcheck

ASHRAE 90.1 Compliance Building Performance Methodology: “Energy Cost Budget

Method” (Section11)

C102.1.1 Compliance with a code official approved “above code” program/performance protocol

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Stretch Code –Commercial Compliance

Stretch Code Performance

Option

Stretch Code Prescriptive Option

Base Code

New Construction(0- 4,999 sq. ft)

Not Subject to Stretch Code 2012 IECC plus MA amendments

New Construction(5,000-100,000 sq ft)

20% below 90.1-2007 Section 501.1.4 Prescriptive Path

Not available

New Construction (above 100,000 sq ft)

20% below 90.1-2007 Not available Not available

Supermarket, Labs Warehouse(<40,000 sq ft)

Not Subject to Stretch Code 2012 IECC plus MA amendments

Supermarket, Labs Warehouse(>39,999 sq ft)


Additions (>30% new floor area added to buildings

>100,000 sq ft)


Alterations and Repairs Not Subject to Stretch Code 2012 IECC plus MA amendments

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Definitions: “Residential & Commercial Buildings”

Residential Buildings: Detached One and Two-

Family Dwellings Townhouses Residential Buildings 3 Stories

or Less in Height

Commercial Buildings: All Buildings not Defined as

“Residential” Commercial Industrial Residential 4 Stories or

More in Height

Source: Shutterstock

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Additions

Additions alone shall comply with the code (additions include any building systems added)

Or; the entire building including the addition shall comply

Exemption Storm windows installed over existing fenestrations

C101.4.3

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Alterations, Renovations & Repairs

Alterations, Renovations & Repairs Must conform “As they relate to new construction” Renovated, or altered components, portions, and

systems must comply Repairs that relate to new construction

Exceptions Unaltered portions of an existing building or

building system Replacing less than 50% of the light fixtures in a

space Replacing the lamps and ballasts in existing light

fixtures without increasing energy use

C101.4.3

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Change in Occupancy or Use

If change in occupancy or use results in increased demand for fossil fuels or electricity, the space must comply with codeWhere the use in a space changes from one use in Table C405.5.2(1) or (2) to another use in Table C405.5.2(1) of (2), the installed lighting wattage shall comply with Section C405.5

>

C101.4.4

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Change in Space Conditioning

Unconditioned space that is converted to conditioned space must comply with code; including lighting

>

C101.4.5

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Low Energy Buildings

Exempt from building envelope provisions: Buildings with a design

rate of energy usage less than 3.4 Btu/h (or 1.0 watt) per ft2 for space heating Buildings that contain no

conditioned spaceNo commercial buildings are exempt from lighting and service water heating provisions

C102.1

Source: bridgelux

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Alternate Materials & Methods

“The Energy Conservation Code does not intend to prevent the use of alternate material and methods provided such materials and methods have been approved by code officials as meeting the intent of the code.”

C102.1

Source: Hotel Galéria Spirit

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Building Electrical and Lighting Provisions

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Lighting System Impact

Energy for Lighting in C&I Buildings• Accounts for Approximately 30% of Energy Use in

Commercial Buildings

Heating, Cooling

Non-Regulated

Lighting

Hot Water

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Lighting System Scope

Applies to the design of: • First installed lighting systems• Altered or repaired systems that

replace 50% or more of the luminaires

• Alterations that increase the lighting power density in the space

Exempt: Lighting within dwelling units provided 75% or More of the Hard-Wired Fixtures use High Efficacy Lamps (Fluorescent or LED)

Source: Mark A Steele Photography Inc.

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Intent of Lighting Requirements

Reduce hours of operation with lighting control requirements: Automatic Manual

Reduce lighting power density: 2012 Requirements are

more strict & include exterior lighting

Incorporate DaylightingCredit: Energy Resource Solutions

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Interior Lighting Power

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IECC 2012 –Lighting Mandates

For lighting alterations/retrofits <50%: only the altered lighting needs to be brought up to code.However, IF this change does not increase the lighting power, THEN there is no need to bring anything up to code.

When >50% or more of the luminaires in a space are replaced, that entire space or building must meet IECC 2012 code LPD requirements.

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Lighting power allowance (LPA) – Maximum allowed lighting power density (LPD)

LPD – Lighting Total Watts/Ft2 of Area Two paths: Building Area Space-by-Space

Fixture Rated Wattage X Qty ÷ Area (Ft2)

C405.5

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Example Area & Space Types

Table - Interior Lighting Power Allowance Tables

BUILDING AREA METHOD

SPACE‐BY‐SPACE METHOD

Building Area Type LPD Common Space Types LPDAutomotive Facility 0.9 Automotive Service 0.7

Convention center 1.2Convention Exhibit Space 1.5

Courthouse 1.2 Judge Chambers 1.3

Gymnasium 1.1Gymnasium Fitness Area 0.9

Office 0.9 Office ‐ Enclosed 1.1

Parking Garage 0.3Parking Garage ‐Garage Area 0.2

Retail 1.4 Retail Sales Area 1.6

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Lighting Power Allowance

Calculate the total interior lighting power (Watts) / total floor area of each building area type = Lighting Power Density (LPD)

LPD must be equal to or less than the LPD for the building area type listed in the code table

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Locker Room

Office

12” exterior walls (typical)

8” partition

200 ft

75 ft

125 ft

from interiorsurface of envelope walls

from center of partition walls

Measuring Interior Area

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Locker Room @ 0.8 W/ft2

Open Office @ 1.0 W/ft2

200 ft

75 ft 125 ft

7,500 ft2 x 1.0 W/ft2 = 7,500 W

12,500 ft2

x 0.8 W/ft2

= 10,000 W

Total Allowed Interior Lighting Power = 17,500 W

Allowed Lighting Power

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Total connected interior lighting power includes: Fluorescent fixture rated

wattage Screw-in socket labeled

max wattage Low voltage lighting

transformer rating Track – 30 Watts/Ft or

circuit breaker ratingSource: Glumac

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Total connected interior lighting power; including all interior lighting equipment, except:

• Sports Lighting (Professional/TV)• Sleeping Units (hotels, etc.)• Emergency (only) Lighting• Special Needs Lighting• Other Special Categories

C405.5

Source: Lamar LightingSource: ALG online

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Lighting Power Density

What is the wattage of a fluorescent fixture?

Source: OSRAM SYLVANIA

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Lighting Power Density

What is the wattage of a fluorescent fixture?• Ballast or Fixture Manufacturers Data for the Lamp

Ballast Combination

Line Voltage: 120V AC +/- 10%LampsType # AMPSF32T8/ES 2 45 0.38F32T8/ES 1 27 0.23F32T8 2 48 0.41F32T8 1 30 0.26

TRIADB2321120EL

INPUT WATTS

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Case Study: MacColl YMCA

Code LPD – 1.0 W/SF Designed LPD – 0.78

W/SF Reduction – 22% Projected annual

energy savings -$4,224

Source: Ryan Construction

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Review

Interior lighting power density• Calculating the actual power density• Calculating the interior power allowance

Source: a•light

Incentive Opportunity: Incentives available for exceeding code LPD

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Optional Lighting Techniques

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Efficient Lighting Sources & Techniques

High efficacy lamps Electronic and other

efficient ballasts Efficient lighting

fixtures Focus on high quality

lighting design Use “smart” lighting

layoutsSource: Golub Corp

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High Performance “Super” T8 Fluorescent Systems

Improved ballast and T8 lamp

20% improvement in system efficacy

Low and full wattage versions

Extended lamp life up to 50,000 hours

Newest versions promise 100,000 hour life

Adds 0%-10 % to system cost compared to typical instant-start T8

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T8/T5?

The “T” represents lamp shape–tubular. The number following represents lamp diameter in

eighths of an inch. A T5 has a diameter of 5/8”. A T5 has miniature bi-pin bases while T8 and T12

lamps use medium bi-pin bases.

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LED – Solid State Lighting

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Advantages of LED Lighting

Energy efficient; 60 >100 L/W Directional; light where its

needed long lifetime; up to 50,000 hours

@ 70% lumen maintenance Instant on; no warm-up period Dimmable; stepped or

continuous with compatible driver & dimming systems

Start in all temperatures; outdoor & cold storage applications

Very good color rendering (80+ CRI)

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Current LED Lighting Applications

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Install Efficient Fixtures

Efficiency is not just lamps and ballasts Fixtures with advanced photometric design and

premium reflective surfaces offer improved efficiency

Premium efficiency fixtures often allow the installation of fewer fixtures and/or fixtures with fewer lamps

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Install Efficient Fixtures

Efficiency Ranges

Recessed Troffers 60% - 85% Overall Recessed Parabolic 45% - 75% Overall Recessed Indirect 50% - 80% Overall Pendant Indirect & D/I 70% - 95% Overall Recessed CFL 35% - 65% Overall

Incentive Opportunity: Incentives available for exceeding code LPD

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Interior lighting Controls

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Manual Interior Lighting Controls

Independent manual controls are required for each enclosed space

Controls must be within the space or provided with an on/off indicator

Exceptions Security of emergency areas Stairways and corridors (means of egress)

C405.2.1

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Manual or Automatic Lighting Reduction Controls

Each space that is required to have manual controls, must also include controls to reduce lighting load by at least 50%: Manual or auto-dimming Or; Bi-level switching Or; Dual switching of alternate rows of luminaires Or; Switching each luminaire or each lamp

C405.2.1.2

Source: Leviton Lighting Management Solutions

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Manual or Automatic Lighting Reduction Controls - Exceptions

Exceptions apply Spaces with occupancy sensing Areas with one fixture Spaces < 0.6 W/ft2

Corridors; restrooms; lobbies

Source: Lamar Lighting

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Additional Lighting Controls

Each space that is required to have manual controls, must also include:

• Automatic timer systems with override• And/or; occupancy/vacancy sensors• And/or; daylight zone controls

C405.2.2

Source: WattStopper

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Interior Lighting Controls

“Simple” Guide for Compliance: Private offices, conference rooms, classrooms: Vacancy sensor

• Daylit? – Dimming ballasts & manual or auto dimmer• No Daylight? Multi-level lighting exception due to vacancy sensor

Open office areas: Timer or occupancy sensor

• Daylit Zones? - Dimming ballasts & manual or auto dimmer

Break Rooms, janitor closets, restrooms Occupancy or vacancy sensor

General & public areas: Daylit? - Dimming ballasts, manual/auto dimmer & timer No Daylight? - timer

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Occupancy & Vacancy Controls

Occupancy sensors: • Turns lights on upon sensing occupancy • Turn lights off when space is vacated• Best for open spaces and/or spaces lacking ambient light

Vacancy sensors (occupancy sensors with manual “ON”):

• Turn lights off when space is vacated• Lights must be turned on manually• Best for private offices with some ambient light

What’s the Difference?

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Network Lighting Controls

Network Lighting Controls incentive: NLC exceeds IECC 2012 code lighting control

requirements. NLC goals are to obtain substantial lighting kWh savings by using the full capabilities of digitally programmed and networked lighting controls and sensors. • Delivers refined lighting control management • Zones can be easily adjusted and redefined by owner or

occupant• Includes graphic dashboard showing locations and savings• Can tie into HVAC system & BMS

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Project Qualifications: >25,000 sq/ft or greater New construction, major renovation and retrofit

projects are eligible Pre-Qualified Lighting Control Systems required. Controls system must achieve

40% kWh savings below IECC 2012 (ComCheck)

Requires the involvement of qualified lighting or engineering professional -PE., Lighting Certified LC or IALD Specifiers to participate


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NBI has published a Technical Application Guide on Network Lighting Controls at:http://newbuildings.org/sites/default/files/LLLC_ZNE_TAG.pdf

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Daylighting and Envelope Requirements

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Daylight Zone Controls

Daylight Zones: • Under skylights –

equal to the size of the skylight plus the floor-to-ceiling heightOr; the dimension to a

partitionOr; ½ the distance to

another fenestration Source: Daylighting Pattern Guide

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Daylight Zones: Vertical glazing – area adjacent to the glazing and: Extending into the space

15’ or to a partition Glazing width plus 2’ on

either side Or; ½ the distance to

another fenestration Credit: NREL - Joe Ryan

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Daylighting Zone

Daylight zone adjacent to fenestration in a wall

Credit: IECC

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Daylighting Zone

Daylight zone under a rooftop monitor

Credit: IECC

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Daylighting Zone

Daylight zone under a sloped rooftop monitor

Credit: IECC

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Daylighting Zone

Daylight zone under a roof fenestration assembly

Credit: IECC

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Daylight “zones” must have their own (manual or automatic) control

• Each zone – maximum 2,500 ft2

• Exception: enclosed areas with two or fewer light fixtures• Manual or automatic• Continuous or stepped (50-70% + 35%)

C405.2.2.3

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Multi-Level & Daylight Zone Controls

Daylight “Zones” in areas with multi-level switching:• General lighting must be daylight responsive• Must be capable of dimming to minimum of 35% of total lighting load• Continuous or stepped

C405.2.2.3.3

Source: RP Leslie, R Raghavan, O Howlettand C Eaton, 2005. “The potential of simplified concepts for daylight harvesting

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Multi-Level Ballasts

Continuous 5%>100%

C405.2.2.3.3

Stepped Bi-Level 50%>100%

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Example: Classroom

Application:• 28’ X 30’ windowed

classroom with 10’ ceiling• Windows face north

Lighting:• Indirect/direct T8 pendant

with 0-10VDC dimming ballasts for general lighting

• Whiteboard is illuminated by compact fluorescent wall washers with standard electronic ballasts

Source: Joe Ryan/NREL

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Example: Classroom

Source: ALG online

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Example: Classroom

Source: ALG online

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Vertical Fenestrations Maximum Area

Vertical fenestrations limited to 30% of total above grade wall area

Previous code the limit was 40%

C402.3.1

Source: originalgreen.org

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Vertical FenestrationsMaximum Area with Daylight Controls

Vertical fenestration allowance increases to 40% of total above grade wall area

• If; at least 50% of floor area is within a daylit zone• And; automatic daylight controls are installed• And; visible light transmittance is ≥ 1.1 times the SHGC

C402.3.1.1

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Skylights - Maximum Area

Skylights limited to 3% of gross roof area Or; limited to 5% if automatic daylight controls are

installed below skylights

C402.3.1

Source: Daylighting Pattern Guide

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Skylights - Minimum Area

Required; minimum skylight area for some spaces:• Enclosed spaces greater than 10,000 ft2

• Ceiling heights greater than 15’• Offices, lobbies, atriums, concourse, corridors, storage,

gyms, convention centers, auto service, manufacturing, non-refrigerated warehouses, retail, distribution, transportation, workshops

• Daylight zone ≥ 50% of the floor area• % of skylight area to daylight zone ≥ 3%• Or; provide a minimum aperture of 1%

C402.3.2 NEW

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Skylights - Minimum Area

Exceptions:• LPDs less than 0.5 W/ft2

• Areas where objects block the daylight• Areas with daylighting monitors

C402.3.2 NEW

Source: Advanced Lighting Guidelines

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Lighting Controls Under Skylights

All lighting in Daylight Zones must be controlled by multi-level lighting controls as specified in the lighting section C405.2.2.3.3

C402.3.2.1 NEW

NOTE: This is only applicable when skylights are required per section 402.3.2


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Source: BMG

85

Auto Daylighting Controls

OS OS OS OS OS

OS OS

OS

Aut

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aylig

htin

g C

ontro

ls

Auto Daylighting Controls

OS

OS

S

S

Source: BMG

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Exterior Lighting

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Exterior Lighting Controls

Exterior lighting designated for dusk to dawn operation Automatic photocell control Or; Automatic “astronomical”

timer with a minimum 10-hour power back-up

Other exterior lighting Automatic photocell control &

timer Or; automatic “astronomical”

timer with a minimum 10-hour power back-up

C405.2.4

Source: California Lighting Technology Center

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Exterior Lighting Power

All Lamps Greater Than 100 Watts Must Have an Efficacy Rating of 60 Lumens per Watt or Greater

Exterior Lighting Power Allowance is Calculated Utilizing Exterior Table Chart LPD Assigned by Area Zone & Type Exceptions for Sports, Industrial, Temporary Lighting, and

other Specialized Lighting

C405.6

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Exterior Lighting Zones

1. Developed areas of national parks, state parks, forest land, and rural areas

2. Areas predominantly consisting of residential zoning, neighborhood business districts, light industrial with limited nighttime use and residential mixed use areas

3. All other areas 4. High-activity commercial districts in major

metropolitan areas as designated by the local land use planning authority

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INDIVIDUAL LIGHTING POWER ALLOWANCES FOR BUILDING EXTERIORS(Partial)

Zone 1 Zone 2 Zone 3 Zone 4

Parking areas and drives 0.04 W/ft2 0.06 W/ft2 0.10 W/ft2 0.13 W/ft2

Walkways less than10 feet wide

Walkways 10 feet wideor greater, plaza areasspecial feature areas

Stairways 0.75 W/ft2 1.0 W/ft2 1.0 W/ft2 1.0 W/ft2

Pedestrian tunnels 0.15 W/ft2 0.15 W/ft2 0.2 W/ft2 0.3 W/ft2

20 W/linear foot 20 W/linear foot 30 W/linear foot 30 W/linear footof door width of door width of door width of door width

20 W/linear foot 20 W/linear foot 20 W/linear foot 20 W/linear footof door width of door width of door width of door width

Entry canopies 0.25 W/ft2 0.25 W/ft2 0.4 W/ft2 0.4 W/ft2

Free-standing andattached

Open areas (includingvehicle sales lots)

Street frontage forvehicle sales lots in

addition to "open area"allowance No allowance 10 W/linear foot 10 W/linear foot 30 W/linear foot

Outdoor Sales

0.25 W/ft2 0.25 W/ft2 0.5 W/ft2 0.7 W/ft2

Sales Canopies

0.6 W/ft2 0.6 W/ft2 0.8 W/ft2 1.0 W/ft2

0.2 W/ft2

Building Entrances and Exits

Main entries

Other doors

Tradable Surfaces (Lighting power densities for uncovered parking areas, building grounds, building entrances and exits, canopies and overhangs and outdoor sales areas may be traded.)

Uncovered Parking Areas

Building Grounds

0.7 W/linear foot 0.7 W/linear foot 0.8 W/linear foot 1.0 W/linear foot

0.14 W/ft2 0.14 W/ft2 0.16 W/ft2

C405.6.2

91


Non-tradable uses include:• Building facades• Automated teller machines and night depositories• Entrances and gatehouse inspection stations at guarded

facilities• Loading areas for law enforcement, fire, ambulance, and

other emergency vehicles• Drive-up windows/doors• Parking near 24-hour retail entrances

92

Exterior Lighting Exceptions

93

Review

Daylighting and envelope requirements Exterior Lighting Lighting Power Lighting Controls


94

System Commissioning

95

Lighting System Commissioning

Automatic lighting controls functional testing: Hardware & Software Construction documents designate agent Code official may require 3rd party agent

96

Daylighting Control Commissioning Example

Source: Energy Center of Wisconsin; Commissioning for Optimal Savings from Daylight Controls (2013)

97

Additional Efficiency Package

Options:1. Efficient HVAC2. Efficient Lighting; LPA Table

C406.3.1*3. On-Site Renewable Energy

*About 10% lower LPA than base code

98

Lighting Options Package

Table 406.3 Interior Lighting Power allowances: Building Area Method

Building Area Type LPD (w/ft2)Automotive facility 0.82

Convention Center 1.08

Courthouse 1.05

Dining: Bar lounge/leisure 0.99

Dining: Cafeteria/fast food 0.90

Dining: Family 0.89

Dormitory 0.61

Exercise Center 0.88

Fire Station 0.71

Gymnasium 1.0

Health Care Clinic 0.87

Hospital 1.10

Library 1.18

Manufacturing Facility 1.11

Hotel/Motel 0.88

Table 406.3 Interior Lighting Power allowances: Building Area Method cont.

Building Area Type LPD (w/ft2)

Motion Picture Theatre .83

Multifamily 0.60

Museum 1.06

Office 0.90/.85Performing Arts Theatre 1.39

Police Station .96

Post Office 0.87

Religious Building 1.05

Retail 1.4/1.3School/University 0.99

Sports Arena .78

Town Hall 0.92

Transportation 0.77

Warehouse 0.6

Workshop 1.2

100

Electrical Systems

Electrical Metering• Dwelling Units Separate Meters Required on Each Dwelling

Unit

Unit One

UnitTwo

101

Compliance

102

Compliance Issues –All Commercial Building Types

Lighting

• Mandatory manual & automatic controls critical to energy savings

• Lighting Power Density (LPD) calculations often done incorrectly

• Daylit areas to be controlled separately

• Daylight/Skylight provisions in both envelope and electrical sections

• When COMcheck is used for compliance, fixture wattage and building or space area is often improperly entered

103

ASHRAE 90.1 Energy Cost Budget Method

Energy cost budget method Compare a proposed design with

“code compliant” design Demonstrate proposed design is

at least as energy efficient as the code compliant design

Approach Allows great flexibilitybut Requires considerable effort

Still must meet all mandatory lighting, HVAC, and service water heating requirements

104

Commercial Energy Code Software

COMcheck Compiles user inputs Calculates allowed envelope trade-offs Provides printable organized output

Does not prove compliance Accuracy of inputs is key

105

Project Information- General

106

Documentation

107

Interior Lighting

108

Exterior Lighting

109

Limitations of COMcheck

No trade-offs between envelope, HVAC and lighting systems

Not performance based software

Can only use for buildings up to 40% WWR if demonstrating compliance with the IECC

110

Electrical – Key Points

Both manual and automatic lighting control requirements

Use “rated” lamp/ballast wattage to calculate LPD

LPD approach for exterior lighting

Daylit areas need to be controlled separately

Lighting controls must be included in system commissioning

111

Recommended Compliance Procedure

Obtain full project documentation Full set of plans and specifications including:

• Lighting schedule COMcheck or other code compliance

calculations/documentation License numbers and/or other documentation of design

professionals Review plans for code compliance There should be enough detail in project documents to

verify code compliant design Compliance must follow MA Code or 90.1 Building Energy

Cost Methodology & “Mandatory” prescriptive provisions of MA Code

112

Energy efficiency features that should be on the plans for the Lighting System• Lighting fixture schedule with wattage and control narrative• Location of daylight zones on floor plans

Commercial Plan Review Best Practice

Source: BMG

113

Electrical substantial completion• Fixture bulb and ballast type and quantity• Lighting controls• Electric meter for each dwelling unit.

Commercial Inspection –Best Practice

Source: BMGSource: BMG

114

Final inspection• All energy features that were not reviewed during other

inspections

Commercial Inspection –Best Practice

Source: BMG

115

Lighting Project ExampleSherwood Middle School

Source: Gilbane Co. & CENTRIA

Source: Gilbane Co. & CENTRIA

116


Program challenges included providing lighting solutions for a large flex space and integrating daylighting into a variety of spaces

Lighting Design Includes: LED and Dimmable fluorescent lighting Network lighting control with occupancy sensors and

daylight harvesting High efficiency transformers

117


• Energy Code Allowable LPD 1.2

• As-built Lighting Power Density 0.70

• Annual kWh Savings (Lighting Only) 67,500

• Lighting System Design 41% better than code

• MA-CHPS Certification

118

Resources

Designlights Consortium Qualified Products List (QPL): www.designlights.org/qpl

Advanced Lighting Guidelines (ALGonline): https://www.algonline.org

Daylighting Pattern Guide: www.patternguide.advancedbuildings.net /home

119

Codes and Standards Initiative ‐ Sponsors

Link to full slide deck of IECC Commercial Lighting and Lighting Controls presentation

Documents

Transcript of Link to full slide deck of IECC Commercial Lighting and Lighting Controls presentation