Understand the differences between ASHRAE 90.1-2010 and

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Application Note INS # Understand the differences between ASHRAE 90.1-2010 and ASHRAE 90.1-2007 and how to ensure code compliance. Overview ASHRAE 90.1-2010 has…
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Application Note INS # Understand the differences between ASHRAE 90.1-2010 and ASHRAE 90.1-2007 and how to ensure code compliance. Overview ASHRAE 90.1-2010 has increased lighting control requirements over previous versions. This application note summarizes the major differences between the 2010 and 2007 code versions in a side by side comparison. This document will help design professionals quickly see what changes have occurred. Design professionals should always review and understand the specific code language for project compliance and only use this document as a reference. Table 1.  ASHRAE 90.1 2010 2007 What does this mean? Threshold for Any new construction projects and Any new construction projects and More projects will trigger the Triggering Code Retrofit projects involving alteration Retrofit projects involving alteration threshold for code compliance. Compliance of ≥ 10% of connected lighting load. of ≥ 50% of connected lighting load. Automatic Shut-off Required in all spaces. Required in buildings 5,000 sq. ft. All buildings regardless of size now of Lighting require automatic shut-off. Additional All spaces must have a control device Enclosed spaces (individual rooms, Requires Manual ON operation Control to control the lighting in the space. areas enclosed by ceiling height or if using Automatic ON, can not Requirements These devices must be either: partitions) must have a control device control more than 50% of the general ã Manual ON to control the general lighting in lighting. or the space. This device can be either ã Automatic ON to 50% or less manual (e.g. switch) or automatic. Space Controls – The following spaces require the The following spaces require the The only devices that comply more space types installation of an occupancy sensor installation of an occupancy sensor are occupancy sensors and time require Automatic or a time switch that turns lighting or a time switch that turns lighting switches. These must be configured OFF within 30 OFF within 30 minutes after the last OFF within 30 minutes after the last as Manual ON or Automatic ON to minutes occupant leaves the space: occupant leaves the space: 50% or less. ã Classrooms ã Classrooms ã Lecture halls ã Conference and meeting rooms ã Conference and meeting rooms ã Employee lunch and break rooms ã Training rooms ã Employee lunch & break rooms ã All storage and supply rooms between 50-1000 sq. ft. ã Rooms used for document copying and printing ã All offices 250 sq. ft. or less ã Restrooms ã Dressing, locker, and fitting rooms Light Level Enclosed spaces must have controls Not a requirement in 2007 code Lighting must be wired to allow for Reduction that reduce the power level by a power reduction of 30 -70%, in 30-70% of full connected load in addition to turning OFF the lighting addition to turning OFF all lighting. either by dimming or multi-circuit switching. 2010 2007 What does this mean? Daylight Zones Automatic, multi-level daylighting Not a requirement in 2007 code Daylighting control must be controls must be installed in enclosed automatic based on natural light spaces with sidelit areas 250 sq. ft. contribution. Daylight controls must or more and all toplit areas greater be installed in spaces with windows than 900 sq. ft. or skylights. Parking Garage ã Lighting must be reduced Not a requirement in 2007 code The new ASHRAE 90.1 has Lighting Controls automatically by at least 30% of incorporated many of the interior connected power when motion is lighting requirements and not detected within 30 minutes. incorporated them for parking garage ã Automatic daylighting controls lighting. must be installed for perimeter lighting. Exterior Lighting ã Lighting must be OFF during the ã Lighting must be OFF during the Exterior lighting must be OFF or at day by photosensor. day (when daylight available) a reduced level during the night to ã Lighting is regulated during increase energy savings. the night so it is either OFF or operating at a reduced level depending on the purpose of the lighting. Automatic 50% of all receptacles in private Not a requirement in 2007 code To reduce energy waste, receptacle Receptacle offices, open offices, and computer loads must be controlled as part of Control classrooms must be automatically building design. shut-off. System All installed lighting controls must be Not a requirement in 2007 code System certification, calibration, Commissioning tested and documentation must be adjustment must be submitted by a submitted certifying compliance. third party not involved in the design or construction of the project. Eaton 1000 Eaton Boulevard Cleveland, OH 44122 United States Eaton.com Eaton’s Cooper Controls Business 203 Cooper Circle Peachtree City, GA CooperControl.com © 2014 Eaton Eaton is a registered trademark. All Rights Reserved Printed in USA All trademarks are property Publication No. ACC140114 of their respective owners.
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