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ASHRAE 2007 vs. 2010

ASHRAE 90.1 2007 vs. 2010 

 

Here's a quick chart depicting the impact of the change from ASHRAE 90.1 2007 to the 2010 version.

 

  2010 2007 What Does This Mean?
Threshold for triggering code compliance. Any New Construction projects and Retrofit projects involving alteration of greater than or equal to 10% of connected lighting load. Any New Construction Projects and Retrofit Projects involving alteration of greater than or equal to 50% of connected lighting load. More projects will trigger the threshold for code compliance.
Automatic Shut-Off of Lighting Required in all spaces. Required in buildings greater than 5,000sq.ft. All buildings regardless of size now require automatic shut-off.

Additional Control Requirements.

All spaces must have a control device to control the lighting in the space. These devices must be either:

-Manual On

 or

- Automatic on to 50% or less.

Enclosed spaces (individual rooms, areas enclosed by ceiling height partitions) must have a control device to control the general lighting in the space. This device can be either manual (e.g. switch) or automatic.  Requires Manual On operation of if using Automatic On, can not control more than 50% of the general lighting. 
Space Controls - more space types require Automatic Off within 30 minutes

The following spaces require the installation of an occupancy sensor or a time switch that turns lighting Off witin 30 minutes after the last occupant leaves the space:

  • Classrooms
  • Lecture Halls
  • Conference and Meeting Rooms
  • Training Rooms
  • Employee Lunch & Break Rooms
  • All storage and Supply Rooms between 50-1000sq.ft.
  • Rooms used for document copying and printing
  • All offices 250sq.ft. or less
  • Restrooms
  • Dressing, locker, and fitting rooms.

The following spaces require the installation of an occupancy sensor or a time switch that turns lighting off within 30 minutes after the last occupant leaves the space:

  • Classrooms
  • Conference and Meeting Rooms
  • Employee Lunch and Break Rooms
The only devices that comply are Occupancy Sensors and time switches. These must be configured as Manual On or Automatic On to 50% or less.
Light Level Reduction Enclosed spaces must have controls that reduce the power level by 30-70% of full connected load in addition to turning Off all lighting. Not a requirement in 2007 Code. Lighting must be wired to allow for a power reduction of 30 - 70%, in addition to turning Off the lighting either by dimming or multi-circuit switching. 
Daylight Zones Automatic, multi-level daylighting controls must be installed in enclosed spacs with sidelit areas 250sq.ft. or more and all toplit areas greater than 900sq.ft. Not a requirement in 2007 Code. Daylighting control must be automatic based on natural light contribution. Daylight controls must be installed in spaces with windows or skylights. 
Parking Garage Lighting Controls
  • Lighting must be reduced by at least 30% of connected power when motion is not detected within 30 minutes.
  • Automatic daylighting controls must be installed for perimeter lighting.
Not a requirement in 2007 Code. The new ASHRAE 90.1 has incorporated many of the interior lighting requirements and incorporated them for parking garage lighting. 
Exterior Lighting
  • Lighting must be Off during the day by photosensor.
  • Lighting is regulated during the night so it is either Off or operating at a reduced level depending on the purpose of the lighting. 
Lighting must be Off during the day (when daylight available).  Exterior lighting must be Off or at a reduced level during the night to increase energy savings. 
Automatic Receptacle Control 50% of all receptacles in private offices, open offices, and computer classrooms must be automatically shut-off.  Not a requirement in 2007 Code. To reduce energy waste, receptacle loads must be controlled as part of building design. 
System Commissioning All installed lighting controls must be tested and documentation must be submitted certifying compliance.  Not a requirement in 2007 Code. System certification, calibration, and adjustment must be submitted by a third party not involved in the design or construction of the project. 
       

 

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