ANSI Approves Changes to ASHRAE Energy Conservation and Network Standards
By Staff -- Consulting-Specifying Engineer, 4/1/2004
ANSI has recently approved eight addenda to ASHRAE's energy conservation and building controls network standards. These include five addenda to ANSI/ASHRAE/IESNA Standard 90.1-2001, Energy Standard for Buildings Except Low-Rise Residential Buildings and three addenda to ANSI/ASHRAE Standard 135-2001, BACnet - A Data Communication Protocol for Building Automation and Control Networks.
- Addendum 90.1h updates Section 12 references and the test procedure references in sections that cover building material thermal properties and assembly U-factors.
- 90.1p focuses on keeping building energy simulation programs bug-free. This addendum requires the programs to be tested with ANSI/ASHRAE Standard 140-2001, Standard Method of Test for the Evaluation of Building Energy Analysis Computer Programs.
- 90.1o revises an exception to Section 6.3.1., economizers, so that it only applies to heat recovery systems required by Section 6.3.6.2., heat recovery for service water heating.
- 90.1r adds return duct insulation requirements.
- 90.1s revises exceptions (g) and (i) in Section 6.3.6.1., exhaust air energy recovery.
- Addendum 135a changes the way BACnet systems represent and maintain schedules.
- 135c contains eight new features including life safety objects and services enhancements and the ability to represent utility meters and other measuring devices that provide pulsed outputs.
- 135d focuses on how to interconnect BACnet devices with devices that use the EIB/Konnex protocol.
All of the addenda are available for free via the "Standards Addenda" shortcut at www.ashrae.org.
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