Email   Password


ASHRAE Membership

ASHRAE membership is open to any person associated with heating, ventilation, air conditioning or refrigeration. ASHRAE is unique because its membership is drawn from a wide range of disciplines relating to the HVAC&R field. Approximately 51,000 individuals from more than 100 nations belong to the Society.

Discounts on Publications

ASHRAE members earn 15% off publications. Hundreds of titles are available including the complete collection of ASHRAE Standards including 90.1, 62.1 and 189.1.
Click here for information on joining or to join ASHRAE

Develop Leadership Skills

When you join ASHRAE, you are making an investment in yourself. When you become active in the Society by giving your time and sharing your knowledge, you get even more out of that investment.

Network with Industry Professionals

Each month, all over the world, ASHRAE chapters convene for an informational program featuring a speaker or topic that is key to professionals in the industry. Meet with your peers and share ideas.
Need technical info? Search ASHRAE's Bookstore >
Standards, Research & Technology

Addendum to Standard 135-2001

NOTE: All documents linked from this page are in PDF PDF-format.

(These descriptions may not be complete and are provided for information only.)

Addendum a (135a-1. Add Partial Day Scheduling to the Schedule object, p. 1.; 135a-2. Enable reporting of proprietary events by the Event Enrollment object, p. 9; 135a-3. Allow detailed error reporting when all ReadPropertyMultiple accesses fail, p. 11; 135a-4. Remove the Recipient property from the Event Enrollment object, p. 12; 135a-5. Add the capability to issue I-Am responses on behalf of MS/TP slave devices, p.15; 135a-6. Add a new silenced mode to the DeviceCommunicationControl service, p. 19; 135a-7. Add 21 new engineering units, p. 20; 135a-8. Specify the behavior of a BACnetArray when its size is changed, p. 22; 135a-9. Clarify the behavior of a BACnet router when it receives an unknown network message type, p.25.)

Addendum b (Multiple sections: Removed UTC timestamps from Trend Logs and guarantee Trend Log record ordering.)

Addendum c (135c-1. Allow Life Safety objects to advertise supported modes, p. 1; 135c-2. Add Unsilence Options to the LifeSafetyOperation Service, p.3; 135c-3. Specify the relationship between the Event_Type and Event_Parameter properties, p.4; 135c-4. Add a new Accumulator Object Type, p. 5; 135c-5. Add a new Pulse Converter Object Type, p. 19; 135c-6. Standardize event notification priorities, p.32; 135c-7. Define Abort reason when insufficient segments are available, p.38; 135c-8. Add new Error Codes and specify usage, p.39.)

Addendum d (135d-1. Add clauses describing BACnet-EIB/KNX mapping, p. 1.)