Summary of Modifications/Changes
in this Update
This Summary of Changes is for information only.
It is not a part of the referenced document, and should not be used for project documentation.
U.S. Department of Veterans Affairs♦Office of Construction & Facilities Management

DATE OF THIS VERSION (new)March 1, 2024
TITLE OF DOCUMENT (new title if applicable):Computer Room Air-Conditioners, 23 81 23
DATE OF VERSION BEING SUPERSEDED (old):
March 1, 2023
DESCRIPTION OF DOCUMENT (previous title, number, other identifying data):
Computer Room Air-Conditioners, 23 81 23
SUMMARY OF CHANGES IN THIS VERSION:
1. Updated dates on standards.
2. General: Added SPEC WRITER NOTE: “There could be more than one type of refrigerant

3.
4.
5.
6.
7.

required for the project. Edit paragraph and associated subparagraphs to suit projectrequirements in the refrigerant selection.” Made minor updates for consistency
throughout the specification.
Coordinated order of paragraphs with other sections in Division 23.
Corrected grammatical, punctuations and typographical errors both for corrections andfor consistency with the other sections and divisions.
1.7 A changed to reference Section 23 05 10 / 23 05 11 for consistency.
Added option for variable speed compressors.
Added spec writer note regarding sole proprietorship based on humidifier type.

Summary of Modifications/Changes
in this Update
This Summary of Changes is for information only.
It is not a part of the referenced document, and should not be used for project documentation.
U.S. Department of Veterans Affairs♦

Office of Construction & Facilities Management

DATE OF THIS VERSION (new)March 1, 2023
TITLE OF DOCUMENT (new title if applicable):Computer-Room Air-Conditioners, 23 81 23
DATE OF VERSION BEING SUPERSEDED (old):
March 1, 2020
DESCRIPTION OF DOCUMENT (previous title, number, other identifying data):
Computer-Room Air-Conditioners, 23 81 23
SUMMARY OF CHANGES IN THIS VERSION:
Updated references and dates on standards.
Coordinated order of paragraphs with other sections in Division 23.
Corrected grammatical, punctuations and typographical errors both for corrections andfor consistency with the other sections and divisions.
4. 1.7 A changed to reference Section 23 05 10 / 23 05 11 for consistency.
5. Added option for variable speed compressors.
6. Added spec writer note regarding sole proprietorship based on humidifier type.
1.
2.
3.

Summary of Modifications/Changes
in this Update
This Summary of Changes is for information only.
It is not a part of the referenced document, and should not be used for project documentation.
U.S. Department of Veterans Affairs♦

Office of Construction & Facilities Management

DATE OF THIS VERSION:
March 1, 2020
TITLE OF DOCUMENT:
Computer-Room Air-Conditioners, 23 81 23
DATE OF VERSION BEING SUPERSEDED (old):
April 1, 2011
DESCRIPTION OF DOCUMENT (previous title, number, other identifying data):
Computer-Room Air-Conditioners, 23 81 23
SUMMARY OF CHANGES IN THIS VERSION:
1. Provided a SPEC WRITER NOTE on the first page for updating and editing the ApplicablePublication list. (Provide the year of latest edition to each publication listed in Article 1.6
APPLICABLE PUBLICATIONS.)
2. Coordinated the Section titles through out the body of the section (PART 1 - GENERAL, PART2 – PRODUCTS and Part 3 – EXECUTION).
3. Corrected the section titles throughout this section to match the master list on the TIL.
4. Added the following SPEC WRITER NOTE in Artcle 1.6 APPLICABLE PUBLICATIONS. (Insertthe year of approved latest edition of puplicationsbetween the brackets // // and delete thebrackets if applicable to this project.)
5. Updated the dates of the edition for the applicable publications.
6. Deleted the Article 3.4 INSTRUCTIONS and moved the information to Article 3.5 STARTUP
AND TESTING.
7. Renumbered the Articles 5, 6 and 7 as Article 4, 5, and 6, respectively.
8. Changed the “Resident Engineer” to “ COR” in Artcle 3.5. (Article 3.4 after the change)
9. Corrected misspelled words and made general minor revisions.