CSA/AM - ANSI Z21.23B-1997
Addenda to Z21.23-1993 Gas Appliance Thermostats
|Publication Date:||1 January 1997|
The standards set forth herein apply to the ninth edition of the Standard for Gas Appliance Thermostats, ANSI 22123-1993, and Addenda Z21Ba-1994, and supersede corresponding standards therein. Following their preparation by the supervising subcommittee, they were accepted by Accredited Standards Committee 221 and subsequently approved as an American National Standard by the American National Standards Institute, Inc.
NOTE: Changes, other than editorial, are denoted by a vertical line in the margin.