CSA/AM - ANSI Z21.23-1989
GAS APPLIANCE THERMOSTATS EIGHTH EDITION; ADDENDA Z21.23A - 1991, ADDENDA Z21.23B - 1993
|Publication Date:||1 January 1989|
The standards set forth herein apply to the eighth edition of the Standard for Gas Appliance Thermostats, ANSI Z21.23-1989, and Addenda thereto, Z21.23a-1991, and supersede corresponding standards therein. Following their preparation by the supervising subcommittee, they were accepted by Accredited Standards Committee Z21 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.