CSA/AM - ANSI Z21.56/CSA 4.7
GAS-FIRED POOL HEATERS SEVENTH EDITION
| Organization: | CSA/AM |
| Publication Date: | 1 January 1993 |
| Status: | inactive |
| Page Count: | 110 |
scope:
PREFACE
The standards set forth herein apply to the seventh edition of the American National Standard for Gas-Fired Pool Heaters, ANSI Z21.56-1991, and supersede corresponding standards therein. Following their preparation by the supervising subcommittee, they were accepted by Accredited Standards Committee Z21 and subsequently approved as American National Standard by the American National Standards Institute, Inc.
NOTE: Changes, other than editorial, are denoted by a vertical line in the margin
Document History