Historical
ANSI Z21.10.1-2004/CSA 4.1-2004
Gas Water Heaters Volume 1, Storage Water Heaters With Input Ratings of 75,000 Btu Per Hour or Less. Includes Erratum No.2.
This standard applies to newly produced, automatic storage water heaters having input ratings of 75,000 Btu per hour (21 980 W) or less.
CSA America, Inc. [csa]