CSA ANSI Z21.10.3-2013/CSA 4.3-2013 Gas Water Heaters - Volume III, Storage Water Heaters, With Input Ratings Above 75,000 Btu Per Hour, Circulating and Instantaneous
2013CSA ANSI Z21.10.3-2013/CSA 4.3-2013 Gas Water Heaters - Volume III, Storage Water Heaters, With Input Ratings Above 75,000 Btu Per Hour, Circulating and Instantaneous