The B149.2-20 was adopted on Feb 8, 2021 in Ontario.
Download the Code Adoption Document FS-254-20 - Here (https://www.hvactechgroup.com/article.php/2021030622514346)
They probably should have named this amendment FS-254-21. I think they made a typo...
It's also frustrating that the TSSA does not even have this posted on their website as News nor did they email those of us on their mailing list.