CSA ANSI Z21.13a-2005/CSA 4.9a-2005
Addenda 1 to ANSI Z21.13-2004/CSA 4.9-2004, Gas-Fired Low Pressure Steam and Hot Water Boilers
Amendment by CSA Group, 01/01/2005
CSA ANSI Z21.71a-2005 (R2016)
Addenda 1 to ANSI Z21.71-1993, Automatic Intermittent Pilot Ignition Systems for Field Installation
Amendment by CSA Group, 01/01/2005
CSA ANSI Z21.41a-2005/CSA 6.9a-2005
Addenda 1 to ANSI Z21.41-2003/CSA 6.9-2003, Quick Disconnect Devices for use with Gas Fuel Appliances, Includes Erratum (2007)
Amendment by CSA Group, 01/01/2005