Historical
ANSI Z21.40.2a-1997/CGA 2.92a-M1997 (R2002)
ANSI Z21.40.2a-1997(R02)/CGA 2.92a-M97PD - Addenda 1 to ANSI Z21.40.2-1996/CGA 2.92-M96, Gas-Fired, Work Activated Air-Conditioning and Heat Pump Appliances (Internal Combustion)
Approved March 13, 1997 by American National Standards Institute, Inc.
Approved June 28, 1996 by the Interprovincial Gas Advisory Council; Effective in Canada September, 1998.
CSA America, Inc. [csa]