scope:

PREFACE

The standards set forth herein apply to the first edition of the Standard for Gas Unit Heater and Gas-Fired Duct Furnacest, ANSI Z83.8-1996, and supersede Corresponding standards therein. Following their preparation by the supervising subcommittee, they were accepted by ANSI, the Interprovincial Gas Advisory Council, International Approval Services, and the Canadian Gas Association and subsequently approved.

NOTE: Changes, other than editorial, are denoted by a vertical line in the margin.

On June 30, 1997, the Canadian Standards Association (CSA) acquired international Approval Services (IAS) which was until then a joint venture of the American Gas Association (A.G.A) and the Canadian Gas Association (CGA). Under this agreement CSA acquired the complete range of IAS standards administration, certification and registration products and services for appliances and accessories fueled by natural and liquefied petroleum gases.