Preface

This is the second edition of CSA P.8, Thermal efficiencies of industrial and commercial gas-fired package furnaces. It supersedes the previous edition, published in 1997 by the Canadian Gas Association.

Scope

1.1
This Standard specifies test methods and performance criteria for determining the efficiency of package furnaces.

1.2
This Standard applies to package furnaces using a three-phase power supply with input rates less than or equal to 2930 kW (10 000 000 Btu/h).

1.3
This Standard applies to package furnaces using a single-phase power supply with input rates greater than or equal to 65.9 kW (225 000 Btu/h).

1.4
The values given in SI (metric) units are the standard. The values given in parentheses are for information only.

1.5
In CSA Standards, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; "may" is used to express an option or that which is permissible within the limits of the standard; and "can" is used to express possibility or capability. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.