CAN/CSA-P.4.1-02 (R2006)

1. Scope 1.1 The purpose of this Standard is to provide a method for measuring annual fireplace efficiency. 1.2 This Standard applies to vented gas fireplaces approved to CSA Standard ANSI Z21.50/CSA 2.22 and to vented gas fireplace heaters approved to CSA Standard ANSI Z21.88/CSA 2.33 that use natural gas or propane. 1.3 This Standard includes (a) a test method for cyclic and part load performance; (b) methods for interpolating and extrapolating test data; and (c) calculation procedures for establishing seasonal performance. 1.4 This Standard is written in yard/pound units.