6. Every wood-burning appliance whose air-fuel ratio in the fire chamber is equal to or greater than 35:1 and every fireplace insert or factory-built fireplace whose average minimum burn rate is greater than 5 kg of fuel per hour must comply with the following conditions:(1) the manufacturer or importer of the appliance has been issued for that model a certificate of compliance or approval by the United States Environmental Protection Agency or by an organization, enterprise or laboratory accredited by the United States Environmental Protection Agency or the Standards Council of Canada that specifies that the appliance is not one of those referred to in section 4; and
(2) the appliance bears the mark confirming that the appliance is not an appliance referred to in section 4 and specifying the name of the accredited organization, enterprise or laboratory that carried out the testing.