Standard for Exhaust Cleaning and Recirculation Assemblies for Commercial and Institutional Kitchen Exhaust Systems 

1.1 This Standard applies to exhaust cleaning assemblies intended primarily for use with exhaust systems for commercial and institutional type cooking equipment such as ranges, broilers, deep fat fryers, grills, etc… that are Gas-Fuelled and Electronically-Fuelled. They are complete units typically including filter box, filters, odour removal media, fire damper, fan box, fan and motor controls and control panel. The units are located downstream from grease extractors or hood and filter assemblies and may be floor mounted, suspended in a ceiling space or roof mounted.

1.2 This Standard also applies to exhaust recirculation units that are for connection to the outlet from air cleaning assemblies and are intended to temper make-up air by recycling up to 80% of the clean exhaust air to the kitchen area. The remaining make-up air is drawn from outside of the building or from areas adjoining the kitchen. The scope of this Standard does not include the evaluation of air quality when these units are used in conjunction with gas or solid fuel-fired appliances.