Natural Resources Canada (NRCan) has issued a clarification concerning the requirements for make-up air large air conditioners and direct expansion outdoor dedicated air systems under Canada’s Energy Efficiency Regulations.
NRCan defines a large air conditioner as a commercial or industrial unitary air conditioner with a cooling capacity of at least 19 kW but less than 223 kW. The definition does not include single package vertical air conditioners.
The department stated that direct expansion outdoor air systems designed to provide only 100 per cent outdoor air to the conditioned space cannot be tested using the current standards.
NRCan will not be taking enforcement action pertaining to the minimum and testing at these requirements, but will instead require that an energy efficiency report be submitted by the manufacturer, dealer or certification agency. www.nrcan.gc.ca
