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Draft standard PROY-NOM-003-ENER-2020: Thermal efficiency of water heaters for domestic and commercial use. Limits, testing method and labelling

Last updated: 15 June 2021
This standard applies to water heaters for domestic and commercial use using L.P. gas or natural gas that produces only hot water. Likewise, it applies only to the following types of heaters: (1) storage; (2) rapid recovery; and (3) instantaneous ; and heaters with maximum thermal loads of 35 kW for domestic heaters and thermal loads of 35 to 108 kW in commercial heaters. The standard establishes the thermal efficiency that the heaters must achieve based on the lower calorific power. See the attachment for the minimum thermal efficiency levels.

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