This standard specifies the terms and definitions, types, models and basic parameters, requirements, tests, inspection rules, signs, packaging, transportation and storage of multi-connected air-conditioning (heat pump) units (hereinafter referred to as "units"). This standard applies to multi-connected air-conditioning (heat pump) units using Class A1 refrigerants specified in GB/T 7778. Units using A2L refrigerants, dual refrigeration cycle systems and multi-refrigeration cycle systems can refer to this standard.
GB/T 18837-2015 Referenced Document
GB 25130 Safety requirements for unitary air.Conditioners
GB 9237 Mechanical refrigerating systems used for cooling and heating-Safety requirements
GB/T 10870-2014 The methods of performance test for water chilling (heat pump) packages using the vaper compression cycle
GB/T 18430.1-2007 Water chilling(heat pump)packages using the vapor compression cycle.Part 1:Water chilling(heat pump)packages for industrial & commercial and similar application
GB/T 191 Packaging.Pictorial marking for handling of goods
GB/T 2828.1 Inspection procedure by count sampling part 1: Lot by lot inspection sampling plan retrieved by acceptance quality limit (AQL)