Standard No.:	GB/T 46733-2025
English Name:	Installation specification for independent air conditioners for vehicles
Chinese Name:	车载独立空调器安装规范
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR, SAC
Issued on:	2025-10-31
Implemented on:	2026-5-1
Status:	to be valid
Target Language:	English
File Format:	PDF
Word Count:	10500 words
Translation Price(USD):	315.0
Delivery:	via email in 1~5 business day

GB/T 46733-2025 Installation specification for independent air conditioners for vehicles English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered. ICS 13.220.10 CCS H 57 National Standard of the People's Republic of China ‌GB/T 46733-2025 Installation specification for independent air conditioners for vehicles 车载独立空调器安装规范 Issue date: 2025-10-31 Implementation date: 2026-05-01 Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China the Standardization Administration of the People's Republic of China Contents Foreword 1 Scope 2 Normative References 3 Terms and Definitions 4 Requirements for Air Conditioner and Installation Accessories 5 Air Conditioner Installation Requirements 6 Air Conditioner Installation Operations 7 Air Conditioner Inspection and Acceptance References 1 Scope This document specifies the installation accessories and requirements, installation operations, inspection during installation, and handover for the installation of vehicle-mounted independent air conditioners (hereinafter referred to as "air conditioners") within the air conditioning demand usage space. This document applies to the following situations; the installation of air conditioners for recreational vehicles may be referred to: — Installation of air conditioners on commercial vehicles before leaving the factory; — Installation of air conditioners on commercial vehicles after leaving the factory in accordance with this document and the design specifications and requirements of the vehicle manufacturer. 2 Normative References The content of the following documents constitutes indispensable provisions of this document through normative reference in the text. For dated references, only the edition corresponding to that date applies. For undated references, the latest edition (including any amendments) applies. GB 1589 Limits of Dimensions, Axle Load and Masses for Motor Vehicles, Trailers and Combination Vehicles GB/T 4706.32 Safety of Household and Similar Electrical Appliances — Part 32: Particular Requirements for Heat Pumps, Air-Conditioners and Dehumidifiers GB 6095 Fall Protection — Safety Belts GB/T 17790 Installation Specification for Household and Similar Air-Conditioners GB/T 20025.2—2005 Rubber and Plastic Hoses and Hose Assemblies for Automotive Air Conditioning — Resistant to Refrigerant R134a GB 20182 External Protrusions on Commercial Vehicle Cabins GB/T 22766.3 After-Sales Service for Household and Similar Electrical Appliances — Part 3: Particular Requirements for Air-Conditioners GB/T 35753 Mounting Brackets for Outdoor Units of Air Conditioners 3 Terms and Definitions The terms and definitions given in GB/T 17790, GB/T 22766.3, and GB/T 35753, as well as the following, apply to this document. 3.1 Vehicle-Mounted Independent Air Conditioner A device consisting of a compressor, condenser, evaporator, throttling element, fan, necessary auxiliary equipment, and control components, housed in a separate casing, independently installed on a vehicle, powered by the vehicle's own power source, and capable of providing treated air to the interior space when the vehicle's main power system is not operating. 3.2 Air Conditioner Installation The process by which professional installers, in accordance with the design specifications and requirements of the air conditioner and vehicle manufacturers, secure, assemble, connect, and commission a vehicle-mounted independent air conditioner to achieve its intended function and integrity. 3.3 Installation Surface The load-bearing surface that supports or secures the air conditioner. Example: Side or top surface of the vehicle. 4 Requirements for Air Conditioner and Installation Accessories 4.1 General Requirements Accessories used for air conditioner installation shall comply with the requirements of the installation instructions, and the accessory list shall be complete and undamaged. The air conditioner to be installed shall have an installation structure and a functional wiring diagram suitable for its intended use and type, and shall be accompanied by at least the manufacturer's product qualification certificate and warranty card. 4.2 Pipes Connecting the Outdoor Unit and Indoor Unit 4.2.1 The connecting pipes shall comply with the provisions of clauses 6.8 and 6.9 of GB/T 20025.2-2005 and shall have good thermal insulation. 4.2.2 The connecting pipes shall use sealed connections or other equivalent connection methods, such as O-ring fittings. The connection components shall not have quality issues such as cracks or grooves. 4.2.3 Preference shall be given to using connecting pipes and fittings provided with the air conditioner upon delivery. Accessories not provided upon delivery shall meet the requirements of the air conditioner manufacturer. 4.3 Electrical Wiring The connection of the air conditioner's power cord, inter-unit signal lines between indoor and outdoor units, and electrical control lines shall comply with the relevant requirements of GB/T 4706.32. The terminals for interconnecting cables and control cables shall have clear and understandable color and character markings (e.g., using color, characters, or structure). 4.4 Outdoor Unit Mounting Brackets and Fasteners 4.4.1 Outdoor Unit Mounting Brackets The mounting brackets and fasteners for the outdoor unit of the air conditioner shall comply with GB/T 35753. 4.4.2 Fasteners Bolts used for load-bearing or shear-resistant fixation or connection shall comply with the requirements of the installation instructions. 5 Air Conditioner Installation Requirements 5.1 General Requirements 5.1.1 During air conditioner installation operations, installers shall have reliable safety protection measures. When working at a height of 2 meters or more above the fall protection reference plane, safety belts (ropes) shall be worn. Safety belts (ropes) shall comply with the requirements of GB 6095 and have complete, clear markings. Safety belts (ropes) shall be anchored high and used low, prevented from swinging, shall not be knotted, and shall be protected from impact. Safety belts (ropes) longer than 3 meters shall be equipped with shock absorbers. During air conditioner installation, safety belts (ropes) shall be attached to connecting rings and shall not be knotted. Safety belts (ropes) and related accessories shall be inspected before use; those exceeding the safe service life, damaged, or with loose or detached components shall not be used. 5.1.2 Personnel engaged in air conditioner installation work shall undergo specialized training and obtain relevant qualifications before starting work. 5.1.3 Air conditioner installation shall comply with the design specifications and requirements of the vehicle manufacturer and the air conditioner manufacturer and shall not compromise the safety structure of the vehicle. 5.1.4 The installation surface for the air conditioner shall be sturdy and robust, with sufficient load-bearing strength. Its load-bearing capacity shall not be less than 4 times the actual weight of the air conditioner it carries, and ventilation space and noise after installation shall be considered. 5.2 Noise and Vibration The installed air conditioner shall not produce significant abnormal noise or vibration during vehicle travel and operation.