T/GDGCC 7-2019 Home multi-energy integrated gas hot water system
T/GDGCC 7-2019 Home multi-energy integrated gas hot water system
Basic Information
Scope
Scope: This standard specifies the terms and definitions, classification, models, requirements, test methods, inspection rules, marking, instructions, packaging, transportation, and storage of household multi-energy integrated gas water heating systems (hereinafter referred to as "the system"). This standard applies to household multi-energy integrated gas water heating systems with domestic hot water heating functions. The nominal volume of the water storage tank shall not exceed 600 L, the capacity range of the heat source unit shall be: the rated heat load of the gas heating unit shall not exceed 70 kW, the rated heat output of the air source heat pump shall not exceed 10 kW, the area of the solar collector shall not exceed 32 m2, and the temperature of the domestic hot water shall not exceed 65℃. It includes the following types of integrated water heating systems: a) a two-unit combination of solar energy and gas; b) a two-unit combination of heat pump and gas; c) a three-unit combination of solar energy, heat pump, and gas. This standard does not apply to: a) systems that only use one heat source unit; b) multi-energy integrated domestic hot water systems without a water storage tank. Main technical content: Household multi-energy integrated water heating systems are heating and domestic hot water systems that use gas water heaters as the basic backup heat source and operate in combination with solar water heating devices or air source heat pump water heating devices. This article discusses the safety and other technical requirements of cold and heat source systems that combine solar water heating units, air source heat pump units, and gas heating units, including two-unit combination systems of heat pump units and solar water heating units, gas heating units and heat pump units, and three-unit combination systems of gas heating units and solar water heating units and air source heat pump water heating units.