Air-energy water heaters, also known as heat pump water heaters, have entered the country for a short time, but in fact, air-to-air heat pump technology was invented in 1924, but it was not fully utilized. Until the 1960s, the world energy crisis broke out. Because of its energy-saving and no pollution to the environment, air-energy heat pumps have gradually emerged, and they have begun to enter the stage of history.
In most developed countries of Europe and the United States, such as Australia, the United Kingdom, France, Germany, and Northern Europe and Southern Europe, heat pump products have entered most households. In the United States, heat pump production increased from 82,000 units/year in 1971 to 1976. 300,000 sets/year, which was increased again to 500,000 sets/year in 1977. At this time, Japan came from behind and its annual output exceeded 500,000 sets. According to the 1998 US survey data, the United States has about 30% of hot water supply equipment. The use of air-heated water heaters, to the installation of 400,000 air-energy water heaters annually in the United States since 2001, and maintaining an annual rate of 10%.
In China, air-to-energy water heaters entered before and after 2002 and first landed in Guangdong. Because of its super energy-saving and all-weather features, it quickly spread to hotels, campuses, factories, stadiums, and other enterprises in the hot water market below 60°C. Facilities.
In 2008, air-energy water heaters were supported by national policies due to the characteristics of environmental protection and energy conservation. It was said by industry professionals that 'airpower water heaters are adolescent'. May 1, 2008, “Commercial or Industrial and Similar Heat Pumps “Hot water machine” national standard was promulgated and implemented, which provided a reference for product production and engineering installation of commercial heat pump water heaters, played a normative role in the industry, contributed to the overall improvement of industry technology level, and promoted the healthy development of the industry.
Professional and technical personnel said that although the energy-saving effect of the air-energy water heater is significant, if it is improperly installed, the energy-saving effect of the unit will be greatly reduced. So how can the energy-saving effect be achieved when installed?
1. Installation location selection: The air energy water heater can be installed in the air circulation area such as balcony, terrace, exterior wall, roof, floor, etc. The water tank can also be placed separately in the kitchen and toilet, while the main machine is installed on the exterior wall near the water tank. The standard copper tubing connection between the main unit and the tank is 3 meters long, which is not conducive to the circulation of the refrigerant. The main unit of the air energy heater can be hung on the wall without occupying the ground, while the vertical tank requires a certain floor area. Come to display.
Second, the installation needs to pass through the drainage equipment: Device air energy water heater in the course of the use of condensed water discharge, so the location of the device should have a floor drain, water ditch, etc. can drain the equipment.
Third, the location of air energy water heater instrumentation device: The instrument is the control panel needs the nearest device to prevent raining; because the operating mode is mostly selected 'economic form', the control panel is rarely operated in practice, there is no need to install in a very conspicuous position , Balcony, corridor wall can be installed.
Fourth, air energy water heater water pipe layout: Air energy water heater inlet and outlet pipe 25PPR pipe (commonly known as 6 in charge of), pay attention to the water pipe screw or 4 points; air energy water heater is a central water heater, water pipe in practice is the main pipe, caliber to be larger, In this way, the phenomenon of “cold and hot” can be prevented. For customers who install the device backwater, the diameter of the return pipe is only 4 minutes.
5. Power socket: The power socket is a three-pin plug with a diameter of 1.5 square feet (or more), * with a waterproof box.
Sixth, air energy water heater test procedure: 1, first connected to the cold water pipe, cold water pipe connected to the location of the valve inlet (cold water pipe interface should be equipped with maintenance valve); 2, water tank irrigation, irrigation water tank is an important part ( The irrigation must be completed before the hot water pipe is connected.) After the hot water outlet water flows out (indicating that the tank was filled with water), close the valve and stop the irrigation.
In addition, it should be noted that the distance between the main body of the air-heated water heater and the tank must not exceed 5 meters, because the longer the distance, the lower the heating efficiency. The control panel* should not be placed in the bathroom to avoid moisture.