The amount of hot water a family of his decision to pursue the degree of comfortable life. As people pursue a comfortable life in a variety of public demand for hot water is also increasing day by day. Hot commercial areas provide much more difficult than the home. This paper describes the large volume of water heater applications in commercial applications and large volume water heaters Selection Important: In commercial applications, providing quality hot water, will directly affect customer satisfaction. For this reason, demand for commercial applications of hot water comfort great. Meanwhile, in many schools, hotels, swimming pool, large factories and other enterprises, there is often a lot more than the instantaneous hot water needs. Global commercial water heaters, central heating equipment manufacturer prominent Rheem (Swiss America) Group was born in 1889, specialized in commercial water heaters R & D, manufacturing and sales. Commercial water heaters include volumetric electricity / natural gas water heaters, gas water heater fast, solar water heaters, DC unit heaters, air-source heat pump water heater. Constant heat of 124 years of brand history, EVERHOT constant hot water heater with outstanding performance in the international market, is the 21th World University Games in Beijing designated products, won the McDonald's, KFC, Wal-Mart, Carrefour, Unilever, Coca-Cola, Pepsi and other world-renowned companies trust, with the well-known and Hutchison Whampoa, Vanke, China Resources, CapitaLand, Yanlord, Ryan, Lake and other real estate companies to establish long-term cooperative relationship; for airports, stadiums and other large public places, government offices, schools, hospitals hotels, clubs, beauty salons and fitness hot water units to provide quality solutions. Compared to the widely used boilers and other equipment, constant hot water heating systems for commercial water heaters can be any combination of 1-25 and thermal storage tanks, power variable, wide application, according to the applicable matching model where the heat load; according to the automatically adjust the amount of water heater is turned on, the machine automatically shield failure to fully meet the hotels, dormitories, fitness center, while a lot of hot water supply needs to enjoy a more comfortable life. Can achieve low input costs, low operating costs, low maintenance costs of the "three lows" feature. Like yoga such places, you need constant hot water heaters for commercial parallel systems. It includes a high-power constant 2-25 heaters, water heaters installed in parallel these together to form a large amount of water to provide instantaneous commercial water heating systems. In Shanghai, a yoga studio on the use of a set of 16 parallel 26 liters water heater system, it can for the museum bathrooms for men and women 32 water points simultaneously, and fully guarantee the water consumption during peak water yoga studio, and the water temperature is preset The water temperature constant. Provides greatly bathing comfort, by operators love. Constant hot water heater large volume Features: · Microcomputer control, automatic operation, a POST function. · Storage capacity, fast re-heat, heat a large amount of water. · Export enclosed design, pressure is stable. · With a variety of security devices over-temperature protection, temperature / pressure relief valve, water protection, sensor failure protection. · New DCTS? Digital control energy saving system, self-setting, regular operation, with the "TOU" supply policy, energy conservation. · Central sub balanced injection system, access to water, energy-saving design for vertical link models, effectively improve the rate of heat aquaculture, bathing longer meet demand. Can be wired remote control, human separation, so that the installation location is not restricted, and easy to use. · There is water temperature and the current operating status display with on / off, clock, heating / insulation, warning lights, beep prompt. · Heating pipe work status monitoring. · Power switch gear can be divided to accommodate different load distribution or hot water demand throughout the year due to different users. * Can storage along with tanks, to provide users with greater water heating water. Maximum models meet 774-1290㎡ building area per heating for residential or commercial premises central heating needs. · Floor type (vertical), indoor type. Keywords: commercial large volume water heaters, water heaters, commercial large-volume selection