Vanderli? Atmospheric Direct-Fired Gas Modular Boiler, Model CWZS0.7, dimensions: 2210mm long, 1422mm wide, 1985mm high. The direct-fired gas modular combined hot water boiler offers advantages such as high efficiency, durability, reliability, easy installation, flexibility, low operating costs, convenient maintenance and operation, excellent environmental performance, pollution-free operation, and noiselessness. It is widely suitable for heating and hot water supply in residential communities, commercial buildings, and households. Below is a comparison of Vanderli? gas modular boilers with other traditional boilers, highlighting the features of modular boilers: Gas modular boilers feature a modular design, simple structure, and flexible, convenient installation. The modular concept of gas boilers essentially breaks down a single large boiler into several smaller units. This allows gas modular boilers to achieve any required steam tonnage through simple parallel combinations, making them capable of replacing various common heating and hot water boilers. The modular design of these boilers results in the following characteristics: ① Each boiler serves as a backup for the others, significantly improving equipment and investment utilization as well as operational safety. In the event of an unexpected failure in one module, the impact on heating is minimal—only 1/N (where N is the number of boilers). No backup boiler is required. ② Excellent capacity expansion capability. As heating and domestic hot water loads in communities change (increase or decrease), the number of boilers can be easily adjusted to meet heating needs with minimal additional investment, unlike single large boilers, which are difficult to adjust in capacity. ③ Low requirements for boiler room infrastructure, substantially reducing construction costs. Small modular boilers can enter the boiler room through standard doors, and their layout can be customized based on the boiler room's specific conditions. For example, if the boiler room is long and narrow, the modules can be arranged accordingly. These boilers do not require special boiler room conditions, eliminating the need for deep foundations or expensive brick-concrete structures with high earthquake resistance. These features make condensing modular boilers particularly suitable for renovation and expansion projects. ④ The boilers operate on standard municipal low-pressure natural gas at 1.25–3.3 kPa, eliminating the need for independent pressure regulating stations, reducing pipeline costs, and saving on engineering expenses. ⑤ Gas boilers can be equipped with a unique "back-to-back" design, where one or multiple back-to-back modules form a heating system. Each system can be installed in parallel, with a compact size that requires no hoisting holes, saving space in the boiler room.