Features of Vandelay Gas Modular Boilers 1. Modular design, simple structure, flexible and convenient installation The concept of a modular gas boiler is equivalent to splitting a single large boiler into several smaller units. Therefore, modular boilers can achieve the scale of any steam tonnage through "simple parallel combination" in quantity, making them capable of replacing various heating and hot water boilers below 10 steam tons commonly used today. In large boilers, the air-gas mixture is delivered into the furnace by a blower, which generates significant noise, causing sound pollution and worsening the working environment for employees. In contrast, modular boilers utilize atmospheric combustion, eliminating the need for a blower. As a result, they operate very quietly—only a slight "whooshing" sound is heard during combustion, with no other noise. Most modular boilers use burners made of special aluminized steel materials, specifically designed with aerodynamic processes to ensure highly efficient gas combustion. Tests have proven a combustion efficiency of over 98%. Complete combustion reduces the nitrogen oxide content in the flue gas, minimizing environmental pollution. Vandelay gas modular boilers feature staged startup, resulting in significant energy savings. The modular boiler system automatically adjusts the startup and shutdown of modules based on the system’s thermal load through its staged startup function. When one module reaches full load, another module is activated, ensuring that the system’s heat output always matches the actual demand. This guarantees that each boiler operates at high efficiency, maximizing the overall system’s operational thermal efficiency and completely eliminating the energy waste common in traditional large boilers. Additionally, the control system automatically balances the operating time of each module, extending the overall system lifespan. In summary, the Vandelay gas modular boiler series represents a breakthrough in design concept and form compared to traditional boilers. This series offers unparalleled advantages in environmental protection, energy efficiency, safety, automation, lifespan, installation, power consumption, capacity expansion, footprint, and space utilization. It has been widely applied in various new and renovated heating and hot water projects. Vandelay gas modular boilers are safe and reliable. In open installation systems, the water pressure system operates under constant atmospheric pressure and includes multiple comprehensive safety protections: flameout protection, dry burn protection, freeze protection, low water level protection, automatic exhaust protection, overheat protection, and leakage protection. In closed installation systems, the sealed water circuit operates under a pressure of 0.05–0.3 MPa. In addition to the safety features of open systems, closed systems also include: pressure expansion protection, low water pressure protection, and a safety pressure relief device for high-pressure conditions.