28 Kw Double Heat Exchanger Combi Wall Hung Gas Boiler

28 Kw Double Heat Exchanger Combi Wall Hung Gas Boiler. High Thermal Efficiency: 92% thermal efficiency ensures energy saving and reduced gas consumption. Smart IoT Control: Mobile phone WIFI remote control with one-click gas consumption viewing. Adaptive Technology: Adapts to gas pressure 300-3000Pa, voltage 160v-280v, and water flow stability. Low Noise Design: Built-in fluid mechanics silencer ensures silent operation without sleep disturbance. Oxygen-Free Copper: Heat exchanger made of oxygen-free copper for superior durability and heat transfer. Dual Gas Compatibility: Supports both Natural Gas (NG) and Liquefied Petroleum Gas (LPG). Rainwater Protection: Integrated rainwater collector prevents backflow and protects core components. Space Saving Design: Wall-mounted combi design eliminates need for water storage tank.