A stylish casing and the compact dimensions offer many mounting possibilities. The internal components are chosen from very robust and durable materials such as copper pipes, cast-aluminum heat exchanger, a glass fiber reinforced polyamide hydraulic block and a stainless steel DHW heat exchanger in the combi boilers. The straightforward design of the monobloc heat exchanger has large and simple water channels. The High-efficiency pump and fan together with the high thermal conductivity of the heat exchanger lets the FGB easily comply with class A of the ErP directive. Additional components like safety valve, condensate trap, expansion vessel, air vent and a flue gas non-return valve (for multiple-floor systems) are already integrated. Installation and maintenance can be done very quickly by a single person due to the fixing and connection design.

• Energy efficiency category: A

The design of the combustion chamber is optimized for a very clean combustion and an efficient modulation range (up to 1:6) at very low gas pressures. The built-in controller supports weather compensation (sensor as accessory), is compatible with all Wolf controls, allows solar integration and provides internet connectivity through browser or iOS/android app (iSM7e as accessory). Online control and monitoring for users and installers gives you access to the boiler from everywhere for better service, more savings and highest comfort. The big display shows all the important data with a very simple and user friendly interface. A high DHW flow rate with a draw-off range from only 2 l/min to 16 l/min together with a quick start function and a high-speed temperature adaptation, the hot water temperatures are always comfortable. The new spread control of the pump lowers the return temperatures for more condensation, higher efficiency and a cleaner heat exchanger.