Gas condensing boiler CGB-2-75/100

The appliance achieves a seasonal central heating efficiency (ηs) of 95%. The integrated spread control system supports condensing operation and boiler circulation control during heating mode. The appliance also has an high modulation range of 1:6 and can be modulated down to 16%. This operating range supports system operation during periods of lower heat demand.

Thanks to the WOLF control system 2 (WRS-2), the new modern control system is fitted with a common temperature sensor for a low loss header. The WOLF programming unit 2 (BM-2) can also be integrated, along with the practical commissioning assistant. The system can also be maintained remotely and conveniently using the WOLF Link pro internet interface (version 4G incl. router).

Cascades of up to five units are suitable for a wide variety of applications and provide up to 500 kW of output. Flue gas return dampers for flue cascades are included as standard. The appliance is easy to integrate into building control systems, underlining its flexibility. 

The coated heat exchanger, made of extruded AlSi, is optimized for its rated capacity and features a large number of fins for heat transfer. The sophisticated design features a flue gas temperature sensor system, a combustion chamber cover with vermiculite insulation, an automatic air vent valve and many other robust components.

The control system was redesigned from the ground up to optimise the accessibility of every control connector and component. All of the circuit boards are contained in a single housing along with the optional WOLF Link home or I/O module. Integrated cable ducts and the central cable bushing in the combustion chamber make the components easy to access for installation and maintenance purposes.

No minimum side clearance, connections which are 100% compatible with the previous model and the simplicity of switching to LL / LPG make this appliance easy to use in a boiler room. The commissioning assistant in the BM-2 programming unit identifies WOLF components and guides the user directly and successfully through the configuration.

The CGB-2-75/100 is fully accessible from the front and top. Flue gas tests can be performed from the outside, making the appliance particularly easy to maintain. All cleaning is done under system pressure. WOLF worked closely with contractors during the development of the unit to make all relevant components as easy to access as possible.

The accessory and spare parts management system complements the product range. Many parts are shared with other WOLF appliances, reducing storage space requirements for trade partners and minimising mix-ups.

The appliance has an interior sound power level of 47 dB(A). “Our big one” looks striking in WOLF’s new, appealing silver stripe design.