Gas boilers and condensing boilers, heating devices CGB, CGB-K by Wolf combine the highest quality of devices, maximum comfort of use with care for the environment and energy savings.
Condensing boiler of German quality
Condensing boilers CGB, CGB-K, like all Wolf devices, are manufactured 100% in German factories of Wolf GmbH in Mainburg. What's more, the same product, with exactly the same standard of equipment and quality, is dedicated to both the German market and any other - including Polish. This means that using CGB, CGB-K boilers, you can enjoy the famous German quality every day.
Wall-mounted gas boilers CGB (single-function), CGB-K (double-function) by Wolf GmbH can perfectly use the energy contained in the fuel. They use advanced condensing technology, which allows for thermal efficiency of up to 110%. Condensing technology allows for such high efficiency by using the heat of water vapor contained in the exhaust gases. By lowering the exhaust gas temperature below the dew point, we obtain a significant amount of additional heat above the value of 95%, and the size of this yield can reach up to 15%, as is the case with CGB and CGB-K boilers. As a result, condensing CGB and CGB-K boilers by Wolf GmbH are much more economical and more efficient (110%) compared to conventional boilers, while reducing pollutant emissions. In times of constantly rising fuel prices and in the interest of environmental protection, this is extremely important.
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Construction diagram of a CGB condensing boiler
- Exhaust gas discharge, air intake.
- Fan.
- Expansion tank with a capacity of 12 l.
- Torch.
- Aluminum-silicon heat exchanger made in ALU-Pro technology.
- Condensate drain.
- Energy-saving circulation pump of energy class A.
- 3-way valve (combined boiler).
- Regulation system.
- Electrical connections.
ALU-Pro technology allows for maximum heat recovery
In order to properly use the condensing technique and to recover heat from gas combustion to the maximum, together with the latent heat of water vapor contained in the exhaust gases, it is necessary to use an appropriate heat exchanger. Therefore, CGB, CGB-K boilers are equipped with an aluminum-silicon alloy exchanger, which has unique heat transfer properties and is characterized by high resistance to the corrosive effects of condensate formed in the boiler. Additionally, ALU-Pro technology was used in it and it was covered with a polymer layer that increases combustion efficiency and the cleanliness of the combustion chamber.
You can perform maintenance and service work from the front of the boiler
CGB, CGB-K boilers are designed in the smallest detail. They can be easily installed in almost any place, as there are no restrictions related to the distance from the side walls. Professionals will appreciate the fact that most maintenance and service work can be carried out from the front of the boiler. What's more, the heat exchanger of CGB, CGB-K boilers has a tilting structure that allows, by tilting it, easy access to the combustion chamber, without the need to empty the water from the central heating system.
Energy-saving condensing boiler
Efficiency and energy efficiency are the most important advantages of every heating device. To minimize electricity consumption, the CGB, CGB-K boilers use a modulated circulation pump of energy class A. The intelligent WRS regulation system from Wolf also ensures economical use of energy, providing the possibility of operating up to 7 heating circuits and operation in weather mode. Its extraordinary ease of use will be appreciated by the user every day for many years of failure-free operation.
Advantages of CGB, CGB-K condensing boilers
- Gas condensing boiler in 8 series:
- -11, -20, -24, -35, -50 kW (single-function),
- -20, -24, -40 kW (dual function).
- ALU-Pro aluminum-silicon heat exchanger covered with a polymer layer.
- Very fast heat transfer.
- Low energy consumption.
- The tilting design of the combustion chamber facilitates cleaning and maintenance.
- Efficiency up to 110% thanks to the use of condensing technology.
- Modulating circulation pump, burner and fan.
- 12-litre diaphragm expansion tank integrated with the boiler (CGB 11-24).
- Extremely easy to operate – cooperation with the intelligent WRS regulation system (up to 7 heating circuits, weather control).
- 3-way valve for cooperation with a domestic hot water heater in standard equipment (dual-function boiler).
- 5-year warranty on the Wolf heating system.
| Technical data | Unit | Condensing gas boiler (single function) | Condensing gas boiler (combined) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| CGB-11 | CGB-20 | CGB-24 | CGB-35 | CGB-50 | CGB-K-20 | CGB-K-24 | CGB-K-40/35 | ||
| Nominal power at 50 / 30*C | kW | 10.9 | 20.5 | 24.8 | 34.9 | 49.9 | 20.5 | 24.8 | 34.9/- |
| Minimum power (modulation) at 80 / 60*C | kW | 3.2 | 5,6 | 7.1 | 8/8.5* | 11/11.7* | 5,6 | 7.1 | 8/8.5* |
| Efficiency | % | up to 110 | up to 109 | up to 109 | up to 109 | up to 109 | up to 109 | up to 109 | up to 109 |
| Heating circuit pump | Energy efficiency class A | Energy efficiency class A | |||||||
| Expansion tank capacity | AND | 12 | 12 | 12 | - | - | 12 | 12 | - |
| Maximum electrical power consumption | IN | 110 | 110 | 110 | 135 | 175 | 110 | 110 | 175 |
| Dimensions (W x D x H) | mm | 440x393x855 | 440x393x855 | ||||||
| Total weight | kg | 42 | 42 | 42 | 45 | 45 | 45 | 45 | 48 |
| Electrical connection | Volts/Hz | 230/50 | 230/50 | ||||||
Condensing gas centrals
Wolf combines condensing gas boilers with efficient layered domestic hot water tanks. The offered solutions of units in the standing version - CGS and hanging - CGW create compact boiler rooms that take up little space. An inseparable element of condensing units, providing great convenience of using domestic hot water is the layered domestic hot water tank. The patented Turbo-Stop system of distributing hot and cold water streams is designed to muffle the stream, causing radial distribution of water.
This ensures a layered water flow in the tank and its even loading and collection. As a result, the domestic hot water efficiency reaches up to 25 l/min., which means availability in the first 10 minutes of up to 216 liters, and within an hour even up to 681 liters! With a capacity of 90 liters, the tank parameters are comparable to traditional heaters with a capacity of up to 200 liters. In the event of the tank being empty, the unit provides, through a stainless steel plate exchanger, a flow heating function - hot water is therefore available in all conditions. It is not without significance that the tank is equipped with very effective insulation, guaranteeing minimal heat losses of even less than 0.9 kWh per day.
Cooperation of the boiler with the solar heating system
Wolf brand condensing devices work very well with solar heating systems. Additionally, Wolf offers CSZ solar condensing gas units with integrated, bivalent DHW tanks, creating compact heating devices using energy from renewable sources. The 310-litre solar DHW tank integrated with the boiler is equipped with 2 large-surface heat exchangers, ensuring short heating times and high continuous power.
The intelligent tank loading system helps to achieve excellent parameters, which, in combination with the boiler control, allows, for example, for automatic blocking of the boiler in order to maximize the use of solar energy. The intelligent BM weather control, which is standard equipment, watches over the economical use of energy. In order to minimize the consumption of electricity, modulated circulation pumps of energy class A were also used in the heating and solar circuits.
Advantages of CSZ solar condensing gas units
- Solar panel with a condensing gas boiler with a capacity of 11 kW, 20 kW or 24 kW and a bivalent hot water tank with a capacity of 310 years
- Complete unit equipped with the necessary accessories: expansion tank (12 l), solar pump group, diaphragm expansion tank for the solar installation (25 l), solar fluid tank (10 l) and SM1 solar installation control module.
- Boiler efficiency up to 110%.
- ALU-Pro aluminum-silicon heat exchanger, coated with a polymer layer.
- Joint control of the boiler and solar system allowing for optimal use of solar energy.
- Intelligent BM weather controller as standard equipment.
- Modulating circulation pumps of energy class A.
- The compact design allows the unit to be mounted on a surface of 0.6 m2.
- 2-year warranty on the heating boiler.
- 5-year warranty on the domestic hot water tank
Construction diagram of the CSZ solar control unit
- Gas condensing boiler with efficiency up to 110%.
- Solar enamelled domestic hot water tank with a capacity of 310 l with 2 smooth pipe heat exchangers and a protective magnesium anode.
- Aluminum-silicon boiler heat exchanger made in ALU-Pro technology.
- Expansion vessel with a capacity of 12 l.
- Domestic hot water tank heat exchanger
- Control system with BM control module
- Energy-saving, modulating circulation pump, energy class A.
- Solar pump group with modulating pump of energy class A.
- DHW tank heat exchanger (solar circuit).
- SM1 module for modulating pump, controlling the operation of the solar installation (integrated with the pump group).
- Solar expansion tank with a capacity of 25 l.
- Solar fluid tank with a capacity of 10 l.
- Perfect insulation of the domestic hot water tank made of PU foam in a foil jacket.