Wolf condensing boilers

Gas boilers and condensing boilers , CGB and CGB-K heating devices from Wolf combine the highest quality devices, maximum comfort of use with care for the environment and energy saving.

German quality condensing boiler

CGB, CGB-K condensing boilers, like all Wolf devices, are 100% manufactured in the German factories of Wolf GmbH in Mainburg. Moreover, the same product, with exactly the same standard of equipment and quality, is dedicated to both the German and any other market - including the Polish one. This means that when using CGB, CGB-K boilers, you can enjoy the famous German quality every day.

Gas wall boilers CGB (single-function), CGB-K (double-function) from Wolf GmbH can perfectly use the energy contained in the fuel. They use an advanced condensing technique, which allows for thermal efficiency of up to 110%. Condensing technology enables such high efficiency to be achieved by using the heat of water vapor contained in the exhaust gases. By lowering the exhaust gas temperature below the dew point temperature, we obtain a significant amount of additional heat above 95%, and the amount of this gain can reach up to 15%, as is the case in CGB and CGB-K boilers. As a result, CGB, CGB-K condensing boilers from 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

1. Exhaust gas discharge, air intake.
2. Fan.
3. Diaphragm expansion vessel with capacity 12 years old
4. Torch.
5. Aluminum-silicon heat exchanger made using ALU-Pro technology.
6. Condensate drain.
7. Energy-saving circulation pump of energy class A.
8. 3-way valve (combination boiler).
9. Adjustment system.
10. Electrical connections.

ALU-Pro technology allows maximum heat recovery

In order to properly use the condensing technique and maximally recover the heat from gas combustion along with the latent heat of water vapor contained in the exhaust gases, it is necessary to use an appropriate heat exchanger. Therefore, CGB and 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, it uses ALU-Pro technology and is covered with a polymer layer that increases combustion efficiency and cleanliness of the combustion chamber.

Maintenance and service work can be carried out at the front of the boiler

CGB and CGB-K boilers are refined down to the smallest detail. They can be easily installed practically anywhere, as there are no restrictions regarding 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. Moreover, the heat exchanger of CGB and 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 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 the economical use of energy, enabling the operation of up to 7 heating circuits and operation in weather mode. Its extraordinary ease of use will be appreciated by the user every day during many years of failure-free operation.

Advantages of CGB, CGB-K condensing boilers

• Gas condensing boiler in 8 types:
• -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 structure 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.
• Diaphragm expansion vessel with capacity 12 liters integrated with the boiler (CGB 11-24).
• Extremely easy to use - cooperation with the intelligent WRS control system (up to 7 heating circuits, weather control).
• 3-way valve for cooperation with a domestic hot water heater in standard equipment (combination boiler).
• 5-year warranty for the Wolf heating system.

Condensing gas units

Wolf combines condensing gas boilers with efficient stratified hot water tanks. The offered solutions of the units in the standing version - CGS and hanging version - CGW create compact boiler rooms that take up little space. An inherent element of condensing units, ensuring great convenience of using hot tap water, is a layered hot water tank. The patented Turbo-Stop system for distributing hot and cold water streams is designed to muffle the stream, causing radial water distribution.

This ensures a layered flow of water in the tank and uniform loading and consumption. As a result, the domestic hot water capacity reaches up to 25 l/min, which means the availability of up to 216 liters in the first 10 minutes, and even up to 681 liters within an hour! With a volume of 90 liters, the parameters of the tank are comparable to those of traditional heaters with a capacity of up to 200 liters. If the tank is empty, the unit provides a flow heating function through a stainless steel plate exchanger - hot water is available in all conditions. It is also important 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 condensing devices work very well with solar heating systems. Additionally, Wolf offers CSZ solar condensing gas units with an integrated, bivalent hot water tank, creating compact heating devices using energy from renewable sources. The solar hot water tank with a capacity of 310 liters, integrated with the boiler, is equipped with 2 heat exchangers with a large surface, ensuring short heating time and high continuous power.

An intelligent tank loading system helps to achieve perfect parameters, which, in combination with boiler regulation, allows, for example, automatic blocking of the boiler to maximize the use of solar energy. The intelligent BM weather control, which is standard equipment, ensures efficient use of energy. To minimize electricity consumption, modulated energy class A circulation pumps are also used in the heating and solar circuits.

Advantages of solar condensing CSZ 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
• The complete unit is equipped with the necessary accessories: expansion vessel (12 l), solar pump group, diaphragm expansion vessel 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, covered 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 units to be installed on an area of 0.6 m2.
• 2 years warranty for the heating boiler.
• 5-year warranty for the hot water tank

Construction diagram of the CSZ solar control panel

1. Gas condensing boiler with efficiency up to 110%.
2. Solar enamelled hot water tank with a capacity of 310 l. with 2 smooth pipe heat exchangers and protective magnesium anode.
3. Aluminum-silicon boiler heat exchanger made using ALU-Pro technology.
4. Diaphragm expansion vessel with capacity 12 years old
5. Heat exchanger for the domestic hot water tank
6. Control system with BM programming module
7. Energy-saving, modulated circulation pump of energy class A.
8. Solar pump group with modulated energy class A pump.
9. Heat exchanger of the domestic hot water tank (solar circuit).
10. SM1 module for a modulated pump, controlling the operation of the solar installation (integrated with the pump group).
11. Solar expansion vessel with capacity 25 years old
12. Solar fluid tank with a capacity of 10 years old
13. Perfect insulation of the hot water tank made of PU foam with a foil jacket.

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