Bosch Condens GC8700iW 30 P + WST 120-5 O + CR 400
Code: 8730850110Related products
Product detailed description
Dimensions and connections
- type: stationary, cylindrical
- with a usable capacity of 116 l
- suitable for combination with a wall-mounted condensing boiler
- hot water can be drawn from several points at the same time
- simple installation and economical operation
- option to connect a circulation circuit directly from the tank body (bacteriologically clean water)
- insulation made without the use of fluorinated and chlorinated hydrocarbons
- high corrosion resistance
- enamelled surface and built-in protective anodes ensuring compliance with environmental requirements and a long service life
In combination with the AF outdoor sensor operation as weather-compensated control is possible.
- Weekly heating programme with 6 switching points during the day.
- Two adjustable temperature levels.
- 2 hot water circuits, solar hot water heating, solar heating support.
- Choice of two optionally adjustable weekly programmes for the heating circuit.
- Programme for the circulation pump, holiday programme.
- Temperature controller class: VI
- Rated voltage: 10...24 V DC
- Rated current: 9 mA
- Temperature range: 5 - 30 °C
- Protection class: III
- Protection rating: IP 20
- Width: 123 mm
- Height: 101 mm
- Depth: 25 mm
Suitable for boilers: 8700i W / 8300i W / 5700i W/WT / 5300i W/WT/WM / 2300i W / 1200W
Frequently Asked Questions
- How exactly do I choose the output of a BOSCH condensing boiler? The basis is the calculated heat loss of the heated building (most reliably from the project documentation or an energy certificate). If you don't have a project, you can roughly estimate about 60-100 W per m² of floor area for a commonly insulated house built after 2000, or 100-150 W/m² for an older, non-insulated house - the exact figure, however, varies according to the number of floors, ceiling height, the number and quality of windows, and the building's orientation. A boiler oversized for its output switches on and off more often (so-called cycling), which shortens its service life and reduces efficiency; conversely, an undersized boiler will struggle to adequately heat the house on frosty days.
- Why is a condensing boiler more economical than a conventional one? A condensing boiler additionally makes use of the heat hidden in the water vapour produced when burning gas - in a conventional boiler this leaves unused through the flue, while in a condensing boiler it is cooled below the so-called dew point, the vapour condenses, and the released heat is returned to the heating circuit. Thanks to this, condensing boilers achieve an efficiency of approximately 105-110% relative to the calorific value of the gas, compared to the usual 85-92% for conventional boilers.
- What type of flue does this boiler need? Most modern condensing boilers are so-called turbo boilers (with a sealed combustion chamber) and require a concentric (coaxial) or separate flue and combustion air supply routed through an outer wall or roof - so a functional chimney is not required. You'll find the exact type and maximum length of the flue (according to a diameter of 60/100 or 80/125 mm) in the technical documentation for the specific model, or you can consult our customer service.
- What does the ErP energy class shown for the boiler mean? This is a mandatory efficiency label for heating appliances under the EU ErP (Ecodesign) directive, similar to the energy labels on refrigerators. Condensing boilers commonly achieve class A, or higher in combination with room controls (e.g. A+ when using weather-compensated control and a room thermostat).
- Can I install and connect this boiler myself? No. Connection to the natural gas supply, the electrical network, and the flue is, by law, reserved exclusively for a person with the relevant qualification (most often an authorised service technician of the given brand or a gas appliance inspection technician). After installation, the boiler must be commissioned by the manufacturer's authorised service, which is usually also a condition for the warranty to be valid.
- What about servicing and the warranty? Most manufacturers require a regular annual service inspection by an authorised service provider in order to keep the warranty valid even after its standard expiry (an extended warranty with regular servicing is common especially with the Vaillant, Protherm, and Viessmann brands). You'll find the exact warranty terms in the warranty certificate supplied with the boiler.
- What is included in the delivery of this specific product? The exact package contents (the boiler itself, and where applicable a hot water tank, room controls, and other accessories in the case of a set) are stated in the product name and in its technical parameters above on this page.
Additional parameters
| Category: | Condens 8700iW |
|---|---|
| Warranty: | 2 years |
| Weight: | 30 kg |
| Depth: | 25 mm |
| Height: | 101 mm |
| Protection: | IP 20 |
| Protection class: | III |
| Rated current: | 9 mA |
| Rated voltage: | 10...24 V DC |
| Temperature controller class: | VI |
| Temperature range: | 5 - 30 °C |
| Version: | floor-standing, cylindrical |
| Width: | 123 mm |
| With usable volume: | 116 l |
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(482 kB) Brochure Condens 8700iW
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(6,17 MB) Installation Instructions Condens 8700iW
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(4,46 MB) Operating Instructions Condens 8700iW
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(70 kB) Technical Data Sheet WST 120-5 O
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(7,19 MB) Installation Instructions (6.2 MB)
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(122 kB) Technical Data Sheet (37.8 kB)
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(7,19 MB) Installation Instructions (3.5 MB)
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(4,83 MB) Operating Instructions (4.5 MB)
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About the company
For more than 125 years, we have been supplying the market with efficient, easy-to-operate and at the same time reliable equipment that creates warm and cozy homes for people. Bosch Thermotechnology today offers its customers worldwide solutions for room climate, hot water and decentralized energy management.
Since 1932, the brands Junkers and Bosch have been united by a strong partnership. The merger enabled the combination of traditional craftsmanship with the most modern technology. Under the Bosch brand, we now focus on the future with intelligent building technology, in which thermal technology plays an important role.
The traditional brand Junkers continues, because history, tradition and experience are still embedded in every Bosch-branded product. Junkers means more than 120 years of proven technology and the highest quality for us; we proudly created a memorial for this brand with its own museum. At the company in Wernau, we present the continuation of the history and the life's work of the founder Hugo Junkers.
History
In 1886, Robert Bosch founded the "Workshop for Precision Mechanics and Electrical Engineering" in Stuttgart. This was the beginning of today's globally active company. From the very beginning, innovation and social responsibility were characteristic of the company.
1886 - 1905 - The history of the Bosch company begins with many first steps. Steps toward independence, into the automotive market, into markets outside Germany and into the main production hall.
1906 - 1925 - The company's first astronomical global upswing was brutally interrupted by World War I, after which the Bosch company had to transform and focus on innovation to cope with its consequences.
1926 - 1945 - The Bosch company coped with the speed of the economic crisis and the dictates of National Socialism through the power of innovation and perseverance, until World War II brought enormous challenges once again.
1946 - 1959 - At the end of World War II, the Bosch company lost its international branches for the second time. A large part of its production facilities lay in ruins. The following two decades were devoted to reconstruction, but also to entering new business areas.
1960 - 1989 - The period between the 1960s and 1980s was marked in the Bosch company by a transformation that turned it into a diversified group of independently managed divisions, a global company and a market leader in the field of automotive electronics.
1990 - 2016 - The Iron Curtain fell, new markets emerged in Asia and software opened up new opportunities for Bosch. The last three decades brought rapid economic change, which the company had to face head-on.
We are Bosch
Our mission explains what drives us, what we have in common and what we stand for. We want to leave a lasting mark in the world — a mark achieved by a unique, exceptional team.
Our values — what we build on
Our values reflect the way we do business: Our professional ethics in our dealings with our business partners, investors, employees and society.
Future and results orientation
We focus on results. This enables us to secure our future and at the same time
creates a solid foundation for socially beneficial projects of our company and the Robert Bosch Foundation.
Responsibility and sustainability
We act economically and responsibly in the interest of the entire society and the environment.
Initiative and consistency
We act proactively, take entrepreneurial responsibility and are consistent in pursuing our goals.
Openness and trust
We communicate important topics of our company in a timely and open manner. This represents the best foundation for a relationship based on trust.
Fairness
In our mutual contact and with business partners, we consider mutual fairness to be a condition of our success.
Reliability, trustworthiness, legality
We promise only what we can fulfill. We accept agreements as binding and respect and comply with the law in all our business transactions.
Diversity
We value diversity and promote it, because it enriches us and is a source of our successes.
Bosch in Slovakia
Bosch already had its first representation in former Czechoslovakia as early as 1920. It resumed business activities in Prague in the autumn of 1992 and opened its first branch in Bratislava the following year.
The company in Slovakia operates in three locations and employed more than 1,000 employees in 2020 (as of December 31, 2020). The consolidated turnover in 2020 reached 440 million euros.
The regional company represents the commercial, marketing and service activities of the company
Bosch products and services are designed to fascinate and improve the quality of life by providing innovative and useful solutions. Thanks to this, Bosch worldwide offers technologies that are "Created for life."
