Bosch Condens GC8700iW 30 P + W 65 OB C + CT 200set
Code: 8730850127Related products
Product detailed description

Dimensions and connections

- design: wall-mounted, square
- suitable for installation below or next to the boiler with a usable volume of 63 l
- suitable for combination with a wall-mounted condensing boiler
- water connections at the top and bottom
- simple installation and economical operation
- option to connect a circulation circuit directly from the tank body (bacteriologically clean water)
- insulation manufactured without the use of fluorinated and chlorinated hydrocarbons
- high resistance to corrosion
- enamelled surface and built-in protective anodes ensuring compliance with environmental requirements and a long service life
BOSCH EASYCONTROL CT 200 set
- Easycontrol CT 200 - smart touchscreen controller - controlled via app (iOS, Android), colour: white
- 3 x Smart thermostatic head - wireless thermostatic head for controlling the temperature in individual rooms. Option to set a time program via Bosch Easycontrol
Bosch Easycontrol CT 200
- Smart controller for 1 heating circuit and domestic hot water preparation
- Option to set important functions directly on the touchscreen display, complete settings via the EasyControl app (for iOS, Android)
- Individual temperature setting in each room using smart thermostatic heads
- Presence detection via GPS
- The controller cannot be combined with other controllers, e.g. CW 400
- colour: white
- On: hot water is available at any time
- Automatic: water is heated according to a time program
- Off: the hot water function is switched off
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 project documentation or an energy certificate). If you don't have a project, you can roughly estimate around 60-100 W per m² of floor area for a typically insulated house built after 2000, or 100-150 W/m² for an older, uninsulated house - the exact figure, however, varies depending on the number of floors, room 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 lifespan and reduces efficiency; an undersized boiler, on the other hand, cannot sufficiently heat the house on freezing days.
- Why is a condensing boiler more economical than a conventional one? A condensing boiler additionally uses the heat hidden in the water vapour produced when gas is burned - in a conventional boiler this escapes 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. As a result, condensing boilers achieve an efficiency of approximately 105-110% relative to the calorific value of the gas, compared to a typical 85-92% for conventional boilers.
- What type of flue gas exhaust does this boiler need? Most modern condensing boilers are so-called turbo boilers (with a sealed combustion chamber) and require a coaxial (concentric) or separate flue gas exhaust and combustion air supply routed through an external wall or roof - so a functional chimney is not needed. You can find the exact type and maximum length of the duct (based on a diameter of 60/100 or 80/125 mm) in the technical documentation for the specific model, or consult our customer service.
- What does the ErP energy class shown for the boiler mean? This is the mandatory efficiency label for heating appliances under the EU ErP (Ecodesign) directive, similar to the energy labels on refrigerators. Condensing boilers typically achieve class A, or higher in combination with room control (e.g. A+ when using weather-compensated control and a room thermostat).
- Can I install and connect this boiler myself? No. By law, connection to the natural gas supply, the electrical network, and the flue gas exhaust may only be carried out by a person with the relevant qualification (most often an authorised service technician for 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 for the warranty to remain valid even after its standard expiry (extended warranty for regular servicing is common, especially for the brands Vaillant, Protherm, and Viessmann). You can 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 contents of the package (the boiler itself, and where applicable a hot water storage tank, room control, 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 |
| Color: | White |
| Version: | wall-mounted, square |
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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.









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