Frequently Asked Questions

Frequently Asked Questions

Condensing appliances are designed to condense the water vapour contained in the exhaust in order to transfer the resulting heat to the heating fixture. Since they use condensed heat in the exhaust, they consume less gas and they work more efficiently compared to conventional appliances.

The combi boiler operating independently of the ambient air, thanks to its closed combustion chamber, is called "hermetic combi boiler". The hermetic combi boiler supplies the fresh air required for combustion from outside using the fresh air duct of its own flue. The waste gas generated after the combustion is discharged from the flue duct of the boiler to the external atmosphere. Since hermetic combi boilers perform air exchange from the outside through their own flue ducts, the chimney outlets should be installed outside.

Flue type combi boilers are the appliances that take in the oxygen needed to burn the gas from the indoor environment and discharge the waste gas outside with the help of a chimney. Since they do not have their own chimneys, they require the use of the flue duct of the indoor space where they are located. Besides the legal-technical obligations, in terms of health, it is also necessary for the chimneys in the indoor spaces to conform to the standards and to have strong draught. Since the appliances referred to as "flue type" take in the fresh air needed for combustion from the indoor environment where they are located, this location must have a ventilation hole that opens directly to the outdoors and is never blocked.

Improving the insulation of the building, using the room controllers (described below) and using thermostatic valves will significantly reduce fuel consumption.

The central heating system and combi boiler system are preferred, depending on the heating habits of the building residents and the insulation characteristics of the apartments. Combi boilers are preferred more compared to the central heating system because they offer the user the freedom to heat at any time according to their needs. A condensing boiler is the most economical heating solution among all combi boilers. You can get a free of charge assessment service from the nearest dealer so you can choose the most suitable appliance for your home. You can find a full list of our dealers on our website.

Condensing gas-fired appliances cannot be connected directly to the chimney. A special exhaust fume pipe is required. These can be combined with existing classic chimneys.

While selecting an appliance, the purpose of the space, the requirement of domestic water use and heating needs should be taken into account. You can get a free of charge assessment service from the nearest dealer so you can choose the most suitable appliance for your home. You can find a full list of our dealers on our website.

Temperature setting: Lowering the temperature just 1°C provides a 6 percent energy saving. Ventilation causes heat loss and the makes the heating system consume more energy to keep the heat at a constant temperature. Room thermostats allow the system to operate more efficiently by enabling the device to go into economy mode when no one is at home or in the night-time. If the heating system does not detect the outdoor temperature, this causes an unnecessary flow of heat and loss occurs. The use of a multi-stage pump reduces the amount of electrical energy required to distribute heat to the building.

Contrary to popular belief in the market, there is no limit of "the minimum number of panel radiators to use. An adequate number of panel radiators should be installed depending on the heat requirement of the environment.

While condensing appliances are running, they condense the water vapour in the exhaust and convey the obtained heat to the fixture. The water condensed and liquefied during this process is discharged with the help of a "condensing drain". The water drained here has nothing to do with the water in the fixture pipes.

The devices that set the room temperature by sending commands to turn the combi boilers on or off are called room thermostats. . In these type of systems, the combi boiler determines the extent of the need for heat depending on the temperature of the installation water and it fluctuates accordingly. Increasing the room temperature by 1°C unnecessarily increases annual fuel consumption by 10 percent on average. This is why the room thermostat, which makes your combi boiler operate depending on the room temperature, is an important solution.

The room controller sends commands to the combi boiler to run or to stop depending on the room temperature, and it adjusts the operating level by automatically determining your heating needs. In such systems, combi boilers modulate according to the change in room temperature and save more energy compared to a room thermostat. Increasing the room temperature by 1°C unnecessarily increases annual fuel consumption by 10 percent on average. For this reason, a room controller that operates the combi boiler according to the room temperature is a more efficient solution compared to a room thermostat.

Timers are combi boiler accessories that allow you to program when you want your combi boiler to run and stop.

Weekly timer room thermostats/room controllers are the devices with which you can program the times of day and the days of the week when you want your combi boiler to run and stop to control the room temperature.

Thermostatic radiator valves, which enable each room's temperature to be controlled separately, reduce fuel consumption. If the room gets warmer due to the sun or, for example, when guests fill the room, the thermostatic valve immediately interferes and prevents unnecessary fuel consumption, even if the combi boiler or controller is in another room.

Your request to have your combi boiler commissioned can be made via the internet by the Bosch Thermotechnology Dealers, where you purchased your combi boiler with the help of a password held only by our authorized dealers.

The water pressure in the heating circuit should stay between 1.2 and 1.5. When the combi boiler is running, the water expands upon the heat increase of the fixture and the pressure rises slightly. When the fixture cools down, the pressure returns to its original state.

The Bosch combi boiler is very suitable for the conditions in Turkey. It operates smoothly under voltage fluctuations between 160 and 250 volts.

Bosch combi boilers operate quite silently with a sound level of min. 32 dB (A)* and max 36 dB (A)*. This sound level is quieter than a library environment.

*The sound level of conventional appliances with double stage fan.

There is a sensor in the combi boiler that measures the water temperature of the fixture. the value measured by the sensor falls to 8°C centigrade, frost protection starts to operate. Based on the heat requirement, the pump and the burner start to operate to increase the installation temperature to 12°C and then stop.

The turbine is the part that measures the flow of the domestic water you use. . It helps to increase or decrease the power of the appliance according to the amount of water used. The temperature remains constant even if the amount of the water you use changes.

*The flow rate is the volume of the water passing through the unit at any time from any section where fluid flows.

Security comes first in all flue type combi boilers. For this reason, only fixed steel chimneys should be used in flue type combi boilers.