Exhaust terminal DN80 - stainless steel

Product detailed description

An end terminal for the flue gas exhaust - fitted to the outer end of a condensing boiler's separate flue gas outlet.

Exhaust terminal DN80 - stainless steel

Frequently asked questions

• How exactly do I choose the right output for a condensing boiler? The starting point 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 estimate roughly 60-100 W per m² of floor area for a normally 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, ceiling height, the number and quality of windows, and the building's orientation. A boiler oversized for the required 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 heat the house adequately on freezing 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 by burning gas - in a conventional boiler this vapour leaves unused through the flue, whereas 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 roughly 105-110% relative to the calorific value of the gas, compared with 85-92% for conventional boilers.
• What type of flue gas outlet 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 outlet and combustion air intake routed through an outer wall or the roof - so a working chimney is not needed. The exact type and maximum length of the outlet (depending on the 60/100 or 80/125 mm diameter) can be found in the technical documentation for the specific model, or you can consult our customer service.
• What does the ErP energy class stated for the boiler mean? This is a mandatory efficiency label for heating appliances under the EU ErP (Ecodesign) directive, similar to the energy labels used for refrigerators. Condensing boilers typically achieve class A, or higher when combined with room control (e.g. A+ when using weather-compensating control together with a room thermostat).
• Can I install and connect this boiler myself? No. Connection to the natural gas supply, the electrical network and the flue gas outlet is, by law, the exclusive responsibility of a person holding the relevant qualification (most often an authorised service technician of the given brand or a certified gas appliance inspector). 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 so that the warranty remains valid even after its standard expiry (an extended warranty for regular servicing is common especially with the Vaillant, Protherm and Viessmann brands). The exact warranty terms can be found 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, possibly 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.