ecoTEC pro - Vaillant
ecoTEC pro - Vaillant
ecoTEC pro - Vaillant
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18 Glossary<br />
Air/flue gas duct<br />
An air/flue gas duct is a line system with two separate flow<br />
channels. The flue gas is routed into separate chambers at<br />
the same time as the required combustion air is pumped to<br />
the boiler. The air/flue gas duct can be designed as a concentric<br />
or adjacent double flue gas pipe (the flue gas channel<br />
is sealed from the air channel). Floor-standing boilers<br />
and gas-fired wall-hung boilers can be operated as roomsealed<br />
through the air/flue gas duct. As a result, boilers can<br />
be installed in new buildings that do not offer sufficient<br />
combustion air for open-flued heaters due to their airtight<br />
construction.<br />
Burner anti-cycling time<br />
The burner is electronically locked for a specific time after<br />
each time it is switched off ("restart interlock") to avoid frequent<br />
switching on and off of the burner (energy losses)<br />
and to extend the working life of the boiler.<br />
The burner anti-cycling time is only activated for the heating<br />
mode.<br />
Hot water handling is not affected if burner anti-cycling<br />
time is running.<br />
Calorific value<br />
Unlike the heating value, the calorific value of a fuel<br />
describes the total useable heat during combustion, based<br />
on the quantity of fuel used, including the condensation<br />
heat in the steam.<br />
The energy contained in steam can also be used if the<br />
steam liquefies on cooling.<br />
Compact thermal module<br />
The compact thermal module is an assembly of <strong>Vaillant</strong><br />
condensing units that consists of the following four main<br />
components in the <strong>ecoTEC</strong> <strong>pro</strong>: speed-regulated fan, gas-air<br />
mixture fitting, gas supply (mixture pipe) for the premix<br />
burner and premix burner<br />
Condensing technology<br />
Technology which maximises the use of the calorific value<br />
of the fuel. The flue gas is cooled until the water vapour<br />
that it contains condenses. The condensation heat that this<br />
releases can also be used.<br />
In particular, the flue gas losses are greatly reduced. The<br />
losses from conduction of heat and radiation are also<br />
reduced by the lower system temperatures. The entire heating<br />
installation should therefore be designed for low system<br />
temperatures (flow/return temperature) for the effective<br />
use of the calorific value. The level of efficiency attainable<br />
for boilers is always given based on the heating value of the<br />
gas. Due to the additional condensation heat used, the calculated<br />
values can exceed 100 %.<br />
Glossary 18<br />
Digital information and Analysis system (DIA)<br />
The <strong>Vaillant</strong> <strong>ecoTEC</strong> <strong>pro</strong> boiler is fitted with a digital information<br />
and analysis system (DIA). If additional settings are<br />
required, which have not been configured using the installation<br />
assistant, you can view and modify further parameters<br />
using the DIA.<br />
eBUS<br />
eBUS is an abbreviation for energyBUS. The eBUS is a special<br />
bus used in heating technology, which assists the communication<br />
between intelligent components in the heating<br />
technology. In a <strong>Vaillant</strong> system, up to eight different heaters<br />
can be connected via the eBUS.<br />
The eBUS communications <strong>pro</strong>tocol simplifies the controlrelated<br />
linking of different system components within a<br />
heating installation. It <strong>pro</strong>vides particular flexibility for retrofitting<br />
and expanding the system. This simplifies the<br />
installation of boiler cascades or the subsequent addition of<br />
components such as solar hot water generation.<br />
The eBUS <strong>pro</strong>vides extended facilities for connecting controllers.<br />
Multi-functional module<br />
The multi-functional module is an accessory that controls<br />
additional functions or components in combination with<br />
<strong>Vaillant</strong> boilers with eBUS electronics. It also allows you to<br />
select and control 2 in 7, e. g. circulation pump, external<br />
heating pump, external solenoid valve or response from the<br />
flue non-return flap.<br />
Installation and maintenance instructions <strong>ecoTEC</strong> <strong>pro</strong> 0020129672_03 65