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Product description
9
FA ROTEX A1 BO - 10/2007
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Brief description
The ROTEX oil condensing boiler in the series A1 BO combined with the ROTEX controller to be ordered separately is
a premounted oil fired boiler unit.
Operating mode
The ROTEX oil condensing boiler A1 BO is designed in such a way that it can be operated independent of ambient air. The burner
suctions the combustion air directly in through an installation shaft or a double-walled flue gas pipe. This operating mode has
several advantages:
– The heating room does not need any ventilation opening into the open air and therefore does not cool down.
– Lower energy consumption.
– Additional energy recovery in the flue gas pipe through preheating the combustion air.
– Contamination from the environment of the burner are not suctioned in. The heating room can thus be used as a workspace,
laundry room etc. at the same time.
– Possible to set up in loft areas or attic.
– Possible to set up in garages.
The collecting condensate is neutralised in the integrated ROTEX condensate treatment unit and then conducted into the drainage
system through a plastic tube.
Safety management
The entire safety management of the oil condensing boiler is managed through an electronic control panel. If there is water
shortage, oil shortage or undefined operating conditions, there is a safety shutdown. A corresponding fault signal provides an
engineer with all the necessary information for troubleshooting.
Electronic control
An electronic digital controller combined with the "intelligent" automatic firing unit of the burner controls all heating and hot
water functions automatically for the direct heating circuit, an optionally available mixed heating circuit as well as a storage tank
charging circuit.
All settings, displays and functions are carried out by the ROTEX control. The ROTEX THETA 23R control or the
ROTEX ALPHA 23R control can be used according to the equipment version. The display and keyboard make it easy to use.
A digital room station (
THETA RS
,
15 70 18
) or a room temperature controller set (
THETA RFF
,
15 40 70
)
are available as option for greater convenience.
The room temperature control (
ALPHA RTR-E
,
17 51 26
) is available as option for greater convenience.
Condensing technology
Condensing technology makes optimum use of the energy contained in the heating oil. The flue gas is cooled down in the boiler
and in the flue system – when operated independently of ambient air – such that the temperature is below the dew point. Part
of the water vapour created on combustion of the oil thereby condenses. The condensation heat is fed to the heating, in contrast
to low-temperature boilers, thus making it possible to achieve over 100 % efficiency.
Fuel
The ROTEX oil condensing boiler A1 BO can be operated with standard or low sulphur heating oil (sulphur content < 50 ppm).
It is prepared for combustion of heating oil with biogenic content. As things currently stand, admixing bio heating oil up to 10%
(B10) is permitted without an additional conversion being required.
The ROTEX oil condensing boiler A1 BO 15bio is equipped with components that allow an admixture of bio-heating oil up to 20 %
(B20).
C
ondensate treatment
The condensate generated during the combustion in an oil condensing boiler has a pH value of 1.8 to 3.7. It must be neutralised
before it enters the drainage system.
The ROTEX condensate treatment unit fulfils the following functions:
– Removes floating particles in the settling basin,
– Neutralises the condensate in the shell limestone.
ROTEX recommends using EL low sulphur heating oil in order to achieve highest efficiency and to keep
maintenance expenditure low.
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