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FA ROTEX A1 BGe - 02/2014
3 x Product description
3.2 Brief description
The ROTEX condensing boiler in the A1 BG series is a fully pre-
assembled gas condenser unit.
Operating instructions
The ROTEX condensing boiler A1 BG is designed to be operated
independently of the room air (concentric flue gas/air inlet piping).
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 pre-
heating the combustion air.
– Contamination from the environment of the burner are not
suctioned in. The heating room can thus be used as a
work-space, laundry room etc. at the same time.
– Possible to set up in loft areas or attic.
The collected condensate is neutralised in the integrated con-
densate box and then conducted into the drainage system
through a plastic tube.
Safety management
The safety management of the condensing boiler is handled en-
tirely by the electronic controller. This effects a safety switch-off
in the event of water shortage, gas shortage or undefined oper-
ating states. A corresponding fault signal provides an engineer
with all the necessary information for troubleshooting.
Electronic control
An electronic digital controller combined with the "intelligent" au-
tomatic firing unit of the burner controls all heating and hot water
functions automatically for the direct heating circuit and a storage
tank charging circuit.
Optionally, connected mixer modules RoCon M1 ( 15 70 68)
can be used to connect and regulate one or more mixed circuits.
All settings, displays and functions are carried out using the inte-
grated RoCon B1 control unit. The display and operating ele-
ments offer convenient operating possibilities.
As an option, for increased convenience, a digital room controller
(RoCon U1, 15 70 34) is available as an option. This can be
used as a remote control and a room thermostat.
Using the optional gateway (RoCon G1, 15 70 56), the con-
troller can be connected to the internet. This means that the
ROTEX A1 can be controlled remotely via mobile phone (using
an App).
Condensing technology
The calorific value engineering makes optimum use of the energy
contained in the heating gas. 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.
A part of the water vapour generated on combustion of the gas
thus condenses. The condensation heat is fed to the heating, in
contrast to low-temperature boilers, thus making it possible to
achieve over 100% efficiency.
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