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4.4 Installing the Oil condensing boiler
4.4.1 Selecting the installation site
The installation location for the ROTEX A1 BO must meet the fol-
lowing minimum requirements.
Installation height
– The bottom edge of the condensate drain connection on the
unit must be higher than the outlet height of the condensate
drainage hose, otherwise condensation can accumulate in
the drain.
If installing with adjacent storage tank, the boiler must be
installed on a plinth at least 80 mm high or a boiler support
frame (KU,
15 30 21).
Installation area
– The base is solid, even and horizontal, and has sufficient load
bearing strength. Install a pedestal if necessary.
– Observe the set-up dimensions (see section 4.1).
Installation room in general
– There are no special conditions for ventilation of the installa-
tion room for operation independent of the ambient air (using
a concentric air/flue system).
– In the event of limited room-air independent operation (sepa-
rate flue gas/ air intake) and in the event of room-air depend-
ent operation, the installation room must have a ventilation
opening of at least 150 cm
goes via an installation shaft to the outside, it must be rear
ventilated (see section 4.2.2).
– For partial ambient air-independent and for ambient air-
dependent mode, the installation room must be free from
aggressive vapours (e.g. hair spray, perchloroethylene, car-
bon tetrachloride), heavy dust formation and high atmos-
pheric humidity (e.g. washhouse).
Heating oil storage in the installation room
As a general rule, construction specifications allow up
to 5000 litres of heating oil to be stored in the installa-
tion room (according to the Firing Ordinance of the
state) if the building is in Building Category 1 and the
installation room is not a living room.
Set-up in the attic
If the ROTEX A1 BO is installed in the attic and the oil is stored
in the rooms below it, the oil pump of the burner is generally not
adequate. Since the vacuum on the suction side exceeds the
value of 0.4 bar, the oil must be supplied to the burner using a
separate pump. ROTEX strongly recommends using a suction
aggregate.
The minimum height of the flue gas pipe must be 2 m in order
to avoid malfunction at start or during operation of the burner.
CAUTION!
If using a pressure aggregate, oil could escape if there
is a fault. Escaping oil can cause serious damage to
the environment.
Install boiler in a leakproof tray and secure using a
float switch (connection through additional plug rail
(ZLÖ,
15 40 71).
Use only a metallic filter cup (never Plexiglas).
FA ROTEX A1 BOe - 02/2014
2
to the outside. If the flue gas line
4
x
Set-up and installation
Surface temperature, minimum distance
WARNING!
The storage tank plastic wall on the ROTEX A1 BO
can melt under the effects of external heat (>80 °C)
and, in the extreme case, can catch fire.
The ROTEX A1 BO can only be set up at a
minimum distance of 1 m from other sources of
heat (>80 °C, e.g. electric heaters, gas heaters,
chimneys).
Fig. 4-5
Minimum distance for the installation of the A1 BO
(for legend see tab. 4-2)
– When operating independently of the ambient air with nomi-
nal output, the design does not allow temperatures > 70 °C on
any component outside the unit panels. Therefore, no mini-
mum distance is required to components made with flamma-
ble materials.
– A minimum distance of 50 mm between the flue gas duct and
flammable components should be maintained in a partial
room air-independent and ambient air-dependent mode (sep-
arate flue gas/air intake line).
– Do not store or use easily inflammable and easily combustible
substances directly next to the ROTEX A1 BO.
A flue gas temperature sensor connected to the
ROTEX A1 BO controller effects a safety shutdown if
the flue gas temperature is too high.
13
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