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Start-up
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BA ROTEX A1 BO - 10/2007
Different set-ups
– The oil condensing boilers in the series A1 BO are basically designed for
operation independent of ambient air
. They are
fitted with a concentric flue gas/air supply pipe DN 80/125. ROTEX recommends operating the oil condensing boiler
independently of ambient air. If possible, choose this set-up!
– When operating with partly room air independent or room air dependent modes, the installation room must have a ventilation
opening of at least
150 cm
2
to the open air.
– When operating partially independent of ambient air and with ambient air dependent operation, the installation room must be
free from aggressive vapours (e.g. hair spray, perchloroethylene, carbon tetrachloride), heavy dust formation and high
atmospheric humidity (e.g. utility room).
Set-up in garages
The oil condensing boilers of series A1 BO are basically suitable for being set-up and operated in garages. Requirements:
– Operation independent of ambient air,
– A durable instruction manual placed in a very visible place near the boiler,
– The construction must include a protective device against mechanical damage (vehicle!) for the entire system (e.g. bracket
or deflector).
Set-up in the attic
If the A1 condensing boiler 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 through
a separate pump.
Please note the following for set-up in the attic:
– Install the boiler in a leakproof tray and secure through a float switch (connection through additional plug strip ZSÖ,
15 40 67
).
– Use only a metallic filter cup (never Plexiglas).
– To prevent malfunctions when starting or in operation of the burner the
minimum height of the flue pipe must be 2 m
.
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.
When installing with an adjacent storage tank the boiler should be mounted on a plinth at least 80 mm high.
Water quality
If the oil condensing boiler is connected to a heating system with steel pipelines, radiators or non-diffusion-proof floor heating
pipes, slurry and chips could enter the boiler and cause blockages, overheating or corrosion. For this reason ROTEX recommends
fitting a dirt filter in the heating return flow.
If filling and additional water has a high degree of hardness (Sum of alkaline earths >3 mol/m
3
), measures need to be taken to
stabilise or soften hardness.
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
installation 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.
ROTEX urgently recommends using a
suction aggregate
, because if you use a pressure aggregate, hydraulic
oil could escape if there is a fault.
