Ochsner Air Eagle 414, Operating And Installation Manual

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BA_OCHSNER AIR EAGLE_414_717_V06_EN.docx Page 45 of 76
7 Heating system
The heating water and system pressure should be
checked regularly by the system operator and
corrected in case of deviations (pressure too
high/low). The flow rates at the heat sink system
(WNA) are monitored by the integral flow sensor.
The specified system maintenance intervals and
system checks must also be observed.
If major modifications or pipe breakages require
draining and subsequent replacing of a large
proportion of the heating water, this should be
done in the presence of OCHSNER customer
service or by an authorised OCHSNER authorised
partner (see enclosed logbook). In the case of non-
routine refilling (e.g. after modifications or pipe
breakages), a current water assessment must be
prepared, and, on the basis of this, the heat sink
system must be refilled, with additives if required,
by the installer.
7.1 Quality of heating water
Use the correct fill water that is suitable for the
components of your heating system. We
recommend fill water prepared according to
Guideline VDI 2035-2.
A high pH value and low electrical conductivity in
the fill water will reduce to a minimum the risk of
corrosion to iron and copper materials, as long as
there is also low oxygen content. This will also
minimise scaling (calcification).
Fill water characteristics
pH value at 25°C 8.5-10
Electrical conductivity at
25°C < 100 μS/cm
Oxygen content < 0.05 mg/l
Chloride < 30 mg/l
Unsuitable fill water can damage your
system due to scaling and corrosion. If
necessary, ensure that the fill water is
professionally softened and
demineralised.
7.2 Pressure maintaining system
For the operational reliability of your
system in defrosting or cooling mode, it
is important that the hydraulic safety
and pressure maintaining devices are
sufficiently sized and inspected annually
according to the relevant standards.
CAUTION
The closures provided are only for
transport. Replace them with suitable
plugs if the DHW flow or return is not
being used!