Atag XL-F 105, Manual

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Norm and regulations
Water and hydraulic system
Heating water quality
Fill the installation with drinking
water.
In most cases, a central heating
installation can be filled with water
according to the nationally valid
regulations, whereby a treatment
of the water is not necessary. To
avoid problems, the quality of the
filling water must conform to the
requirements in Table 1. If the
filling water should not conform to
these requirements, then it is
recommended to treat the water
correspondingly (see VDI2035).
Warranty claims become invalid if
the system has not been flushed
during installation, or if the filling
water quality does not conform to
the ATAG requirements (see Tab-
le 1).
For situations that require clarifica-
tion, please consult ATAG Heating
Solutions. Failure to comply with
manufacturers instruction, may
have an affect on terms of warran-
ty.
Installation:
- The use of groundwater, demine-
ralized water and distilled water, is
not permitted (an explanation of
these terms can be found on the
next page).
- If the drinking water quality lies
within the limits of the values in
Table 1, then one can proceed
with the installation of the system
and the flushing of the equipment.
- Residues of corrosion products
(magnetite), assembly materials,
cutting oil and other undesirable
products, must be removed during
the flushing operation.
- Another possibility for removing
dirt is the use of a filter. The filter
type must conform to the system
specific requirements and the type
of contamination. ATAG recom-
mends the use of a filter. In such a
case, one should make sure to
take the entire piping system into
consideration.
- The central heating installation
must be de - aerated properly, be-
fore it is put into operation. Please
review the Chapter
“ Commissioning ” in this regard.
- If a regular topping up of water is
required (> 5% per year), then
there is a problem with the system
that must be rectified by a certified
technician. Regular topping up
with fresh water and oxygen adds
lime to the system, which leads to
deposits
.
- If an anti - frost agent or other
additives are used, then it must be
regularly checked to ensure that
the filling water quality conforms to
the manufacturer requirements.
- Inhibitors may only be used after
consultation with ATAG.
- The use of such agents must be
protocolled.
Floor heating
When a floor heating system is
connected that uses plastic pipes,
it must be ensured that it conforms
to the standard DIN 4726
- 4729. If
the system does not fulfil the stan-
dard, then a system separation
must be applied.
If the regulations with regard to
plastic piping are not observed, then
warranty claims become null and
void (see the warranty conditions).
Parameters Value
Water type
Drinking water
Softened water
pH 6.0 - 8.5
Conductivity (at in μ S/cm) Max. 2500
Iron (ppm) Max. 0.2
Hardness (°dH / °fH)
Installation volume/performance
<20 l/kW 1 - 12
Installation volume/performance
>=20 l/kW 1 - 7
Oxygen
Oxygen diffusion is not permitted during operati-
ons.
Max. 5% of the system volumes may be topped
up annually.
Corrosion inhibitors
See the Chapter "System water additives"
pH raising or lowering agents
See the Chapter "System water additives"
Anti - frost additives
See the Chapter "System water additives"
Other chemical additives
See the Chapter "System water additives"
Solid substances
Not permitted
Residues in the heating water,
which are not a component of
the drinking water are
Not permitted