Atag XL75W - Heating Water Quality

29
Installation
Water and hydraulic system
Heating water quality
Fill the installation with
drinking water.
In most cases, a central heating
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according to the nationally valid
regulations, whereby a treatment of the
water is not necessary.
To avoid problems, the quality of
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requirements in Table 1.
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these requirements, then it is
recommended to treat the water
correspondingly (see VDI2035).
Warranty claims become invalid if the
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does not meet the requirements (see
Table 1).
If anything should not be clear, or in
case of deviations, always get in touch
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any changes are made without an prior
agreement/release by .
Installation:
- The use of groundwater,
demineralized 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
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equipment.
- Residues of corrosion products
(magnetite), assembly materials,
cutting oil and other undesirable
products, must be removed during
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- Another possibility for removing
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requirements and the type of
contamination. ATAG recommends
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In such a case, one should make
sure to take the entire system into
consideration.
- The central heating installation must
be de-aerated properly, before it is
taken into operation. Please check
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
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technician. Regular topping up
with fresh water adds oxygen and
lime to the system, which leads
to deposits.
- If an anti-freeze agent or other
additives are used, then it must be
regularly checked to ensure that the
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requirements.
- Inhibitors may only be used after
consultation with ATAG.
- The use of such agents must be
protocolled.
Floor heating
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connected that uses plastic pipes,
it must be ensured that it meet the
standard DIN 4726-4729. If the system
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system separation must be used.
If the regulations with regard to
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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 20°C in μS/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 2[\JHQGLႇXVLRQLVQRWSHUPLWWHGGXULQJRSHUDWLRQV
Max. 5% of the system volumes may be topped up annually.
Corrosion inhibitors See the Chapter "System water additives (inhibitors)"
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
Table 1