Atag Q 25S Installation & Servicing Instructions

Installation & Servicing Instructions ATAG Q-Series
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6.3 Underoor heating system (plastic pipes)
When connecting or using an underoor heating system, designed with plastic pipes, or
plastic pipes are used elsewhere in the installation,one should ensure that the plastic
pipes used comply with the DIN 4726/4729 standard. It is set out in this standard that the
pipes may not have oxygen permeability higher than 0.1 g/m³.d at 40°C. If the system
does not comply with this DIN standard, the underoor heating component will have to
be separated from the central heating appliance by means of a plate exchanger.
No recourse can be made to the terms of the warranty in the event of failure to
observe the regulations pertaining to plastic underoor heating pipes.
6.4 Water quality
Fill the installation with drinking water.
In most cases, a heating system can be lled with water according to national standards
for water and treatment of this water is not necessary.
In order to avoid problems with the CH-installations, the quality of the lling water has to
meet the specications mentioned in table 6.4.a:
If the lling water does not meet the required specications, you are advised to treat the
water to such an extent that it does meet the required specications.
The warranty becomes invalid, if the installation has not been ushed and/or
the quality of the lling water does not meet the specications recommended
by ATAG Heating UK Ltd. Always contact ATAG Heating UK Ltd in advance, if
things are not clear or you wish to discuss any deviations. Without approval, the
warranty becomes invalid.
Installation:
- The use of groundwater, demi-water and distilled water is prohibited. (on the next
page you will nd an explanation of these denitions)
- If the drinking water quality meets the specications mentioned in table 6.5.a, you
can start ushing the installation before installing the device.
- Whilst ushing, corrosion products (magnetite), tting products, cutting oil and other
undesirable products have to be removed.
- Another possibility is to remove the pollution by installing a lter. The lter type has
to t the type and grain size of the pollution. ATAG Heating UK Ltd recommends lter
usage.
- In this case, the whole piping system should be taken into consideration.
- The CH-installation has to be properly vented before using the system. For that
purpose, we refer to the commissioning chapter.
- If a regular water top up is required (>5% on an annual basis), then there is a structural
problem and an installer has to solve the problem. Regularly adding fresh water to the
system also adds additional calcium and oxygen implying that magnetite and calcium
residues can continue. The result may be blockages and/or leakages.
- The use of anti-freeze and other additives requires periodical quality checks of the
lling water in accordance with the period laid down by the additives supplier.
- Chemical additions are to be avoided and should only be used after ATAG Heating
UK Ltd has approved their corresponding use.
- Should you wish to achieve the required water quality by using chemical additives,
then this is your own responsibility. The warranty on the product delivered by
ATAG Heating UK Ltd expires, if the water quality does not meet ATAG Heating's
specications or the chemical additives have not been approved by ATAG Heating
UK Ltd.
- On installation and during additions or changes at a later stage, ATAG Heating UK
Ltd recommends to keep a record of the type of water used, its quality at the time,
and if applicable, which additives and quantities were added.

Atag Q 25S Specifications

General

Brand	Atag
Model	Q 25S
Category	Boiler
Language	English