Bedienungsanleitung A.O. Smith Epsilon EB 40 (Seite 12 von 48) (Englisch)

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Installation and Service Manual Epsilon-Series

6.2 Expansion vessel

The central heating system must be provided with an expansion vessel. The expansion

vessel which is used should be geared to the water content of the installation. The pre-

charge pressure depends on the installation height above the mounted expansion vessel.

See table 6.2.a.

The Solo boilers EB 40 and EB 50 are not provided with an expansion vessel

connection. When one of these Solo boilers is combined with a cylinder then

one has to take into account that the expansion vessel should be connected

between the three-way valve and the boiler circulation pump.

6.3 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 is treatment of this water 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 6.3.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 is not being ushed and/or the

quality of the lling water does not meet the specications recommended by

A.O. Smith. Always contact A.O. Smith 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 6.3.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. A.O. Smith 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 pur-

pose, 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 A.O. Smith has

approved their corresponding use.

choiceofexpansionvessel       table6.2.a

installation height above

the expansion vessel

pre-charge pressure

of the expansion vessel

5 m 0,5 bar

10 m 1,0 bar

15 m 1,5 bar

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