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4 Requirements for an accumulator
4
Requirements for an accumulator
4.1
The current versions of the relevant national standards must be observed.
Austria – H 5195-1, published 01/12/2010
Prevention of damage in closed-circuit hot water heating systems.
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Guidelines and Standards for an accumulator
Contamination:
Dirt and other contaminants represent significant contributory factors to corro-
sion. The introduction of contamination into the heating system must therefore
be prevented. This must be taken into consideration as early as the planning
stage.
The operator of the heating system is responsible for conducting tests on the
condition of the heating water.
Such tests must be conducted no less than every 2 years on heating systems with
a water capacity of up to 5000 litres and no less than once a year on systems
with a capacity of over 5000 litres.
Flushing water:
The water used for flushing the system prior to initial startup or re-commissioning
must be clear, odourlessand free of suspended matter below 25 µm.
A system report must be prepared for every system after initial startup and re-
commissioning.
Replenishing water must be odourless and free of suspended matter below 25
µm. If the annual amount ofreplenishing water exceeds the capacity of the expan-
sion tank, the following parameters must be compliedwith.
Water capacity
Up to 1000 litres
Über 1000 – 5000 litres
Über 5000 litres
Degree of German hardness
Up to 17
Up to 6
Up to 0,5
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Installation manual
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