Drinking Water (Zvshk Sheet As Per Din En 806-4) - TESTO 324 Instruction Manual

6 Using the product
Options
> [Options]
values is displayed in a line graph (zoom function available [▲],
[▼]).
> [Options]
in the same way.
> [Options]
default settings.
> [Options]
across the overall measuring time are displayed in a line graph.
6.2.6.

Drinking water (ZVSHK sheet as per DIN EN 806-4)

The drinking water pipes are tested for tightness before
commissioning using air/inert gas or water. For reasons of hygiene,
it is best if the pipes remain dry until shortly before commissioning
and do not undergo a main test using water. It is also
recommended that a pressure test be carried out with air as a
preventive measure against corrosion in metallic materials.
There are 2 different test types to choose from:
• Testing with air
The main test should be carried out with air if:
-
-
-
-
• Testing with water
The main test should only be carried out with water if testing is
taking place shortly before the commissioning of a drinking
water system. According to the ZVSHK sheet as per DIN EN
806-4, there are three different test methods. These depend on
various material properties.
The main test with water can only be carried out if:
-
56
→ Show Graphic: a section of past measuring
→ Manometer: The measuring values are displayed
→ Factory
→ Overall graphic
Following the main test, there is prolonged downtime to
eliminate the possibility of bacterial growth
Following the main test, the pipe system cannot remain
completely filled (e.g. frost period)
The corrosion resistance of a material of a partially-filled
pipe is compromised
In buildings with more stringent hygienic requirements (e.g.
hospitals), it may be necessary to use inert gases to
eliminate the risk of condensation of humidity in the pipeline.
From the main test up until the drinking water installation is
commissioned, the water is changed regularly (after 7 days
at the latest).
setting: the values are reset to the
curve: the measuring values