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WARNING!
Materials that do not adversely affect the qual-
ity of the water must be used for potable water
systems!
6.4 Noise
As can be seen in point 1.2.1, DEA are supplied
with different types of pumps and a variable
number of pumps. Consequently, the overall noise
level of all DEA variants cannot be listed here.
However, it is possible to approximate the overall
noise level using the noise value for an individual
pump of the type supplied. To do this, use the
individual pump noise value from the installation
and operating instructions for the pumps or from
the catalogue information on the pumps.
Example (DEA with 5 pumps)
Single pump
5 pumps, total
Overall noise level =
Calculation
Individual pump =
2 pumps, total
3 pumps, total
4 pumps, total
5 pumps, total
6 pumps, total
Overall noise level =
6.5 Scope of delivery
• Pressure boosting system,
• Installation and operating instructions of the DEA,
• Installation and operating instructions of the
pumps,
• Installation and operating instructions of the con-
trol unit,
• Works acceptance test certificate (in accordance
with EN 10204 3.1.B),
• Installation plan as required,
• Electrical circuit diagram as required,
• Installation and operating instructions of the fre-
quency converter as required,
• Additional sheet with the frequency converter
factory settings as required,
• Installation and operating instructions of the sig-
nal transmitter as required,
Spare parts list as required.
26
50
dB(A)
+7
dB(A)
57
dB(A)
...
dB(A)
+3
dB(A)
+4.5
dB(A)
+6
dB(A)
+7
dB(A)
+7.5
dB(A)
...
dB(A)
6.6 Accessories
Accessories must be ordered separately if needed.
The accessories included in the Wilo range are,
for example:
• Open break tank,
• Larger diaphragm pressure vessel (on the primary
side or the discharge side),
• Safety valve,
• Dry-running protection system:
• Protection against low water level (WMS) (Fig.4)
in supply mode (at least 1.0 bar) (already fitted
to the DEA if part of the order),
• Float switch,
• Low-water warning electrodes with level relay,
• Electrodes for tank operation (special acces-
sories on request),
• Flexible connection lines,
• Compensators,
• Threaded flanges and caps,
• Sound-insulating unit casing (special accessories
on request).
7 Installation
7.1 Installation location
• The system is installed in the technical control
room or in a dry, well ventilated and frost-proof,
separate room that can be locked (requirement of
DIN 1988).
• Adequately dimensioned floor drainage (sewer
connection or similar) must be provided in the
installation room.
• No harmful gases must penetrate the room or be
present there.
• Adequate space must be provided for mainten-
ance work. The main dimensions are given on the
attached installation plan. The installation should
be freely accessible from at least two sides.
• The installation surface must be horizontal and
flat.
• The system is designed for a maximum ambient
temperature of +0 °C to 40 °C with a relative
atmospheric humidity of 50%.
• Installation and operation in the vicinity of living
rooms and bedrooms is not recommended.
• To avoid the transmission of structure-borne
noise and to ensure a stress-free connection to
upstream and downstream pipes, compensators
with extension limiters or flexible connecting
pipes should be used!
WILO SE 07/2010
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