DP Pumps Hydro-Unit Utility Line F, Installation & Operating Manual

Page: 24 / 96

24 / 96
4.7 Noise characteristics
The pressure booster system is available with different numbers and sizes of pumps. For the
noise characteristics refer to the operating manual of the pump set. To calculate the
expected total sound pressure level, add a defined value to the individual pump set’s
expected sound pressure level.
Table 9: Values for calculating the total expected sound pressure level
Number of pump sets Value
dB(A)
2 + 3
3 + 4,5
4 + 6
5 + 7
6 + 7,5
Example
Pressure booster system with 4 pump sets (value: + 6 dB(A))
Single pump = 48 dB(A)
48 dB(A) + 6 dB(A) = 54 dB(A)
The expected total sound pressure level of 54 dB(A) may develop when all 4 pump sets are
running under full-load conditions.
4.8 Scope of supply
Depending on the model, the following items are included in the scope of supply:
Pressure booster system
– Two to six vertical high-pressure centrifugal pumps
– Discharge-side, direct-flow membrane-type accumulator, approved for drinking water
– 1 check valve and 2 shut-off valves per pump set to DIN / DVGW
– Pressure transmitter on the suction side and discharge side
– Pressure gauge
– Powder-coated / epoxy resin-coated steel baseplate
For DPV 2, DPV 4, DPV 6, DPV 10 and DPV 15:
– With oval flange
– Pressure booster system with rubber feet
For DPV 25, DPV 40, DPV 60, DPV 85 and DPV 125:
– With round flange
– Pressure booster system with level-adjustable feet and rubber pads
Control unit
– IP54 enclosure
– Control panel (display, keys, LEDs, service interface)
– Transformer for control voltage
– Motor protection switch per pump
– Lockable master switch (repair switch)
– Terminal strip/terminals with identification for all connections
– Circuit diagram and list of electric components
– Connection for analog or digital dry running protection equipment
– Remote ON/OFF input