Grundfos SCALA2 3-45 Pressure Booster Pump

SCALA2 3-45


SCALA2 is a fully integrated, self-priming, compact pump designed for pressure boosting in domestic applications. SCALA2 has integrated speed control which allows maintaining perfect pressure in the taps.

Suitable for.

  • Commercial water pressure boosting
  • Attic
  • Basement
  • Bathroom
  • Garden
  • Domestic groundwater intake
  • Kitchen
  • Living space
  • Domestic water pressure boosting
  • Domestic rainwater harvesting
  • Community water supply


Grundfos SCALA2 is a fully integrated, self-priming, compact waterworks for pressure boosting in domestic applications. SCALA2 incorporates integrated speed control enabling the keeping of the perfect pressure at the taps, meaning that the pump performance will increase with increasing demand.

SCALA2 can be installed in three easy steps:

1. Connect the pipes. 2. Prime the pump. 3. Plug the pump into the power outlet and the pump will start.

Grundfos SCALA2 has all the components necessary to ensure a comfortable pressure:

  • intelligent controller
  • integrated speed-controlled drive
  • integrated tank
  • integrated sensors
  • integrated non-return valves

As it is self-priming, the SCALA2 is able to pump water from a level below the pump. Provided it is filled with water, the pump is able to lift water from a depth of 8 m in less than 5 minutes. This facilitates easy installation and start-up of the pump and provides more reliable water supply in installations where there is a risk of dry running and leakages in suction hose or pipes.

If exposed to dry running, water shortage or excessive temperature, blocked pump, for example in case of seizure or overload, the pump will stop automatically, thus preventing a motor burnout.

The pump features an automatic reset function. In case of dry running or similar alarm, the pump will stop. Restarting will be attempted every 5 minutes 8 times, there after new restart attempt will occur every 24 hours. The automatic reset function can be deactivated.

Thanks to its hydraulic design, permanent magnet motor and water cooling, the pump is extremely low-noise, 47 dB(A) in typical use, which makes it suitable for indoor as well as outdoor use. Max noise level at full load are 53 dB(A)

The built-in pressure tank reduces the number of starts and stops in case of leakages in the pipe system, causing less wear on the pump.

SCALA2 require no maintenance, but it is recommended to keep the pump clean, check the non-return valves and keep the ventilation holes free of dust


Rated flow 3 m³/h
Rated head 27 m
Primary shaft seal: CARBON/CERAMIC
Approvals: CE,RCM
Approvals for drinking water: AS4020
Curve tolerance: ISO9906:2012 3B



Pump housing Composite
Impeller Composite, NORYL FE1630PW PPE+PS-GS30



Range of ambient temperature 0 .. 55 °C
Maximum operating pressure 10 bar
Maximum permissible inlet pressure
6 bar
Type of inlet connection
Type of outlet connection R
Size of inlet connection 1 inch
Size of outlet connection 1 inch
Pressure rating for connection PN 10



Pumped liquid Water
Liquid temperature range 0 .. 45 °C
Selected liquid temperature 20 °C
Density 998.2 kg/m³



P1 max. 550 W
Rated power - P2 0.45 kW
Mains frequency 50 /60 Hz
Rated voltage 1 x 200-240 V
Maximum current consumption 2.8 A
Enclosure class (IEC 34-5) IPX4D
Insulation class (IEC 85) F
Length of power cable 2m
Power plug Type I (AS/NZS 3112) Australian plug



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